RuPAC2016 - List of Keywords (experiment)

Paper	Title	Other Keywords	Page
WECAMH03	Analysis of the Particle Dynamics Stability in the Penning-Malmberg-Surko Trap	dipole, cyclotron, scattering, plasma	64
	I.N. Meshkov JINR, Dubna, Moscow Region, Russia M.K. Eseev NAFU, Arkhangelsk, Russia I.N. Meshkov, A.D. Ovsyannikov, D.A. Ovsyannikov, V.A. Ponomarev Saint Petersburg State University, Saint Petersburg, Russia
	Present report refers to the problem of the study of charged particle dynamics in the Penning-Malmberg-Surko trap. Various models of particle dynamics describing the magnetron and cyclotron motions are considered. Representation of the solutions in the form of a series is used for the magnetron motion. The problems of the stability of the magnetron motion are investigated.
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WECAMH04	Recent Experiments With High Energy Electron Cooler in COSY	electron, proton, target, storage-ring	67
	V.B. Reva, M.I. Bryzgunov, V.V. Parkhomchuk, D.N. Skorobogatov BINP SB RAS, Novosibirsk, Russia V. Kamerdzhiev FZJ, Jülich, Germany I.N. Meshkov JINR, Dubna, Moscow Region, Russia
	The 2 MeV electron cooling system at COSY-Jülich started operation in 2013. The cooling process was observed in the wide energy range of the electron beam from 100 keV to 1.26 MeV. Vertical, horizontal and longitudinal cooling was obtained with bunched and coasting proton beam. This report deals with electron cooling experiments at COSY with proton beam at energy 1.66 and 2.3 GeV. The proton beam was cooled at different regimes: RF on and off, barrier bucket RF, and cluster target on and off.
	Slides WECAMH04 [11.045 MB]
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WEYMH01	Development of MHF Conception at ITEP	proton, ion, linac, extraction	73
	N.N. Alexeev, A. Andreev, A. Kolomiets, V.I. Nikolaev, Yu.A. Satov, A. Shumshurov, V. Stolbunov, A. Zarubin ITEP, Moscow, Russia
	The conception of Multi-purpose Hadrons Facility (MHF) began to be discussed at ITEP in the late ~2010s when ITEP-TWAC facility was intensively exploited for physical and applied research with the use of accelerated proton and ion beams varied in a wide range of operating parameters. Technological developments have continued to expand the scope of beams utilizing in diverse fields of science, medicine, industry and education. The ITEP-TWAC facility was decommissioned in 2012 and continues to remain in a state of waiting for reasonable decision on its recovery and upgrade, but conception of MHF is alive and aims at creating a technological base of particle accelerator technique intended for generation of proton and ion beams, covering the needs of many areas of fundamental, applied and technological research and industrial applications, represents a significant scientific and practical interest for modern and future engineering community. Created MHF environment should obviously be friendly and flexible for collaboration with industry, universities, and other national and foreign labs to provide continuous intelligent and technological progress. The key components of the MHF mission and vision are presented.
	Slides WEYMH01 [5.810 MB]
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WEZMH01	Spallation Neutron Source at the 1 Gev Synchrocyclotron of PNPI	neutron, proton, target, resonance	90
	O.A. Shcherbakov, E.M. Ivanov, G.F. Mikheev, G.A. Petrov, G.A. Riabov, A.S. Vorobyev PNPI, Gatchina, Leningrad District, Russia
	A description of the spallation pulsed neutron source and neutron time-of-flight spectrometer GNEIS based on the 1 GeV proton synchrocyclotron of PNPI in Gatchina is presented. The main parameters of the neutron source and GNEIS are given in comparison with the analogous world-class facilities. The experimental capabilities of the GNEIS are demonstrated by the examples of some nuclear physics and applied research experiments carried out during four decades of its operation.
	Slides WEZMH01 [32.810 MB]
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FRCAMH01	Status of the Nuclotron	booster, operation, controls, TANGO	150
	A.O. Sidorin, N.N. Agapov, A.V. Alfeev, V. Andreev, V. Batin, O.I. Brovko, V.V. Bugaev, A.V. Butenko, D.E. Donets, A.V. Eliseev, V.V. Fimushkin, E.V. Gorbachev, A. Govorov, A.Yu. Grebentsov, E.V. Ivanov, V. Karpinsky, H.G. Khodzhibagiyan, A. Kirichenko, V. Kobets, A.D. Kovalenko, O.S. Kozlov, K.A. Levterov, V.A. Mikhailov, V.A. Monchinsky, A. Nesterov, Yu.M. Nozhenko, A.L. Osipenkov, S. Romanov, P.A. Rukojatkin, A.A. Shurygin, I. Slepnev, V. Slepnev, A.V. Smirnov, E. Syresin, G.V. Trubnikov, A. Tuzikov, B. Vasilishin, V. Volkov JINR, Dubna, Moscow Region, Russia A. Belov RAS/INR, Moscow, Russia I.V. Gorelyshev, A.V. Philippov JINR/VBLHEP, Dubna, Moscow region, Russia A.O. Sidorin St. Petersburg University, St. Petersburg, Russia
	Since last RuPAC two runs of the Nuclotron operation were performed: in January - March of 2015 and June 2016. Presently we are providing the run, which has been started at the end of October and will be continued up to the end of December. The facility development is aimed to the performance increase for current physical program realization and preparation to the NICA Booster construction and Baryonic Matter at Nuclotron experiment.
	Slides FRCAMH01 [20.777 MB]
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TUPSA046	Experimental Analysis of Dipole Modes in Elliptical Cavity	cavity, simulation, impedance, dipole	313
	Ya.V. Shashkov, M.V. Lalayan, N.P. Sobenin MEPhI, Moscow, Russia A. Orlov NRNU, Moscow, Russia
	The experimental measurements of transverse shunt impedance for higher order modes TM110 and TE111 for S-band elliptical cavity were carried out. The experiments using dielectric and metallic spheres as perturbing objects and with ring probe were done.
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TUPSA059	Production of Intense Metal Ion Beams From ECR Ion Sources Using the MIVOC Method	ion, cyclotron, ion-source, ECR	330
	A.E. Bondarchenko, S.L. Bogomolov, K.I. Kuzmenkov, V.Ya. Lebedev, V.N. Loginov JINR, Dubna, Moscow Region, Russia Z. Asfari, B.J.P. Gall IPHC, Strasbourg Cedex 2, France
	The production of metal ion beams by electron cyclotron resonance (ECR) ion sources using the MIVOC (Metal Ions from Volatile Compounds) method is described. The method is based on the use of metal compounds which have high vapor pressure at room temperature, e.g., C2B10H12, Fe(C5H5)2, etc. Intense ion beams of B and Fe were produced using this method at the FLNR JINR cyclotrons. Experiments on the production of cobalt, chromium, vanadium, germanium, and hafnium ion beams were performed at the test bench of ECR ion sources. Main efforts were put into production and acceleration of 50Ti ion beams at the U-400 cyclotron. The experiments on the production of Ti ion beams were performed at the test bench using natural and enriched compounds of titanium (CH3)5C5Ti(CH3)3. All these efforts allowed the production of accelerated titanium and chromium ion beams at the U-400 cyclotron.
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WEPSB002	First Experimental Demonstration of the Extraction of Low Energy Beams from the ESR to the CRYRING@ESR	extraction, ion, septum, dipole	351
	S.A. Litvinov, Z. Andelkovic, D. Beck, A. Bräuning-Demian, S. Fedotova, W. Geithner, F. Herfurth, R. Hess, C.M. Kleffner, I. Kraus, M. Lestinsky, F. Nolden, M. Steck, G. Vorobyev GSI, Darmstadt, Germany
	The CRYRING@ESR facility will provide the unique possibility for studying properties of highly charged cooled stable and short-lived ions stored at low energy for atomic and nuclear research within the FAIR project. Heavy ion beams will be stored, cooled and decelerated to energies between 10 and 4 MeV/u in the ESR and then delivered to the CRYRING@ESR. There is no dedicated kicker magnet for the fast extraction in this direction. However, a specially developed distorted closed orbit of the beam stored in the ESR in combination with the injection kicker has been suggested for the extraction and experimentally verified in 2014. In the first experiment the ion beam was extracted and transported over a distance of 20 m towards the CRYRING@ESR. In the 2016 machine development run the heavy ion beam was successfully extracted from the ESR and delivered to the first fluorescent screen inside CRYRING@ESR for the first time. Detailed ion-optical simulations as well as the experimental results will be discussed.
