RuPAC2016 - List of Keywords (acceleration)

Paper	Title	Other Keywords	Page
TUZMH01	Status of U-70	proton, extraction, target, flattop	44
	S.V. Ivanov IHEP, Moscow Region, Russia
	Funding: National Research Centre "Kurchatov Institute" The report overviews present status of the Accelerator Complex U70 at IHEP of NRC "Kurchatov Institute". The emphasis is put on the recent activity and upgrades implemented since the previous conference RuPAC-2014, in a run-by-run chronological ordering. * on behalf of the U70 staff
	Slides TUZMH01 [6.858 MB]
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WECAMH05	Optimization and Simuations of Beam Dynamics in APF Accelerators	linac, simulation, rfq, ion	70
	D.A. Ovsyannikov, V.V. Altsybeyev Saint Petersburg State University, Saint Petersburg, Russia
	Design problem of APF accelerator for ensurance enough high quality of output beam is considered. As we know, this problem is not easy because we have to achieve stability of longitudinal and transversal motions simultaneously. One of the first significant results in this subject were obtained by V. V. Kushin. In this work the problems of optimizations of intense ion beam are considered. The optimazation approaches for some beam characteristics improving (acceleration and transmission rates) are considered. Obtained results are confirmed by particle in cell simulations.
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THCAMH02	Electron Accelerators Series ILU and Prospects of Their Application in the Food Industry	electron, radiation, 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]
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THYMH02	Hadron Therapy Research and Applications at JINR	cyclotron, proton, extraction, ion	123
	G. Shirkov, S. Gurskiy, O. Karamyshev, G.A. Karamysheva, N.A. Morozov, E.V. Samsonov, S.G. Shirkov, G.V. Trubnikov JINR, Dubna, Moscow Region, Russia D.V. Popov JINR/DLNP, Dubna, Moscow region, Russia
	JINR has the unique experience in cancer treatment with proton beam during about 50 years. In 2005 the collaboration with IBA (Belgium) was established. During these years the technical design of the first carbon superconducting cyclotron C400 was successfully created, the construction of serial proton cyclotron C230 was significantly improved and the fist modernized cyclotron C235 was assembled, debugged and put in the test operation in Dubna in 2013. This C235 will be used soon in the first Russian medical center with proton therapy in Dimitrovgrad. In 2015 the joint project with ASIPP (Hefei, China) on design and construction of superconducting proton cyclotron SC200 was started. Two samples of SC200 should be created according to the Collaboration Agreement between JINR and ASIPP. One will be used for proton therapy in Hefei and the second one should be used to replace the synchrocyclotron Phasotron in investigations on proton therapy at JINR.
	Slides THYMH02 [29.140 MB]
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUCASH03	High Efficiency Stripping Extraction on 80 MeV H-minus Isochronous Cyclotron in PNPI	cyclotron, extraction, ion, H-minus	176
	S.A. Artamonov, A.N. Chernov, E.M. Ivanov, G.A. Riabov, V.A. Tonkikh PNPI, Gatchina, Leningrad District, Russia
	H-minus cyclotron has the advantage that high intensity internal beam can be extracted from the acceleration chamber with practically 100% efficiency by transformation H-minus ions into H-plus ion by using thin foil. The extraction system is consists from the probe with stripping foil, extraction window in the vacuum chamber and two correct magnets to match the extracted beam with beam transport line. The beam optics calculations in the measured magnetic field make it possible to find optimal relative position of the extraction system elements as well the parameters of the extracted beam with energy 40 - 80 MeV. At present time the beam is extracted from the chamber with efficiency 100 % and there is good agreement with the optic calculations.
	Slides TUCASH03 [5.581 MB]
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPSA006	Development of RF Accelerator on Parallel-Coupled Structure - Trend in Accelerator Technique	cavity, electron, focusing, coupling	219
	Y.D. Chernousov ICKC, Novosibirsk, Russia
	Development of parallel-coupled accelerating structure (PCS), creation of RF linier accelerator based on PCS is new and rapidly developing field of accelerator technology. Compared with conventional accelerating structures with serial communication - the standard traveling and standing waves structures, the PCS has a lot of features and advantages. There are many problems in the development of RF linear accelerators: breakdowns at high power levels, the destruction of the structure due to overheating, the excitation of higher-order mode, the decline of field strength along the structure, transients, beam loading, beam focusing, multipactor, radiation accelerator cleanliness, etc. PCS - the best accelerating structure for solving these problems.
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPSA008	Gradient Limitations for RF Accelerator on Parallel-Coupled Structure	cavity, accelerating-gradient, linac, vacuum	225
	Y.D. Chernousov ICKC, Novosibirsk, Russia I.V. Shebolaev ICKC SB RAS, Novosibirsk, Russia
	RF breakdown is the main gradient limitation for RF accelerator. It is believed that all the known ways to increase the accelerating gradient have been already investigated. These are increase in the frequency of the accelerating field, reduction in the pulse duration, the optimization of cavities form, selection of operating surface materials, preparation and training of accelerating structures. In this paper, we discuss the possibility of increasing the accelerating gradient due to the circuit design, i.e., the use of the parallel-coupled accelerating structure.
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPSA013	Investigation of a Second Order Method of RFQ Channel Optimization	controls, rfq, focusing, software	240
	O.I. Drivotin St. Petersburg State University, St. Petersburg, Russia D.A. Starikov Saint Petersburg State University, Saint Petersburg, Russia
	This report is devoted to a numerical method of solution of the RFQ structure optimization problem. The problem is considered as a control theory problem. Control functions representing geometry of the electrodes and a quality functional describing the beam are introduced. To solve the problem numerically these control functions are parametrized. The presented method is based on the computation of the derivatives of the first and the second order of the quality functional on the parameters. Results of investigation of efficiency of the method relatively to a method including computation of the derivatives only of the first order are presented.
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPSA015	Acceleration of Deuterons and Protons in Single RFQ Strucrure	rfq, ion, focusing, proton	247
