RuPAC2016 - List of Keywords (radiation)

Paper	Title	Other Keywords	Page
TUXMH02	Novosibirsk Free Electron Laser: Terahertz and Infrared Coherent Radiation Source	FEL, electron, undulator, laser	16
	N.A. Vinokurov, V.S. Arbuzov, K.N. Chernov, I.V. Davidyuk, O.I. Deichuli, E.N. Dementyev, B.A. Dovzhenko, Ya.V. Getmanov, Ya.I. Gorbachev, B.A. Knyazev, E.I. Kolobanov, A.A. Kondakov, V.R. Kozak, E.V. Kozyrev, S.A. Krutikhin, V.V. Kubarev, G.N. Kulipanov, E.A. Kuper, I.V. Kuptsov, G.Y. Kurkin, L.E. Medvedev, S.V. Motygin, V.N. Osipov, V.K. Ovchar, V.M. Petrov, A.M. Pilan, V.M. Popik, V.V. Repkov, T.V. Salikova, M.A. Scheglov, I.K. Sedlyarov, S.S. Serednyakov, O.A. Shevchenko, A.N. Skrinsky, S.V. Tararyshkin, V.G. Tcheskidov, A.G. Tribendis, P. Vobly, V. Volkov BINP SB RAS, Novosibirsk, Russia I.V. Davidyuk, Ya.V. Getmanov, B.A. Knyazev, E.V. Kozyrev, S.S. Serednyakov, N.A. Vinokurov NSU, Novosibirsk, Russia A.G. Tribendis NSTU, Novosibirsk, Russia
	Funding: This work was supported by Russian Science Foundation (project N 14-50-00080). High-power free electron laser (FEL) facility NovoFEL has been created at Budker INP. Its wavelength can be tuned over a wide range in terahertz and infrared spectrum regions. As a source of electron bunches this FEL uses multi-turn energy recovery linac which has five straight sections. Three sections are used for three FELs which operate in different wavelength ranges (the first one - 90-240 microns, the second - 37-80 microns and the third - 5-20 microns). The first and the second FELs were commissioned in 2003 and 2009 respectively. They operate for users now. The third FEL is installed on forth accelerator track which is the last one and electron energy is maximal here. It comprises three undulator sections and 40 m optical cavity. The first lasing of this FEL was obtained in summer, 2015. The radiation wavelength was 9 microns and average power was about 100 watts. The designed power is 1 kilowatt at repetition rate 3.75 MHz. Radiation of third FEL has been delivered to user stations recently. The third FEL commissioning results as well as current status of the first and second FELs and future development prospects are presented.
	Slides TUXMH02 [26.379 MB]
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TUCAMH01	Planar Superconducting Undulator With Neutral Poles	undulator, vacuum, quadrupole, wiggler	21
	N.A. Mezentsev, S.V. Khrushchev, V.A. Shkaruba, V.M. Syrovatin, V.M. Tsukanov BINP SB RAS, Novosibirsk, Russia
	Superconducting undulator with use of neutral poles was proposed in Budker INP. Period of the undulator is 15.6 mm. Pole gap and magnetic field are equal to 8 mm and 1.2 T correspondingly. A prototype of the undulator with 15 periods was fabricated and successfully tested. Calculations, design and test results of the prototype in the report are presented. The cryogenic and vacuum system of the undulator are discussed.
	Slides TUCAMH01 [7.848 MB]
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TUCAMH02	CW 100 mA Electron RF Gun for Novosibirsk ERL FEL	gun, cathode, cavity, electron	24
	V. Volkov, V.S. Arbuzov, E. Kenzhebulatov, E.I. Kolobanov, A.A. Kondakov, E.V. Kozyrev, S.A. Krutikhin, I.V. Kuptsov, G.Y. Kurkin, S.V. Motygin, A.A. Murasev, V.K. Ovchar, V.M. Petrov, A.M. Pilan, A.V. Repkov, M.A. Scheglov, I.K. Sedlyarov, S.S. Serednyakov, O.A. Shevchenko, S.V. Tararyshkin, A.G. Tribendis, N.A. Vinokurov BINP SB RAS, Novosibirsk, Russia N.A. Vinokurov NSU, Novosibirsk, Russia
	Funding: Grant 14-50-00080 of the Russian Science Foundation Continuous wave (CW) 100 mA electron RF gun for injecting the high-quality 300-400 keV electron beam in Novosibirsk microtron recuperator (ERL) and driving Free Electron Laser (FEL) was developed, built, and commissioned at BINP SB RAS. The RF gun consists of normal conducting 90 MHz RF cavity with a gridded thermionic cathode unit. Bench tests of rf gun is confirmed good results in strict accordance with the calculations. The gun was tested up to the design specifications at a test bench that includes a diagnostics beam line. The rf gun stand testing showed reliable work, unpretentious for vacuum conditions and stable in long-term operation. The design features of different components of the gun are presented. Preparation and commissioning experience is discussed. The beam test results are summarized.
	Slides TUCAMH02 [2.764 MB]
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TUCBMH02	Numerical Analysis of the Effective Width of the Spectrum of Synchrotron Radiation	polarization, synchrotron, synchrotron-radiation, electron	30
	V.G. Bagrov, A.S. Loginov, A.D. Saprykin Tomsk State University, Tomsk, Russia D.M. Gitman, A.D. Levin IFUSP, Sao Paulo, Brazil
	A notation of an effective spectral width is introduced in the theory of synchrotron radiation, as an exact quantitative characteristic of the spectral properties. Within a classical theory, numerical calculations of the effective spectral width for polarization components of the synchrotron radiation have been carried out (for an effective width exceeding 100 harmonics). It is found how the effective spectral width and the initial harmonic change depending on the energy of the radiating particle.
	Slides TUCBMH02 [0.265 MB]
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WEYMH02	A Radioactive Ion Beam and Isotope Production Facility for iThemba LABS	target, cyclotron, neutron, proton	78
	J.L. Conradie, L.S. Anthony, F. Azaiez, S. Baard, R.A. Bark, A.H. Barnard, J.I. Broodryk, J.C. Cornell, J.G. De Villiers, H. Du Plessis, W. Duckitt, D.T. Fourie, P.G. Gardiner, M.E. Hogan, I.H. Kohler, J. Lawrie, C. Lussi, N.R. Mantengu, R.H. McAlister, J. Mira, H.W. Mostert, C. Naidoo, F. Nemulodi, M. Sakildien, G.F. Steyn, N. Stodart, R.W. Thomae, M.J. Van Niekerk, P.A. van Schalkwyk iThemba LABS, Somerset West, South Africa A. Andrighetto, A. Monetti, G.P. Prete, M. Rossignoli INFN/LNL, Legnaro (PD), Italy
	iThemba LABS is a multidisciplinary research institute that provides accelerator-based facilities for physical, biomedical and material sciences, treatment of cancer patients with neutrons and protons and the production of radioisotopes and radiopharmaceuticals. The demand for beam time by the 3 main users namely, radioisotope production, nuclear physics research and medical applications, by far exceeds the available time. A feasibility study for a new radioactive ion beam and radioisotope production facility at iThemba LABS is in progress. A dedicated isotope production facility is proposed, which will free the existing K=200 separated sector cyclotron facility for nuclear physics research with stable beams. The K=200 cyclotron will be used as driver for the production of radioactive beams. An overview of the proposed facilities will be given.
	Slides WEYMH02 [28.899 MB]
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WECDMH03	A 5 to 20 MeV Electron Linear Accelerator for Metrology	electron, vacuum, shielding, target	102
	Yu. Zuev, Z. Andreeva, M.A. Kalinichenko, A.P. Klinov, A.S. Krestianinov, O.L. Maslennikov, A.V. Tanchuk, V.V. Terentyev NIIEFA, St. Petersburg, Russia S.G. Trofimchuk, I.I. Tsvetkov VNIIM, St.Petersburg, Russia
	The paper outlines design parameters and construction features of an electron linear accelerator to be operated in the D.I.Mendeleyev Institute for Metrology (VNIIM). The accelerator system is intended to form electron and bremsstrahlung radiation fields of variable intensity. This shall extend characteristics of the National measurement standard to be used for calibration of a space monitoring equipment, embedded measuring means for industrial accelerator facilities and others. The accelerator system consists of an electron source, resonance accelerating structure, beam-bending magnet'separator and radiation head with a block of bremsstrahlung targets, foils and collimators. An important feature of the system is spatial steadiness of radiation field at energies varied from 5 to 20 MeV and more than tenfold variation of the accelerated particle current. The status of the project will be presented as well.
	Slides WECDMH03 [9.654 MB]
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THCAMH01	Universal Proton and Neutron Centre for Radiation Resistance of Avionic, Space Electronics and Other Applications at 1 Gev Synchrocyclotron in PNPI	proton, neutron, target, electronics	105
	S.A. Artamonov, D.A. Amerkanov, E.M. Ivanov, J.S. Lebedeva, G.F. Mikheev, G.A. Riabov, O.A. Shcherbakov, A.S. Vorobyev PNPI, Gatchina, Leningrad District, Russia V.S. Anashin, L.R. Bakirov, A.E. Koziukov United Rocket and Space Corporation, Institute of Space Device Engineering, Moscow, Russia P.A. Chubunov ISDE, Moscow, Russia
	In PNPI RNC KI a universal center for testing electronic components for the needs of aviation and space and other applications is created on the synchrocyclotron SC-1000 with the proton energy of 1 GeV. The center consists of two protons and one neutron stands for test facilities developed at the PNPI in collaboration with the ROSCOSMOS Interagency Testing Center. The PNPI center is equipped with all necessary systems of diagnostics and monitoring of a beam, installation of targets on a beam. There is an opportunity to vary temperature of exemplars in the wide range. A unique conjunction of proton beams with variable energy 60-1000 MeV and atmospheric like neutron beam with broad energy range (1-1000 MeV) spectrum enable to perform complex testing of the semiconductor electronic devices at the SC-1000 within a single testing cycle.
	Slides THCAMH01 [11.652 MB]
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THCAMH02	Electron Accelerators Series ILU and Prospects of Their Application in the Food Industry	electron, acceleration, operation, high-voltage	108
	V.O. Tkachenko, V.V. Bezuglov, A.A. Bryazgin, B.L. Faktorovich, V.A. Gorbunov, M.V. Korobeynikov, V.E. Nekhaev, A.D. Panfilov, V.M. Radchenko, E.A. Shtarklev, A.V. Sidorov, A. YU. Vlasov, L.A. Voronin BINP SB RAS, Novosibirsk, Russia
	The report describes a series of industrial accelerators type ILU. Lists their basic parameters and characteristics. Presents data on their application in the cable industry, medicine and other fields. Reports on experiments with food products. Discusses the new features and technologes of the application of accelerators ILU in the food industry. Discusses problems in the Russian legislation related to the treatment of foodstuffs by ionizing radiation.
	Slides THCAMH02 [37.047 MB]
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THCAMH06	Gantry Free Transport Line for a Proton/Ion Therapy	proton, ion, target, controls	120
	M.M. Kats ITEP, Moscow, Russia
	For a long time a gantry was considered as a mandatory element for proton/ion therapy facility. However medics from MGH (Boston) suggested alternative concept which leads to decrease both cost and size of the facility. The concept is based on the following provisions: - immovable isocenter; - active scanning of a target volume; - different positions of patients at different fractions: - using CT on the place of irradiation after each change of positions of the patient for improvement plan; - using small change direction of the beam (like ±100). The "Planar isocentric system" developed by author can be used to enlarge the flexibility of the concept. It's relatively chip, small and can be realized for short time. It can be used for treatment for 90% of localizations. The system can replace gantry in centers of proton/ion therapy providing significant decreasing of treatment price. The details of the system are presented and discussed. Susu Yan et al, MGH Reassessment of the Necessity of the Proton Gantry: Analysis of Beam Orientations From 4332 Treatments.., Radiation Oncology, May 1, 2016 V. 95, Issue 1, P.224. ** M.M.Kats, Planar isocentric system instead of gantry, PTCOG55, 2016.
	Slides THCAMH06 [1.580 MB]
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TUPSA018	Experimental Facility for E-Beam Irradiation Test of Prototype IF Target in RISP	target, electron, controls, vacuum	253
	V. Gubin Institute of Laser Physics, SB RAS, Novosibirsk, Russia I. Chakin, S. Fadeev, M. Golkovsky, Yu. Maltseva, P.V. Martyshkin BINP SB RAS, Novosibirsk, Russia J.Y. Kim, J.-W. Kim, Y.H. Park IBS, Daejeon, Republic of Korea
	Nowadays project RISP is developed in IBS, Daejeon. One of the main project devices is graphite targets system meant for production of rare isotopes by means of the in-flight fragmentation (IF) technique. The power inside the target system deposited by the primary beam with energy of 200 MeV/u is estimated to be around 100 kW. The target represents rotating multi-slice graphite disc cooled by thermal radiation. Necessary step of the target development is integrated test of target prototype under high power electron beam modelling real energy deposit into target. This test is planned to be held in BINP, Novosibirsk, with the use of ELV-6 accelerator. This paper presents the design of experimental facility as well as experimental program of test. Specifications of electron beam (energy close to 800 keV, size ~ 1mm, total power 30-40 kW) are discussed. Parameters and design of basic devices and systems of facility are described.
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TUPSA043	Wake Field Components in a Rectangular Accelerating Structure With Dielectric Anisotropic Loading	wakefield, electron, acceleration, accelerating-gradient	310
	I.L. Sheinman, Yu.S. Sheinman LETI, Saint-Petersburg, Russia
	Dielectric lined waveguides are under extensive study as accelerating structures that can be excited by electron beams. Rectangular dielectric structures are used both in proof of principle experiments for new accelerating schemes and for studying the electronic properties of the structure loading material. Some of the materials used for the waveguide loading of accelerating structures possess significant anisotropic properties. General solutions for the fields generated by a relativistic electron beam propagating in a rectangular dielectric waveguide have been derived using the mode expansion method for the transverse operators of the Helmholtz equation. An expression for the combined Cherenkov and Coulomb fields obtained in terms of a superposition of LSM and LSE-modes of rectangular waveguide with anisotropic dielectric loading has been obtained. Numerical modeling of the longitudinal and transverse (deflecting) wakefields has been carried out. It is shown that the dielectric anisotropy influences to excitation parameters of the dielectric-lined waveguide with the anisotropic loading.
	Poster TUPSA043 [1.334 MB]
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TUPSA049	Electromagnetic Field in Dielectric Concentrator for Cherenkov Radiation	target, vacuum, optics, diagnostics	316
	S.N. Galyamin, A.A. Grigoreva, A.V. Tyukhtin, V.V. Vorobev Saint Petersburg State University, Saint Petersburg, Russia E.S. Belonogaya LETI, Saint-Petersburg, Russia
	Funding: Work was supported by the Grant of the President of Russian Federation (No. 6765.2015.2) and the Grant from Russian Foundation for Basic Research (No. 15-32-20985). Recently we have reported on axisymmetric dielectric concentrator for Cherenkov radiation that focuses almost the whole radiation in the vicinity of the given point (focus) located on the trajectory of the charge. Particularly, we have shown that this structure can increase the field up to two orders of magnitude. In this report we continue investigation of this concentrating target and analyse in more detail the field near the focal point depending on parameters of the target. S.N. Galyamin and A.V. Tyukhtin, Phys. Rev. Lett., 113, 064802 (2014).
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TUPSA050	Electron Beam Stability in the Energy Recovery Linac for the Lithographic Free Electron Laser	electron, linac, cavity, undulator	319
	Ya.V. Getmanov, O.A. Shevchenko, N.A. Vinokurov BINP SB RAS, Novosibirsk, Russia N.A. Vinokurov NSU, Novosibirsk, Russia
