RuPAC2021 - List of Keywords (operation)

Paper	Title	Other Keywords	Page
MOPSA49	DC140 Cyclotron, Trajectory Analysis of Beam Acceleration and Extraction	cyclotron, acceleration, extraction, injection	205
	I.A. Ivanenko, N.Yu. Kazarinov JINR, Dubna, Moscow Region, Russia V.I. Lisov JINR/FLNR, Moscow region, Russia
	At the present time, the activities on creation of the new heavy-ion isochronous cyclotron DC140 are carried out at Joint Institute for Nuclear Research. DC140 facility is intended for SEE testing of microchip, for production of track membranes and for solving of applied physics problems. Cyclotron will produce accelerated beams of ions A/Z= 5 - 5.5 and 7. 5 - 8.25 with a fixed beam energy 4.8 MeV/n and 2.124 MeV/n respectively. The variation of operation modes is provided by changing of magnetic field in the range 1.4T - 1.55T with fixed generator frequency 8.632 MHz. In this report, the results of design and simulation of the beam acceleration and extraction are presented.
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-MOPSA49
About •	Received ※ 12 September 2021 — Revised ※ 15 September 2021 — Accepted ※ 20 September 2021 — Issued ※ 02 October 2021
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUY01	VEPP-2000 Collider Complex Operation in 2019-2021 Runs	luminosity, collider, vacuum, detector	28
	M.V. Timoshenko, Yu. Aktershev, O.V. Belikov, D.E. Berkaev, D.B. Burenkov, V.P. Druzhinin, K. Gorchakov, G.V. Karpov, A.S. Kasaev, A.N. Kirpotin, S.A. Kladov, I. Koop, A.V. Kupurzhanov, G.Y. Kurkin, M.A. Lyalin, A.P. Lysenko, S.V. Motygin, A.V. Otboev, A.V. Pavlenko, E. Perevedentsev, V.P. Prosvetov, Yu.A. Rogovsky, A.M. Semenov, A.I. Senchenko, L.E. Serdakov, P.Yu. Shatunov, Y.M. Shatunov, D.B. Shwartz, V.D. Yudin, I.M. Zemlyansky, Yu.M. Zharinov BINP SB RAS, Novosibirsk, Russia S.A. Kladov, I. Koop, M.A. Lyalin, A.V. Pavlenko, E. Perevedentsev, Yu.A. Rogovsky, A.I. Senchenko, P.Yu. Shatunov, Y.M. Shatunov, D.B. Shwartz NSU, Novosibirsk, Russia Yu.A. Rogovsky Budker INP & NSU, Novosibirsk, Russia A.M. Semenov BINP & NSTU, Novosibirsk, Russia
	VEPP-2000 is the only electron-positron collider operating with a round beam permitting to increase the limit of beam-beam effects. VEPP-2000 is the compact collider with 24.4 m-circumference which has record luminosity at energy up to 1 GeV per bunch (1032 1/cm²s), magnetic fields in superconducting solenoids (13 T) and in the bending magnets (2.4 T). Collider complex experimental program of 2019-2021 was focused on several energy ranges per bunch. Energy range in the second half of 2019 was 180-300 MeV, in the first half of 2020 ¿ 935-970 MeV, in the first half of 2021 - 970-1003.5 MeV. Data taking was carried out by CMD-3 and SND detectors and operation efficiency is compared with previous runs. Luminosity was limited by beam-beam effects. 2021 year was clouded by vacuum accident and subsequent intensive degassing using beam synchrotron radiation.
	Slides TUY01 [2.449 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUY01
About •	Received ※ 11 October 2021 — Accepted ※ 13 October 2021 — Issued ※ 23 October 2021
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TUA02	Current Status of VEPP-5 Injection Complex	positron, injection, controls, electron	37
	Yu.I. Maltseva, A.V. Andrianov, K.V. Astrelina, V.V. Balakin, A.M. Barnyakov, A.M. Batrakov, O.V. Belikov, D.E. Berkaev, D. Bolkhovityanov, F.A. Emanov, A.R. Frolov, G.V. Karpov, A.S. Kasaev, A.A. Kondakov, N.Kh. Kot, E.S. Kotov, G.Y. Kurkin, R.M. Lapik, N.N. Lebedev, A.E. Levichev, A.Yu. Martynovsky, P.V. Martyshkin, S.V. Motygin, A.A. Murasev, V. Muslivets, D.A. Nikiforov, A.V. Pavlenko, A.M. Pilan, Yu.A. Rogovsky, S.L. Samoylov, A.G. Tribendis, S. Vasiliev, V.D. Yudin BINP SB RAS, Novosibirsk, Russia A.V. Andrianov, V.V. Balakin, F.A. Emanov, E.S. Kotov, A.E. Levichev, Yu.I. Maltseva, D.A. Nikiforov, A.V. Pavlenko, Yu.A. Rogovsky NSU, Novosibirsk, Russia A.G. Tribendis NSTU, Novosibirsk, Russia
	VEPP-5 Injection Complex (IC) supplies VEPP-2000 and VEPP-4 colliders at Budker Institute of Nuclear Physics (BINP, Russia) with high energy electron and positron beams. Since 2016 the IC has shown the ability to support operation of both colliders routinely with maximum positron storage rate of 1.7·10¹⁰ e+/s. Stable operation at the energy of 430 MeV has been reached. Research on further improvements on the IC performance is carried out. In particular control system was improved, additional beam diagnostics systems were developed, monitoring of RF system was upgraded. In this paper, the latest achieved IC performance, operational results and prospects are presented.