	A.D. Ovsyannikov, D.A. Ovsyannikov, Y.A. Svistunov Saint Petersburg State University, Saint Petersburg, Russia A.P. Durkin MRTI RAS, Moscow, Russia
	Some aspects of acceleration of protons and deuterons in single RFQ are considered. Usually vane voltage for protons must be two times less than vane voltage for deuterons. If space charge is significant vane voltage for protons can be too small to reach high efficiency of bunching and focusing of protons beam. It is shown that a rising of voltage up to nominal value for deuterons leads to increasing of capture and transmission for protons. Another problem is concerned with a choice of radial matching section parameters, which are optimal for both beams (proton and deuterons) simultaneously. Methods of optimization are discussed. Analysis of particles dynamics is illustrated by calculation's results.
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPSA024	On Stabilization of Systems of Linear Equations with Linear Increasing Time Delay by Observation	controls, feedback, synchrotron, damping	261
	O.N. Chizhova, A.P. Zhabko Saint Petersburg State University, Saint Petersburg, Russia
	Differential-difference equations with time delay are often used in mathematical models describing the dynamics of beams of the charged particles. For example linear equation of the second order with a constant time delay describes in the smoothed approach dynamics of a beam of the charged particles in synchrotrons with a feedback system. However the time delay cannot always be considered constant. The time proportional delay can occur at acceleration of beams of the charged particles in the cyclotron. It should be noted that such time delay is unbounded and well known approaches are not applicable for stability analysis such systems. The stabilizing control for the system of linear equations could be constructed by the information on a state vector of the system. Sometimes the state vector is unknown but we know some linear combinations of its components. Then there is a problem on construction of the stabilizing control with incomplete information. In this paper we investigate a possibility of stabilization of system of linear equations with time proportional delay by the linear observation. Using the sufficient conditions of asymptotic stability of system of linear equations with linear increasing delay we obtain some conditions of existence of the asymptotic evaluation system of the original system. Then we use the asymptotic evaluation system for the construction of the stabilizing control and derive the sufficient conditions for the existence of such control.
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPSA028	QWR resonator Cavities Electrodynamics Simulations for new Nuclotron-NICA Injector	cavity, simulation, linac, impedance	273
	M. Gusarova, T. Kulevoy, M.V. Lalayan, S.M. Polozov, N.P. Sobenin, D.V. Surkov, S.A. Terekhov, S.E. Toporkov, V. Zvyagintsev MEPhI, Moscow, Russia A.V. Butenko, A.O. Sidorin, G.V. Trubnikov JINR, Dubna, Moscow Region, Russia V. Zvyagintsev TRIUMF, Canada's National Laboratory for Particle and Nuclear Physics, Vancouver, Canada
	New linac-injector for Nuclotron-NICA is planned to consist of quarter-wave coaxial cavities (QWR) having velocities of ~0.07c and ~0.12c (beam energy from 5 to 17 MeV). These cavities are to be superconducting and operating at 162 MHz. Current results of the QWR cavities electrodynamics simulations and geometry optimizations are presented.
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPSA038	The RF Power System for RFQ-Injector of Linac-20	rfq, ion, DTL, high-voltage	297
	V.G. Kuzmichev, A.V. Kozlov, T. Kulevoy, S.M. Polozov, D.N. Selesnev, Yu. Stasevich ITEP, Moscow, Russia A.V. Butenko JINR, Dubna, Moscow Region, Russia T. Kulevoy, S.M. Polozov MEPhI, Moscow, Russia
	In the frame of the Nuclotron-M project the electrostatic injector of LU-20 is replaced by a RFQ accelerator, which has been developed in ITEP. The construction of 400 kW, 145 MHz RF system for RFQ-injector are described. Pa-rameters and test results of the RF power system operated on the resistive load and on RFQ during ion beam accele-ration are presented
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPSA042	Software Complex "Dynpart" for the Calculation of Self-Consistent Beam Dynamics in Dielectric Wakefield Accelerating Structures	wakefield, electron, focusing, software	307
	I.L. Sheinman, A.E. Yakushkin LETI, Saint-Petersburg, Russia
	Dielectric waveguide structures are a basis for development of new generation of accelerators on the basis of a wakefield method of the charged particle acceleration, beam manipulation, and also free electron lasers. A self-coordinated dynamics of relativistic particle beams in a single layer cylindrical waveguide with dielectric filling is investigated. The computer code is developed based on mathematical expressions for the analysis of the radial dynamics. The possibility of modeling interaction of different types of particles in a bunch is realized. Influence of both own wake fields and external fields of focusing and deflection systems on bunch dynamics are analyzed.
	Poster TUPSA042 [0.860 MB]
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPSA043	Wake Field Components in a Rectangular Accelerating Structure With Dielectric Anisotropic Loading	wakefield, electron, radiation, 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]
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPSA058	Production of Intense Beams of Iron Ions from ECR Ion Source by MIVOC Method at the Cyclotron DC-60	ion, cyclotron, ion-source, injection	328
	A.E. Bondarchenko, V.N. Loginov JINR, Dubna, Moscow Region, Russia V.V. Alexandrenko, I.A. Ivanov, S.G. Kozin, A.E. Ryskulov, Y.K. Sambayev, M.V. Zdorovets INP NNC RK, Almaty, Kazakhstan
	The report describes the experiments carried out in 2015 at the accelerator complex DC-60 of Astana branch of the INP (Alma-Ata, Kazakhstan Republic), to develop methods for production of intense beams of milticharged ions of iron with the use of volatile compounds (Metal Ions from Volatile Compounds - MIVOC). As a result of performed work for the first time at DC-60 cyclotron a beam of iron ions was obtained, acceleration mode of 56Fe¹⁰⁺ ions to the energy of 1.75 MeV / nucleon was optimized.
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPSB005	On the Minimax Problem of Beam Dynamics Optimization	controls, rfq, linac, focusing	360
	M.A. Mizintseva, D.A. Ovsyannikov St. Petersburg State University, St. Petersburg, Russia
	The problem of simultaneous optimization of the ensemble of trajectories and some selected trajectory arises in the research of the charged particle beam dynamics. The present work suggests the use of a smooth functional for the evaluation of the selected trajectories and a minimax functional for the evaluation of the dynamics of the beam of trajectories. A combination of those functionals is considered.