	According to microelectronic production leaders the lithography based on the free electron laser (FEL) could become the main technology for the elements mass production with scale to 5 nm in the nearest future. One of the main problem is the absence of the working FEL with required parameters. The feasibility study of those FEL based on superconducting energy-recovery linac (ERL) was made in Budker INP. The ERL average current is limited by longitudinal and transverse instabilities, caused by interaction between electron beam and its induced fields in the superconducting cavities. The estimations of the threshold currents and ERL parameters were made.
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TUPSA051	Form-factor Determination of an Arbitrary Bunch Sequence for the Coherent Radiation Calculation	factory, electron, target, diagnostics	322
	D.A. Shkitov, A.E. Harisova TPU, Tomsk, Russia
	It is well known that the coherent effect occur when charged particles in a bunch radiate in phase. This is accompanied by a quadratic increase in the radiation intensity and significantly influences the radiation spectrum. The coherent radiation is characterized by a form factor, which is the coefficient mainly depending on the ratio of bunch dimensions to the observed radiation wave length. The form factors will be different for the synchrotron and transition radiation because of their different nature of radiation. Now electron accelerators that produced beams with a sub-picosecond bunch length and a picosecond distance between them already exist. Through the appearance of interference between radiation from such a sequence of bunches, the total intensity is no longer equal to the sum of radiation from each bunches. For this reason, it is essential to determine the form factor of an arbitrary electron bunch sequence. Herein the uniform bunch distribution will be the special case. In this report we describe an approach to obtaining the form factor of the arbitrary bunch sequence.
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TUPSA052	First Order Perturbation Theory Evaluation of Initial Stage of Self Amplified Crystal-Based X-Ray Emission	electron, electromagnetic-fields, resonance, undulator	325
	A.I. Benediktovitch BSU, Minsk, Belarus, Belarus
	X-ray Free Electron Lasers open new revolutionary opportunities for investigations in materials science, chemistry, biology and other areas. However, due to high cost of construction and maintain, the access to these facilities for wide scientific community is quite limited. This motivates search for schemes of compact bright x-ray sources. The size of X-ray Free Electron Lasers is dictated by basic properties of undulator radiation: to produce x-rays with Angstrom wavelength from cm period undulator one needs electrons with energy in GeV range. If one considers the radiation mechanisms accompanying the propagation of electron beam through a crystal structure (channeling radiation, parametric x-ray radiation, Cherenkov radiation near K-edge), one can see that to get photons in x-ray range one needs electrons with energy of tens to hundreds MeV. One of the ways to get bright x-ray source based on crystal-assisted radiation mechanisms is to run the electrons in coherent radiation regime based on self amplified spontaneous emission (SASE). In the present contribution we will discuss under which conditions the SASE can start in the case of crystal-assisted radiation mechanisms. To investigate the initial stage of SASE process we use the first-order perturbation theory that enables to describe the collective beam response as effective susceptibility. Based on this approach we will analyze which experimental geometry would promising for the SASE process onset.
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WEPSB018	Beam Dynamics Calculation of Electron Bunch Sequence Passing Through Dielectric	focusing, electron, wakefield, quadrupole	401
	A. Altmark LETI, Saint-Petersburg, Russia A. Kanareykin Euclid TechLabs, LLC, Solon, Ohio, USA
	Funding: Grant 15-02-08745 from the Russian Foundation for Basic Research. The present work involves modeling the electron beams dynamics for development of new THz source based on cylindrical dielectric waveguide. The sequence of relativistic electron bunch generates Cherenkov radiation, which is a superposition of the TM and HEM-modes. The distances between bunches is selected for creating of monochromatic THz radiation. We made calculation of beam dynamics taking into account the Space Charge and focusing field with help of original BBU 3000 code. We present result for different parameters of waveguide and different offsets of bunches. The main parameter of radiation was investigated: length of wave pocket, monochromaticity and frequency. Altmark A, Kanareykin A. The source of THz radiation based on dielectric waveguide excited by sequence of electron bunches// 2016 J. Phys.: Conf. Ser. 732 012037
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WEPSB034	The Electromagnetic Field Structure in the Circular Waveguide with Transverse Boundary	vacuum, simulation, electromagnetic-fields, acceleration	434
	A.A. Grigoreva Saint-Petersburg State University, Saint-Petersburg, Russia S.N. Galyamin, A.V. Tyukhtin, V.V. Vorobev Saint Petersburg State University, Saint Petersburg, Russia
	Funding: This work was supported by Russian Foundation for Basic Research under Grant 15-02-03913. The study of the electromagnetic field in a circular waveguide having a partial dielectric filling is of interest for a series of applications including new methods of particle acceleration. We consider the structure of the electromagnetic field in the circular waveguide which consists of two semi-infinite parts. One of them is empty and the other one has a cylindrical dielectric layer and a coaxial vacuum channel. Incident electromagnetic field is a symmetrical TM mode launching either from the vacuum part or from the partially dielectric part. Such mode can be excited by a particle bunch moving along the waveguide axis. The analytical investigation of reflected and transmitted fields is performed. On the basis of this study, we develop an algorithm for numerical calculation and demonstrate properties of waveguide modes excited because of presence of transversal boundary. Moreover we perform direct numerical simulation using Comsol Multiphysics. The comparison of results of our algorithm with simulations is given, and the good agreement between both methods is demonstrated.
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WEPSB045	The Way To Improve Conformity Of Proton Therapy	proton, target, scattering, ion	464
	I.A. Yakovlev, S.V. Akulinichev, Y.K. Gavrilov RAS/INR, Moscow, Russia R.D. Ilich VINCA, Belgrade, Serbia
	Funding: Institute for nuclear research of RAS (INR), Moscow 117312, Russia In the case of small tumors the pencil beam width may be comparable with the target size. In these cases the application of classic method of passive beam scattering with a one-stage formation of dose distribution may be reasonable. However, the last method in its standard implementation fails to provide the dose conformity: either the maximal dose exceeds the tumor volume on its proximate site or the dose deviates too much within the tumor. In order to overcome this shortcoming of the passive scattering method, we suggest a new construction of a two-component ridge filter (the corresponding patent is pending). We have performed a series of calculations with the Monte-Carlo code SRNA in order to find the optimal construction from the point of view of dose delivery accuracy and of the device manufacturability. With that ridge filter the 95% isodose does not notably leave the tumor volume. The usual 'wings' of isodoses on proximate side are now absent and the volume of irradiated healthy tissue is significantly reduced. The experimental tests with proton beams are now in progress.
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WEPSB050	Laboratory Model of Thermoradiotherapy Facility: Experimental Results	dipole, experiment, controls, simulation	477
	S.M. Polozov, A.M. Fadeev, S.M. Ivanov MEPhI, Moscow, Russia E.A. Perelstein JINR, Dubna, Moscow Region, Russia
	Hyperthermia combined with radiotherapy (thermoradiotherapy) or with chemotherapy is one of promising approach to improve the cancer treatment efficiency. The treatment of deep-situated tumors is a problem which can not be solved by means of traditional facilities developed for whole-body or regional hyperthermia because of overheating of healthy tissues and blood. A cylindrical array of independently phased dipoles was proposed to focus electromagnetic energy in deep-situated tumors. It was early shown by simulations that array of eight independently phased dipoles operating on 100-150 MHz can be used to focus energy in an ellipsoid of 30-50 mm in size. Later the laboratory model of thermoradiotherapy facility was developed and constructed and series of experiments were carried out. Results of experiments and its comparison with simulations will discuss in report.
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WEPSB056	Study of Oil Wells With the Use of Accelerator Tubes, Time and Energy Spectrometers of Neutrons and Gamma Rays in a Single Geophysical Complex	neutron, plasma, vacuum, laser	490
	A.E. Shikanov, B.Y. Bogdanovich, A.V. Il'inskiy, A.A. Isaev, K.I. Kozlovskiy, A. Nesterovich, E.D. Vovchenko MEPhI, Moscow, Russia
	The report discusses the finding of the coefficient of oil saturation of the reservoir by of nuclear methods. For this purpose, the data about pulse and the activation neutron logging and spectral logging of natural gamma activity are used in a single geophysical complex. As sources of neutron radiation can been applied accelerating tube (AT) based on different ion sources, such as plasma discharge with oscillating electrons (gas AT), vacuum arc and laser-plasma (vacuum AT). For investigation of the oil reservoir, in particular with heavy oil, we discuss the prospects of using vacuum accelerating tube based on a laser-plasma source of deuterons with coaxial acceleration geometry and pulsed magnetic isolation of electrons.
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WEPSB059	Realization of Positron Annihilation Spectroscopy at LEPTA Facility	positron, electron, detector, ion	496
	K. Siemek, V.I. Hilinov, P. Horodek JINR/DLNP, Dubna, Moscow region, Russia E.V. Ahmanova, M.K. Eseev, A.G. Kobets, I.N. Meshkov, O. Orlov, A.A. Sidorin JINR, Dubna, Moscow Region, Russia M.K. Eseev NAFU, Arkhangelsk, Russia A.G. Kobets IERT, Kharkov, Ukraine
	Positrons are used in materials science to study open volume defects. Several positron annihilation spectroscopy (PAS) techniques exist. These methods are based on detection of the 511 keV gamma quantum. The first method is the analysis of the Doppler broadening of annihilation line and provide information about defect concentration. Both annihilation quanta can be observed. Coincidence observation of two quanta gives additional information about the environment around defect. The second method is based on lifetime concept, which allows to distinguish type of defects. Nowadays, positron beams are of great interest for materials science. Using a low energy, monoenergetic beam it is possible to control the positron penetration depth from the sample surface to a depth of several microns. Thus, the beam can be used to characterize thin films, analysis of surface modification, studying influence of ions on matter etc. This report aims to present a current status of realization and progress in PAS methods at LEPTA facility at JINR.
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WEPSB065	Development of the Beam Diagnostic System for the Radiobiological Research at the Proton Linear Accelerator I-2	proton, experiment, diagnostics, detector	508
	A.V. Bakhmutova, A. Golubev, A.V. Kantsyrev, N.V. Markov ITEP, Moscow, Russia
	Funding: RFBR 16-32-00393 At the present time at ITEP there is a possibility to investigate the biological mechanisms of the low energy protons on living systems on linear accelerator I-2. The unique high current linear accelerator allows to obtain 20 MeV intense proton beams. They could be used for the radiobiological research in a wide range of absorbed doses and for different cell types. Currently some preliminary experiments were made to specify diagnostic equipment required for further investigations. This work presents the main results on the proton beam parameters measurements such as beam current, beam cross section dimension as well as the measurements of the absorbed dose and depth dose distribution using different types of detectors.
	Poster WEPSB065 [9.739 MB]
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WEPSB068	Radiation From Open-Ended Flanged Waveguide With Dielectric Loading	simulation, vacuum, electron, extraction	515
	V.V. Vorobev, S.N. Galyamin, A.A. Grigoreva, A.V. Tyukhtin Saint Petersburg State University, Saint Petersburg, Russia
	Funding: The work is supported by the Grant of the President of Russian Federation (No. 6765.2015.2) and the Grants from Russian Foundation for Basic Research (No. 15-32-20985, 15-02-03913). Terahertz radiation is considered as a promising tool for a number of applications. One possible way to emit THz waves is to pass short electron bunch through a waveguide structure loaded with dielectric. Previously we considered the extraction of radiation from the open end of the waveguide with dielectric loading in both approximate and rigorous formulation. We also developed a rigorous approach based on mode-matching technique and modified residue-calculus technique for the case when the waveguide with dielectric is co-axial with infinite waveguide with greater radius. The study presented is devoted to the case when the dielectric loaded waveguide has a flange and enclosed into another waveguide with a greater radius. The case of the flanged waveguide in the unbounded vacuum space can be described as the limiting case of the problem under consideration. We perform analytical calculation (based on mode-matching technique and modified residue-calculus technique) and direct numerical simulation.
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WEPSB069	Radiation of a Bunch Flying from the Open End of a Waveguide with a Dielectric Loading	simulation, vacuum, electron, electromagnetic-fields	518
	S.N. Galyamin, A.V. Tyukhtin, V.V. Vorobev Saint Petersburg State University, Saint Petersburg, Russia A. Altmark, S. Baturin LETI, Saint-Petersburg, Russia
	Funding: Work is supported by the Grant of the President of Russian Federation (No. 6765.2015.2) and the Grant from Russian Foundation for Basic Research (No. 15-32-20985). In this paper we proceed with our investigation of Terahertz emission from beam moving in waveguide structures with dielectric layer. Recently we have considered an open-ended waveguide (with uniform dielectric filling) placed inside regular vacuum waveguide of a larger radius and excited by a single incident waveguide mode. Here we present analytical results for the case where the structure is excited by a moving charge. We also perform simulations using CST® PS code and compare results. S.N. Galyamin, A.V. Tyukhtin, S.S. Baturin, S. Antipov, Opt. Express 22(8) 8902 (2014). ** S.N. Galyamin, A.V. Tyukhtin, S.S. Baturin, V.V. Vorobev, A.A. Grigoreva, in Proc. IPAC'16, pp. 1617-1619.
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THPSC003	The Design of Permenant Magnet Spread System for 0.5 MeV Irradiation Accelerator	electron, permanent-magnet, high-voltage, dipole	541
	J. Huang, Q.S. Chen, K. Fan, M. Fan, W. Qi, Y.Q. Xiong, J. Yang, L.G. Zhang HUST, Wuhan, People's Republic of China T. Yu, C. Zuo Huazhong University of Science and Technology, State Key Laboratory of Advanced Electromagnetic Engineering and Technology,, Hubei, People's Republic of China