	Slides TUA02 [2.966 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUA02
About •	Received ※ 28 September 2021 — Revised ※ 01 October 2021 — Accepted ※ 09 October 2021 — Issued ※ 11 October 2021
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TUPSB35	3D Simulation Study and Optimization of Magnetic System of DECRIS Ion Source with the Pumping Frequency 28 GHz	solenoid, sextupole, ECR, ion-source	300
	V.M. Amoskov, E.I. Gapionok, V.P. Kukhtin, A.N. Labusov, E.A. Lamzin, A. Makarov, I.Yu. Rodin, A.V. Safonov, N. Shatil, D.B. Stepanov, E.R. Zapretilina NIIEFA, St. Petersburg, Russia S.L. Bogomolov, A.A. Efremov JINR, Dubna, Moscow Region, Russia S.E. Sytchevsky Saint Petersburg State University, Saint Petersburg, Russia
	A superconducting magnet system for a 28 GHz ECR ion source DECRIS-SC2 was studied in order to select its parameters and optimize performance. Parametric magnetic models were performed for two design configurations, conventional ("sextupole-in-solenoid") and reversed ("solenoid-in-sextupole"). In the "sextupole-in-solenoid" design the racetrack coils of the sextupole magnet used for radial plasma confinement are located inside the solenoids producing the axial field. In the "solenoid-in-sextupole" design the coils arrangement is reversed. For both configurations, electromagnetic effect the booster and the steel poles on the magnet performance was investigated from the point of view critical parameters of the system ¿ currents, fields, and forces. Results of the parametric computations were used to optimize the geometry and sizes of the magnet as well as the magnetic shield, the booster, and the poles. For better reliability and validation of the result, computations were performed with two magnetostatic codes, KOMPOT and KLONDIKE, utilizing the differential and integral formulations, respectively. A comparison of the obtained parameters was used to select the candidate magnet configuration for further design and manufacture.
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB35
About •	Received ※ 28 September 2021 — Revised ※ 29 September 2021 — Accepted ※ 04 October 2021 — Issued ※ 18 October 2021
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TUPSB38	Magnetic System With Variable Characteristics for a 2.45 GHz ECRIS	ECR, plasma, solenoid, ion-source	310
	M.S. Dmitriyev, K.G. Artamonov, O.A. Ivanov, M.I. Zhigailova MEPhI, Moscow, Russia
	Particle sources might be considered as an incredibly significant part of the accelerator system. Nowadays high-energy acceleration requires the types of ion sources implemented to produce beams of ions and protons of high energy and intensity. The current study is aimed to con-sider the design of the magnetic system of ECRIS with the operating frequency of 2.45 GHz for producing pro-tons and double-charged helium ions. The numerical simulation of the magnetic system was made by the Finite Element Method. The adjustment of the axial distribution of the magnetic field inside the plasma chamber is realized by shifting the ring magnets. Additional tuning of the axial magnetic field is presented by solenoids introduced for providing the required Binj and Bext adjustment as well as the Bmin control on the axis. For the simplification of the structure the alternating design of the ring magnets with trapezoidal components was considered. Furthermore, the magnetic system allows operating in both single-charged and multiply charged ions generation modes, thus the microwave source mode and the ECR mode are realizable for this configuration. Therefore, the study enables a better understanding of the feasibility of the ECRIS magnetic system with variable characteristics.
