RuPAC2021 - List of Keywords (synchrotron)

Paper	Title	Other Keywords	Page
MOPSA07	200 MeV Linear Electron Accelerator - Pre-Injector for a New Kurchatov Synchrotron Radiation Source	simulation, injection, linac, ion-source	145
	I.A. Ashanin, S.M. Polozov, A.I. Pronikov, V.I. Rashchikov MEPhI, Moscow, Russia I.A. Ashanin, V. Korchuganov, S.M. Polozov, A.I. Pronikov, V.I. Rashchikov, V.A. Ushakov NRC, Moscow, Russia
	New linear electron accelerator (linac) with an energy of about 200 MeV (or 300 MeV in a high-energy version) is being proposed for injection into the booster synchrotron, which is being developed for the reconstruction of the SIBERIA-2 accelerator complex with the aim of upgrade to 3rd generation source at the NRC «Kurchatov Institute». A modernized linac and its specific elements layout will described in the report. The modeling of accelerating structure and optimization of electrodynamics characteristics and fields distribution and geometric in order to reduce the beam spectrum at the output of the linac was done. A step-by-step front-to-end beam dynamics simulation results will discuss.
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-MOPSA07
About •	Received ※ 29 September 2021 — Revised ※ 30 September 2021 — Accepted ※ 07 October 2021 — Issued ※ 12 October 2021
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MOPSA15	Thermodynamic Characteristics of the Superconducting Quadrupole Magnets of the NICA Booster Synchrotron	quadrupole, booster, experiment, radiation	162
	A.A. Bortsova JINR/VBLHEP, Dubna, Moscow region, Russia H.G. Khodzhibagiyan, D. Nikiforov JINR, Dubna, Moscow Region, Russia
	The Booster synchrotron of the NICA accelerator complex in Dubna is designed for acceleration of heavy ions before injection into the Nuclotron. The first run of the Booster synchrotron was carried out in the end of 2020. This work presents calculated and experimental data of static heat leak and dynamic heat releases for quadrupole magnets of the Booster synchrotron with different configuration of the corrector magnets. Obtained results will be taken into account for development of new superconducting magnets and cryogenic installations.
	Poster MOPSA15 [3.928 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-MOPSA15
About •	Received ※ 25 September 2021 — Revised ※ 26 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 19 October 2021
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MOPSA17	Automated System for Heating High-Vacuum Elements of Superconducting Synchrotrons of the NICA Complex	controls, vacuum, booster, collider	168
	A.S. Sergeev, A.N. Svidetelev JINR, Dubna, Moscow Region, Russia A.V. Butenko JINR/VBLHEP, Dubna, Moscow region, Russia
	To obtain an ultrahigh vacuum, it is necessary to preliminarily degass the "warm" sections of the vacuum system of accelerators by prolonged heating to remove water vapor and molecules of other substances adsorbed on the inner surface of the walls of the vacuum chamber. The presented system allows you to heat products with a known unknown heat capacity and thermal conductivity. Some of the accelerators of the NICA complex are supplied without their own heating system and heating is carried out by specialists directly at the accelerator site.
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-MOPSA17
About •	Received ※ 29 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 11 October 2021
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MOPSA23	Machine Learning for the Storage Ring Optimization	ion-source, radiation, synchrotron-radiation, emittance	169
	Ye. Fomin NRC, Moscow, Russia
	Funding: The reported study was funded by RFBR, project number 19-29-12039 The design and optimization of new lattice for modern synchrotron radiation sources are for the most part an art and highly dependent on the researcher skills. Since both modern existing and designing storage rings is very complex nonlinear system the researchers spend a lot of effort to solve their problems. In this work the use of machine learning technics to improve the efficiency of solving nonlinear systems optimization problems is considered.
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-MOPSA23
About •	Received ※ 06 October 2021 — Accepted ※ 09 October 2021 — Issued ※ 16 October 2021
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MOPSA39	Application of a Scintillation Detector for Periodic Monitoring of Beam Parameters at Medical Proton Therapy Complex "Prometheus"	proton, detector, radiation, extraction	176
	A.E. Shemyakov, Belikhin, M.A. Belikhin, A.A. Pryanichnikov, A.I. Shestopalov PhTC LPI RAS, Protein, Moscow region, Russia Belikhin, M.A. Belikhin, A.A. Pryanichnikov MSU, Moscow, Russia
	Introduction: In November 2015 the first domestic complex of proton therapy "Prometheus" start to treat oncology patients. This complex uses a modern technique for irradiation of tumors by scanning with a pencil beam. This technique requires continuous monitoring and regular verification of main beam parameters such as range in water, focusing and lateral dimension. To control these parameters, we developed a waterproof detector for measurements in air and in a water phantom. Methods and materials: The detector system consists of a luminescent screen 5 cm in diameter, a mirror and a CCD camera. When the beam goes through the screen, a glow appears, the reflected image of which is perceived by the camera and analyzed. This design is waterproof, which makes it possible to perform measurements in water. To measure the range of protons in water, this detector was fixed on a special positioner, which allows to move the sensor with an accuracy of 0.2 mm. We measured the beams also in comparison with EBT3 dosimetric film for energies from 60 to 250 MeV with a step of 10 MeV. Same measurements of the ranges were carried out using a standard PTW Bragg Peak ionization chamber. Results: It was shown that this system is a simple and inexpensive tool for conducting regular quality assurance of beam parameters. Unlike the EBT3 dosimetric film, this detector gives an immediate response, which makes it possible to use it when debugging the accelerator and adjusting the beam.
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-MOPSA39
About •	Received ※ 17 September 2021 — Revised ※ 29 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 19 October 2021
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MOPSA46	Preliminary Design Study of the Gantry for the Proton Radiotherapy Center NRC "Kurchatov Institute"	dipole, proton, vacuum, quadrupole	196
	A.N. Chernykh, M.S. Bulatov, V.S. Khoroshkov, G.I. Klenov NRC, Moscow, Russia
	A typical proton radiation therapy center, which includes a synchrotron with a power of 250 V, a gantry unit with a 360° rotation angle, and a unit with a fixed channel has been developed at NRC "Kurchatov Institute". In report, a diagram of a magneto-optical channel of a gantry beam installation and a project of a beamline of a gantry beam installation with magnetic elements will be presented. In addition, a frame for accommodation of the magnetic elements of the considered project of the gantry beamline will be presented.
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-MOPSA46
About •	Received ※ 28 September 2021 — Revised ※ 29 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 16 October 2021