	Funding: Supported by Natural Science Foundation (11505068) The traditional electron beam scanning magnet has many disadvantages, for example, the regulatory of excitation current is very complex and the irradiation uniformity as well as the irradiation area is very difficult to improve and expand. Thus the author of the paper proposes an innovative technology of a permanent magnet spread system for 10 MeV irradiation accelerator which uses a special configuration of the magnetic field to spread electron beam bunch directly and would remarkably improve the spread uniformity, simplify the accelerator and would be helpful to protect the titanium window and expand the irradiation area. Also, the technology could as well be used on the electron beam irradiation of those irregular structured objects of large size.
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THPSC008	Magnetic Systems for Beam Transport at Extraction Channels of ILU Accelerators	electron, extraction, focusing, dipole	556
	V.V. Bezuglov, A.A. Bryazgin, B.L. Faktorovich, E.N. Kokin, V.E. Nekhaev, A.D. Panfilov, V.M. Radchenko, E.A. Shtarklev, V.O. Tkachenko, A. YU. Vlasov, L.A. Voronin BINP SB RAS, Novosibirsk, Russia
	This paper is devoted to magnetic systems for beam transport at extraction channels of electron industrial accelerators of the ILU type. The extraction systems meant for energy of the accelerated electrons up to 10 MeV and beam power up to 100 kW are described. The analysis of their work subject to the processes connected with the induced eddy currents in metal walls of beam scanning chambers is made; special attention is paid to forming of the dose field in a radiation zone. In paper the magnetic system for bending of the nonmonochromatic beams is offered to application. The essence of the described device consists in application of two identical magnetic mirrors in which distribution of magnetic field on depth is formed so that natural rise of magnetic field intensity on an entrance to a mirror is followed by decrease of this field under a certain law. In the issue of impact on charged particles of forces arising in cylindrical lenses of each mirror is possible to compensate angular divergence of strongly nonmonochromatic beams in gaps of magnetic mirrors and to receive after bending a beam with parameters close to phase characteristics of an input beam. The design procedure of such bending device and a general view of installation for experimental check of the offered bending system on electron beam are given in this paper.
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THPSC017	A Synchrotron Radiation Beamline Installed at BINP to Study the High Luminosity LHC Vacuum System	photon, electron, vacuum, synchrotron	572
	A.A. Krasnov, V.V. Anashin, A.M. Semenov, D.B. Shwartz BINP SB RAS, Novosibirsk, Russia V. Baglin, P. Chiggiato, B. Henrist CERN, Geneva, Switzerland D.B. Shwartz NSU, Novosibirsk, Russia
	In the framework of the HL-LHC project, the vacuum performance of new surface material needs to be studied. In particular, a-C coating is proposed as an anti-multipactor surface in the HL-LHC Inner Triplets. Since the protons in the HL-LHC Inner Triplets will generate synchrotron radiation (SR) with ~ 10 eV critical energy and ~ 10¹⁶ ph/m/s flux, it is therefore of great importance to study the impact of such photons on a-C coating held at room and cryogenic temperature and compare the results against present LHC material. This paper describes construction and parameters of experimental set-up based on new Synchrotron Radiation beamline from booster synchrotron BEP at BINP. The experimental program releasing in collaboration between CERN and BINP for performing measurements of photon stimulated gas desorption, photon distribution and photo-electron emission provoked by synchrotron radiation are presented
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THPSC026	The Automation of Energy Ramping for the Main Storage Ring of KSRS	controls, power-supply, synchrotron, synchrotron-radiation	597
	Y.V. Krylov RRC, Moscow, Russia E.V. Kaportsev, K. Moseev, N.I. Moseiko, A.G. Valentinov NRC, Moscow, Russia
	Kurchatov Synchrotron Radiation Source (KSRS) is the complex of electron synchrotrons specialized as a source of synchrotron radiation. The running cycle of KSRS main storage ring includes the energy ramping from 450 MeV up to 2.5 GeV. Fast and reliable energy ramping algorithm was developed and implemented at KSRS main storage ring. Using the hardware decisions on the basis of the NI units and CAN-bus interface, the control system is developed and launched for the power supplies of magnetic elements.
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THPSC037	Loss Analysis of Insulated Core Transformer High Voltage Power Supply	high-voltage, power-supply, electron, electronics	620
	Y.F. Zhang, J. Huang, M.K. Li, H. Liang, W. Qi, Y.Q. Xiong, J. Yang, L.G. Zhang, C. Zuo HUST, Wuhan, People's Republic of China T. Yu Huazhong University of Science and Technology, State Key Laboratory of Advanced Electromagnetic Engineering and Technology,, Hubei, People's Republic of China
	Insulated core transformer (ICT) electron accelerator is an ideal prototype in low energy radiation processing industry, and ICT high voltage power supply is the essential apparatus. Conventional ICT high voltage power supply uses laminated silicon steel sheets as magnetic cores and works at 50 Hz. In a novel design of the ICT high voltage power supply, the magnetic cores made of ferrite material are adopted to increase the frequency and improve the performance. Focusing on the new scheme, the loss calculation of the high voltage power supply was carried out. The loss of ferrite magnetic cores and the windings was analysed and simulated.
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THPSC048	Measurement of Gamma Beams Profile by Cherenkov Radiation in Fibers	photon, experiment, betatron, electron	638
	A.V. Vukolov, A.I. Novokshonov, A. Potylitsyn, E. Shuvalov, S.R. Uglov TPU, Tomsk, Russia
	Funding: This work was partially supported by the Russian Ministry of Education and Science within the program 'Nauka' Grant 3.709.2014/K and by RFBR Grant 15-52-50028-YaF_a. Results of gamma beam profile experimental investigations by measuring of Cherenkov radiation* generated in a fiber with 0.6 mm thickness and in a glass rod with 5 mm diameter are presented. These experiments were carried out on bremsstrahlung beam of the linear accelerator 'Philips SL-75' with 6 MeV energy and 4 Gr/min dose rate at 1 m distance. In works and * authors have showed feasibility of Cherenkov radiation applying for high energy beam diagnostics. In our work the Cherenkov radiation yield dependence on the fiber orientation relative to the beam axis was investigated and showed that the maximal light yield corresponds to the angle between fiber and beam axes closed to the Cherenkov angle. When dose rate is higher than 1 Gr/min at 1 m distance one can register a light yield for the fiber orientation even less than Cherenkov angle. We suppose that the observed effect is connected with generating of electromagnetic shower by initial photons. Proposed technique of bremsstrahlung and electron **** beams profile measurements differs from well-known techniques based on ionization chambers due to its insensitive to low energy part of the bremsstrahlung spectrum and to undesirable background. Using this technique for beam profile scanning it is possible to construct compact and noise insensitive device relative to the well-known systems. It is also possible to reach submillimeter resolution with this device. * Jelley J V, Cherenkov Radiation and its Application, 1958, Pergamon Press. Wulf F, Korfer M, Proc. of DIPAC 2009, p. 411. * A. Murokh, R. Agustsson etc., Proc of IPAC2012, p.996. **** A V Vukolov, A I Novokshonov, A P Potylitsyn, S R Uglov, Proc of RREPS-15, 2015, Sain-Petersburg
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THPSC050	Possibilities of Diffraction Radiation Non-Destructive Diagnostics for Non- and Moderately Relativistic Beams	proton, target, diagnostics, simulation	644
	D.A. Shkitov, A. Potylitsyn TPU, Tomsk, Russia
	Funding: The work was partially supported by the RFBR grant No 15-52-50028. In order to design and construct new modern accelerators with high brightness beams, the development new non-destructive diagnostic tools for accelerated beams is required. Diffraction radiation (DR) is generated by charged particles moving in the vicinity of the conductive target. The DR technique is used successfully for non-destructive diagnostics for ultrarelativistic beams,. For non-relativistic and moderately relativistic charged particles beams (g ~ a few tens or less, g is the Lorentz factor) non-destructive DR diagnostics can be applied also if a beam intensity is high enough due to coherent effect. Intensity of coherent radiation is proportional to the squared bunch population. In this report estimations of non-destructive bunch diagnostics possibility based on DR for the beam parameters of a few machines are presented. Those estimations were performed for electron machine: PITZ project and laser wakefield accelerator, and moreover for ESS proton linear accelerator**. First evaluation of whole wavelength range DR from 4-mm-slit target gave about 56 mJ from one macro-pulse of ESS accelerator. Amplification of DR spectral-angular intensity due to coherent effect will be in N = 10⁸ times than incoherent radiation from the same beam, where N is the bunch population. P. Karataev et al., PRL 93 (2004) 244802 A. Cianchi et al., PRST-AB 14 (2011) 102803 * http://pitz.desy.de ** B.S. Rao et al., PRST-AB 17 (2014) 011301 *** https://europeanspallationsource.se
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THPSC054	Modernization of the Electron Beam Stabilization System in the KSRS	database, controls, synchrotron, synchrotron-radiation	656
	K. Moseev, E.V. Kaportsev, Y.V. Krylov, A.G. Valentinov NRC, Moscow, Russia
	The stabilization system is designed to prevent drift of the spot SR at the experimental stations by local changes of the orbit. This system was developed and implemented about twelve years ago as an element of the ACS and worked well. Produced by modernization has led to the need of adaptation of the system of stabilization not only in hardware but also in software. Work on updating of the stabilization system and will be shown next.
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THPSC063	System of Thermomonitoring and Thermostabilizing of Kurchatov Synchrotron Radiation Source	controls, synchrotron, synchrotron-radiation, electron	680
	N.I. Moseiko, E.V. Kaportsev, K. Moseev, A.G. Valentinov NRC, Moscow, Russia Y.V. Krylov RRC, Moscow, Russia
	The modern system of thermomonitoring and thermostabilizing (TERMOCS) of KSRS - Kurchatov synchrotron radiation source is described. The TERMOCS system provides: a monitoring of temperatures of the magnets and RF-resonators of KSRS; informing operator on violations of the course of technological process; data protection from illegal access; an archiving and displaying of archive data in a trend type. The system includes 480 temperature sensors of the AD592 type, providing the accuracy of measurements 0,2 C. System of thermo stabilizing of the linear accelerator - the proportional integral differentiating regulator for support of stability of temperatures at the level of 0,05 C. During creation of the system the modern decisions on the basis of the modular complexes of NI, the modern servers and the Citect SCADA software system were used.
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THPSC064	Monitoring of Low Intensity Ion Beams at FLNR Accelerator Complex	detector, ion, cyclotron, diagnostics	683
	S. Mitrofanov, Yu.G. Teterev JINR, Dubna, Moscow Region, Russia A.I. Krylov JINR/FLNR, Moscow region, Russia
	FLNR JINR host experimental researches in wide area of applied science, including medical, biological and radiation hardness investigations, where the beam diagnostics plays the key role. We provide beam monitoring at all stages of the experiment: inside the cyclotron, beam transport and ion beam profile visualization close to the physical target. The detailed overview of beam control and diagnostic solutions used in FLNR JINR for the low intensity and highly charged ion beams parameters evaluation will be presented.
	Poster THPSC064 [4.715 MB]
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THPSC065	Diagnostics of Accelerator Beams by the Dependence of the Vavilov-Cherenkov Radiation Intensity on the Refractive Index of the Radiator "n"	electron, photon, detector, microtron	686
	K.A. Trukhanov SSC RF- IBMP RAS, Moscow, Russia A.I. Larkin NRNU, Moscow, Russia V.I. Shvedunov MSU, Moscow, Russia
	The report presents the results of development the method TLSH* for finding of the particle speed distribution (PSD) in beams of accelerators. PSD is deduced from the Volterra integral equation of the first kind with the right part, which is by the dependence of Cherenkov radiation intensity (ChRI) from n, experimentally obtained for the given beam. PSD is the second derivative of ChRI. The problem of stability of the second derivative is solved by attracting the priori information (for example, nonnegative of the solution). Using optical dispersion of radiator is discussed. It enables to find PSD even in the single cluster of particles. The possibility of determining the PSD in the cross section beam is discussed too. The method also enables to find PSD upon a noticeable transverse speed of the particles in the beam. The method is virtually non-destructive in many cases. *Measurement of the distributions of particle velocity in the accelerator beam on the basis of the Vavilov-Cherenkov radiation at optical and microwave ranges. Trukhanov K. A., Larkin A. I., Shvedunov V. I. Izv. RAS. Ser. Phys. 2010. V. 74, No. 11, Pp. 1665-1668.
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THPSC068	Integrated Inspection Method of Motor Transports Based on Acceleration Technology	neutron, controls, electron, detector	692
	A.M. Fialkovsky, P.O. Klinovsky, K.V. Kotenko, V.P. Malyshev, T.R. Virkunen NIIEFA, St. Petersburg, Russia
	Integrated inspection method of motor transports was suggested based on linear electron accelerator and neutron generator, which helps to detect substances forbidden for carrying, including explosives, narcotic drugs and fissionable materials. The linear high-frequency electron accelerator is a source of X-ray bremsstrahlung. The result of scanning is an introscopical image of a motor transport with color-selected suspicious substances. The neutron activation analysis of these substances with neutron generator as a neutron source lets detect elemental substance composition as well as identify explosives or narcotic drugs. This article contains accelerator specifications, which lets implement suggested method.
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THPSC084	The New Control for Magnet System of KSRS	controls, electron, software, synchrotron	727
	E.V. Kaportsev, Y.V. Krylov RRC, Moscow, Russia K. Moseev, N.I. Moseiko, A.G. Valentinov NRC, Moscow, Russia
	The running cycle of Kurchatov Synchrotron Radiation Source (KSRS) includes the injection of electrons with energy 80 MeV from the linear accelerator in the booster storage ring Siberia-1, the accumulation of a electron current up to 400 mA and, then, electron energy ramping up to 450 MeV with the subsequent extraction of electrons in the main ring, storage ring Siberia-2, and accumulation there up to 300 mA, and at last the energy ramping up to 2.5 GeV. Several years ago, a modernization of the current system of automated control systems (ACS) has started. This article presents one of the most important parts - the new control subsystem of the magnet system
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TUXMH02