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB38
About •	Received ※ 29 September 2021 — Revised ※ 30 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 19 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, synchrotron	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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WEPSC06	Asess Input Data Uncertainties in Thermal-Mechanical Calculations of the Outlet Window Membrane of the LUE-200 Accelerator	electron, neutron, simulation, experiment	352
	I.V. Burkov JINR/FLNP, Moscow Region, Russia A.P. Sumbaev JINR, Dubna, Moscow Region, Russia
	The maximum values of the temperature fields and stress-strain state are calculated for various configurations of the outlet window membrane of the LUE-200 accelera-tor with assessing uncertainties in input data. The ther-momechanical parameters are estimated by simulating the electron beam pulsed action mode on the membrane in the computational models based on the mathematical description of the most significant physical processes. The obtained numerical modelling results demonstrated the importance of assessing uncertainties in input data for substantiating the safe operation limits of IREN facility.
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-WEPSC06
About •	Received ※ 24 September 2021 — Revised ※ 01 October 2021 — Accepted ※ 09 October 2021 — Issued ※ 09 October 2021
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WEPSC12	Preliminary Calculation of the Power Coupler for the SYLA Storage Ring RF Cavity	cavity, coupling, storage-ring, synchrotron	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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WEPSC21	Light Ion Accelerator Magnets	quadrupole, dipole, simulation, power-supply	390
	I.A. Yurin, M.S. Dmitriyev, E.N. Indiushnii, S.M. Polozov MEPhI, Moscow, Russia
	At the moment, the National Research Nuclear University (MEPhI) is developing an injector for an accelerator of light ions with an energy of 7.5 MeV / nucleon. The injector uses several tens of quadrupole magnets with a magnetic field gradient of 6-18 T / m and several units of dipole magnets. Key requirements for quadrupole magnets include large aperture, compact transverse dimensions, uniform shape and design, ease of fabrication from a manufacturing standpoint, field accuracy within 0.1%, and low power consumption. This article will describe the requirements, simulation results, and preliminary designs for quadrupole and dipole magnets.
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-WEPSC21
About •	Received ※ 21 September 2021 — Revised ※ 30 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 15 October 2021
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WEPSC34	Treatment of the Results Measurement of Profile Beam Using Wire Scanners at Accelerator U-70 IHEP	proton, feedback, detector, betatron	410
	D.A. Vasiliev, V.T. Baranov, V.A. Kalinin, O.P. Lebedev, A. Lutchev, D.A. Savin IHEP, Moscow Region, Russia
	The IHEP has developed fast wire scanners based on servomotors with a scanning speed of V = 16m/s. For processing of analog signals from detectors, a digital USB oscilloscope NI USB-5133 manufactured by National Instruments has been chosen. The paper describes methods of data processing from a wire scanner using a program developed in the LabVIEW environment and obtaining information about beam parameters as well. To determine the frequency of beam revolution, a fast Fourier transform is used. The measured input signal is integrated at a chosed number of turns of the beam. The amplitude, center position, offset, rms deviation of the resulting distribution and beam sizes at the corresponding energy level are calculated using the Gaussian Peak Fit VI library element. The data of beam profile in different modes of accelerator operation are presented.
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-WEPSC34
About •	Received ※ 06 September 2021 — Revised ※ 07 September 2021 — Accepted ※ 13 September 2021 — Issued ※ 28 September 2021
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WEPSC44	Beam Loss Monitoring System for the SKIF Synchrotron Light Source	storage-ring, simulation, electron, diagnostics	426
	Yu.I. Maltseva, A.D. Khilchenko, O.I. Meshkov, A.A. Morsina BINP SB RAS, Novosibirsk, Russia S.V. Ivanenko, E.A. Puryga Budker Institute of Nuclear Physics, Novosibirsk, Russia X.C. Ma BINP, Novosibirsk, Russia Yu.I. Maltseva, O.I. Meshkov NSU, Novosibirsk, Russia A.A. Morsina NSTU, Novosibirsk, Russia
	The Siberian ring source of photons (SKIF) is a new 3 GeV fourth-generation synchrotron light source being developed by the Budker Institute of Nuclear Physics (BINP). In order to ensure its reliable operation, beam loss diagnostics system is required. Two types of beam loss monitors will be installed at the SKIF: 5 fiber-based Cherenkov Beam Loss Monitors (CBLM) for the linac and transfer lines and 128 Scintillator-based Beam Loss Monitors (SBLM) for the storage ring. Sophisticated electronic equipment are employed to use these monitors at different SKIF operating modes. The article describes the design of the SKIF beam loss diagnostics system based on numerical simulations and experimental studies.