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MOPSA54	Calculation of Dose Fields and Energy Spectra of Secondary Radiation in the Extraction Zone of a Synchrotron Accelerator for Protons With Energies Up to 700 MeV	proton, radiation, simulation, experiment	222
	R.P. Truntseva, N.N. Kurapov, A.M. Opekunov RFNC-VNIIEF, Sarov, Nizhniy Novgorod region, Russia A.V. Telnov, N.V. Zavyalov VNIIEF, Sarov, Russia
	The possibility of using a multipurpose synchrotron accelerator for researching the processes of heavy charged particles interaction with various materials is considered. The accelerator provides proton energies up to 700 MeV. It is necessary to evaluate the emerging dose fields at the design stage of the experimental room. In this case, it is important to evaluate the dose distribution, energies and types of secondary radiation that may enter the adjacent rooms. This paper presents the results of the radiation environment evaluation in the radiation extraction zone of the synchrotron accelerator. Simulation results of secondary radiation energy spectra near the walls, which separate the irradiation zone from adjacent rooms, are presented. Proton energies are equal to 60, 85, 110 and 700 MeV are considered. Simulation was performed by the Monte Carlo method in a program developed using Geant4* libraries. * Geant4 User’s Guide for Application Developers //Geant4 Collaboration.
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-MOPSA54
About •	Received ※ 27 September 2021 — Revised ※ 28 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 11 October 2021
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TUC01	Status of the Kurchatov Synchrotron Radiation Source	wiggler, controls, vacuum, electron	55
	A.G. Valentinov, A. Belkov, Ye. Fomin, E.V. Kaportsev, V. Korchuganov, Y.V. Krylov, V.I. Moiseev, K. Moseev, N.I. Moseiko, D.G. Odintsov, S.G. Pesterev, A.S. Smygacheva, A.I. Stirin, V.A. Ushakov NRC, Moscow, Russia
	The Kurchatov synchrotron radiation source goes on to operate in the range of synchrotron radiation from VUV up to hard X-ray. An electron current achieves 150 mA at 2.5 GeV, up to 12 experimental stations may function simultaneously. Improvement of the facility according Federal Program of KSRS modernization is in progress. Two 3 Tesla superconducting wigglers have been installed at main ring at 2019. They were tested with small electron beam current at 2020-2021. Wigglers’ influence on beam parameters is much closed to calculated value. Vacuum system has been upgraded at 2020. In 2021 control system will be completely modified. Manufactoring of third 181 MHz RF generator, new preliminary amplification cascades and new waveguides for all three generators continues in Budker Institute (Novosibirsk). Preparation of great modernization of the whole facility according Federal Program for science infrastructure development has been started.
	Slides TUC01 [17.060 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUC01
About •	Received ※ 24 September 2021 — Accepted ※ 27 September 2021 — Issued ※ 09 October 2021
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TUPSB09	Resonance Slow Extraction From Ion Synchrotron for Technological Application	extraction, septum, resonance, proton	248
	M.F. Blinov, I. Koop, V.A. Vostrikov BINP SB RAS, Novosibirsk, Russia I. Koop NSU, Novosibirsk, Russia
	Third-order resonance slow extraction from synchrotron is the most common use extraction method for external target experiments nuclear physics, proton and heavy ion therapy, since it can provide relatively stable beams in long time. The principle of third-order resonant slow extraction is intentionally exciting the third-order resonance by controlling detuning and sextupole strength to gradually release particles from inside to outside stable separatrix. BINP develop the ion synchrotron for wide range of technological application. The present paper describes slow extraction method with exiting betatron oscillations by the transverse RF-field. Such extraction technique provides stable current extraction for entire extraction time.
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB09
About •	Received ※ 30 September 2021 — Revised ※ 01 October 2021 — Accepted ※ 09 October 2021 — Issued ※ 21 October 2021
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TUPSB26	Lattice Options With Reverse Bending Magnets for USSR HMBA Storage Ring	lattice, SRF, emittance, storage-ring	280
	V.S. Dyubkov MEPhI, Moscow, Russia V.S. Dyubkov, T. Kulevoy NRC, Moscow, Russia T. Kulevoy, E.D. Tsyplakov ITEP, Moscow, Russia E.D. Tsyplakov MIPT, Dolgoprudniy, Moscow Region, Russia
	The 4th generation light source, the Ultimate Source of Synchrotron Radiation (USSR) is under design, to be built in Moscow region (Russia). It will be a 6 GeV and about 1100 m circumference storage ring synchrotron. Baseline lattice of the USSR for now is a scaled version of the ESRF-EBS Hybrid Multi-Bend Achromat (HMBA) lattice that was successfully commissioned in 2020. Its natural horizontal electron beam emittance is about 70 pm·rad. Further reduction of beam emittance can be achieved with the use of reverse bending magnets. The evolution of the envisaged lattices for the USSR storage ring, including options with reverse bends will be presented.
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB26
About •	Received ※ 24 September 2021 — Revised ※ 25 September 2021 — Accepted ※ 29 September 2021 — Issued ※ 18 October 2021
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TUPSB33	2.5 GeV Booster Synchrotron for a New Kurchatov Synchrotron Radiation Source	booster, lattice, electron, storage-ring	293
	A.S. Smygacheva, Ye. Fomin, V. Korchuganov, V.A. Ushakov, A.G. Valentinov NRC, Moscow, Russia
	The Project of complete modernization of the current accelerator complex is in progress in the NRC «Kurchatov Institute». A new booster synchrotron is a part of the injection complex for a new 3-d generation synchrotron light source. The booster has to ensure reliable and stable operation of the upgraded main storage ring. The paper presents the final design of the new booster synchrotron and its main parameters.
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB33
About •	Received ※ 22 September 2021 — Accepted ※ 23 September 2021 — Issued ※ 16 October 2021
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TUPSB34	New Lattice Design for Kurchatov Synchrotron Radiation Source	radiation, synchrotron-radiation, lattice, ion-source	297
	Ye. Fomin, V. Korchuganov NRC, Moscow, Russia
	Funding: The reported study was partially funded by RFBR, project number 19-29-12039 Nowadays the upgrade project of the 2nd generation synchrotron radiation source operating at NRC Kurchatov Institute has been ongoing. The main aim of the project is to create a new synchrotron radiation source with the same 124 m circumference and providing synchrotron radiation properties inherent to the 3rd generation sources (emittance ~ 3 nm·rad). The new machine will consist of new storage ring with 2.5 GeV electron energy, full energy booster synchrotron and 0.2 GeV linac. The mandatory requirement for the project is to keep all currently operating beamlines. In this article we present the design challenges and approaches for this machine, the conceptional design and baseline lattice.