Novosibirsk Free Electron Laser: Terahertz and Infrared Coherent Radiation Source

FEL, electron, undulator, laser

16

N.A. Vinokurov, V.S. Arbuzov, K.N. Chernov, I.V. Davidyuk, O.I. Deichuli, E.N. Dementyev, B.A. Dovzhenko, Ya.V. Getmanov, Ya.I. Gorbachev, B.A. Knyazev, E.I. Kolobanov, A.A. Kondakov, V.R. Kozak, E.V. Kozyrev, S.A. Krutikhin, V.V. Kubarev, G.N. Kulipanov, E.A. Kuper, I.V. Kuptsov, G.Y. Kurkin, L.E. Medvedev, S.V. Motygin, V.N. Osipov, V.K. Ovchar, V.M. Petrov, A.M. Pilan, V.M. Popik, V.V. Repkov, T.V. Salikova, M.A. Scheglov, I.K. Sedlyarov, S.S. Serednyakov, O.A. Shevchenko, A.N. Skrinsky, S.V. Tararyshkin, V.G. Tcheskidov, A.G. Tribendis, P. Vobly, V. Volkov
BINP SB RAS, Novosibirsk, Russia
I.V. Davidyuk, Ya.V. Getmanov, B.A. Knyazev, E.V. Kozyrev, S.S. Serednyakov, N.A. Vinokurov
NSU, Novosibirsk, Russia
A.G. Tribendis
NSTU, Novosibirsk, Russia