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WEPSB025	Application of GPGPUs and Multicore CPUs in Optimization of Some of the MpdRoot Codes	framework, GPU, distributed, detector	416
	A.I. Fatkina, O.O. Iakushkin, N.O. Tikhonov Saint Petersburg State University, Saint Petersburg, Russia
	Funding: This research was partially supported by SPbU (Saint Petersburg State University) grants 9.37.157.2014, 0.37.155.2014 and Russian Foundation for Basic Research grant (project no. 16-07-01113). We analyzed the ways to optimize MPDRoot algorithms using existing solutions from external libraries. We also examined the libraries designed to work with graphics accelerators and multi-core CPUs, such as cuRAND, cuFFT and OpenCL FFT. The paper describes the ways to expedite a portion of Kalman filter by transferring it to GPUs or multi-core CPUs using the implementation included into the MPDRoot package.
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WEPSB042	Commissioning of Electron Cooling Devices at HIRFL-CSR	electron, ion, operation, high-voltage	458
	X.D. Yang, G.H. Li, J. Li, X.M. Ma, L.J. Mao, M.T. Tang, T.L. Yan IMP/CAS, Lanzhou, People's Republic of China
	Funding: National Natural Science Foundation of China, NSFC Grant No. 11375245 Electron cooling plays an important role in the Heavy Ion Research Facility of Lanzhou cooler storage ring(HIRFL-CSR). Two electron coolers were equipped in main ring(CSRm) and experimental ring(CSRe) in HIRFL-CSR respectively. Two electron cooling devices have commissioned for twelve years since they were installed and completed in 2004. The function and operation procedure of electron cooler were presented in this report. Their performance and the highlights of experiments results were described. Their commission and optimization were summarized here. The issues and troubles during the commission were enumerated and collected in this presentation. The future upgrade and improvement were suggested, and the new operation scenario and requirement were proposed.
	Poster WEPSB042 [0.902 MB]
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WEPSB049	Temperature Control System for Thermoradiotherapy Facilities	simulation, dipole, controls, focusing	474
	S.M. Polozov, A.M. Fadeev, S.M. Ivanov MEPhI, Moscow, Russia E.A. Perelstein JINR, Dubna, Moscow Region, Russia
	It is known, hyperthermia is widely used to improve the efficiency of cancer treatment. Local hyperthermia is a method where only tumor is heated, on the other hand healthy tissues are protected from overheating. It was proposed to use an array of eight independently phased dipoles operating on 100-150 MHz to focus the RF energy in deep-situated volume of 30-50 mm size. But the problem of non-invasive temperature measurement should to be solved for correct operation of the local thermoradiotherapy systems. Conventional invasive thermometry devices as thermocouples, thermistors or Bragg optical sensors can not be widely used because of serious risk of the cancer cells transport to healthy tissues. Radiothermometry or acoustic thermometry can not be used for tissues located deeper than 5-7 cm. As known electrodynamics characteristics of tissues depend on temperature. It was proposed to use this effect for active radiothermometry in local hyperthermia. Two opposite RF dipoles can be used as generator and receiver of pick-up signal. It was shown by simulations that such method can be used for thermometry of deep-situated tissues and have high resolution. Results of simulation will present in report.
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WEPSB050	Laboratory Model of Thermoradiotherapy Facility: Experimental Results	dipole, controls, simulation, radiation	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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WEPSB051	Mathematical and Computer Methods of Data Processing in Nuclear Medicine Studies	software, detector, photon, GPU	480
	E.D. Kotina, A.V. Babin, P. V. Bazhanov, D.A. Ovsyannikov, V.A. Ploskikh, Yu. Shirokolobov Saint Petersburg State University, Saint Petersburg, Russia
	Currently nuclear medicine is a high-tech field. Its development requires solutions of problems related both to the improvement of hardware and computer processing of the information obtained in the course of study. The basic types of hardware of nuclear medicine are gamma cameras and single photon emission computed tomography (SPECT), positron emission tomography (PET) and hybrid scanners (SPECT/CT, PET/ CT). The methods of SPECT data processing include analysis of static, dynamic, tomographic and ECG-gated images. The PET data reconstruction software restores the three-dimensional distribution of the radiopharmaceutical in the body. Performance of iterative methods increases with the use of modern graphics processors. Three-dimensional imaging allows a detailed analysis of the study area. The software also implements a fusion imaging of SPECT/CT, PET/CT scans performed in the same coordinate system. An application of data flow model in medical software development is considered. Web-based imaging front-end of storage and processing system is presented.
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WEPSB052	The Use of Graphene as Stripper Foils in the Siemens Eclipse Cyclotron	cyclotron, ion, ion-source, target	483
	S. Korenev, R. Dishman, A. Martin Yebra Siemens Medical Solutions Molecular Imaging, Knoxville, TN, USA R.L. Fink, I. Pavlovsky ANI, Austin, USA N.D. Meshcheryakov, I.B. Smirnov Siemens Healthcare, Moscow, Russia
	This paper presents the results of an experimental study for the use of graphene foils as an extractor (stripper) foil in the 11-MeV Siemens Eclipse Cyclotron. The main advantage of graphene foils compared with carbon and graphite foils is its very high thermal conductivity. The graphene also has significant mechanical strength for atomically thin carbon layers. The life time of these foils is more than 18,000 mkA*H. The graphene foils showed a significant increase in the transmission factor (the ratio of the beam current on the stripper foil to the current on the target), which was approximately 90%. The technology in fabricating these graphene foils is shown. The pros and cons of using the graphene material as a stripper foil in cyclotrons are analyzed.
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WEPSB065	Development of the Beam Diagnostic System for the Radiobiological Research at the Proton Linear Accelerator I-2	proton, diagnostics, detector, radiation	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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WEPSB074	High Current Pulsing Deuteron Accelerator with Energy of 500 keV	laser, neutron, plasma, cathode	527
	A.A. Isaev, K.I. Kozlovskiy, A.E. Shikanov, E.D. Vovchenko MEPhI, Moscow, Russia
	It is reported on the development of a compact experimental model of the deuteron accelerator with energies up to 400 KeV. The ion current is about 1 kA and the current density is greater than 20 A/cm² in pulses with a duration of 0.5 mks and a repetition rate of 1 Hz. In this accelerator, we applied the effective ion source of laser-plasma and the optimized method of magnetic insulation of the electrons in the accelerating gap.
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WEPSB077	High Speed Cryogenic Monodisperse Targets for High Intensity Cyclic and Linear Accelerators	target, cryogenics, vacuum, controls	532
	A.V. Bukharov, E.V. Vishnevskii MPEI, Moscow, Russia