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB34
About •	Received ※ 22 September 2021 — Revised ※ 29 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 20 October 2021
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TUPSB47	Stability Conditions for a Penning Trap with Rotating Quadrupole or Dipole Electric Fields	quadrupole, dipole, space-charge, experiment	324
	A.D. Ovsyannikov Saint Petersburg State University, Saint Petersburg, Russia
	The dynamics of particles in a Penning Malmberg Surko trap with Rotating Wall (rotating quadrupole and/or dipole electric field) and a buffer gas is considered. Electromagnetic traps are widely used for the accumulation and confinement of charged particles during various experiments in nuclear and accelerator physics, mass spectroscopy, and other fields. Traps are the main element of sources of charged particles in accelerators. An especially important role is played by traps with efficient accumulation during operation (in a cyclic mode) of ion synchrotrons and colliders with short-lived isotopes. The purpose of this work was to develop algorithms for constructing regions of asymptotic stability (according to Lyapunov) in the space of parameters describing additional rotating electric fields, and to determine the analytical conditions that must be satisfied by the trap parameters to achieve a given degree of stability. The influence of the space charge of a beam of accumulated particles on the stability of the system is also investigated. The calculation results and the proposed models can be used in the selection and adjustment of the main parameters of the designed traps of the considered type.
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB47
About •	Received ※ 30 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 15 October 2021
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WEB03	First Experience of Production and Testing the Superconducting Quadrupole and Corrector Magnets for the SIS100 Heavy Ion Accelerator of FAIR	quadrupole, sextupole, dipole, operation	75
	E.S. Fischer, Yu.G. Bespalov, T. Parfylo JINR/VBLHEP, Dubna, Moscow region, Russia A. Bleile, A. Waldt GSI, Darmstadt, Germany V.V. Borisov, H.G. Khodzhibagiyan, B.Yu. Kondratiev, D. Nikiforov, M.V. Petrov JINR, Dubna, Moscow Region, Russia
	The fast cycling superconducting SIS100 heavy ion accelerator is the designated working horse of the international Facility for Antiproton and Ion Research (FAIR) under construction at GSI in Darmstadt, Germany. The main dipoles will ramp with 4 T/s and with a repetition frequency of 1 Hz up to a maximum magnetic field of 1.9 T. The field gradient of the main quadrupole will reach 27.77 T/m. The integral magnetic field length of the horizontal/vertical steerer and of the chromaticity sextupole corrector magnets will provide 0.403/0.41 m and 0.383 m, respectively. The series production of the high current quadrupoles and of the individually ramped low current corrector magnets was started in 2020 at the JINR in Dubna and is planned to be completed in 2023. We present the technological challenges that have to be solved from production of the first magnets toward a stable and high rate series production with reliably magnet quality as well as the first test results at operation conditions.
	Slides WEB03 [18.411 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-WEB03
About •	Received ※ 07 October 2021 — Revised ※ 08 October 2021 — Accepted ※ 13 October 2021 — Issued ※ 19 October 2021
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WEPSC08	Vacuum Condition Simulations for Vacuum Chambers of Synchrotron Radiation Source	radiation, vacuum, storage-ring, synchrotron-radiation	358
	S.M. Polozov, V.S. Dyubkov, A.S. Panishev, V.L. Shatokhin MEPhI, Moscow, Russia V.S. Dyubkov, S.M. Polozov, V.L. Shatokhin NRC, Moscow, Russia
	Analysis of gas loads for the vacuum system chambers of the 6GeV synchrotron radiation (SR) source are carried out. The main source of gas loads is the photostimulated desorption induced by SR. The influence of storage ring lattice, geometric dimensions and beam parameters on the vacuum conditions in SR-source prototype chambers is studied. The geometric model of the storage ring chamber designed for simulation is considered. The simulation of the radiation flux parameters generated by the charged particles passing through the section of the vacuum chamber has been performed. The technique of calculating the parameters of SR and photostimulated desorption by means of Synrad+ and Molflow+ codes is applied.
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-WEPSC08
About •	Received ※ 27 September 2021 — Revised ※ 28 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 18 October 2021
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WEPSC12	Preliminary Calculation of the Power Coupler for the SYLA Storage Ring RF Cavity	cavity, coupling, storage-ring, operation	364
	S.V. Matsievskiy, M. Gusarova, M.V. Lalayan, Ya.V. Shashkov MEPhI, Moscow, Russia
	Several new accelerator facilities will be built in Russia in the next few years. One of those facilities is a 6 GeV storage ring light source, the Ultimate Source of Synchrotron Radiation to be built in Protvino, near Moscow. This paper considers storage ring RF cavity power coupler design issues and provides preliminary calculations of the device.
	Poster WEPSC12 [0.741 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-WEPSC12
About •	Received ※ 08 September 2021 — Accepted ※ 27 September 2021 — Issued ※ 22 October 2021
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WEPSC17	Vibrating Wire System for Fiducialization NICA Booster Superconducting Quadrupole Magnets	focusing, quadrupole, booster, collider	379
	T. Parfylo, M.A. Kashunin, V.A. Mykhailenko JINR/VBLHEP, Dubna, Moscow region, Russia V.V. Borisov, H.G. Khodzhibagiyan, B.Yu. Kondratiev, S.A. Kostromin, M.M. Shandov JINR, Dubna, Moscow Region, Russia
	The NICA (Nuclotron-based Ion Collider fAcility) is anew accelerator complex under construction at the the Laboratory of High Energy Physics (LHEP) JINR. The facility includes two injector chains, two existing superconducting synchrotrons Nuclotron and a new Booster, under construction superconducting Collider, consisting of two rings. The lattice of the Booster includes 48 superconducting quadrupole magnets that combined in doublets. Each doublet must be fiducialized to the calculated trajectory of the beam. Alignment of the magnetic axis is necessary for properly install the magnets at the beam trajectory. The vibrating wire technique was applied to obtain the position of the magnetic axis. A new measurement system has been worked out and produced at the LHEP. The magnetic axis positions of the quadrupole doublets are determined at the ambient temperature. Thepaper describes design of the measurement system, measuring procedure and results of the magnetic axis position measurements.
	Poster WEPSC17 [0.693 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-WEPSC17
About •	Received ※ 28 September 2021 — Revised ※ 29 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 22 October 2021
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WEPSC20	Magnets Design for 2.5 GeV Booster Synchrotron	HOM, sextupole, dipole, booster	386
	A.S. Smygacheva, Ye. Fomin, V. Korchuganov NRC, Moscow, Russia