Funding: This work was supported by Russian Science Foundation (project N 14-50-00080).
High-power free electron laser (FEL) facility NovoFEL has been created at Budker INP. Its wavelength can be tuned over a wide range in terahertz and infrared spectrum regions. As a source of electron bunches this FEL uses multi-turn energy recovery linac which has five straight sections. Three sections are used for three FELs which operate in different wavelength ranges (the first one - 90-240 microns, the second - 37-80 microns and the third - 5-20 microns). The first and the second FELs were commissioned in 2003 and 2009 respectively. They operate for users now. The third FEL is installed on forth accelerator track which is the last one and electron energy is maximal here. It comprises three undulator sections and 40 m optical cavity. The first lasing of this FEL was obtained in summer, 2015. The radiation wavelength was 9 microns and average power was about 100 watts. The designed power is 1 kilowatt at repetition rate 3.75 MHz. Radiation of third FEL has been delivered to user stations recently. The third FEL commissioning results as well as current status of the first and second FELs and future development prospects are presented.

Slides TUXMH02 [26.379 MB]

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TUCAMH01

Planar Superconducting Undulator With Neutral Poles

undulator, vacuum, quadrupole, wiggler

21

N.A. Mezentsev, S.V. Khrushchev, V.A. Shkaruba, V.M. Syrovatin, V.M. Tsukanov
BINP SB RAS, Novosibirsk, Russia

Superconducting undulator with use of neutral poles was proposed in Budker INP. Period of the undulator is 15.6 mm. Pole gap and magnetic field are equal to 8 mm and 1.2 T correspondingly. A prototype of the undulator with 15 periods was fabricated and successfully tested. Calculations, design and test results of the prototype in the report are presented. The cryogenic and vacuum system of the undulator are discussed.

Slides TUCAMH01 [7.848 MB]

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TUCAMH02

CW 100 mA Electron RF Gun for Novosibirsk ERL FEL

gun, cathode, cavity, electron

24

V. Volkov, V.S. Arbuzov, E. Kenzhebulatov, E.I. Kolobanov, A.A. Kondakov, E.V. Kozyrev, S.A. Krutikhin, I.V. Kuptsov, G.Y. Kurkin, S.V. Motygin, A.A. Murasev, V.K. Ovchar, V.M. Petrov, A.M. Pilan, A.V. Repkov, M.A. Scheglov, I.K. Sedlyarov, S.S. Serednyakov, O.A. Shevchenko, S.V. Tararyshkin, A.G. Tribendis, N.A. Vinokurov
BINP SB RAS, Novosibirsk, Russia
N.A. Vinokurov
NSU, Novosibirsk, Russia

Funding: Grant 14-50-00080 of the Russian Science Foundation
Continuous wave (CW) 100 mA electron RF gun for injecting the high-quality 300-400 keV electron beam in Novosibirsk microtron recuperator (ERL) and driving Free Electron Laser (FEL) was developed, built, and commissioned at BINP SB RAS. The RF gun consists of normal conducting 90 MHz RF cavity with a gridded thermionic cathode unit. Bench tests of rf gun is confirmed good results in strict accordance with the calculations. The gun was tested up to the design specifications at a test bench that includes a diagnostics beam line. The rf gun stand testing showed reliable work, unpretentious for vacuum conditions and stable in long-term operation. The design features of different components of the gun are presented. Preparation and commissioning experience is discussed. The beam test results are summarized.

Slides TUCAMH02 [2.764 MB]

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TUCBMH02

Numerical Analysis of the Effective Width of the Spectrum of Synchrotron Radiation

polarization, synchrotron, synchrotron-radiation, electron

30

V.G. Bagrov, A.S. Loginov, A.D. Saprykin
Tomsk State University, Tomsk, Russia
D.M. Gitman, A.D. Levin
IFUSP, Sao Paulo, Brazil

A notation of an effective spectral width is introduced in the theory of synchrotron radiation, as an exact quantitative characteristic of the spectral properties. Within a classical theory, numerical calculations of the effective spectral width for polarization components of the synchrotron radiation have been carried out (for an effective width exceeding 100 harmonics). It is found how the effective spectral width and the initial harmonic change depending on the energy of the radiating particle.

Slides TUCBMH02 [0.265 MB]

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WEYMH02

A Radioactive Ion Beam and Isotope Production Facility for iThemba LABS

target, cyclotron, neutron, proton

78

J.L. Conradie, L.S. Anthony, F. Azaiez, S. Baard, R.A. Bark, A.H. Barnard, J.I. Broodryk, J.C. Cornell, J.G. De Villiers, H. Du Plessis, W. Duckitt, D.T. Fourie, P.G. Gardiner, M.E. Hogan, I.H. Kohler, J. Lawrie, C. Lussi, N.R. Mantengu, R.H. McAlister, J. Mira, H.W. Mostert, C. Naidoo, F. Nemulodi, M. Sakildien, G.F. Steyn, N. Stodart, R.W. Thomae, M.J. Van Niekerk, P.A. van Schalkwyk
iThemba LABS, Somerset West, South Africa
A. Andrighetto, A. Monetti, G.P. Prete, M. Rossignoli
INFN/LNL, Legnaro (PD), Italy

iThemba LABS is a multidisciplinary research institute that provides accelerator-based facilities for physical, biomedical and material sciences, treatment of cancer patients with neutrons and protons and the production of radioisotopes and radiopharmaceuticals. The demand for beam time by the 3 main users namely, radioisotope production, nuclear physics research and medical applications, by far exceeds the available time. A feasibility study for a new radioactive ion beam and radioisotope production facility at iThemba LABS is in progress. A dedicated isotope production facility is proposed, which will free the existing K=200 separated sector cyclotron facility for nuclear physics research with stable beams. The K=200 cyclotron will be used as driver for the production of radioactive beams. An overview of the proposed facilities will be given.

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WECDMH03

A 5 to 20 MeV Electron Linear Accelerator for Metrology

electron, vacuum, shielding, target

102

Yu. Zuev, Z. Andreeva, M.A. Kalinichenko, A.P. Klinov, A.S. Krestianinov, O.L. Maslennikov, A.V. Tanchuk, V.V. Terentyev
NIIEFA, St. Petersburg, Russia
S.G. Trofimchuk, I.I. Tsvetkov
VNIIM, St.Petersburg, Russia

The paper outlines design parameters and construction features of an electron linear accelerator to be operated in the D.I.Mendeleyev Institute for Metrology (VNIIM). The accelerator system is intended to form electron and bremsstrahlung radiation fields of variable intensity. This shall extend characteristics of the National measurement standard to be used for calibration of a space monitoring equipment, embedded measuring means for industrial accelerator facilities and others. The accelerator system consists of an electron source, resonance accelerating structure, beam-bending magnet'separator and radiation head with a block of bremsstrahlung targets, foils and collimators. An important feature of the system is spatial steadiness of radiation field at energies varied from 5 to 20 MeV and more than tenfold variation of the accelerated particle current. The status of the project will be presented as well.

Slides WECDMH03 [9.654 MB]

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THCAMH01

Universal Proton and Neutron Centre for Radiation Resistance of Avionic, Space Electronics and Other Applications at 1 Gev Synchrocyclotron in PNPI

proton, neutron, target, electronics

105

S.A. Artamonov, D.A. Amerkanov, E.M. Ivanov, J.S. Lebedeva, G.F. Mikheev, G.A. Riabov, O.A. Shcherbakov, A.S. Vorobyev
PNPI, Gatchina, Leningrad District, Russia
V.S. Anashin, L.R. Bakirov, A.E. Koziukov
United Rocket and Space Corporation, Institute of Space Device Engineering, Moscow, Russia
P.A. Chubunov
ISDE, Moscow, Russia

In PNPI RNC KI a universal center for testing electronic components for the needs of aviation and space and other applications is created on the synchrocyclotron SC-1000 with the proton energy of 1 GeV. The center consists of two protons and one neutron stands for test facilities developed at the PNPI in collaboration with the ROSCOSMOS Interagency Testing Center. The PNPI center is equipped with all necessary systems of diagnostics and monitoring of a beam, installation of targets on a beam. There is an opportunity to vary temperature of exemplars in the wide range. A unique conjunction of proton beams with variable energy 60-1000 MeV and atmospheric like neutron beam with broad energy range (1-1000 MeV) spectrum enable to perform complex testing of the semiconductor electronic devices at the SC-1000 within a single testing cycle.

Slides THCAMH01 [11.652 MB]

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THCAMH02

Electron Accelerators Series ILU and Prospects of Their Application in the Food Industry

electron, acceleration, operation, high-voltage

108

V.O. Tkachenko, V.V. Bezuglov, A.A. Bryazgin, B.L. Faktorovich, V.A. Gorbunov, M.V. Korobeynikov, V.E. Nekhaev, A.D. Panfilov, V.M. Radchenko, E.A. Shtarklev, A.V. Sidorov, A. YU. Vlasov, L.A. Voronin
BINP SB RAS, Novosibirsk, Russia

The report describes a series of industrial accelerators type ILU. Lists their basic parameters and characteristics. Presents data on their application in the cable industry, medicine and other fields. Reports on experiments with food products. Discusses the new features and technologes of the application of accelerators ILU in the food industry. Discusses problems in the Russian legislation related to the treatment of foodstuffs by ionizing radiation.