	The basic possibility of creation of high speed cryogenic monodisperse targets is shown. According to calculations at input of thin liquid cryogenic jets with a velocity of bigger 100 m/s in vacuum the jets don't manage to freeze at distance to 1 mm and can be broken into monodisperse drops. Drops due to evaporation are cooled and become granules. High speed cryogenic monodisperse targets have the following advantages: direct input in vacuum (there is no need for a chamber of a triple point chamber and sluices), it is possible to use the equipment of a cluster target, it is possible to receive targets with a diameter of D < 20 mkm from various cryogenic liquids (H2, D2, N2, Ar) with dispersion less than 1%, the high velocity of monodisperse granules(> 100m/s), exact synchronization of the target hitting moment in a beam with the moment of sensors turning on
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THPSC002	Use of Structural-Variational Method of R-functions in Mathematical Modeling of Magnetic Systems	vacuum, induction	538
	O.I. Zaverukha, M.V. Sidorov NURE, Kharkov, Ukraine
	Magnetic systems are widespread in nature and technic. For example, they are the component of accelerator and spectrometer facilities, stabilization systems of artificial satellites etc. Nowadays the most often used methods for numerical analysis of magnetic systems are methods of finite differences, finite elements, boundary integral elements etc. The main disadvantage of these methods is the necessity to generate and adjust the computational grid for each unique area. The R-function method, proposed by Ukrainian academic of National academy of science V.L.Rvachev, can be an alternative to existing methods for magnetic systems calculation. This method allows to build so called "solution structures" - bundle of functions that exactly meets the boundary value problems. Method treats the geometry exactly as well. The use of R-function method to calculate magnetic field in spectrometric magnet SP-40 is observed. Solution structure that takes into account the geometry of the area occupied by magnetic system, meets all boundary conditions, including matched conditions on the "ferromagnetic-vacuum" edge is build for this problem. Approximation of the indefinite component of the solution structure is proposed to calculate using Galerkin method.
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THPSC007	Modeling Magnetic Effects of Steel Rebar of Concrete Surroundings for Electrophysical Apparatus	plasma, simulation, shielding, operation	553
	V.M. Amoskov, A.M. Bazarov, V.A. Belyakov, M. Kaparkova, V.P. Kukhtin, E.A. Lamzin, B.V. Lyublin, S.E. Sytchevsky NIIEFA, St. Petersburg, Russia V.A. Belyakov, S.E. Sytchevsky Saint Petersburg State University, Saint Petersburg, Russia Y. Gribov ITER Organization, St. Paul lez Durance, France
	Large electrophysical apparatus (accelerators, detectors, tokamaks, stellarators) usually produce strong magnetic fields, which magnetizing surrounding ferromagnetics (steel masses). For example, concrete structures of buildings are reinforced with steel rebar that can produce a local substantial contribution into the magnetic field in the area where the service staff and magnetically sensitive equipment is located. The article describes an advanced approach to modelling magnetic properties of reinforced concrete structures taking into account the anisotropic effect due to rod layers orientations. The equivalent model has been validated in the computation of a test problem. For comparison, simulations have been carried out with a detailed 3D FE model that describes each of the steel rods. The equivalent model has required a few times less finite elements than the detailed model. A comparison of the fields obtained has demonstrated a very good match, even for the distances comparable with the rebar rod gaps.
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THPSC021	Corrector magnet power supplies of the European XFEL	power-supply, feedback, electron, hardware	584
	O.V. Belikov, V.R. Kozak, A.S. Medvedko, D.N. Skorobogatov, R. Vahrushev BINP SB RAS, Novosibirsk, Russia H.-J. Eckoldt, N. Heidbrook DESY, Hamburg, Germany
	In 2016 the testing of the first section of the particle accelerator for the European X-ray Free-Electron Laser (XFEL) was completed and the results were excellent. BINP take anticipation in many works of XFEL construction. One of these works is developing, production, system assembling and putting in operation the power supply system for corrector magnets. Since 2012 there were developed, produced and delivered to XFEL 7 models of power supplies with up to 10 A output current and up to 70 V output voltage. Total quantity of delivered power supplies is near 400 pieces. The report presents the structure of power supply system and results of testing.
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THPSC032	The Study of the Electrical Strength of Selected Insulators With a Different Shape of the Surface	vacuum, high-voltage, neutron, tandem-accelerator	615
	Ya.A. Kolesnikov, D.A. Kasatov, A.M. Koshkarev, A.S. Kuznetsov, A.N. Makarov, I.M. Shchudlo, I.N. Sorokin, S.Yu. Taskaev BINP SB RAS, Novosibirsk, Russia A.A. Gmyrya BINP & NSTU, Novosibirsk, Russia D.A. Kasatov, A.M. Koshkarev NSU, Novosibirsk, Russia E.O. Sokolova Budker INP & NSU, Novosibirsk, Russia
	Funding: Ministry of Science of the Russian Federation, unique identifier of applied research RFMEFI60414X0066. In the BINP SB RAS was proposed and created a source of epithermal neutrons for BNCT. The proton beam is obtained on a tandem accelerator with vacuum insulation. Sectionalized demountable feed through insulator is an integral part of the accelerator. Voltage from the high voltage source is distributed to the electrodes via resistive divider. Because of the small amount of current (hundreds of microamperes) flowing through the divider, dark currents that occur in the accelerating gaps, can significantly affect the uniform distribution of the potential along the accelerating channel, and, consequently, on the beam transportation. Therefore there is a need to change the design of the feed through insulator which will allow to set potentials at the electrodes directly from the high voltage rectifier sections. To study the feasibility of such changes has been designed and built an experimental stand, in which a single insulator with double height subjected to the same conditions as in accelerator. On the experimental stand was studied electrical strength of ceramic and polycarbonate insulators with a different shape of the surface. The paper presents the results of experimental studies of insulators. Their application will get rid of the voltage divider inside the feed through insulator and realize the scheme which allows to set potential on the electrode gaps directly from the rectifier section. This will increase the operating voltage of the accelerator and its reliability.
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THPSC046	High-Power High-Temperature Graphite Beam Dump for E-Beam Irradiation Test of Prototype IF Target in RISP	target, electron, simulation, scattering	632
	V. Gubin Institute of Laser Physics, SB RAS, Novosibirsk, Russia J.Y. Kim, J.-W. Kim, Y.H. Park IBS, Daejeon, Republic of Korea Yu. Maltseva, P.V. Martyshkin BINP SB RAS, Novosibirsk, Russia
	Nowadays project RISP is developed in IBS, Daejeon. One of the main project device is graphite target 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 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. Heavy-ion beam will be modelled by the e^- beam of ELV-6 accelerator with diameter down to ~1 mm and energy 800 keV (minimum possible). IF target is not full stopping target for an electron beam with energy 800 keV. Considerable part of beam energy will be not absorbed by a target material and must be deposited into special beam dump. In this paper the design of beam dump of the graphite cone geometry cooled by thermal irradiation is described.