	The Project of complete modernization of the current accelerator complex is in progress in the NRC «Kurchatov Institute». The development of a new booster synchrotron as a part of the injection complex for a new 3-d generation synchrotron light source is included in the Project. The booster synchrotron has 24 dipoles, 60 quadrupoles, 48 sextupoles and 24 correctors. In order to obtain the required field quality, 2D- and 3D-simulations of magnets were carried out. The obtained geometry for each of the magnets is presented in the paper.
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-WEPSC20
About •	Received ※ 18 September 2021 — Revised ※ 23 September 2021 — Accepted ※ 27 September 2021 — Issued ※ 08 October 2021
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WEPSC39	Data Collection, Archiving and Monitoring System for U70 Synchrotron	database, monitoring, interface, controls	417
	N.A. Oreshkova, V.A. Kalinin IHEP, Moscow Region, Russia
	This paper describes a data collection, archiving and monitoring system for U70 synchrotron. The system is designed to monitor the operation of the U-70 accelerator and is responsible for the collection of low-frequency (less than 2 kHz) analog signals from the U-70 technological systems, their processing and subsequent sending to the database using the Data Socket technology. The developed complex block diagram is presented. The hardware and its characteristics (number of channels, resolution, bandwidth) and the interface and functionality of the software are described. The results of using this system at the U-70 accelerator complex are presented.
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-WEPSC39
About •	Received ※ 09 September 2021 — Revised ※ 23 September 2021 — Accepted ※ 24 September 2021 — Issued ※ 11 October 2021
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WEPSC55	Development of the Low Intensity Extraction Beam Control System at Protom Synchrotron for Proton Radiography Implementation	proton, extraction, controls, experiment	439
	A.A. Pryanichnikov, Belikhin, M.A. Belikhin, A.E. Shemyakov, P.B. Zhogolev PhTC LPI RAS, Protvino, Russia Belikhin, M.A. Belikhin, A.A. Pryanichnikov, A.E. Shemyakov, P.B. Zhogolev Protom Ltd., Protvino, Russia Belikhin, M.A. Belikhin, A.P. Chernyaev, A.A. Pryanichnikov MSU, Moscow, Russia V. Rykalin ProtonVDA, Naperville, Illinois, USA
	Currently, the calculation of the proton range in patients receiving proton therapy is based on the conversion of Hounsfield CT units of the patient’s tissues into the relative stopping power of protons. Proton radiography is able to reduce these uncertainties by directly measuring proton stopping power. However, proton imaging systems cannot handle the proton beam intensities used in standard proton therapy. This means that for implementation of proton radiography it is necessary to reduce the intensity of the protons significantly. This study demonstrates the current version of the new beam control system for low proton intensity extraction. The system is based on automatic removable unit with special luminescence film and sensitive photoreceptor. Using of the removable module allows us to save initial parameters of the therapy beam. Remote automatic control of this unit will provide switch therapy and imaging modes between synchrotron cycles. The work describes algorithms of low flux beam control, calibration procedures and experimental measurements. Measurements and calibration procedures were performed with certified Protom Faraday Cup, PTW Bragg Peak Chamber and specially designed experimental external detector. The development can be implemented in any proton therapy complexes based on the Protom synchrotron. This allow us to use initial synchrotron beam as a tool for patient verification and to eliminate proton range uncertainties.
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-WEPSC55
About •	Received ※ 17 September 2021 — Accepted ※ 20 September 2021 — Issued ※ 04 October 2021
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FRB05	Updated Status of Protom Synchrotrons for Radiation Therapy	proton, radiation, extraction, injection	120
	A.A. Pryanichnikov, V. Alexandrov, V.E. Balakin, A.I. Bazhan, Belikhin, M.A. Belikhin, V.I. Chashurin, P.A. Lunev, A.E. Shemyakov, A.I. Shestopalov PhTC LPI RAS, Protvino, Russia V. Alexandrov, V.E. Balakin, A.I. Bazhan, Belikhin, M.A. Belikhin, P.A. Lunev, A.A. Pryanichnikov, A.E. Shemyakov, A.I. Shestopalov Protom Ltd., Protvino, Russia
	Physical-Technical Center of P.N. Lebedev Physical Institute of RAS and Protom Ltd. are engaged in development and implantation of synchrotrons for proton therapy into clinical practice. There are two proton therapy complexes "Prometheus" in Russia. That are fully developed and manufactured at Physical-Technical Center and Protom. Every day patients with head and neck cancer get treatment using "Prometheus" at the A. Tsyb Medical Radiological Research Center. At the moment these facilities together have accumulated more than 5 years of clinical experience. Two facilities are based on the Protom synchrotrons in the USA. One operates at the McLaren Hospital PT Center, it started to treat patients in 2018. Another one is as a part of the single-room proton therapy system "Radiance330" in Massachusetts General Hospital, that went into clinical operations in 2020. The first Israel proton therapy complex based on Protom synchrotron was launched in 2019. Protom facilities provide full stack of modern proton therapy technologies such as IMPT and pencil beam scanning. Key features of Protom synchrotron: low weight, compact size and low power consumption allow it to be placed in conventional hospitals without construction of any special infrastructure. This report presents current data on accelerator researches and developments of Physical-Technical Center and Protom Ltd. In addition, it provides data on the use of Protom based proton therapy complexes under the clinical conditions.
	Slides FRB05 [8.949 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-FRB05
About •	Received ※ 19 September 2021 — Revised ※ 30 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 11 October 2021
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FRC01	Neutron Field Measurements by GFPC Based Monitors at the Carbon Beam of IHEP U-70 Proton Synchrotron	neutron, simulation, experiment, radiation	129
	O.V. Sumaneev, I.L. Azhgirey, I.S. Bayshev, V.A. Pikalov IHEP, Moscow Region, Russia
	Neutron monitors with gas filled proportional counters as a sensitive element were presented at RuPAC-2018. These monitors have been used recently to measure fast neutron fluxes near the carbon beam based experimental facility at IHEP. The experimental facility "Radiobiological test setup at the U-70 accelerator" was built at NRC "Kurchatov Institute" - IHEP, Protvino, to carry out radiobiological and physical experiments on the extracted beam of carbon nuclei with an energy up to 450 MeV/nucleon. The measurements were compared with the CERN FLUKA code simulations.
	Slides FRC01 [0.859 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-FRC01
About •	Received ※ 30 September 2021 — Revised ※ 01 October 2021 — Accepted ※ 09 October 2021 — Issued ※ 22 October 2021
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Other Keywords