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPSB008	About Behavior of Electrons and Ions in the Accelerating Interval	ion, electron, plasma, vacuum	371
	A.S. Chikhachev Allrussian Electrotechnical Institute, Moskow, Russia H.Y. Barminova MEPhI, Moscow, Russia
	The behavior of electron-ion ensemble accelerated in the diode is studied. Hot electrons are described by means of the distribution function which is a solution of the collisionless kinetic function depending not only from integrals of motion. To describe the cold ions the hydrodynamics equations are used. The possibility of the ion-sound velocity excess of the ions is shown. The expression for the electron gas pressure is received. The dependence of relative density of the ions on the coordinate is discussed in the case of closed phase trajectories.
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPSB011	About Development System for the Analysis of Charged Particle Beam Dynamics	controls, focusing, distributed, quadrupole	379
	M.Yu. Balabanov Saint Petersburg State University, Saint Petersburg, Russia
	Modern research process of scientific problems often requires large computational resources. To solve them we have to use distributed computing systems. Researcher groups need to use them simultanieously and mostly remotely. The paper describes build of the distributed system for collaborative research process. As example was chosen a problem of the optimization dynamics charged particle beams using high-performance computing systems. The solution of many topical tasks leads to nonlinear optimization problems for example the controlling beams of charged particles. Optimization is performed by minimizing some quality functional the choice of which is a corollary fact that the control functions which provides a functional minimum should determine the accelerating structure with the desired characteristics. The problem is usually formulated as finding the control functions for which the controlled system satisfies the given constraints. There is a necessity of the quality functional choice which ensures the problem solution. Research objectives: the development of a distributed information-computational system for the analysis of charged particle beam dynamics.
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPSB034	The Electromagnetic Field Structure in the Circular Waveguide with Transverse Boundary	vacuum, simulation, electromagnetic-fields, radiation	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.
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPSB046	A Cyclotron Complex for Acceleration of Carbon Ions	cyclotron, injection, ion, extraction	467
	V.L. Smirnov, S.B. Vorozhtsov JINR, Dubna, Moscow Region, Russia
	An accelerating complex for hadron therapy is proposed. Facility consists of two superconducting cyclotrons and is aimed to produce beams of 12C⁶⁺ ions with energy of 400 MeV/nucleon. Accelerator-injector is a compact 70 MeV/nucleon cyclotron. Main machine is separated sector cyclotron consisting of six magnets. Basic features of the main cyclotron are high magnetic field, compact size, and feasible design of a magnetic system. The advantages of the dual cyclotron design are typical of cyclotron-based solutions. The first design studies of the sector magnet of the main cyclotron show that the beam dynamics is acceptable with the obtained magnetic field. Due to its relatively compact size (outer diameter of 12 m) the complex can be an alternative to synchrotrons. Design study of the main cyclotron is described here.
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPSB060	Development of Positron Annihilation Spectroscopy at the LEPTA Facility	positron, target, electron, cryogenics	499
	A.A. Sidorin, E.V. Ahmanova, M.K. Eseev, A.G. Kobets, I.N. Meshkov, O. Orlov JINR, Dubna, Moscow Region, Russia M.K. Eseev NAFU, Arkhangelsk, Russia V.I. Hilinov, P. Horodek, I.N. Meshkov, K. Siemek JINR/DLNP, Dubna, Moscow region, Russia P. Horodek, K. Siemek IFJ-PAN, Kraków, Poland A.G. Kobets IERT, Kharkov, Ukraine
	The report aims to present the status of the development of the LEPTA facility for further enhancement of the positron annihilation spectroscopy (PAS) method application at the LEPTA facility. The research in solid state physics performed currently is based on slow monochromatic positron flux from the injector and Doppler PAS. The new positron transfer channel being under construction at the LEPTA allows us to develop more advanced PAS method - so called 'Positron Annihilation life-time spectroscopy' (PALS). It will enrich significantly the research program at the LEPTA. PAS method is sensitive to microdefects in solids. A pair of gamma quanta, born as a result of positron-electron annihilation carries information about the density of the defects that have the size less than 10 nm and are located at the depth from the surface of the material depending on the positron energy. New monochromatic positron source construction supplied with the autonomous cooling system with emitter-source of the activity of 30 mCi (iThemba LABS production) and new positron transfer channel are presented in report.
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPSB075	Beam Injector for Vacuum Insulated Tandem Accelerator	ion, ion-source, vacuum, high-voltage	529
	A.S. Kuznetsov, K.A. Blokhina, A.A. Gmyrya, A.V. Ivanov, D.A. Kasatov, A.M. Koshkarev, A.L. Sanin BINP SB RAS, Novosibirsk, Russia K.A. Blokhina, A.A. Gmyrya NSTU, Novosibirsk, Russia D.A. Kasatov, A.M. Koshkarev NSU, Novosibirsk, Russia
	Funding: Applied research is carrying out with the financial support of the Russian Federation represented by the Ministry of Education and Science of Russia (unique identifier RFMEFI60414X0066). The Vacuum Insulated Tandem Accelerator is built at the Budker Institute of Nuclear Physics. The accelerator is designed for development of the concept of accelerator-based boron neutron capture therapy of malignant tumors in the clinic.* In the accelerator the negative hydrogen ions are accelerated by the high voltage electrode potential to the half of required energy, and after conversion of the ions into protons by means of a gas stripping target the protons are accelerated again by the same potential to the full beam energy. During the facility development, the proton beam was obtained with 5 mA current and 2 MeV energy. To ensure the beam parameters and reliability of the facility operation required for clinical applications, the new injector was designed based on the ion source with a current up to 15 mA, providing the possibility of preliminary beam acceleration up to 120-200 keV. The paper presents the status of the injector construction and testing. B.F.Bayanov, et al. Nuclear Instr. and Methods in Physics Research A 413/2-3 (1998) 397-426. A. Ivanov, et al. Journal of Instrumentation 11 (2016) P04018. *Yu. Belchenko, et al. AIP Conference Proceedings 1097, 214 (2009); doi: 10.1063/1.3112515