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THPSC048	Measurement of Gamma Beams Profile by Cherenkov Radiation in Fibers	radiation, photon, 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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THPSC057	Application of Model Independent Techniques at VEPP-2000 and SIS100	damping, betatron, collider, electron	664
	D.V. Rabusov, Yu. A. Rogovsky BINP SB RAS, Novosibirsk, Russia
	In order to exploit an accelerator successfully all parameters should be set correctly. To check and fix errors in the accelerator lattice measurements of parameters of the betatron motion and measurements of optical functions of the accelerator lattice are used. Due to Model Independent Analysis it is possible to carry out measurements of the beta-function and the phase advance fast. Using NAFF technique lets us compute betatron tune with good precision. Limiting capabilities of the MIA at SIS100 project are discussed, the first results of the application of MIA and NAFF techniques at booster VEPP-5 and at collider VEPP-2000 are shown.
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THPSC069	Measurement of the Ion Beam Profile with the D-Pace Wire Scanner	ion, vacuum, neutron, focusing	695
	E.O. Sokolova Budker INP & NSU, Novosibirsk, Russia D.A. Kasatov, Ya.A. Kolesnikov, A.M. Koshkarev, A.S. Kuznetsov, A.N. Makarov, I.M. Shchudlo, I.N. Sorokin, S.Yu. Taskaev BINP SB RAS, Novosibirsk, Russia
	Funding: The study was supported by grants from the Russian Science Foundation (Project no. 14-32-00006) and the Budker Institute of Nuclear Physics and the Novosibirsk State University. In The Budker Institute of Nuclear Physics the accelerator-based source of epithermal neutrons was invented and now operates to be used in the boron neutron capture therapy. For several reasons the real beam flow in the facility differs from the calculated one. To take into account this distinction it is necessary to provide continuous monitoring of the beam parameters. In order to optimize the facility operation the beam should be followed not only during the formation but also while an acceleration takes place and the proton beam is thrown on the lithium target as the proton current and energy influence on the neutron output. In this way it seems to be a significant issue to measure the current, profile and also the position of the ion beam in a low-energy part of the accelerator. This work represents the results of experiments with the D-Pace WS-30 Wire Scanner Probe, which was installed in the low-energy part of the accelerator. The experiments were carried out under various conditions to vary the position and focusing control via the system of magnetic correcting elements. To correctly interpret experimental data it was necessary to take into account physical phenomena which occur during an experiment. In this way the effects which take place when the probe interacts with the beam were thoroughly considered. The obtained results allowed to restore the ion beam profile, define its size and position.
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THPSC070	Measurement of the Proton Beam Profile via an Activation Method of Diagnostics	proton, target, neutron, diagnostics	698
	E.O. Sokolova Budker INP & NSU, Novosibirsk, Russia D.A. Kasatov, Ya.A. Kolesnikov, I.M. Shchudlo, S.Yu. Taskaev BINP SB RAS, Novosibirsk, Russia
	Funding: The study was supported by grants from the Russian Science Foundation (Project no. 14-32-00006) and the Budker Institute of Nuclear Physics and the Novosibirsk State University. In The Budker Institute of Nuclear Physics the accelerator-based source of epithermal neutrons was invented and now operates to be used in the boron neutron capture therapy. Neutrons on the facility are generated during the threshold reaction 7Li(p, n)7Be which occurs when the proton beam is thrown on the lithium target. To control the neutron output it is necessary to monitor the parameters of the accelerated proton beam. The spatial distribution of the accelerated proton beam was measured exactly on the lithium target. Due to the interaction of protons and lithium there is an accumulation of a radioactive isotope of beryllium takes place. After experiments about neutrons generation it seems possible to track an area of beryllium storage and then restore the proton beam profile. The monitoring of gamma-quants with the energy of 0,477 MeV arising during the beryllium decay was carried out via the gamma-spectrometric complex. The main part of this complex is NaI-scintillation detector, which was pre-calibrated with energy. As a result of such kind of diagnostic the profile of the beam, its shape and characteristic size were determined and the results are depicted in this paper. Afterwards it could be used for an estimation of the total neutrons flux, its quantity, also to assess the target state and restore the proton beam profile.
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THPSC080	Data Processing Automatization for Gamma-Spectrometry Diagnostics of Neutron Accelerator BNCT	neutron, detector, diagnostics, software	718
	T.A. Bykov Budker INP & NSU, Novosibirsk, Russia D.A. Kasatov BINP SB RAS, Novosibirsk, Russia
	Funding: The study was supported by the grants from the Russian Science Foundation (Project No.14-32-00006), Budker Nuclear Institute and Novosibirsk State University. There is the accelerator-tandem at the Nuclear physics institute in Novosibirsk which is suitable for malignancies treatment such as glioblastoma and melanoma using BNCT methods. There are different gamma spectrometry diagnostics which apply under this project. One of these is used to determine the parameters of the neutron beam. The method is to irradiate a set of activation foils with neutrons. Then measure the gamma-spectrum of foils using gamma detector. Based on these data it can be calculated the activity of foil, as well as the amount and the energy of neutrons. For data processing of these diagnostics there was developed a software which is used for convenient display of gamma-spectrometer data and the activity of the foil. Software allows setting a canal calibration and the sensitivity calibration which is needed to calculate the foil activity.
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THPSC086	Development and Implementation of the Automation System of the Ion Source for BNCT	controls, PLC, ion, ion-source	733
	A.M. Koshkarev, A.S. Kuznetsov, A.L. Sanin, V.Ya. Savkin, S.Yu. Taskaev, P.V. Zubarev BINP SB RAS, Novosibirsk, Russia
	Funding: Ministry of Science of the Russian Federation, unique identifier of applied research RFMEFI60414X0066. The new source of epithermal neutrons, designed for boron neutron capture therapy (BNCT)* of cancer in oncology clinic, was proposed and developed in Budker Institute of Nuclear Physics. This method of treatment is effective against several currently incurable radioresistant tumors, such as brain glioblastoma and melanoma metastases. The neutron source includes a new type of accelerator: accelerator-tandem with vacuum insulation, lithium neutron generating target and neutron beam shaping assembly. Current accelerator produces a stationary 5 mA proton beam with 2 MeV energy, but this is not sufficient for therapy on humans. For conducting the experiment on humans it is necessary to create a new power rack for the ion source. The report summarizes results of the development and implementation of new power rack, with remote control and data collection systems, to reach 15 mA beam current. This system will increase the proton beam current and, as a result, the neutron yield, that is needed to heal people. * S. Taskaev. Accelerator based epithermal neutron source. Physics of Particles and Nuclei, 2015, Vol. 46, No. 6, pp. 956'990. ** Neutron Capture Therapy. Principles and Applications. Eds: W. Sauerwein, A. Wittig, R. Moss, Y. Nakagawa. Springer, 2012.
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Paper