Page

MOPSA07

200 MeV Linear Electron Accelerator - Pre-Injector for a New Kurchatov Synchrotron Radiation Source

simulation, injection, linac, ion-source

145

I.A. Ashanin, S.M. Polozov, A.I. Pronikov, V.I. Rashchikov
MEPhI, Moscow, Russia
I.A. Ashanin, V. Korchuganov, S.M. Polozov, A.I. Pronikov, V.I. Rashchikov, V.A. Ushakov
NRC, Moscow, Russia

New linear electron accelerator (linac) with an energy of about 200 MeV (or 300 MeV in a high-energy version) is being proposed for injection into the booster synchrotron, which is being developed for the reconstruction of the SIBERIA-2 accelerator complex with the aim of upgrade to 3rd generation source at the NRC «Kurchatov Institute». A modernized linac and its specific elements layout will described in the report. The modeling of accelerating structure and optimization of electrodynamics characteristics and fields distribution and geometric in order to reduce the beam spectrum at the output of the linac was done. A step-by-step front-to-end beam dynamics simulation results will discuss.

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-MOPSA07

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Received ※ 29 September 2021 — Revised ※ 30 September 2021 — Accepted ※ 07 October 2021 — Issued ※ 12 October 2021

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MOPSA15

Thermodynamic Characteristics of the Superconducting Quadrupole Magnets of the NICA Booster Synchrotron

quadrupole, booster, experiment, radiation

162

A.A. Bortsova
JINR/VBLHEP, Dubna, Moscow region, Russia
H.G. Khodzhibagiyan, D. Nikiforov
JINR, Dubna, Moscow Region, Russia

The Booster synchrotron of the NICA accelerator complex in Dubna is designed for acceleration of heavy ions before injection into the Nuclotron. The first run of the Booster synchrotron was carried out in the end of 2020. This work presents calculated and experimental data of static heat leak and dynamic heat releases for quadrupole magnets of the Booster synchrotron with different configuration of the corrector magnets. Obtained results will be taken into account for development of new superconducting magnets and cryogenic installations.

Poster MOPSA15 [3.928 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-MOPSA15

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Received ※ 25 September 2021 — Revised ※ 26 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 19 October 2021

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MOPSA17

Automated System for Heating High-Vacuum Elements of Superconducting Synchrotrons of the NICA Complex

controls, vacuum, booster, collider

168

A.S. Sergeev, A.N. Svidetelev
JINR, Dubna, Moscow Region, Russia
A.V. Butenko
JINR/VBLHEP, Dubna, Moscow region, Russia

To obtain an ultrahigh vacuum, it is necessary to preliminarily degass the "warm" sections of the vacuum system of accelerators by prolonged heating to remove water vapor and molecules of other substances adsorbed on the inner surface of the walls of the vacuum chamber. The presented system allows you to heat products with a known unknown heat capacity and thermal conductivity. Some of the accelerators of the NICA complex are supplied without their own heating system and heating is carried out by specialists directly at the accelerator site.

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-MOPSA17

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Received ※ 29 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 11 October 2021

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MOPSA23

Machine Learning for the Storage Ring Optimization

ion-source, radiation, synchrotron-radiation, emittance

169

Ye. Fomin
NRC, Moscow, Russia

Funding: The reported study was funded by RFBR, project number 19-29-12039
The design and optimization of new lattice for modern synchrotron radiation sources are for the most part an art and highly dependent on the researcher skills. Since both modern existing and designing storage rings is very complex nonlinear system the researchers spend a lot of effort to solve their problems. In this work the use of machine learning technics to improve the efficiency of solving nonlinear systems optimization problems is considered.

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-MOPSA23

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Received ※ 06 October 2021 — Accepted ※ 09 October 2021 — Issued ※ 16 October 2021

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MOPSA39

Application of a Scintillation Detector for Periodic Monitoring of Beam Parameters at Medical Proton Therapy Complex "Prometheus"

proton, detector, radiation, extraction

176

A.E. Shemyakov, Belikhin, M.A. Belikhin, A.A. Pryanichnikov, A.I. Shestopalov
PhTC LPI RAS, Protein, Moscow region, Russia
Belikhin, M.A. Belikhin, A.A. Pryanichnikov
MSU, Moscow, Russia

Introduction: In November 2015 the first domestic complex of proton therapy "Prometheus" start to treat oncology patients. This complex uses a modern technique for irradiation of tumors by scanning with a pencil beam. This technique requires continuous monitoring and regular verification of main beam parameters such as range in water, focusing and lateral dimension. To control these parameters, we developed a waterproof detector for measurements in air and in a water phantom. Methods and materials: The detector system consists of a luminescent screen 5 cm in diameter, a mirror and a CCD camera. When the beam goes through the screen, a glow appears, the reflected image of which is perceived by the camera and analyzed. This design is waterproof, which makes it possible to perform measurements in water. To measure the range of protons in water, this detector was fixed on a special positioner, which allows to move the sensor with an accuracy of 0.2 mm. We measured the beams also in comparison with EBT3 dosimetric film for energies from 60 to 250 MeV with a step of 10 MeV. Same measurements of the ranges were carried out using a standard PTW Bragg Peak ionization chamber. Results: It was shown that this system is a simple and inexpensive tool for conducting regular quality assurance of beam parameters. Unlike the EBT3 dosimetric film, this detector gives an immediate response, which makes it possible to use it when debugging the accelerator and adjusting the beam.

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-MOPSA39

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Received ※ 17 September 2021 — Revised ※ 29 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 19 October 2021

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MOPSA46

Preliminary Design Study of the Gantry for the Proton Radiotherapy Center NRC "Kurchatov Institute"

dipole, proton, vacuum, quadrupole

196

A.N. Chernykh, M.S. Bulatov, V.S. Khoroshkov, G.I. Klenov
NRC, Moscow, Russia

A typical proton radiation therapy center, which includes a synchrotron with a power of 250 V, a gantry unit with a 360° rotation angle, and a unit with a fixed channel has been developed at NRC "Kurchatov Institute". In report, a diagram of a magneto-optical channel of a gantry beam installation and a project of a beamline of a gantry beam installation with magnetic elements will be presented. In addition, a frame for accommodation of the magnetic elements of the considered project of the gantry beamline will be presented.