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPSC004	Measuring System for FLNR Cyclotrons Magnetic Field Formation	cyclotron, controls, interface, resonance	544
	I.A. Ivanenko, V. Aleinikov, G.N. Ivanov JINR, Dubna, Moscow Region, Russia V.V. Konstantinov JINR/FLNR, Moscow region, Russia
	Since beginning of millennium, three new heavy-ion isochronous cyclotrons, DC72, DC60 and DC110, were created in FLNR, JINR. At the present time the activities on creation of the new cyclotron DC280 for Super Heavy Facility are carried out. The one of the main problem of cyclotron creation is a formation of the isochronous magnetic field. The FLNR measuring system bases on Holl probes and provide the measuring accuracy 10^-4. The paper presents the features, measuring and exploitation results of FLNR cyclotrons magnetic field formation.
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPSC013	The Nonsymmetrical Variant of the Nonferromagnetic Extraction Kicker Magnet of the NICA Booster	kicker, extraction, booster, injection	566
	V. Aleksandrov, A.A. Fateev, A. Tuzikov JINR, Dubna, Moscow Region, Russia
	Development and creation of the NICA acceleration complex are continued at JINR (Dubna). One of the main facilities of the complex is the Booster in which preliminary acceleration and cooling of an ion beam is performed. Further acceleration is fulfilled in the circular accelerator NUCLOTRON. The beam transfer from the Booster into the NUCLOTRON is provided by means of the fast extraction system and one of its central elements is the kicker magnet. For the beam deflecting into the extraction septum-magnet it is supposed to use the nonferrous kicker magnet consisting of two couples of conductors. Recent changes made in configuration of the Booster extraction section demand decrease of the kicker magnet length that leads to change of the beam extraction scheme. This report is devoted to the choice of the alternative design of the magnet (the nonsymmetrical variant).
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPSC041	New Superconducting Linac Injector Project for Nuclotron-Nica: Current Results	linac, proton, simulation, focusing	626
	S.M. Polozov, M. Gusarova, T. Kulevoy, M.V. Lalayan, A.V. Samoshin, S.E. Toporkov, V. Zvyagintsev MEPhI, Moscow, Russia M.A. Baturitski, S.A. Maksimenko INP BSU, Minsk, Belarus A.V. Butenko, A.O. Sidorin, G.V. Trubnikov JINR, Dubna, Moscow Region, Russia A.A. Marysheva, V.S. Petrakovsky, I.L. Pobol, A.I. Pokrovsky, D.A. Shparla, S.V. Yurevich Physical-Technical Institute of the National Academy of Sciences of Belarus, Minsk, Belarus V. Zvyagintsev TRIUMF, Canada's National Laboratory for Particle and Nuclear Physics, Vancouver, Canada
	The joint collaboration of JINR, NRNU MEPhI, INP BSU, PTI NASB, BSUIR and SPMRC NASB started in 2015 a new project on the development of superconducting cavities production and test technologies and new linac-injector design. This linac intend for the protons acceleration up to25 MeV (up to 50 MeV after upgrade) and light ions acceleration up to ~7.5 MeV/u for Nuclotron-NICA injection. Current status of linac general design and results of the beam dynamics simulation and SRF technology development are presented in this report.
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPSC047	A Faraday Cup for a Low Charge LWFA Electron Beam Measurement	electron, laser, simulation, plasma	635
	V. Gubin, V.I. Trunov Institute of Laser Physics, SB RAS, Novosibirsk, Russia V.V. Gambaryan, A.E. Levichev, Yu. Maltseva, P.V. Martyshkin, A.A. Pachkov, S.N. Peshekhonov BINP SB RAS, Novosibirsk, Russia
	Nowadays laser wakefield acceleration (LWFA) is considered as one a perspective method for GeV electron beam production. Combination of laser accelerated electrons and Compton backscattering of probe light beam opens possibility to create the table top source of femtosecond light beam in x-ray and gamma range. Project of laser-driven Compton light source started in ILP SB RAS in collaboration with BINP SB RAS. Production of 1-10 pC electron beams sub-ps time range duration with energies up to 100 MeV is expected as a result of the first stage of the project. Since energy of electrons does not exceed of 100 MeV, it allows using Faraday cup (FC) with reasonable dimensions, instead of commonly used integrating current transformer (ICT). Geometry of FC was optimized taking into account of beam stopping simulation as well as low capacity requirement. RF properties, simulation of the system operation were carried out. System has been tested at the VEPP-5 electron linac. Results of development and testing of this FC are presented.
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPSC053	The Pepper-Pot Emittance Measuring Device at the 400 keV H-minus LEBT Channel	emittance, H-minus, ion, linac	653
	V.S. Klenov, S. Bragin, O.T. Frolov, S.E. Golubovski, O.V. Grekhov, O. Volodkevich, V. Zubets RAS/INR, Moscow, Russia
	The emittance measuring device has been developed for operational control of INR RAS linac 400 keV H-minus injector beam parameters. It includes the "pepper-pot", the quartz screen, the CCD camera, PC, the software for camera data processing and beam phase portrait formation. The device has been mounted at the first straight section extension of H-minus LEBT after 45 degree bending magnet. When the bending magnet is switched off the device is possible to measure and to represent single shot beam phase portrait. The results of the H-minus beam emittance measurements and the device performance have been discussed.
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPSC056	Proposal to Symmetric Quench Detection at Superconducting Elements by Bridge Scheme Usage	detector, booster, superconductivity, collider	662
	E.V. Ivanov JINR, Dubna, Moscow Region, Russia A.O. Sidorin, A.L. Svetov JINR/VBLHEP, Dubna, Moscow region, Russia
	In the frame of the NICA project two new superconducting accelerators will be constructed - the Booster and the NICA collider. Specialized facility for manufacturing and testing of the SC magnets for the NICA and FAIR projects is under development at JINR. Proposal to quench detection system for these and similar facilities is described in this paper.
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPSC083	System of Geodetic Measurements for LIA-20	electronics, alignment, controls, monitoring	724
	A.G. Chupyra, E.A. Bekhtenev, G.V. Karpov BINP SB RAS, Novosibirsk, Russia E.A. Bekhtenev NSU, Novosibirsk, Russia
	The system of geodetic measurements for accelerator LIA-20 is presented. The system consists of two subsystems. The first one is hydrostatic level system and the second one is system with the stretched wire. The system of geodetic measurements controls vertical and horizontal shifts of the accelerating structures, and also their inclinations in the longitudinal and cross directions.
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Other Keywords