Slides THCAMH02 [37.047 MB]

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THCAMH06

Gantry Free Transport Line for a Proton/Ion Therapy

proton, ion, target, controls

120

M.M. Kats
ITEP, Moscow, Russia

For a long time a gantry was considered as a mandatory element for proton/ion therapy facility. However medics from MGH (Boston) suggested alternative concept which leads to decrease both cost and size of the facility*. The concept is based on the following provisions: - immovable isocenter; - active scanning of a target volume; - different positions of patients at different fractions: - using CT on the place of irradiation after each change of positions of the patient for improvement plan; - using small change direction of the beam (like ±100). The "Planar isocentric system" developed by author can be used to enlarge the flexibility of the concept**. It's relatively chip, small and can be realized for short time. It can be used for treatment for 90% of localizations. The system can replace gantry in centers of proton/ion therapy providing significant decreasing of treatment price. The details of the system are presented and discussed.
* Susu Yan et al, MGH Reassessment of the Necessity of the Proton Gantry: Analysis of Beam Orientations From 4332 Treatments.., Radiation Oncology, May 1, 2016 V. 95, Issue 1, P.224.
** M.M.Kats, Planar isocentric system instead of gantry, PTCOG55, 2016.

Slides THCAMH06 [1.580 MB]

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TUPSA018

Experimental Facility for E-Beam Irradiation Test of Prototype IF Target in RISP

target, electron, controls, vacuum

253

V. Gubin
Institute of Laser Physics, SB RAS, Novosibirsk, Russia
I. Chakin, S. Fadeev, M. Golkovsky, Yu. Maltseva, P.V. Martyshkin
BINP SB RAS, Novosibirsk, Russia
J.Y. Kim, J.-W. Kim, Y.H. Park
IBS, Daejeon, Republic of Korea

Nowadays project RISP is developed in IBS, Daejeon. One of the main project devices is graphite targets system meant for production of rare isotopes by means of the in-flight fragmentation (IF) technique. The power inside the target system deposited by the primary beam with energy of 200 MeV/u is estimated to be around 100 kW. The target represents rotating multi-slice graphite disc cooled by thermal radiation. Necessary step of the target development is integrated test of target prototype under high power electron beam modelling real energy deposit into target. This test is planned to be held in BINP, Novosibirsk, with the use of ELV-6 accelerator. This paper presents the design of experimental facility as well as experimental program of test. Specifications of electron beam (energy close to 800 keV, size ~ 1mm, total power 30-40 kW) are discussed. Parameters and design of basic devices and systems of facility are described.

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TUPSA043

Wake Field Components in a Rectangular Accelerating Structure With Dielectric Anisotropic Loading

wakefield, electron, acceleration, accelerating-gradient

310

I.L. Sheinman, Yu.S. Sheinman
LETI, Saint-Petersburg, Russia

Dielectric lined waveguides are under extensive study as accelerating structures that can be excited by electron beams. Rectangular dielectric structures are used both in proof of principle experiments for new accelerating schemes and for studying the electronic properties of the structure loading material. Some of the materials used for the waveguide loading of accelerating structures possess significant anisotropic properties. General solutions for the fields generated by a relativistic electron beam propagating in a rectangular dielectric waveguide have been derived using the mode expansion method for the transverse operators of the Helmholtz equation. An expression for the combined Cherenkov and Coulomb fields obtained in terms of a superposition of LSM and LSE-modes of rectangular waveguide with anisotropic dielectric loading has been obtained. Numerical modeling of the longitudinal and transverse (deflecting) wakefields has been carried out. It is shown that the dielectric anisotropy influences to excitation parameters of the dielectric-lined waveguide with the anisotropic loading.

Poster TUPSA043 [1.334 MB]

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TUPSA049

Electromagnetic Field in Dielectric Concentrator for Cherenkov Radiation

target, vacuum, optics, diagnostics

316

S.N. Galyamin, A.A. Grigoreva, A.V. Tyukhtin, V.V. Vorobev
Saint Petersburg State University, Saint Petersburg, Russia
E.S. Belonogaya
LETI, Saint-Petersburg, Russia

Funding: Work was supported by the Grant of the President of Russian Federation (No. 6765.2015.2) and the Grant from Russian Foundation for Basic Research (No. 15-32-20985).
Recently we have reported on axisymmetric dielectric concentrator for Cherenkov radiation that focuses almost the whole radiation in the vicinity of the given point (focus) located on the trajectory of the charge*. Particularly, we have shown that this structure can increase the field up to two orders of magnitude. In this report we continue investigation of this concentrating target and analyse in more detail the field near the focal point depending on parameters of the target.
* S.N. Galyamin and A.V. Tyukhtin, Phys. Rev. Lett., 113, 064802 (2014).

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TUPSA050

Electron Beam Stability in the Energy Recovery Linac for the Lithographic Free Electron Laser

electron, linac, cavity, undulator

319

Ya.V. Getmanov, O.A. Shevchenko, N.A. Vinokurov
BINP SB RAS, Novosibirsk, Russia
N.A. Vinokurov
NSU, Novosibirsk, Russia

According to microelectronic production leaders the lithography based on the free electron laser (FEL) could become the main technology for the elements mass production with scale to 5 nm in the nearest future. One of the main problem is the absence of the working FEL with required parameters. The feasibility study of those FEL based on superconducting energy-recovery linac (ERL) was made in Budker INP. The ERL average current is limited by longitudinal and transverse instabilities, caused by interaction between electron beam and its induced fields in the superconducting cavities. The estimations of the threshold currents and ERL parameters were made.

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TUPSA051

Form-factor Determination of an Arbitrary Bunch Sequence for the Coherent Radiation Calculation

factory, electron, target, diagnostics

322

D.A. Shkitov, A.E. Harisova
TPU, Tomsk, Russia

It is well known that the coherent effect occur when charged particles in a bunch radiate in phase. This is accompanied by a quadratic increase in the radiation intensity and significantly influences the radiation spectrum. The coherent radiation is characterized by a form factor, which is the coefficient mainly depending on the ratio of bunch dimensions to the observed radiation wave length. The form factors will be different for the synchrotron and transition radiation because of their different nature of radiation. Now electron accelerators that produced beams with a sub-picosecond bunch length and a picosecond distance between them already exist. Through the appearance of interference between radiation from such a sequence of bunches, the total intensity is no longer equal to the sum of radiation from each bunches. For this reason, it is essential to determine the form factor of an arbitrary electron bunch sequence. Herein the uniform bunch distribution will be the special case. In this report we describe an approach to obtaining the form factor of the arbitrary bunch sequence.

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TUPSA052

First Order Perturbation Theory Evaluation of Initial Stage of Self Amplified Crystal-Based X-Ray Emission

electron, electromagnetic-fields, resonance, undulator

325

A.I. Benediktovitch
BSU, Minsk, Belarus, Belarus

X-ray Free Electron Lasers open new revolutionary opportunities for investigations in materials science, chemistry, biology and other areas. However, due to high cost of construction and maintain, the access to these facilities for wide scientific community is quite limited. This motivates search for schemes of compact bright x-ray sources. The size of X-ray Free Electron Lasers is dictated by basic properties of undulator radiation: to produce x-rays with Angstrom wavelength from cm period undulator one needs electrons with energy in GeV range. If one considers the radiation mechanisms accompanying the propagation of electron beam through a crystal structure (channeling radiation, parametric x-ray radiation, Cherenkov radiation near K-edge), one can see that to get photons in x-ray range one needs electrons with energy of tens to hundreds MeV. One of the ways to get bright x-ray source based on crystal-assisted radiation mechanisms is to run the electrons in coherent radiation regime based on self amplified spontaneous emission (SASE). In the present contribution we will discuss under which conditions the SASE can start in the case of crystal-assisted radiation mechanisms. To investigate the initial stage of SASE process we use the first-order perturbation theory that enables to describe the collective beam response as effective susceptibility. Based on this approach we will analyze which experimental geometry would promising for the SASE process onset.

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WEPSB018

Beam Dynamics Calculation of Electron Bunch Sequence Passing Through Dielectric

focusing, electron, wakefield, quadrupole

401

A. Altmark
LETI, Saint-Petersburg, Russia
A. Kanareykin
Euclid TechLabs, LLC, Solon, Ohio, USA

Funding: Grant 15-02-08745 from the Russian Foundation for Basic Research.
The present work involves modeling the electron beams dynamics for development of new THz source based on cylindrical dielectric waveguide. The sequence of relativistic electron bunch generates Cherenkov radiation, which is a superposition of the TM and HEM-modes. The distances between bunches is selected for creating of monochromatic THz radiation*. We made calculation of beam dynamics taking into account the Space Charge and focusing field with help of original BBU 3000 code. We present result for different parameters of waveguide and different offsets of bunches. The main parameter of radiation was investigated: length of wave pocket, monochromaticity and frequency.
* Altmark A, Kanareykin A. The source of THz radiation based on dielectric waveguide excited by sequence of electron bunches// 2016 J. Phys.: Conf. Ser. 732 012037

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WEPSB034

The Electromagnetic Field Structure in the Circular Waveguide with Transverse Boundary

vacuum, simulation, electromagnetic-fields, acceleration

434

A.A. Grigoreva
Saint-Petersburg State University, Saint-Petersburg, Russia
S.N. Galyamin, A.V. Tyukhtin, V.V. Vorobev
Saint Petersburg State University, Saint Petersburg, Russia

Funding: This work was supported by Russian Foundation for Basic Research under Grant 15-02-03913.
The study of the electromagnetic field in a circular waveguide having a partial dielectric filling is of interest for a series of applications including new methods of particle acceleration. We consider the structure of the electromagnetic field in the circular waveguide which consists of two semi-infinite parts. One of them is empty and the other one has a cylindrical dielectric layer and a coaxial vacuum channel. Incident electromagnetic field is a symmetrical TM mode launching either from the vacuum part or from the partially dielectric part. Such mode can be excited by a particle bunch moving along the waveguide axis. The analytical investigation of reflected and transmitted fields is performed. On the basis of this study, we develop an algorithm for numerical calculation and demonstrate properties of waveguide modes excited because of presence of transversal boundary. Moreover we perform direct numerical simulation using Comsol Multiphysics. The comparison of results of our algorithm with simulations is given, and the good agreement between both methods is demonstrated.

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WEPSB045

The Way To Improve Conformity Of Proton Therapy

proton, target, scattering, ion

464

I.A. Yakovlev, S.V. Akulinichev, Y.K. Gavrilov
RAS/INR, Moscow, Russia
R.D. Ilich
VINCA, Belgrade, Serbia

Funding: Institute for nuclear research of RAS (INR), Moscow 117312, Russia
In the case of small tumors the pencil beam width may be comparable with the target size. In these cases the application of classic method of passive beam scattering with a one-stage formation of dose distribution may be reasonable. However, the last method in its standard implementation fails to provide the dose conformity: either the maximal dose exceeds the tumor volume on its proximate site or the dose deviates too much within the tumor. In order to overcome this shortcoming of the passive scattering method, we suggest a new construction of a two-component ridge filter (the corresponding patent is pending). We have performed a series of calculations with the Monte-Carlo code SRNA in order to find the optimal construction from the point of view of dose delivery accuracy and of the device manufacturability. With that ridge filter the 95% isodose does not notably leave the tumor volume. The usual 'wings' of isodoses on proximate side are now absent and the volume of irradiated healthy tissue is significantly reduced. The experimental tests with proton beams are now in progress.