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-MOPSA46

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Received ※ 28 September 2021 — Revised ※ 29 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 16 October 2021

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MOPSA54

Calculation of Dose Fields and Energy Spectra of Secondary Radiation in the Extraction Zone of a Synchrotron Accelerator for Protons With Energies Up to 700 MeV

proton, radiation, simulation, experiment

222

R.P. Truntseva, N.N. Kurapov, A.M. Opekunov
RFNC-VNIIEF, Sarov, Nizhniy Novgorod region, Russia
A.V. Telnov, N.V. Zavyalov
VNIIEF, Sarov, Russia

The possibility of using a multipurpose synchrotron accelerator for researching the processes of heavy charged particles interaction with various materials is considered. The accelerator provides proton energies up to 700 MeV. It is necessary to evaluate the emerging dose fields at the design stage of the experimental room. In this case, it is important to evaluate the dose distribution, energies and types of secondary radiation that may enter the adjacent rooms. This paper presents the results of the radiation environment evaluation in the radiation extraction zone of the synchrotron accelerator. Simulation results of secondary radiation energy spectra near the walls, which separate the irradiation zone from adjacent rooms, are presented. Proton energies are equal to 60, 85, 110 and 700 MeV are considered. Simulation was performed by the Monte Carlo method in a program developed using Geant4* libraries.
* Geant4 User’s Guide for Application Developers //Geant4 Collaboration.

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-MOPSA54

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Received ※ 27 September 2021 — Revised ※ 28 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 11 October 2021

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TUC01

Status of the Kurchatov Synchrotron Radiation Source

wiggler, controls, vacuum, electron

55

A.G. Valentinov, A. Belkov, Ye. Fomin, E.V. Kaportsev, V. Korchuganov, Y.V. Krylov, V.I. Moiseev, K. Moseev, N.I. Moseiko, D.G. Odintsov, S.G. Pesterev, A.S. Smygacheva, A.I. Stirin, V.A. Ushakov
NRC, Moscow, Russia

The Kurchatov synchrotron radiation source goes on to operate in the range of synchrotron radiation from VUV up to hard X-ray. An electron current achieves 150 mA at 2.5 GeV, up to 12 experimental stations may function simultaneously. Improvement of the facility according Federal Program of KSRS modernization is in progress. Two 3 Tesla superconducting wigglers have been installed at main ring at 2019. They were tested with small electron beam current at 2020-2021. Wigglers’ influence on beam parameters is much closed to calculated value. Vacuum system has been upgraded at 2020. In 2021 control system will be completely modified. Manufactoring of third 181 MHz RF generator, new preliminary amplification cascades and new waveguides for all three generators continues in Budker Institute (Novosibirsk). Preparation of great modernization of the whole facility according Federal Program for science infrastructure development has been started.

Slides TUC01 [17.060 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUC01

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Received ※ 24 September 2021 — Accepted ※ 27 September 2021 — Issued ※ 09 October 2021

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TUPSB09

Resonance Slow Extraction From Ion Synchrotron for Technological Application

extraction, septum, resonance, proton

248

M.F. Blinov, I. Koop, V.A. Vostrikov
BINP SB RAS, Novosibirsk, Russia
I. Koop
NSU, Novosibirsk, Russia

Third-order resonance slow extraction from synchrotron is the most common use extraction method for external target experiments nuclear physics, proton and heavy ion therapy, since it can provide relatively stable beams in long time. The principle of third-order resonant slow extraction is intentionally exciting the third-order resonance by controlling detuning and sextupole strength to gradually release particles from inside to outside stable separatrix. BINP develop the ion synchrotron for wide range of technological application. The present paper describes slow extraction method with exiting betatron oscillations by the transverse RF-field. Such extraction technique provides stable current extraction for entire extraction time.

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB09

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Received ※ 30 September 2021 — Revised ※ 01 October 2021 — Accepted ※ 09 October 2021 — Issued ※ 21 October 2021

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TUPSB26

Lattice Options With Reverse Bending Magnets for USSR HMBA Storage Ring

lattice, SRF, emittance, storage-ring

280

V.S. Dyubkov
MEPhI, Moscow, Russia
V.S. Dyubkov, T. Kulevoy
NRC, Moscow, Russia
T. Kulevoy, E.D. Tsyplakov
ITEP, Moscow, Russia
E.D. Tsyplakov
MIPT, Dolgoprudniy, Moscow Region, Russia

The 4th generation light source, the Ultimate Source of Synchrotron Radiation (USSR) is under design, to be built in Moscow region (Russia). It will be a 6 GeV and about 1100 m circumference storage ring synchrotron. Baseline lattice of the USSR for now is a scaled version of the ESRF-EBS Hybrid Multi-Bend Achromat (HMBA) lattice that was successfully commissioned in 2020. Its natural horizontal electron beam emittance is about 70 pm·rad. Further reduction of beam emittance can be achieved with the use of reverse bending magnets. The evolution of the envisaged lattices for the USSR storage ring, including options with reverse bends will be presented.

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB26

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Received ※ 24 September 2021 — Revised ※ 25 September 2021 — Accepted ※ 29 September 2021 — Issued ※ 18 October 2021

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TUPSB33

2.5 GeV Booster Synchrotron for a New Kurchatov Synchrotron Radiation Source

booster, lattice, electron, storage-ring

293

A.S. Smygacheva, Ye. Fomin, V. Korchuganov, V.A. Ushakov, A.G. Valentinov
NRC, Moscow, Russia

The Project of complete modernization of the current accelerator complex is in progress in the NRC «Kurchatov Institute». A new booster synchrotron is a part of the injection complex for a new 3-d generation synchrotron light source. The booster has to ensure reliable and stable operation of the upgraded main storage ring. The paper presents the final design of the new booster synchrotron and its main parameters.

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB33

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Received ※ 22 September 2021 — Accepted ※ 23 September 2021 — Issued ※ 16 October 2021

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TUPSB34

New Lattice Design for Kurchatov Synchrotron Radiation Source

radiation, synchrotron-radiation, lattice, ion-source

297

Ye. Fomin, V. Korchuganov
NRC, Moscow, Russia

Funding: The reported study was partially funded by RFBR, project number 19-29-12039
Nowadays the upgrade project of the 2nd generation synchrotron radiation source operating at NRC Kurchatov Institute has been ongoing. The main aim of the project is to create a new synchrotron radiation source with the same 124 m circumference and providing synchrotron radiation properties inherent to the 3rd generation sources (emittance ~ 3 nm·rad). The new machine will consist of new storage ring with 2.5 GeV electron energy, full energy booster synchrotron and 0.2 GeV linac. The mandatory requirement for the project is to keep all currently operating beamlines. In this article we present the design challenges and approaches for this machine, the conceptional design and baseline lattice.