Page

TUZMH01

Status of U-70

proton, extraction, target, flattop

44

S.V. Ivanov
IHEP, Moscow Region, Russia

Funding: National Research Centre "Kurchatov Institute"
The report overviews present status of the Accelerator Complex U70 at IHEP of NRC "Kurchatov Institute". The emphasis is put on the recent activity and upgrades implemented since the previous conference RuPAC-2014, in a run-by-run chronological ordering.
* on behalf of the U70 staff

Slides TUZMH01 [6.858 MB]

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WECAMH05

Optimization and Simuations of Beam Dynamics in APF Accelerators

linac, simulation, rfq, ion

70

D.A. Ovsyannikov, V.V. Altsybeyev
Saint Petersburg State University, Saint Petersburg, Russia

Design problem of APF accelerator for ensurance enough high quality of output beam is considered. As we know, this problem is not easy because we have to achieve stability of longitudinal and transversal motions simultaneously. One of the first significant results in this subject were obtained by V. V. Kushin. In this work the problems of optimizations of intense ion beam are considered. The optimazation approaches for some beam characteristics improving (acceleration and transmission rates) are considered. Obtained results are confirmed by particle in cell simulations.

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THCAMH02

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

electron, radiation, 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]

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THYMH02

Hadron Therapy Research and Applications at JINR

cyclotron, proton, extraction, ion

123

G. Shirkov, S. Gurskiy, O. Karamyshev, G.A. Karamysheva, N.A. Morozov, E.V. Samsonov, S.G. Shirkov, G.V. Trubnikov
JINR, Dubna, Moscow Region, Russia
D.V. Popov
JINR/DLNP, Dubna, Moscow region, Russia

JINR has the unique experience in cancer treatment with proton beam during about 50 years. In 2005 the collaboration with IBA (Belgium) was established. During these years the technical design of the first carbon superconducting cyclotron C400 was successfully created, the construction of serial proton cyclotron C230 was significantly improved and the fist modernized cyclotron C235 was assembled, debugged and put in the test operation in Dubna in 2013. This C235 will be used soon in the first Russian medical center with proton therapy in Dimitrovgrad. In 2015 the joint project with ASIPP (Hefei, China) on design and construction of superconducting proton cyclotron SC200 was started. Two samples of SC200 should be created according to the Collaboration Agreement between JINR and ASIPP. One will be used for proton therapy in Hefei and the second one should be used to replace the synchrocyclotron Phasotron in investigations on proton therapy at JINR.

Slides THYMH02 [29.140 MB]

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUCASH03

High Efficiency Stripping Extraction on 80 MeV H-minus Isochronous Cyclotron in PNPI

cyclotron, extraction, ion, H-minus

176

S.A. Artamonov, A.N. Chernov, E.M. Ivanov, G.A. Riabov, V.A. Tonkikh
PNPI, Gatchina, Leningrad District, Russia

H-minus cyclotron has the advantage that high intensity internal beam can be extracted from the acceleration chamber with practically 100% efficiency by transformation H-minus ions into H-plus ion by using thin foil. The extraction system is consists from the probe with stripping foil, extraction window in the vacuum chamber and two correct magnets to match the extracted beam with beam transport line. The beam optics calculations in the measured magnetic field make it possible to find optimal relative position of the extraction system elements as well the parameters of the extracted beam with energy 40 - 80 MeV. At present time the beam is extracted from the chamber with efficiency 100 % and there is good agreement with the optic calculations.

Slides TUCASH03 [5.581 MB]

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPSA006

Development of RF Accelerator on Parallel-Coupled Structure - Trend in Accelerator Technique

cavity, electron, focusing, coupling

219

Y.D. Chernousov
ICKC, Novosibirsk, Russia

Development of parallel-coupled accelerating structure (PCS), creation of RF linier accelerator based on PCS is new and rapidly developing field of accelerator technology. Compared with conventional accelerating structures with serial communication - the standard traveling and standing waves structures, the PCS has a lot of features and advantages. There are many problems in the development of RF linear accelerators: breakdowns at high power levels, the destruction of the structure due to overheating, the excitation of higher-order mode, the decline of field strength along the structure, transients, beam loading, beam focusing, multipactor, radiation accelerator cleanliness, etc. PCS - the best accelerating structure for solving these problems.

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPSA008

Gradient Limitations for RF Accelerator on Parallel-Coupled Structure

cavity, accelerating-gradient, linac, vacuum

225

Y.D. Chernousov
ICKC, Novosibirsk, Russia
I.V. Shebolaev
ICKC SB RAS, Novosibirsk, Russia

RF breakdown is the main gradient limitation for RF accelerator. It is believed that all the known ways to increase the accelerating gradient have been already investigated. These are increase in the frequency of the accelerating field, reduction in the pulse duration, the optimization of cavities form, selection of operating surface materials, preparation and training of accelerating structures. In this paper, we discuss the possibility of increasing the accelerating gradient due to the circuit design, i.e., the use of the parallel-coupled accelerating structure.

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPSA013

Investigation of a Second Order Method of RFQ Channel Optimization

controls, rfq, focusing, software

240

O.I. Drivotin
St. Petersburg State University, St. Petersburg, Russia
D.A. Starikov
Saint Petersburg State University, Saint Petersburg, Russia

This report is devoted to a numerical method of solution of the RFQ structure optimization problem. The problem is considered as a control theory problem. Control functions representing geometry of the electrodes and a quality functional describing the beam are introduced. To solve the problem numerically these control functions are parametrized. The presented method is based on the computation of the derivatives of the first and the second order of the quality functional on the parameters. Results of investigation of efficiency of the method relatively to a method including computation of the derivatives only of the first order are presented.