Title

Other Keywords

Page

WECAMH03

Analysis of the Particle Dynamics Stability in the Penning-Malmberg-Surko Trap

dipole, cyclotron, scattering, plasma

64

I.N. Meshkov
JINR, Dubna, Moscow Region, Russia
M.K. Eseev
NAFU, Arkhangelsk, Russia
I.N. Meshkov, A.D. Ovsyannikov, D.A. Ovsyannikov, V.A. Ponomarev
Saint Petersburg State University, Saint Petersburg, Russia

Present report refers to the problem of the study of charged particle dynamics in the Penning-Malmberg-Surko trap. Various models of particle dynamics describing the magnetron and cyclotron motions are considered. Representation of the solutions in the form of a series is used for the magnetron motion. The problems of the stability of the magnetron motion are investigated.

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WECAMH04

Recent Experiments With High Energy Electron Cooler in COSY

electron, proton, target, storage-ring

67

V.B. Reva, M.I. Bryzgunov, V.V. Parkhomchuk, D.N. Skorobogatov
BINP SB RAS, Novosibirsk, Russia
V. Kamerdzhiev
FZJ, Jülich, Germany
I.N. Meshkov
JINR, Dubna, Moscow Region, Russia

The 2 MeV electron cooling system at COSY-Jülich started operation in 2013. The cooling process was observed in the wide energy range of the electron beam from 100 keV to 1.26 MeV. Vertical, horizontal and longitudinal cooling was obtained with bunched and coasting proton beam. This report deals with electron cooling experiments at COSY with proton beam at energy 1.66 and 2.3 GeV. The proton beam was cooled at different regimes: RF on and off, barrier bucket RF, and cluster target on and off.

Slides WECAMH04 [11.045 MB]

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WEYMH01

Development of MHF Conception at ITEP

proton, ion, linac, extraction

73

N.N. Alexeev, A. Andreev, A. Kolomiets, V.I. Nikolaev, Yu.A. Satov, A. Shumshurov, V. Stolbunov, A. Zarubin
ITEP, Moscow, Russia

The conception of Multi-purpose Hadrons Facility (MHF) began to be discussed at ITEP in the late ~2010s when ITEP-TWAC facility was intensively exploited for physical and applied research with the use of accelerated proton and ion beams varied in a wide range of operating parameters. Technological developments have continued to expand the scope of beams utilizing in diverse fields of science, medicine, industry and education. The ITEP-TWAC facility was decommissioned in 2012 and continues to remain in a state of waiting for reasonable decision on its recovery and upgrade, but conception of MHF is alive and aims at creating a technological base of particle accelerator technique intended for generation of proton and ion beams, covering the needs of many areas of fundamental, applied and technological research and industrial applications, represents a significant scientific and practical interest for modern and future engineering community. Created MHF environment should obviously be friendly and flexible for collaboration with industry, universities, and other national and foreign labs to provide continuous intelligent and technological progress. The key components of the MHF mission and vision are presented.

Slides WEYMH01 [5.810 MB]

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WEZMH01

Spallation Neutron Source at the 1 Gev Synchrocyclotron of PNPI

neutron, proton, target, resonance

90

O.A. Shcherbakov, E.M. Ivanov, G.F. Mikheev, G.A. Petrov, G.A. Riabov, A.S. Vorobyev
PNPI, Gatchina, Leningrad District, Russia

A description of the spallation pulsed neutron source and neutron time-of-flight spectrometer GNEIS based on the 1 GeV proton synchrocyclotron of PNPI in Gatchina is presented. The main parameters of the neutron source and GNEIS are given in comparison with the analogous world-class facilities. The experimental capabilities of the GNEIS are demonstrated by the examples of some nuclear physics and applied research experiments carried out during four decades of its operation.

Slides WEZMH01 [32.810 MB]

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FRCAMH01

Status of the Nuclotron

booster, operation, controls, TANGO

150

A.O. Sidorin, N.N. Agapov, A.V. Alfeev, V. Andreev, V. Batin, O.I. Brovko, V.V. Bugaev, A.V. Butenko, D.E. Donets, A.V. Eliseev, V.V. Fimushkin, E.V. Gorbachev, A. Govorov, A.Yu. Grebentsov, E.V. Ivanov, V. Karpinsky, H.G. Khodzhibagiyan, A. Kirichenko, V. Kobets, A.D. Kovalenko, O.S. Kozlov, K.A. Levterov, V.A. Mikhailov, V.A. Monchinsky, A. Nesterov, Yu.M. Nozhenko, A.L. Osipenkov, S. Romanov, P.A. Rukojatkin, A.A. Shurygin, I. Slepnev, V. Slepnev, A.V. Smirnov, E. Syresin, G.V. Trubnikov, A. Tuzikov, B. Vasilishin, V. Volkov
JINR, Dubna, Moscow Region, Russia
A. Belov
RAS/INR, Moscow, Russia
I.V. Gorelyshev, A.V. Philippov
JINR/VBLHEP, Dubna, Moscow region, Russia
A.O. Sidorin
St. Petersburg University, St. Petersburg, Russia

Since last RuPAC two runs of the Nuclotron operation were performed: in January - March of 2015 and June 2016. Presently we are providing the run, which has been started at the end of October and will be continued up to the end of December. The facility development is aimed to the performance increase for current physical program realization and preparation to the NICA Booster construction and Baryonic Matter at Nuclotron experiment.

Slides FRCAMH01 [20.777 MB]

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TUPSA046

Experimental Analysis of Dipole Modes in Elliptical Cavity

cavity, simulation, impedance, dipole

313

Ya.V. Shashkov, M.V. Lalayan, N.P. Sobenin
MEPhI, Moscow, Russia
A. Orlov
NRNU, Moscow, Russia

The experimental measurements of transverse shunt impedance for higher order modes TM110 and TE111 for S-band elliptical cavity were carried out. The experiments using dielectric and metallic spheres as perturbing objects and with ring probe were done.

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TUPSA059

Production of Intense Metal Ion Beams From ECR Ion Sources Using the MIVOC Method

ion, cyclotron, ion-source, ECR

330

A.E. Bondarchenko, S.L. Bogomolov, K.I. Kuzmenkov, V.Ya. Lebedev, V.N. Loginov
JINR, Dubna, Moscow Region, Russia
Z. Asfari, B.J.P. Gall
IPHC, Strasbourg Cedex 2, France

The production of metal ion beams by electron cyclotron resonance (ECR) ion sources using the MIVOC (Metal Ions from Volatile Compounds) method is described. The method is based on the use of metal compounds which have high vapor pressure at room temperature, e.g., C2B10H12, Fe(C5H5)2, etc. Intense ion beams of B and Fe were produced using this method at the FLNR JINR cyclotrons. Experiments on the production of cobalt, chromium, vanadium, germanium, and hafnium ion beams were performed at the test bench of ECR ion sources. Main efforts were put into production and acceleration of 50Ti ion beams at the U-400 cyclotron. The experiments on the production of Ti ion beams were performed at the test bench using natural and enriched compounds of titanium (CH3)5C5Ti(CH3)3. All these efforts allowed the production of accelerated titanium and chromium ion beams at the U-400 cyclotron.