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WEPSB050

Laboratory Model of Thermoradiotherapy Facility: Experimental Results

dipole, experiment, controls, simulation

477

S.M. Polozov, A.M. Fadeev, S.M. Ivanov
MEPhI, Moscow, Russia
E.A. Perelstein
JINR, Dubna, Moscow Region, Russia

Hyperthermia combined with radiotherapy (thermoradiotherapy) or with chemotherapy is one of promising approach to improve the cancer treatment efficiency. The treatment of deep-situated tumors is a problem which can not be solved by means of traditional facilities developed for whole-body or regional hyperthermia because of overheating of healthy tissues and blood. A cylindrical array of independently phased dipoles was proposed to focus electromagnetic energy in deep-situated tumors. It was early shown by simulations that array of eight independently phased dipoles operating on 100-150 MHz can be used to focus energy in an ellipsoid of 30-50 mm in size. Later the laboratory model of thermoradiotherapy facility was developed and constructed and series of experiments were carried out. Results of experiments and its comparison with simulations will discuss in report.

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WEPSB056

Study of Oil Wells With the Use of Accelerator Tubes, Time and Energy Spectrometers of Neutrons and Gamma Rays in a Single Geophysical Complex

neutron, plasma, vacuum, laser

490

A.E. Shikanov, B.Y. Bogdanovich, A.V. Il'inskiy, A.A. Isaev, K.I. Kozlovskiy, A. Nesterovich, E.D. Vovchenko
MEPhI, Moscow, Russia

The report discusses the finding of the coefficient of oil saturation of the reservoir by of nuclear methods. For this purpose, the data about pulse and the activation neutron logging and spectral logging of natural gamma activity are used in a single geophysical complex. As sources of neutron radiation can been applied accelerating tube (AT) based on different ion sources, such as plasma discharge with oscillating electrons (gas AT), vacuum arc and laser-plasma (vacuum AT). For investigation of the oil reservoir, in particular with heavy oil, we discuss the prospects of using vacuum accelerating tube based on a laser-plasma source of deuterons with coaxial acceleration geometry and pulsed magnetic isolation of electrons.

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WEPSB059

Realization of Positron Annihilation Spectroscopy at LEPTA Facility

positron, electron, detector, ion

496

K. Siemek, V.I. Hilinov, P. Horodek
JINR/DLNP, Dubna, Moscow region, Russia
E.V. Ahmanova, M.K. Eseev, A.G. Kobets, I.N. Meshkov, O. Orlov, A.A. Sidorin
JINR, Dubna, Moscow Region, Russia
M.K. Eseev
NAFU, Arkhangelsk, Russia
A.G. Kobets
IERT, Kharkov, Ukraine

Positrons are used in materials science to study open volume defects. Several positron annihilation spectroscopy (PAS) techniques exist. These methods are based on detection of the 511 keV gamma quantum. The first method is the analysis of the Doppler broadening of annihilation line and provide information about defect concentration. Both annihilation quanta can be observed. Coincidence observation of two quanta gives additional information about the environment around defect. The second method is based on lifetime concept, which allows to distinguish type of defects. Nowadays, positron beams are of great interest for materials science. Using a low energy, monoenergetic beam it is possible to control the positron penetration depth from the sample surface to a depth of several microns. Thus, the beam can be used to characterize thin films, analysis of surface modification, studying influence of ions on matter etc. This report aims to present a current status of realization and progress in PAS methods at LEPTA facility at JINR.

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WEPSB065

Development of the Beam Diagnostic System for the Radiobiological Research at the Proton Linear Accelerator I-2

proton, experiment, diagnostics, detector

508

A.V. Bakhmutova, A. Golubev, A.V. Kantsyrev, N.V. Markov
ITEP, Moscow, Russia

Funding: RFBR 16-32-00393
At the present time at ITEP there is a possibility to investigate the biological mechanisms of the low energy protons on living systems on linear accelerator I-2. The unique high current linear accelerator allows to obtain 20 MeV intense proton beams. They could be used for the radiobiological research in a wide range of absorbed doses and for different cell types. Currently some preliminary experiments were made to specify diagnostic equipment required for further investigations. This work presents the main results on the proton beam parameters measurements such as beam current, beam cross section dimension as well as the measurements of the absorbed dose and depth dose distribution using different types of detectors.

Poster WEPSB065 [9.739 MB]

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WEPSB068

Radiation From Open-Ended Flanged Waveguide With Dielectric Loading

simulation, vacuum, electron, extraction

515

V.V. Vorobev, S.N. Galyamin, A.A. Grigoreva, A.V. Tyukhtin
Saint Petersburg State University, Saint Petersburg, Russia

Funding: The work is supported by the Grant of the President of Russian Federation (No. 6765.2015.2) and the Grants from Russian Foundation for Basic Research (No. 15-32-20985, 15-02-03913).
Terahertz radiation is considered as a promising tool for a number of applications. One possible way to emit THz waves is to pass short electron bunch through a waveguide structure loaded with dielectric. Previously we considered the extraction of radiation from the open end of the waveguide with dielectric loading in both approximate and rigorous formulation. We also developed a rigorous approach based on mode-matching technique and modified residue-calculus technique for the case when the waveguide with dielectric is co-axial with infinite waveguide with greater radius. The study presented is devoted to the case when the dielectric loaded waveguide has a flange and enclosed into another waveguide with a greater radius. The case of the flanged waveguide in the unbounded vacuum space can be described as the limiting case of the problem under consideration. We perform analytical calculation (based on mode-matching technique and modified residue-calculus technique) and direct numerical simulation.

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WEPSB069

Radiation of a Bunch Flying from the Open End of a Waveguide with a Dielectric Loading

simulation, vacuum, electron, electromagnetic-fields

518

S.N. Galyamin, A.V. Tyukhtin, V.V. Vorobev
Saint Petersburg State University, Saint Petersburg, Russia
A. Altmark, S. Baturin
LETI, Saint-Petersburg, Russia

Funding: Work is supported by the Grant of the President of Russian Federation (No. 6765.2015.2) and the Grant from Russian Foundation for Basic Research (No. 15-32-20985).
In this paper we proceed with our investigation of Terahertz emission from beam moving in waveguide structures with dielectric layer*. Recently we have considered an open-ended waveguide (with uniform dielectric filling) placed inside regular vacuum waveguide of a larger radius and excited by a single incident waveguide mode**. Here we present analytical results for the case where the structure is excited by a moving charge. We also perform simulations using CST® PS code and compare results.
* S.N. Galyamin, A.V. Tyukhtin, S.S. Baturin, S. Antipov, Opt. Express 22(8) 8902 (2014).
** S.N. Galyamin, A.V. Tyukhtin, S.S. Baturin, V.V. Vorobev, A.A. Grigoreva, in Proc. IPAC'16, pp. 1617-1619.

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THPSC003

The Design of Permenant Magnet Spread System for 0.5 MeV Irradiation Accelerator

electron, permanent-magnet, high-voltage, dipole

541

J. Huang, Q.S. Chen, K. Fan, M. Fan, W. Qi, Y.Q. Xiong, J. Yang, L.G. Zhang
HUST, Wuhan, People's Republic of China
T. Yu, C. Zuo
Huazhong University of Science and Technology, State Key Laboratory of Advanced Electromagnetic Engineering and Technology,, Hubei, People's Republic of China

Funding: Supported by Natural Science Foundation (11505068)
The traditional electron beam scanning magnet has many disadvantages, for example, the regulatory of excitation current is very complex and the irradiation uniformity as well as the irradiation area is very difficult to improve and expand. Thus the author of the paper proposes an innovative technology of a permanent magnet spread system for 10 MeV irradiation accelerator which uses a special configuration of the magnetic field to spread electron beam bunch directly and would remarkably improve the spread uniformity, simplify the accelerator and would be helpful to protect the titanium window and expand the irradiation area. Also, the technology could as well be used on the electron beam irradiation of those irregular structured objects of large size.

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THPSC008

Magnetic Systems for Beam Transport at Extraction Channels of ILU Accelerators

electron, extraction, focusing, dipole

556

V.V. Bezuglov, A.A. Bryazgin, B.L. Faktorovich, E.N. Kokin, V.E. Nekhaev, A.D. Panfilov, V.M. Radchenko, E.A. Shtarklev, V.O. Tkachenko, A. YU. Vlasov, L.A. Voronin
BINP SB RAS, Novosibirsk, Russia

This paper is devoted to magnetic systems for beam transport at extraction channels of electron industrial accelerators of the ILU type. The extraction systems meant for energy of the accelerated electrons up to 10 MeV and beam power up to 100 kW are described. The analysis of their work subject to the processes connected with the induced eddy currents in metal walls of beam scanning chambers is made; special attention is paid to forming of the dose field in a radiation zone. In paper the magnetic system for bending of the nonmonochromatic beams is offered to application. The essence of the described device consists in application of two identical magnetic mirrors in which distribution of magnetic field on depth is formed so that natural rise of magnetic field intensity on an entrance to a mirror is followed by decrease of this field under a certain law. In the issue of impact on charged particles of forces arising in cylindrical lenses of each mirror is possible to compensate angular divergence of strongly nonmonochromatic beams in gaps of magnetic mirrors and to receive after bending a beam with parameters close to phase characteristics of an input beam. The design procedure of such bending device and a general view of installation for experimental check of the offered bending system on electron beam are given in this paper.

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THPSC017

A Synchrotron Radiation Beamline Installed at BINP to Study the High Luminosity LHC Vacuum System

photon, electron, vacuum, synchrotron

572

A.A. Krasnov, V.V. Anashin, A.M. Semenov, D.B. Shwartz
BINP SB RAS, Novosibirsk, Russia
V. Baglin, P. Chiggiato, B. Henrist
CERN, Geneva, Switzerland
D.B. Shwartz
NSU, Novosibirsk, Russia

In the framework of the HL-LHC project, the vacuum performance of new surface material needs to be studied. In particular, a-C coating is proposed as an anti-multipactor surface in the HL-LHC Inner Triplets. Since the protons in the HL-LHC Inner Triplets will generate synchrotron radiation (SR) with ~ 10 eV critical energy and ~ 10¹⁶ ph/m/s flux, it is therefore of great importance to study the impact of such photons on a-C coating held at room and cryogenic temperature and compare the results against present LHC material. This paper describes construction and parameters of experimental set-up based on new Synchrotron Radiation beamline from booster synchrotron BEP at BINP. The experimental program releasing in collaboration between CERN and BINP for performing measurements of photon stimulated gas desorption, photon distribution and photo-electron emission provoked by synchrotron radiation are presented

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THPSC026

The Automation of Energy Ramping for the Main Storage Ring of KSRS

controls, power-supply, synchrotron, synchrotron-radiation

597

Y.V. Krylov
RRC, Moscow, Russia
E.V. Kaportsev, K. Moseev, N.I. Moseiko, A.G. Valentinov
NRC, Moscow, Russia

Kurchatov Synchrotron Radiation Source (KSRS) is the complex of electron synchrotrons specialized as a source of synchrotron radiation. The running cycle of KSRS main storage ring includes the energy ramping from 450 MeV up to 2.5 GeV. Fast and reliable energy ramping algorithm was developed and implemented at KSRS main storage ring. Using the hardware decisions on the basis of the NI units and CAN-bus interface, the control system is developed and launched for the power supplies of magnetic elements.