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPSA015

Acceleration of Deuterons and Protons in Single RFQ Strucrure

rfq, ion, focusing, proton

247

A.D. Ovsyannikov, D.A. Ovsyannikov, Y.A. Svistunov
Saint Petersburg State University, Saint Petersburg, Russia
A.P. Durkin
MRTI RAS, Moscow, Russia

Some aspects of acceleration of protons and deuterons in single RFQ are considered. Usually vane voltage for protons must be two times less than vane voltage for deuterons. If space charge is significant vane voltage for protons can be too small to reach high efficiency of bunching and focusing of protons beam. It is shown that a rising of voltage up to nominal value for deuterons leads to increasing of capture and transmission for protons. Another problem is concerned with a choice of radial matching section parameters, which are optimal for both beams (proton and deuterons) simultaneously. Methods of optimization are discussed. Analysis of particles dynamics is illustrated by calculation's results.

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPSA024

On Stabilization of Systems of Linear Equations with Linear Increasing Time Delay by Observation

controls, feedback, synchrotron, damping

261

O.N. Chizhova, A.P. Zhabko
Saint Petersburg State University, Saint Petersburg, Russia

Differential-difference equations with time delay are often used in mathematical models describing the dynamics of beams of the charged particles. For example linear equation of the second order with a constant time delay describes in the smoothed approach dynamics of a beam of the charged particles in synchrotrons with a feedback system. However the time delay cannot always be considered constant. The time proportional delay can occur at acceleration of beams of the charged particles in the cyclotron. It should be noted that such time delay is unbounded and well known approaches are not applicable for stability analysis such systems. The stabilizing control for the system of linear equations could be constructed by the information on a state vector of the system. Sometimes the state vector is unknown but we know some linear combinations of its components. Then there is a problem on construction of the stabilizing control with incomplete information. In this paper we investigate a possibility of stabilization of system of linear equations with time proportional delay by the linear observation. Using the sufficient conditions of asymptotic stability of system of linear equations with linear increasing delay we obtain some conditions of existence of the asymptotic evaluation system of the original system. Then we use the asymptotic evaluation system for the construction of the stabilizing control and derive the sufficient conditions for the existence of such control.

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPSA028

QWR resonator Cavities Electrodynamics Simulations for new Nuclotron-NICA Injector

cavity, simulation, linac, impedance

273

M. Gusarova, T. Kulevoy, M.V. Lalayan, S.M. Polozov, N.P. Sobenin, D.V. Surkov, S.A. Terekhov, S.E. Toporkov, V. Zvyagintsev
MEPhI, Moscow, Russia
A.V. Butenko, A.O. Sidorin, G.V. Trubnikov
JINR, Dubna, Moscow Region, Russia
V. Zvyagintsev
TRIUMF, Canada's National Laboratory for Particle and Nuclear Physics, Vancouver, Canada

New linac-injector for Nuclotron-NICA is planned to consist of quarter-wave coaxial cavities (QWR) having velocities of ~0.07c and ~0.12c (beam energy from 5 to 17 MeV). These cavities are to be superconducting and operating at 162 MHz. Current results of the QWR cavities electrodynamics simulations and geometry optimizations are presented.

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPSA038

The RF Power System for RFQ-Injector of Linac-20

rfq, ion, DTL, high-voltage

297

V.G. Kuzmichev, A.V. Kozlov, T. Kulevoy, S.M. Polozov, D.N. Selesnev, Yu. Stasevich
ITEP, Moscow, Russia
A.V. Butenko
JINR, Dubna, Moscow Region, Russia
T. Kulevoy, S.M. Polozov
MEPhI, Moscow, Russia

In the frame of the Nuclotron-M project the electrostatic injector of LU-20 is replaced by a RFQ accelerator, which has been developed in ITEP. The construction of 400 kW, 145 MHz RF system for RFQ-injector are described. Pa-rameters and test results of the RF power system operated on the resistive load and on RFQ during ion beam accele-ration are presented

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPSA042

Software Complex "Dynpart" for the Calculation of Self-Consistent Beam Dynamics in Dielectric Wakefield Accelerating Structures

wakefield, electron, focusing, software

307

I.L. Sheinman, A.E. Yakushkin
LETI, Saint-Petersburg, Russia

Dielectric waveguide structures are a basis for development of new generation of accelerators on the basis of a wakefield method of the charged particle acceleration, beam manipulation, and also free electron lasers. A self-coordinated dynamics of relativistic particle beams in a single layer cylindrical waveguide with dielectric filling is investigated. The computer code is developed based on mathematical expressions for the analysis of the radial dynamics. The possibility of modeling interaction of different types of particles in a bunch is realized. Influence of both own wake fields and external fields of focusing and deflection systems on bunch dynamics are analyzed.

Poster TUPSA042 [0.860 MB]

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPSA043

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

wakefield, electron, radiation, 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]

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPSA058

Production of Intense Beams of Iron Ions from ECR Ion Source by MIVOC Method at the Cyclotron DC-60

ion, cyclotron, ion-source, injection

328

A.E. Bondarchenko, V.N. Loginov
JINR, Dubna, Moscow Region, Russia
V.V. Alexandrenko, I.A. Ivanov, S.G. Kozin, A.E. Ryskulov, Y.K. Sambayev, M.V. Zdorovets
INP NNC RK, Almaty, Kazakhstan

The report describes the experiments carried out in 2015 at the accelerator complex DC-60 of Astana branch of the INP (Alma-Ata, Kazakhstan Republic), to develop methods for production of intense beams of milticharged ions of iron with the use of volatile compounds (Metal Ions from Volatile Compounds - MIVOC). As a result of performed work for the first time at DC-60 cyclotron a beam of iron ions was obtained, acceleration mode of 56Fe¹⁰⁺ ions to the energy of 1.75 MeV / nucleon was optimized.

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPSB005

On the Minimax Problem of Beam Dynamics Optimization

controls, rfq, linac, focusing

360

M.A. Mizintseva, D.A. Ovsyannikov
St. Petersburg State University, St. Petersburg, Russia

The problem of simultaneous optimization of the ensemble of trajectories and some selected trajectory arises in the research of the charged particle beam dynamics. The present work suggests the use of a smooth functional for the evaluation of the selected trajectories and a minimax functional for the evaluation of the dynamics of the beam of trajectories. A combination of those functionals is considered.