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WEPSB002

First Experimental Demonstration of the Extraction of Low Energy Beams from the ESR to the CRYRING@ESR

extraction, ion, septum, dipole

351

S.A. Litvinov, Z. Andelkovic, D. Beck, A. Bräuning-Demian, S. Fedotova, W. Geithner, F. Herfurth, R. Hess, C.M. Kleffner, I. Kraus, M. Lestinsky, F. Nolden, M. Steck, G. Vorobyev
GSI, Darmstadt, Germany

The CRYRING@ESR facility will provide the unique possibility for studying properties of highly charged cooled stable and short-lived ions stored at low energy for atomic and nuclear research within the FAIR project. Heavy ion beams will be stored, cooled and decelerated to energies between 10 and 4 MeV/u in the ESR and then delivered to the CRYRING@ESR. There is no dedicated kicker magnet for the fast extraction in this direction. However, a specially developed distorted closed orbit of the beam stored in the ESR in combination with the injection kicker has been suggested for the extraction and experimentally verified in 2014. In the first experiment the ion beam was extracted and transported over a distance of 20 m towards the CRYRING@ESR. In the 2016 machine development run the heavy ion beam was successfully extracted from the ESR and delivered to the first fluorescent screen inside CRYRING@ESR for the first time. Detailed ion-optical simulations as well as the experimental results will be discussed.

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WEPSB025

Application of GPGPUs and Multicore CPUs in Optimization of Some of the MpdRoot Codes

framework, GPU, distributed, detector

416

A.I. Fatkina, O.O. Iakushkin, N.O. Tikhonov
Saint Petersburg State University, Saint Petersburg, Russia

Funding: This research was partially supported by SPbU (Saint Petersburg State University) grants 9.37.157.2014, 0.37.155.2014 and Russian Foundation for Basic Research grant (project no. 16-07-01113).
We analyzed the ways to optimize MPDRoot algorithms using existing solutions from external libraries. We also examined the libraries designed to work with graphics accelerators and multi-core CPUs, such as cuRAND, cuFFT and OpenCL FFT. The paper describes the ways to expedite a portion of Kalman filter by transferring it to GPUs or multi-core CPUs using the implementation included into the MPDRoot package.

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WEPSB042

Commissioning of Electron Cooling Devices at HIRFL-CSR

electron, ion, operation, high-voltage

458

X.D. Yang, G.H. Li, J. Li, X.M. Ma, L.J. Mao, M.T. Tang, T.L. Yan
IMP/CAS, Lanzhou, People's Republic of China

Funding: National Natural Science Foundation of China, NSFC Grant No. 11375245
Electron cooling plays an important role in the Heavy Ion Research Facility of Lanzhou cooler storage ring(HIRFL-CSR). Two electron coolers were equipped in main ring(CSRm) and experimental ring(CSRe) in HIRFL-CSR respectively. Two electron cooling devices have commissioned for twelve years since they were installed and completed in 2004. The function and operation procedure of electron cooler were presented in this report. Their performance and the highlights of experiments results were described. Their commission and optimization were summarized here. The issues and troubles during the commission were enumerated and collected in this presentation. The future upgrade and improvement were suggested, and the new operation scenario and requirement were proposed.

Poster WEPSB042 [0.902 MB]

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WEPSB049

Temperature Control System for Thermoradiotherapy Facilities

simulation, dipole, controls, focusing

474

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

It is known, hyperthermia is widely used to improve the efficiency of cancer treatment. Local hyperthermia is a method where only tumor is heated, on the other hand healthy tissues are protected from overheating. It was proposed to use an array of eight independently phased dipoles operating on 100-150 MHz to focus the RF energy in deep-situated volume of 30-50 mm size. But the problem of non-invasive temperature measurement should to be solved for correct operation of the local thermoradiotherapy systems. Conventional invasive thermometry devices as thermocouples, thermistors or Bragg optical sensors can not be widely used because of serious risk of the cancer cells transport to healthy tissues. Radiothermometry or acoustic thermometry can not be used for tissues located deeper than 5-7 cm. As known electrodynamics characteristics of tissues depend on temperature. It was proposed to use this effect for active radiothermometry in local hyperthermia. Two opposite RF dipoles can be used as generator and receiver of pick-up signal. It was shown by simulations that such method can be used for thermometry of deep-situated tissues and have high resolution. Results of simulation will present in report.

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WEPSB050

Laboratory Model of Thermoradiotherapy Facility: Experimental Results

dipole, controls, simulation, radiation

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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WEPSB051

Mathematical and Computer Methods of Data Processing in Nuclear Medicine Studies

software, detector, photon, GPU

480

E.D. Kotina, A.V. Babin, P. V. Bazhanov, D.A. Ovsyannikov, V.A. Ploskikh, Yu. Shirokolobov
Saint Petersburg State University, Saint Petersburg, Russia

Currently nuclear medicine is a high-tech field. Its development requires solutions of problems related both to the improvement of hardware and computer processing of the information obtained in the course of study. The basic types of hardware of nuclear medicine are gamma cameras and single photon emission computed tomography (SPECT), positron emission tomography (PET) and hybrid scanners (SPECT/CT, PET/ CT). The methods of SPECT data processing include analysis of static, dynamic, tomographic and ECG-gated images. The PET data reconstruction software restores the three-dimensional distribution of the radiopharmaceutical in the body. Performance of iterative methods increases with the use of modern graphics processors. Three-dimensional imaging allows a detailed analysis of the study area. The software also implements a fusion imaging of SPECT/CT, PET/CT scans performed in the same coordinate system. An application of data flow model in medical software development is considered. Web-based imaging front-end of storage and processing system is presented.

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WEPSB052

The Use of Graphene as Stripper Foils in the Siemens Eclipse Cyclotron

cyclotron, ion, ion-source, target

483

S. Korenev, R. Dishman, A. Martin Yebra
Siemens Medical Solutions Molecular Imaging, Knoxville, TN, USA
R.L. Fink, I. Pavlovsky
ANI, Austin, USA
N.D. Meshcheryakov, I.B. Smirnov
Siemens Healthcare, Moscow, Russia

This paper presents the results of an experimental study for the use of graphene foils as an extractor (stripper) foil in the 11-MeV Siemens Eclipse Cyclotron. The main advantage of graphene foils compared with carbon and graphite foils is its very high thermal conductivity. The graphene also has significant mechanical strength for atomically thin carbon layers. The life time of these foils is more than 18,000 mkA*H. The graphene foils showed a significant increase in the transmission factor (the ratio of the beam current on the stripper foil to the current on the target), which was approximately 90%. The technology in fabricating these graphene foils is shown. The pros and cons of using the graphene material as a stripper foil in cyclotrons are analyzed.