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB34

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Received ※ 22 September 2021 — Revised ※ 29 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 20 October 2021

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TUPSB47

Stability Conditions for a Penning Trap with Rotating Quadrupole or Dipole Electric Fields

quadrupole, dipole, space-charge, experiment

324

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

The dynamics of particles in a Penning Malmberg Surko trap with Rotating Wall (rotating quadrupole and/or dipole electric field) and a buffer gas is considered. Electromagnetic traps are widely used for the accumulation and confinement of charged particles during various experiments in nuclear and accelerator physics, mass spectroscopy, and other fields. Traps are the main element of sources of charged particles in accelerators. An especially important role is played by traps with efficient accumulation during operation (in a cyclic mode) of ion synchrotrons and colliders with short-lived isotopes. The purpose of this work was to develop algorithms for constructing regions of asymptotic stability (according to Lyapunov) in the space of parameters describing additional rotating electric fields, and to determine the analytical conditions that must be satisfied by the trap parameters to achieve a given degree of stability. The influence of the space charge of a beam of accumulated particles on the stability of the system is also investigated. The calculation results and the proposed models can be used in the selection and adjustment of the main parameters of the designed traps of the considered type.

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB47

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Received ※ 30 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 15 October 2021

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WEB03

First Experience of Production and Testing the Superconducting Quadrupole and Corrector Magnets for the SIS100 Heavy Ion Accelerator of FAIR

quadrupole, sextupole, dipole, operation

75

E.S. Fischer, Yu.G. Bespalov, T. Parfylo
JINR/VBLHEP, Dubna, Moscow region, Russia
A. Bleile, A. Waldt
GSI, Darmstadt, Germany
V.V. Borisov, H.G. Khodzhibagiyan, B.Yu. Kondratiev, D. Nikiforov, M.V. Petrov
JINR, Dubna, Moscow Region, Russia

The fast cycling superconducting SIS100 heavy ion accelerator is the designated working horse of the international Facility for Antiproton and Ion Research (FAIR) under construction at GSI in Darmstadt, Germany. The main dipoles will ramp with 4 T/s and with a repetition frequency of 1 Hz up to a maximum magnetic field of 1.9 T. The field gradient of the main quadrupole will reach 27.77 T/m. The integral magnetic field length of the horizontal/vertical steerer and of the chromaticity sextupole corrector magnets will provide 0.403/0.41 m and 0.383 m, respectively. The series production of the high current quadrupoles and of the individually ramped low current corrector magnets was started in 2020 at the JINR in Dubna and is planned to be completed in 2023. We present the technological challenges that have to be solved from production of the first magnets toward a stable and high rate series production with reliably magnet quality as well as the first test results at operation conditions.

Slides WEB03 [18.411 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-WEB03

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Received ※ 07 October 2021 — Revised ※ 08 October 2021 — Accepted ※ 13 October 2021 — Issued ※ 19 October 2021

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WEPSC08

Vacuum Condition Simulations for Vacuum Chambers of Synchrotron Radiation Source

radiation, vacuum, storage-ring, synchrotron-radiation

358

S.M. Polozov, V.S. Dyubkov, A.S. Panishev, V.L. Shatokhin
MEPhI, Moscow, Russia
V.S. Dyubkov, S.M. Polozov, V.L. Shatokhin
NRC, Moscow, Russia

Analysis of gas loads for the vacuum system chambers of the 6GeV synchrotron radiation (SR) source are carried out. The main source of gas loads is the photostimulated desorption induced by SR. The influence of storage ring lattice, geometric dimensions and beam parameters on the vacuum conditions in SR-source prototype chambers is studied. The geometric model of the storage ring chamber designed for simulation is considered. The simulation of the radiation flux parameters generated by the charged particles passing through the section of the vacuum chamber has been performed. The technique of calculating the parameters of SR and photostimulated desorption by means of Synrad+ and Molflow+ codes is applied.

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-WEPSC08

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Received ※ 27 September 2021 — Revised ※ 28 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 18 October 2021

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WEPSC12

Preliminary Calculation of the Power Coupler for the SYLA Storage Ring RF Cavity

cavity, coupling, storage-ring, operation

364

S.V. Matsievskiy, M. Gusarova, M.V. Lalayan, Ya.V. Shashkov
MEPhI, Moscow, Russia

Several new accelerator facilities will be built in Russia in the next few years. One of those facilities is a 6 GeV storage ring light source, the Ultimate Source of Synchrotron Radiation to be built in Protvino, near Moscow. This paper considers storage ring RF cavity power coupler design issues and provides preliminary calculations of the device.

Poster WEPSC12 [0.741 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-WEPSC12

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Received ※ 08 September 2021 — Accepted ※ 27 September 2021 — Issued ※ 22 October 2021

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WEPSC17

Vibrating Wire System for Fiducialization NICA Booster Superconducting Quadrupole Magnets

focusing, quadrupole, booster, collider

379

T. Parfylo, M.A. Kashunin, V.A. Mykhailenko
JINR/VBLHEP, Dubna, Moscow region, Russia
V.V. Borisov, H.G. Khodzhibagiyan, B.Yu. Kondratiev, S.A. Kostromin, M.M. Shandov
JINR, Dubna, Moscow Region, Russia

The NICA (Nuclotron-based Ion Collider fAcility) is anew accelerator complex under construction at the the Laboratory of High Energy Physics (LHEP) JINR. The facility includes two injector chains, two existing superconducting synchrotrons Nuclotron and a new Booster, under construction superconducting Collider, consisting of two rings. The lattice of the Booster includes 48 superconducting quadrupole magnets that combined in doublets. Each doublet must be fiducialized to the calculated trajectory of the beam. Alignment of the magnetic axis is necessary for properly install the magnets at the beam trajectory. The vibrating wire technique was applied to obtain the position of the magnetic axis. A new measurement system has been worked out and produced at the LHEP. The magnetic axis positions of the quadrupole doublets are determined at the ambient temperature. Thepaper describes design of the measurement system, measuring procedure and results of the magnetic axis position measurements.