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPSB008

About Behavior of Electrons and Ions in the Accelerating Interval

ion, electron, plasma, vacuum

371

A.S. Chikhachev
Allrussian Electrotechnical Institute, Moskow, Russia
H.Y. Barminova
MEPhI, Moscow, Russia

The behavior of electron-ion ensemble accelerated in the diode is studied. Hot electrons are described by means of the distribution function which is a solution of the collisionless kinetic function depending not only from integrals of motion. To describe the cold ions the hydrodynamics equations are used. The possibility of the ion-sound velocity excess of the ions is shown. The expression for the electron gas pressure is received. The dependence of relative density of the ions on the coordinate is discussed in the case of closed phase trajectories.

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPSB011

About Development System for the Analysis of Charged Particle Beam Dynamics

controls, focusing, distributed, quadrupole

379

M.Yu. Balabanov
Saint Petersburg State University, Saint Petersburg, Russia

Modern research process of scientific problems often requires large computational resources. To solve them we have to use distributed computing systems. Researcher groups need to use them simultanieously and mostly remotely. The paper describes build of the distributed system for collaborative research process. As example was chosen a problem of the optimization dynamics charged particle beams using high-performance computing systems. The solution of many topical tasks leads to nonlinear optimization problems for example the controlling beams of charged particles. Optimization is performed by minimizing some quality functional the choice of which is a corollary fact that the control functions which provides a functional minimum should determine the accelerating structure with the desired characteristics. The problem is usually formulated as finding the control functions for which the controlled system satisfies the given constraints. There is a necessity of the quality functional choice which ensures the problem solution. Research objectives: the development of a distributed information-computational system for the analysis of charged particle beam dynamics.

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPSB034

The Electromagnetic Field Structure in the Circular Waveguide with Transverse Boundary

vacuum, simulation, electromagnetic-fields, radiation

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.

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPSB046

A Cyclotron Complex for Acceleration of Carbon Ions

cyclotron, injection, ion, extraction

467

V.L. Smirnov, S.B. Vorozhtsov
JINR, Dubna, Moscow Region, Russia

An accelerating complex for hadron therapy is proposed. Facility consists of two superconducting cyclotrons and is aimed to produce beams of 12C⁶⁺ ions with energy of 400 MeV/nucleon. Accelerator-injector is a compact 70 MeV/nucleon cyclotron. Main machine is separated sector cyclotron consisting of six magnets. Basic features of the main cyclotron are high magnetic field, compact size, and feasible design of a magnetic system. The advantages of the dual cyclotron design are typical of cyclotron-based solutions. The first design studies of the sector magnet of the main cyclotron show that the beam dynamics is acceptable with the obtained magnetic field. Due to its relatively compact size (outer diameter of 12 m) the complex can be an alternative to synchrotrons. Design study of the main cyclotron is described here.

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPSB060

Development of Positron Annihilation Spectroscopy at the LEPTA Facility

positron, target, electron, cryogenics

499

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

The report aims to present the status of the development of the LEPTA facility for further enhancement of the positron annihilation spectroscopy (PAS) method application at the LEPTA facility. The research in solid state physics performed currently is based on slow monochromatic positron flux from the injector and Doppler PAS. The new positron transfer channel being under construction at the LEPTA allows us to develop more advanced PAS method - so called 'Positron Annihilation life-time spectroscopy' (PALS). It will enrich significantly the research program at the LEPTA. PAS method is sensitive to microdefects in solids. A pair of gamma quanta, born as a result of positron-electron annihilation carries information about the density of the defects that have the size less than 10 nm and are located at the depth from the surface of the material depending on the positron energy. New monochromatic positron source construction supplied with the autonomous cooling system with emitter-source of the activity of 30 mCi (iThemba LABS production) and new positron transfer channel are presented in report.

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPSB075

Beam Injector for Vacuum Insulated Tandem Accelerator

ion, ion-source, vacuum, high-voltage

529

A.S. Kuznetsov, K.A. Blokhina, A.A. Gmyrya, A.V. Ivanov, D.A. Kasatov, A.M. Koshkarev, A.L. Sanin
BINP SB RAS, Novosibirsk, Russia
K.A. Blokhina, A.A. Gmyrya
NSTU, Novosibirsk, Russia
D.A. Kasatov, A.M. Koshkarev
NSU, Novosibirsk, Russia

Funding: Applied research is carrying out with the financial support of the Russian Federation represented by the Ministry of Education and Science of Russia (unique identifier RFMEFI60414X0066).
The Vacuum Insulated Tandem Accelerator is built at the Budker Institute of Nuclear Physics. The accelerator is designed for development of the concept of accelerator-based boron neutron capture therapy of malignant tumors in the clinic.* In the accelerator the negative hydrogen ions are accelerated by the high voltage electrode potential to the half of required energy, and after conversion of the ions into protons by means of a gas stripping target the protons are accelerated again by the same potential to the full beam energy. During the facility development, the proton beam was obtained with 5 mA current and 2 MeV energy**. To ensure the beam parameters and reliability of the facility operation required for clinical applications, the new injector was designed based on the ion source with a current up to 15 mA***, providing the possibility of preliminary beam acceleration up to 120-200 keV. The paper presents the status of the injector construction and testing.
*B.F.Bayanov, et al. Nuclear Instr. and Methods in Physics Research A 413/2-3 (1998) 397-426.
**A. Ivanov, et al. Journal of Instrumentation 11 (2016) P04018.
***Yu. Belchenko, et al. AIP Conference Proceedings 1097, 214 (2009); doi: 10.1063/1.3112515

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPSC004

Measuring System for FLNR Cyclotrons Magnetic Field Formation

cyclotron, controls, interface, resonance

544

I.A. Ivanenko, V. Aleinikov, G.N. Ivanov
JINR, Dubna, Moscow Region, Russia
V.V. Konstantinov
JINR/FLNR, Moscow region, Russia

Since beginning of millennium, three new heavy-ion isochronous cyclotrons, DC72, DC60 and DC110, were created in FLNR, JINR. At the present time the activities on creation of the new cyclotron DC280 for Super Heavy Facility are carried out. The one of the main problem of cyclotron creation is a formation of the isochronous magnetic field. The FLNR measuring system bases on Holl probes and provide the measuring accuracy 10^-4. The paper presents the features, measuring and exploitation results of FLNR cyclotrons magnetic field formation.