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THPSC037

Loss Analysis of Insulated Core Transformer High Voltage Power Supply

high-voltage, power-supply, electron, electronics

620

Y.F. Zhang, J. Huang, M.K. Li, H. Liang, W. Qi, Y.Q. Xiong, J. Yang, L.G. Zhang, C. Zuo
HUST, Wuhan, People's Republic of China
T. Yu
Huazhong University of Science and Technology, State Key Laboratory of Advanced Electromagnetic Engineering and Technology,, Hubei, People's Republic of China

Insulated core transformer (ICT) electron accelerator is an ideal prototype in low energy radiation processing industry, and ICT high voltage power supply is the essential apparatus. Conventional ICT high voltage power supply uses laminated silicon steel sheets as magnetic cores and works at 50 Hz. In a novel design of the ICT high voltage power supply, the magnetic cores made of ferrite material are adopted to increase the frequency and improve the performance. Focusing on the new scheme, the loss calculation of the high voltage power supply was carried out. The loss of ferrite magnetic cores and the windings was analysed and simulated.

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THPSC048

Measurement of Gamma Beams Profile by Cherenkov Radiation in Fibers

photon, experiment, betatron, electron

638

A.V. Vukolov, A.I. Novokshonov, A. Potylitsyn, E. Shuvalov, S.R. Uglov
TPU, Tomsk, Russia

Funding: This work was partially supported by the Russian Ministry of Education and Science within the program 'Nauka' Grant 3.709.2014/K and by RFBR Grant 15-52-50028-YaF_a.
Results of gamma beam profile experimental investigations by measuring of Cherenkov radiation* generated in a fiber with 0.6 mm thickness and in a glass rod with 5 mm diameter are presented. These experiments were carried out on bremsstrahlung beam of the linear accelerator 'Philips SL-75' with 6 MeV energy and 4 Gr/min dose rate at 1 m distance. In works ** and *** authors have showed feasibility of Cherenkov radiation applying for high energy beam diagnostics. In our work the Cherenkov radiation yield dependence on the fiber orientation relative to the beam axis was investigated and showed that the maximal light yield corresponds to the angle between fiber and beam axes closed to the Cherenkov angle. When dose rate is higher than 1 Gr/min at 1 m distance one can register a light yield for the fiber orientation even less than Cherenkov angle. We suppose that the observed effect is connected with generating of electromagnetic shower by initial photons. Proposed technique of bremsstrahlung and electron **** beams profile measurements differs from well-known techniques based on ionization chambers due to its insensitive to low energy part of the bremsstrahlung spectrum and to undesirable background. Using this technique for beam profile scanning it is possible to construct compact and noise insensitive device relative to the well-known systems. It is also possible to reach submillimeter resolution with this device.
* Jelley J V, Cherenkov Radiation and its Application, 1958, Pergamon Press.
** Wulf F, Korfer M, Proc. of DIPAC 2009, p. 411.
*** A. Murokh, R. Agustsson etc., Proc of IPAC2012, p.996.
**** A V Vukolov, A I Novokshonov, A P Potylitsyn, S R Uglov, Proc of RREPS-15, 2015, Sain-Petersburg

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THPSC050

Possibilities of Diffraction Radiation Non-Destructive Diagnostics for Non- and Moderately Relativistic Beams

proton, target, diagnostics, simulation

644

D.A. Shkitov, A. Potylitsyn
TPU, Tomsk, Russia

Funding: The work was partially supported by the RFBR grant No 15-52-50028.
In order to design and construct new modern accelerators with high brightness beams, the development new non-destructive diagnostic tools for accelerated beams is required. Diffraction radiation (DR) is generated by charged particles moving in the vicinity of the conductive target. The DR technique is used successfully for non-destructive diagnostics for ultrarelativistic beams*,**. For non-relativistic and moderately relativistic charged particles beams (g ~ a few tens or less, g is the Lorentz factor) non-destructive DR diagnostics can be applied also if a beam intensity is high enough due to coherent effect. Intensity of coherent radiation is proportional to the squared bunch population. In this report estimations of non-destructive bunch diagnostics possibility based on DR for the beam parameters of a few machines are presented. Those estimations were performed for electron machine: PITZ project*** and laser wakefield accelerator****, and moreover for ESS proton linear accelerator*****. First evaluation of whole wavelength range DR from 4-mm-slit target gave about 56 mJ from one macro-pulse of ESS accelerator. Amplification of DR spectral-angular intensity due to coherent effect will be in N = 10⁸ times than incoherent radiation from the same beam, where N is the bunch population.
* P. Karataev et al., PRL 93 (2004) 244802
** A. Cianchi et al., PRST-AB 14 (2011) 102803
*** http://pitz.desy.de
**** B.S. Rao et al., PRST-AB 17 (2014) 011301
***** https://europeanspallationsource.se

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THPSC054

Modernization of the Electron Beam Stabilization System in the KSRS

database, controls, synchrotron, synchrotron-radiation

656

K. Moseev, E.V. Kaportsev, Y.V. Krylov, A.G. Valentinov
NRC, Moscow, Russia

The stabilization system is designed to prevent drift of the spot SR at the experimental stations by local changes of the orbit. This system was developed and implemented about twelve years ago as an element of the ACS and worked well. Produced by modernization has led to the need of adaptation of the system of stabilization not only in hardware but also in software. Work on updating of the stabilization system and will be shown next.

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THPSC063

System of Thermomonitoring and Thermostabilizing of Kurchatov Synchrotron Radiation Source

controls, synchrotron, synchrotron-radiation, electron

680

N.I. Moseiko, E.V. Kaportsev, K. Moseev, A.G. Valentinov
NRC, Moscow, Russia
Y.V. Krylov
RRC, Moscow, Russia

The modern system of thermomonitoring and thermostabilizing (TERMOCS) of KSRS - Kurchatov synchrotron radiation source is described. The TERMOCS system provides: a monitoring of temperatures of the magnets and RF-resonators of KSRS; informing operator on violations of the course of technological process; data protection from illegal access; an archiving and displaying of archive data in a trend type. The system includes 480 temperature sensors of the AD592 type, providing the accuracy of measurements 0,2 C. System of thermo stabilizing of the linear accelerator - the proportional integral differentiating regulator for support of stability of temperatures at the level of 0,05 C. During creation of the system the modern decisions on the basis of the modular complexes of NI, the modern servers and the Citect SCADA software system were used.

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THPSC064

Monitoring of Low Intensity Ion Beams at FLNR Accelerator Complex

detector, ion, cyclotron, diagnostics

683

S. Mitrofanov, Yu.G. Teterev
JINR, Dubna, Moscow Region, Russia
A.I. Krylov
JINR/FLNR, Moscow region, Russia

FLNR JINR host experimental researches in wide area of applied science, including medical, biological and radiation hardness investigations, where the beam diagnostics plays the key role. We provide beam monitoring at all stages of the experiment: inside the cyclotron, beam transport and ion beam profile visualization close to the physical target. The detailed overview of beam control and diagnostic solutions used in FLNR JINR for the low intensity and highly charged ion beams parameters evaluation will be presented.

Poster THPSC064 [4.715 MB]

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THPSC065

Diagnostics of Accelerator Beams by the Dependence of the Vavilov-Cherenkov Radiation Intensity on the Refractive Index of the Radiator "n"

electron, photon, detector, microtron

686

K.A. Trukhanov
SSC RF- IBMP RAS, Moscow, Russia
A.I. Larkin
NRNU, Moscow, Russia
V.I. Shvedunov
MSU, Moscow, Russia

The report presents the results of development the method TLSH* for finding of the particle speed distribution (PSD) in beams of accelerators. PSD is deduced from the Volterra integral equation of the first kind with the right part, which is by the dependence of Cherenkov radiation intensity (ChRI) from n, experimentally obtained for the given beam. PSD is the second derivative of ChRI. The problem of stability of the second derivative is solved by attracting the priori information (for example, nonnegative of the solution). Using optical dispersion of radiator is discussed. It enables to find PSD even in the single cluster of particles. The possibility of determining the PSD in the cross section beam is discussed too. The method also enables to find PSD upon a noticeable transverse speed of the particles in the beam. The method is virtually non-destructive in many cases.
*Measurement of the distributions of particle velocity in the accelerator beam on the basis of the Vavilov-Cherenkov radiation at optical and microwave ranges. Trukhanov K. A., Larkin A. I., Shvedunov V. I. Izv. RAS. Ser. Phys. 2010. V. 74, No. 11, Pp. 1665-1668.

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THPSC068

Integrated Inspection Method of Motor Transports Based on Acceleration Technology

neutron, controls, electron, detector

692

A.M. Fialkovsky, P.O. Klinovsky, K.V. Kotenko, V.P. Malyshev, T.R. Virkunen
NIIEFA, St. Petersburg, Russia

Integrated inspection method of motor transports was suggested based on linear electron accelerator and neutron generator, which helps to detect substances forbidden for carrying, including explosives, narcotic drugs and fissionable materials. The linear high-frequency electron accelerator is a source of X-ray bremsstrahlung. The result of scanning is an introscopical image of a motor transport with color-selected suspicious substances. The neutron activation analysis of these substances with neutron generator as a neutron source lets detect elemental substance composition as well as identify explosives or narcotic drugs. This article contains accelerator specifications, which lets implement suggested method.

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THPSC084

The New Control for Magnet System of KSRS

controls, electron, software, synchrotron

727

E.V. Kaportsev, Y.V. Krylov
RRC, Moscow, Russia
K. Moseev, N.I. Moseiko, A.G. Valentinov
NRC, Moscow, Russia

The running cycle of Kurchatov Synchrotron Radiation Source (KSRS) includes the injection of electrons with energy 80 MeV from the linear accelerator in the booster storage ring Siberia-1, the accumulation of a electron current up to 400 mA and, then, electron energy ramping up to 450 MeV with the subsequent extraction of electrons in the main ring, storage ring Siberia-2, and accumulation there up to 300 mA, and at last the energy ramping up to 2.5 GeV. Several years ago, a modernization of the current system of automated control systems (ACS) has started. This article presents one of the most important parts - the new control subsystem of the magnet system

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