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WEPSB065

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

proton, diagnostics, detector, radiation

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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WEPSB074

High Current Pulsing Deuteron Accelerator with Energy of 500 keV

laser, neutron, plasma, cathode

527

A.A. Isaev, K.I. Kozlovskiy, A.E. Shikanov, E.D. Vovchenko
MEPhI, Moscow, Russia

It is reported on the development of a compact experimental model of the deuteron accelerator with energies up to 400 KeV. The ion current is about 1 kA and the current density is greater than 20 A/cm² in pulses with a duration of 0.5 mks and a repetition rate of 1 Hz. In this accelerator, we applied the effective ion source of laser-plasma and the optimized method of magnetic insulation of the electrons in the accelerating gap.

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WEPSB077

High Speed Cryogenic Monodisperse Targets for High Intensity Cyclic and Linear Accelerators

target, cryogenics, vacuum, controls

532

A.V. Bukharov, E.V. Vishnevskii
MPEI, Moscow, Russia

The basic possibility of creation of high speed cryogenic monodisperse targets is shown. According to calculations at input of thin liquid cryogenic jets with a velocity of bigger 100 m/s in vacuum the jets don't manage to freeze at distance to 1 mm and can be broken into monodisperse drops. Drops due to evaporation are cooled and become granules. High speed cryogenic monodisperse targets have the following advantages: direct input in vacuum (there is no need for a chamber of a triple point chamber and sluices), it is possible to use the equipment of a cluster target, it is possible to receive targets with a diameter of D < 20 mkm from various cryogenic liquids (H2, D2, N2, Ar) with dispersion less than 1%, the high velocity of monodisperse granules(> 100m/s), exact synchronization of the target hitting moment in a beam with the moment of sensors turning on

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THPSC002

Use of Structural-Variational Method of R-functions in Mathematical Modeling of Magnetic Systems

vacuum, induction

538

O.I. Zaverukha, M.V. Sidorov
NURE, Kharkov, Ukraine

Magnetic systems are widespread in nature and technic. For example, they are the component of accelerator and spectrometer facilities, stabilization systems of artificial satellites etc. Nowadays the most often used methods for numerical analysis of magnetic systems are methods of finite differences, finite elements, boundary integral elements etc. The main disadvantage of these methods is the necessity to generate and adjust the computational grid for each unique area. The R-function method, proposed by Ukrainian academic of National academy of science V.L.Rvachev, can be an alternative to existing methods for magnetic systems calculation. This method allows to build so called "solution structures" - bundle of functions that exactly meets the boundary value problems. Method treats the geometry exactly as well. The use of R-function method to calculate magnetic field in spectrometric magnet SP-40 is observed. Solution structure that takes into account the geometry of the area occupied by magnetic system, meets all boundary conditions, including matched conditions on the "ferromagnetic-vacuum" edge is build for this problem. Approximation of the indefinite component of the solution structure is proposed to calculate using Galerkin method.

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THPSC007

Modeling Magnetic Effects of Steel Rebar of Concrete Surroundings for Electrophysical Apparatus

plasma, simulation, shielding, operation

553

V.M. Amoskov, A.M. Bazarov, V.A. Belyakov, M. Kaparkova, V.P. Kukhtin, E.A. Lamzin, B.V. Lyublin, S.E. Sytchevsky
NIIEFA, St. Petersburg, Russia
V.A. Belyakov, S.E. Sytchevsky
Saint Petersburg State University, Saint Petersburg, Russia
Y. Gribov
ITER Organization, St. Paul lez Durance, France

Large electrophysical apparatus (accelerators, detectors, tokamaks, stellarators) usually produce strong magnetic fields, which magnetizing surrounding ferromagnetics (steel masses). For example, concrete structures of buildings are reinforced with steel rebar that can produce a local substantial contribution into the magnetic field in the area where the service staff and magnetically sensitive equipment is located. The article describes an advanced approach to modelling magnetic properties of reinforced concrete structures taking into account the anisotropic effect due to rod layers orientations. The equivalent model has been validated in the computation of a test problem. For comparison, simulations have been carried out with a detailed 3D FE model that describes each of the steel rods. The equivalent model has required a few times less finite elements than the detailed model. A comparison of the fields obtained has demonstrated a very good match, even for the distances comparable with the rebar rod gaps.

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THPSC021

Corrector magnet power supplies of the European XFEL

power-supply, feedback, electron, hardware

584

O.V. Belikov, V.R. Kozak, A.S. Medvedko, D.N. Skorobogatov, R. Vahrushev
BINP SB RAS, Novosibirsk, Russia
H.-J. Eckoldt, N. Heidbrook
DESY, Hamburg, Germany

In 2016 the testing of the first section of the particle accelerator for the European X-ray Free-Electron Laser (XFEL) was completed and the results were excellent. BINP take anticipation in many works of XFEL construction. One of these works is developing, production, system assembling and putting in operation the power supply system for corrector magnets. Since 2012 there were developed, produced and delivered to XFEL 7 models of power supplies with up to 10 A output current and up to 70 V output voltage. Total quantity of delivered power supplies is near 400 pieces. The report presents the structure of power supply system and results of testing.

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THPSC032

The Study of the Electrical Strength of Selected Insulators With a Different Shape of the Surface

vacuum, high-voltage, neutron, tandem-accelerator

615

Ya.A. Kolesnikov, D.A. Kasatov, A.M. Koshkarev, A.S. Kuznetsov, A.N. Makarov, I.M. Shchudlo, I.N. Sorokin, S.Yu. Taskaev
BINP SB RAS, Novosibirsk, Russia
A.A. Gmyrya
BINP & NSTU, Novosibirsk, Russia
D.A. Kasatov, A.M. Koshkarev
NSU, Novosibirsk, Russia
E.O. Sokolova
Budker INP & NSU, Novosibirsk, Russia

Funding: Ministry of Science of the Russian Federation, unique identifier of applied research RFMEFI60414X0066.
In the BINP SB RAS was proposed and created a source of epithermal neutrons for BNCT. The proton beam is obtained on a tandem accelerator with vacuum insulation. Sectionalized demountable feed through insulator is an integral part of the accelerator. Voltage from the high voltage source is distributed to the electrodes via resistive divider. Because of the small amount of current (hundreds of microamperes) flowing through the divider, dark currents that occur in the accelerating gaps, can significantly affect the uniform distribution of the potential along the accelerating channel, and, consequently, on the beam transportation. Therefore there is a need to change the design of the feed through insulator which will allow to set potentials at the electrodes directly from the high voltage rectifier sections. To study the feasibility of such changes has been designed and built an experimental stand, in which a single insulator with double height subjected to the same conditions as in accelerator. On the experimental stand was studied electrical strength of ceramic and polycarbonate insulators with a different shape of the surface. The paper presents the results of experimental studies of insulators. Their application will get rid of the voltage divider inside the feed through insulator and realize the scheme which allows to set potential on the electrode gaps directly from the rectifier section. This will increase the operating voltage of the accelerator and its reliability.

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THPSC046

High-Power High-Temperature Graphite Beam Dump for E-Beam Irradiation Test of Prototype IF Target in RISP

target, electron, simulation, scattering

632

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

Nowadays project RISP is developed in IBS, Daejeon. One of the main project device is graphite target 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 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. Heavy-ion beam will be modelled by the e^- beam of ELV-6 accelerator with diameter down to ~1 mm and energy 800 keV (minimum possible). IF target is not full stopping target for an electron beam with energy 800 keV. Considerable part of beam energy will be not absorbed by a target material and must be deposited into special beam dump. In this paper the design of beam dump of the graphite cone geometry cooled by thermal irradiation is described.