Poster WEPSC17 [0.693 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-WEPSC17

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Received ※ 28 September 2021 — Revised ※ 29 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 22 October 2021

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WEPSC20

Magnets Design for 2.5 GeV Booster Synchrotron

HOM, sextupole, dipole, booster

386

A.S. Smygacheva, Ye. Fomin, V. Korchuganov
NRC, Moscow, Russia

The Project of complete modernization of the current accelerator complex is in progress in the NRC «Kurchatov Institute». The development of a new booster synchrotron as a part of the injection complex for a new 3-d generation synchrotron light source is included in the Project. The booster synchrotron has 24 dipoles, 60 quadrupoles, 48 sextupoles and 24 correctors. In order to obtain the required field quality, 2D- and 3D-simulations of magnets were carried out. The obtained geometry for each of the magnets is presented in the paper.

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-WEPSC20

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Received ※ 18 September 2021 — Revised ※ 23 September 2021 — Accepted ※ 27 September 2021 — Issued ※ 08 October 2021

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WEPSC39

Data Collection, Archiving and Monitoring System for U70 Synchrotron

database, monitoring, interface, controls

417

N.A. Oreshkova, V.A. Kalinin
IHEP, Moscow Region, Russia

This paper describes a data collection, archiving and monitoring system for U70 synchrotron. The system is designed to monitor the operation of the U-70 accelerator and is responsible for the collection of low-frequency (less than 2 kHz) analog signals from the U-70 technological systems, their processing and subsequent sending to the database using the Data Socket technology. The developed complex block diagram is presented. The hardware and its characteristics (number of channels, resolution, bandwidth) and the interface and functionality of the software are described. The results of using this system at the U-70 accelerator complex are presented.

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-WEPSC39

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Received ※ 09 September 2021 — Revised ※ 23 September 2021 — Accepted ※ 24 September 2021 — Issued ※ 11 October 2021

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WEPSC55

Development of the Low Intensity Extraction Beam Control System at Protom Synchrotron for Proton Radiography Implementation

proton, extraction, controls, experiment

439

A.A. Pryanichnikov, Belikhin, M.A. Belikhin, A.E. Shemyakov, P.B. Zhogolev
PhTC LPI RAS, Protvino, Russia
Belikhin, M.A. Belikhin, A.A. Pryanichnikov, A.E. Shemyakov, P.B. Zhogolev
Protom Ltd., Protvino, Russia
Belikhin, M.A. Belikhin, A.P. Chernyaev, A.A. Pryanichnikov
MSU, Moscow, Russia
V. Rykalin
ProtonVDA, Naperville, Illinois, USA

Currently, the calculation of the proton range in patients receiving proton therapy is based on the conversion of Hounsfield CT units of the patient’s tissues into the relative stopping power of protons. Proton radiography is able to reduce these uncertainties by directly measuring proton stopping power. However, proton imaging systems cannot handle the proton beam intensities used in standard proton therapy. This means that for implementation of proton radiography it is necessary to reduce the intensity of the protons significantly. This study demonstrates the current version of the new beam control system for low proton intensity extraction. The system is based on automatic removable unit with special luminescence film and sensitive photoreceptor. Using of the removable module allows us to save initial parameters of the therapy beam. Remote automatic control of this unit will provide switch therapy and imaging modes between synchrotron cycles. The work describes algorithms of low flux beam control, calibration procedures and experimental measurements. Measurements and calibration procedures were performed with certified Protom Faraday Cup, PTW Bragg Peak Chamber and specially designed experimental external detector. The development can be implemented in any proton therapy complexes based on the Protom synchrotron. This allow us to use initial synchrotron beam as a tool for patient verification and to eliminate proton range uncertainties.

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-WEPSC55

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Received ※ 17 September 2021 — Accepted ※ 20 September 2021 — Issued ※ 04 October 2021

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FRB05

Updated Status of Protom Synchrotrons for Radiation Therapy

proton, radiation, extraction, injection

120

A.A. Pryanichnikov, V. Alexandrov, V.E. Balakin, A.I. Bazhan, Belikhin, M.A. Belikhin, V.I. Chashurin, P.A. Lunev, A.E. Shemyakov, A.I. Shestopalov
PhTC LPI RAS, Protvino, Russia
V. Alexandrov, V.E. Balakin, A.I. Bazhan, Belikhin, M.A. Belikhin, P.A. Lunev, A.A. Pryanichnikov, A.E. Shemyakov, A.I. Shestopalov
Protom Ltd., Protvino, Russia

Physical-Technical Center of P.N. Lebedev Physical Institute of RAS and Protom Ltd. are engaged in development and implantation of synchrotrons for proton therapy into clinical practice. There are two proton therapy complexes "Prometheus" in Russia. That are fully developed and manufactured at Physical-Technical Center and Protom. Every day patients with head and neck cancer get treatment using "Prometheus" at the A. Tsyb Medical Radiological Research Center. At the moment these facilities together have accumulated more than 5 years of clinical experience. Two facilities are based on the Protom synchrotrons in the USA. One operates at the McLaren Hospital PT Center, it started to treat patients in 2018. Another one is as a part of the single-room proton therapy system "Radiance330" in Massachusetts General Hospital, that went into clinical operations in 2020. The first Israel proton therapy complex based on Protom synchrotron was launched in 2019. Protom facilities provide full stack of modern proton therapy technologies such as IMPT and pencil beam scanning. Key features of Protom synchrotron: low weight, compact size and low power consumption allow it to be placed in conventional hospitals without construction of any special infrastructure. This report presents current data on accelerator researches and developments of Physical-Technical Center and Protom Ltd. In addition, it provides data on the use of Protom based proton therapy complexes under the clinical conditions.

Slides FRB05 [8.949 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-FRB05

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Received ※ 19 September 2021 — Revised ※ 30 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 11 October 2021

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FRC01

Neutron Field Measurements by GFPC Based Monitors at the Carbon Beam of IHEP U-70 Proton Synchrotron

neutron, simulation, experiment, radiation

129

O.V. Sumaneev, I.L. Azhgirey, I.S. Bayshev, V.A. Pikalov
IHEP, Moscow Region, Russia

Neutron monitors with gas filled proportional counters as a sensitive element were presented at RuPAC-2018. These monitors have been used recently to measure fast neutron fluxes near the carbon beam based experimental facility at IHEP. The experimental facility "Radiobiological test setup at the U-70 accelerator" was built at NRC "Kurchatov Institute" - IHEP, Protvino, to carry out radiobiological and physical experiments on the extracted beam of carbon nuclei with an energy up to 450 MeV/nucleon. The measurements were compared with the CERN FLUKA code simulations.

Slides FRC01 [0.859 MB]

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reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-FRC01

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Received ※ 30 September 2021 — Revised ※ 01 October 2021 — Accepted ※ 09 October 2021 — Issued ※ 22 October 2021

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