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPSC013

The Nonsymmetrical Variant of the Nonferromagnetic Extraction Kicker Magnet of the NICA Booster

kicker, extraction, booster, injection

566

V. Aleksandrov, A.A. Fateev, A. Tuzikov
JINR, Dubna, Moscow Region, Russia

Development and creation of the NICA acceleration complex are continued at JINR (Dubna). One of the main facilities of the complex is the Booster in which preliminary acceleration and cooling of an ion beam is performed. Further acceleration is fulfilled in the circular accelerator NUCLOTRON. The beam transfer from the Booster into the NUCLOTRON is provided by means of the fast extraction system and one of its central elements is the kicker magnet. For the beam deflecting into the extraction septum-magnet it is supposed to use the nonferrous kicker magnet consisting of two couples of conductors. Recent changes made in configuration of the Booster extraction section demand decrease of the kicker magnet length that leads to change of the beam extraction scheme. This report is devoted to the choice of the alternative design of the magnet (the nonsymmetrical variant).

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPSC041

New Superconducting Linac Injector Project for Nuclotron-Nica: Current Results

linac, proton, simulation, focusing

626

S.M. Polozov, M. Gusarova, T. Kulevoy, M.V. Lalayan, A.V. Samoshin, S.E. Toporkov, V. Zvyagintsev
MEPhI, Moscow, Russia
M.A. Baturitski, S.A. Maksimenko
INP BSU, Minsk, Belarus
A.V. Butenko, A.O. Sidorin, G.V. Trubnikov
JINR, Dubna, Moscow Region, Russia
A.A. Marysheva, V.S. Petrakovsky, I.L. Pobol, A.I. Pokrovsky, D.A. Shparla, S.V. Yurevich
Physical-Technical Institute of the National Academy of Sciences of Belarus, Minsk, Belarus
V. Zvyagintsev
TRIUMF, Canada's National Laboratory for Particle and Nuclear Physics, Vancouver, Canada

The joint collaboration of JINR, NRNU MEPhI, INP BSU, PTI NASB, BSUIR and SPMRC NASB started in 2015 a new project on the development of superconducting cavities production and test technologies and new linac-injector design. This linac intend for the protons acceleration up to25 MeV (up to 50 MeV after upgrade) and light ions acceleration up to ~7.5 MeV/u for Nuclotron-NICA injection. Current status of linac general design and results of the beam dynamics simulation and SRF technology development are presented in this report.

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPSC047

A Faraday Cup for a Low Charge LWFA Electron Beam Measurement

electron, laser, simulation, plasma

635

V. Gubin, V.I. Trunov
Institute of Laser Physics, SB RAS, Novosibirsk, Russia
V.V. Gambaryan, A.E. Levichev, Yu. Maltseva, P.V. Martyshkin, A.A. Pachkov, S.N. Peshekhonov
BINP SB RAS, Novosibirsk, Russia

Nowadays laser wakefield acceleration (LWFA) is considered as one a perspective method for GeV electron beam production. Combination of laser accelerated electrons and Compton backscattering of probe light beam opens possibility to create the table top source of femtosecond light beam in x-ray and gamma range. Project of laser-driven Compton light source started in ILP SB RAS in collaboration with BINP SB RAS. Production of 1-10 pC electron beams sub-ps time range duration with energies up to 100 MeV is expected as a result of the first stage of the project. Since energy of electrons does not exceed of 100 MeV, it allows using Faraday cup (FC) with reasonable dimensions, instead of commonly used integrating current transformer (ICT). Geometry of FC was optimized taking into account of beam stopping simulation as well as low capacity requirement. RF properties, simulation of the system operation were carried out. System has been tested at the VEPP-5 electron linac. Results of development and testing of this FC are presented.

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPSC053

The Pepper-Pot Emittance Measuring Device at the 400 keV H-minus LEBT Channel

emittance, H-minus, ion, linac

653

V.S. Klenov, S. Bragin, O.T. Frolov, S.E. Golubovski, O.V. Grekhov, O. Volodkevich, V. Zubets
RAS/INR, Moscow, Russia

The emittance measuring device has been developed for operational control of INR RAS linac 400 keV H-minus injector beam parameters. It includes the "pepper-pot", the quartz screen, the CCD camera, PC, the software for camera data processing and beam phase portrait formation. The device has been mounted at the first straight section extension of H-minus LEBT after 45 degree bending magnet. When the bending magnet is switched off the device is possible to measure and to represent single shot beam phase portrait. The results of the H-minus beam emittance measurements and the device performance have been discussed.

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPSC056

Proposal to Symmetric Quench Detection at Superconducting Elements by Bridge Scheme Usage

detector, booster, superconductivity, collider

662

E.V. Ivanov
JINR, Dubna, Moscow Region, Russia
A.O. Sidorin, A.L. Svetov
JINR/VBLHEP, Dubna, Moscow region, Russia

In the frame of the NICA project two new superconducting accelerators will be constructed - the Booster and the NICA collider. Specialized facility for manufacturing and testing of the SC magnets for the NICA and FAIR projects is under development at JINR. Proposal to quench detection system for these and similar facilities is described in this paper.

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPSC083

System of Geodetic Measurements for LIA-20

electronics, alignment, controls, monitoring

724

A.G. Chupyra, E.A. Bekhtenev, G.V. Karpov
BINP SB RAS, Novosibirsk, Russia
E.A. Bekhtenev
NSU, Novosibirsk, Russia

The system of geodetic measurements for accelerator LIA-20 is presented. The system consists of two subsystems. The first one is hydrostatic level system and the second one is system with the stretched wire. The system of geodetic measurements controls vertical and horizontal shifts of the accelerating structures, and also their inclinations in the longitudinal and cross directions.

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)