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THPSC048

Measurement of Gamma Beams Profile by Cherenkov Radiation in Fibers

radiation, photon, 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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THPSC057

Application of Model Independent Techniques at VEPP-2000 and SIS100

damping, betatron, collider, electron

664

D.V. Rabusov, Yu. A. Rogovsky
BINP SB RAS, Novosibirsk, Russia

In order to exploit an accelerator successfully all parameters should be set correctly. To check and fix errors in the accelerator lattice measurements of parameters of the betatron motion and measurements of optical functions of the accelerator lattice are used. Due to Model Independent Analysis it is possible to carry out measurements of the beta-function and the phase advance fast. Using NAFF technique lets us compute betatron tune with good precision. Limiting capabilities of the MIA at SIS100 project are discussed, the first results of the application of MIA and NAFF techniques at booster VEPP-5 and at collider VEPP-2000 are shown.

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THPSC069

Measurement of the Ion Beam Profile with the D-Pace Wire Scanner

ion, vacuum, neutron, focusing

695

E.O. Sokolova
Budker INP & NSU, Novosibirsk, Russia
D.A. Kasatov, Ya.A. Kolesnikov, A.M. Koshkarev, A.S. Kuznetsov, A.N. Makarov, I.M. Shchudlo, I.N. Sorokin, S.Yu. Taskaev
BINP SB RAS, Novosibirsk, Russia

Funding: The study was supported by grants from the Russian Science Foundation (Project no. 14-32-00006) and the Budker Institute of Nuclear Physics and the Novosibirsk State University.
In The Budker Institute of Nuclear Physics the accelerator-based source of epithermal neutrons was invented and now operates to be used in the boron neutron capture therapy. For several reasons the real beam flow in the facility differs from the calculated one. To take into account this distinction it is necessary to provide continuous monitoring of the beam parameters. In order to optimize the facility operation the beam should be followed not only during the formation but also while an acceleration takes place and the proton beam is thrown on the lithium target as the proton current and energy influence on the neutron output. In this way it seems to be a significant issue to measure the current, profile and also the position of the ion beam in a low-energy part of the accelerator. This work represents the results of experiments with the D-Pace WS-30 Wire Scanner Probe, which was installed in the low-energy part of the accelerator. The experiments were carried out under various conditions to vary the position and focusing control via the system of magnetic correcting elements. To correctly interpret experimental data it was necessary to take into account physical phenomena which occur during an experiment. In this way the effects which take place when the probe interacts with the beam were thoroughly considered. The obtained results allowed to restore the ion beam profile, define its size and position.

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THPSC070

Measurement of the Proton Beam Profile via an Activation Method of Diagnostics

proton, target, neutron, diagnostics

698

E.O. Sokolova
Budker INP & NSU, Novosibirsk, Russia
D.A. Kasatov, Ya.A. Kolesnikov, I.M. Shchudlo, S.Yu. Taskaev
BINP SB RAS, Novosibirsk, Russia

Funding: The study was supported by grants from the Russian Science Foundation (Project no. 14-32-00006) and the Budker Institute of Nuclear Physics and the Novosibirsk State University.
In The Budker Institute of Nuclear Physics the accelerator-based source of epithermal neutrons was invented and now operates to be used in the boron neutron capture therapy. Neutrons on the facility are generated during the threshold reaction 7Li(p, n)7Be which occurs when the proton beam is thrown on the lithium target. To control the neutron output it is necessary to monitor the parameters of the accelerated proton beam. The spatial distribution of the accelerated proton beam was measured exactly on the lithium target. Due to the interaction of protons and lithium there is an accumulation of a radioactive isotope of beryllium takes place. After experiments about neutrons generation it seems possible to track an area of beryllium storage and then restore the proton beam profile. The monitoring of gamma-quants with the energy of 0,477 MeV arising during the beryllium decay was carried out via the gamma-spectrometric complex. The main part of this complex is NaI-scintillation detector, which was pre-calibrated with energy. As a result of such kind of diagnostic the profile of the beam, its shape and characteristic size were determined and the results are depicted in this paper. Afterwards it could be used for an estimation of the total neutrons flux, its quantity, also to assess the target state and restore the proton beam profile.

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THPSC080

Data Processing Automatization for Gamma-Spectrometry Diagnostics of Neutron Accelerator BNCT

neutron, detector, diagnostics, software

718

T.A. Bykov
Budker INP & NSU, Novosibirsk, Russia
D.A. Kasatov
BINP SB RAS, Novosibirsk, Russia

Funding: The study was supported by the grants from the Russian Science Foundation (Project No.14-32-00006), Budker Nuclear Institute and Novosibirsk State University.
There is the accelerator-tandem at the Nuclear physics institute in Novosibirsk which is suitable for malignancies treatment such as glioblastoma and melanoma using BNCT methods. There are different gamma spectrometry diagnostics which apply under this project. One of these is used to determine the parameters of the neutron beam. The method is to irradiate a set of activation foils with neutrons. Then measure the gamma-spectrum of foils using gamma detector. Based on these data it can be calculated the activity of foil, as well as the amount and the energy of neutrons. For data processing of these diagnostics there was developed a software which is used for convenient display of gamma-spectrometer data and the activity of the foil. Software allows setting a canal calibration and the sensitivity calibration which is needed to calculate the foil activity.

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THPSC086

Development and Implementation of the Automation System of the Ion Source for BNCT

controls, PLC, ion, ion-source

733

A.M. Koshkarev, A.S. Kuznetsov, A.L. Sanin, V.Ya. Savkin, S.Yu. Taskaev, P.V. Zubarev
BINP SB RAS, Novosibirsk, Russia

Funding: Ministry of Science of the Russian Federation, unique identifier of applied research RFMEFI60414X0066.
The new source of epithermal neutrons*, designed for boron neutron capture therapy (BNCT)** of cancer in oncology clinic, was proposed and developed in Budker Institute of Nuclear Physics. This method of treatment is effective against several currently incurable radioresistant tumors, such as brain glioblastoma and melanoma metastases. The neutron source includes a new type of accelerator: accelerator-tandem with vacuum insulation, lithium neutron generating target and neutron beam shaping assembly. Current accelerator produces a stationary 5 mA proton beam with 2 MeV energy, but this is not sufficient for therapy on humans. For conducting the experiment on humans it is necessary to create a new power rack for the ion source. The report summarizes results of the development and implementation of new power rack, with remote control and data collection systems, to reach 15 mA beam current. This system will increase the proton beam current and, as a result, the neutron yield, that is needed to heal people.
* S. Taskaev. Accelerator based epithermal neutron source. Physics of Particles and Nuclei, 2015, Vol. 46, No. 6, pp. 956'990.
** Neutron Capture Therapy. Principles and Applications. Eds: W. Sauerwein, A. Wittig, R. Moss, Y. Nakagawa. Springer, 2012.

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