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-WEPSC44
About •	Received ※ 08 October 2021 — Accepted ※ 09 October 2021 — Issued ※ 18 October 2021
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WEPSC45	Measurement of the Electron Beam Spectrum by the Absorbing Filters Method During a Single Pulse	electron, experiment, gun, high-voltage	430
	A.A. Drozdovsky, A.V. Bogdanov, S.A. Drozdovsky, A.V. Kantsyrev, A. Khurchiev, V.A. Panyushkin, S.M. Savin, A.V. Skobliakov, S.A. Visotski, V.A. Volkov ITEP, Moscow, Russia
	Funding: Work supported by R&D Project between NRC "Kurchatov Institute" - ITEP and TRINITI The interest in measuring spectrum of electron beams by the method of absorbing filters is due to its technical accessibility, compactness, efficiency and usability at various research facilities. The complexity of this method lies in severe ill-posedness of the inverse problem of reconstruction the spectrum from the beam absorption. The task of our work is the operational control of the spectrum of a beam with the maximum energy up to 300 keV. The current collector package consists of 16 insulated identical aluminum foils with the 1 mm gap between. The thickness range of the foils is 10 to 25 microns, depending on the maximum electron energy. The charge of the foils after passing the beam is measured by the ADC. The assembly geometry was calculated by the Monte Carlo method to determine the accumulation of charges on foils when monoenergetic beams are transmitted in the range from 10 to 300 keV with step increment of 10 keV. The inverse problem was solved by Tikhonov regularization. It turned out that a high-accuracy fitting of the input data and the transformation kernel by statistical distributions is the primary factor, which allows to reduce the regularization parameter to almost zero. The validity of the technique applied is confirmed by the fact that the spectrum obtained at the maximum electron energy of the beam of 250 keV is in satisfactory agreement with the spectrum measured on a magnetic spectrometer.
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-WEPSC45
About •	Received ※ 20 September 2021 — Revised ※ 30 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 09 October 2021
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WEPSC56	Beam Parameters Measurement and Control Software Tools for VEPP-5 Injection Complex Damping Ring	damping, injection, software, software-tool	443
	V.V. Balakin, D.E. Berkaev, F.A. Emanov BINP SB RAS, Novosibirsk, Russia
	Beam parameters control and operation software tools for BINP VEPP-5 Injection Complex Damping ring consisting of two parts were developed. Beam parameters control includes processing of measured turn-by-turn beam coordinates from all Damping ring beam position monitors and displaying such features as tunes and beam position into vacuum chamber. This part gives an opportunity to measure Damping ring response matrices and carry out its processing too. Beam parameters operation is based on knobs creating. Knob is combination of accelerator control elements, which performs an isolated shift of one selected parameter, e.g. only vertical betatron tune. This part is devoted to their creation and application on Injection Complex VEPP-5. This paper presents review of developed software tools and their application result on VEPP-5 Injection Complex: beam position adjustment via response matrix measurements and quantification the amount of Damping ring captured particles during the injection process depending on beam tunes.
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-WEPSC56
About •	Received ※ 06 September 2021 — Accepted ※ 27 September 2021 — Issued ※ 16 October 2021
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FRB02	Accelerators of ELV Series: Current Status and Further Development	electron, extraction, power-supply, status	111
	D.S. Vorobev, E.V. Domarov, S. Fadeev, M. Golkovsky, Yu.I. Golubenko, D.A. Kogut, A.I. Korchagin, N.K. Kuksanov, A. Lavrukhin, P.I. Nemytov, R.A. Salimov, A.V. Semenov BINP SB RAS, Novosibirsk, Russia
	For many years Budker Institute of Nuclear Physics produces medium-energy industrial electron beam accelerators. Flexible (due to the possibility of completing with different systems) and reliable accelerators cover the energy range from 0.3 to 3 MeV, and up to 130 mA of beam current, with power up to 100 kW. High electrical efficiency allows the use of accelerators in almost all areas of radiation technology, from cross-linking of the insulation, heat shrinkable tubes and films to the production of foamed polyethylene and modification of rubber blanks for tires. All models have a unified design with a difference in overall dimensions, the length of the accelerating tube, the number of high-voltage rectifier sections, and the type of extraction device. This makes it easy to adapt the accelerators to the requirements of the technology line. ELV accelerator with an energy range of 0.3-0.5 MeV, beam current up to 130 mA, and power up to 100 kW was successfully designed, tested, and installed on the customer’s site. The accelerator is compact in overall dimensions and installed in the local steel shielding. The electron beam is extracted through a two-windows extraction system with one titanium foil 180 mm wide. New accelerators of the ELV type are also being developed. Namely ELV-15 with energy range up to 3.0 MeV and power up to 100 kW. At present time accelerator was assembled and under testing in Novosibirsk.
	Slides FRB02 [5.380 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-FRB02
About •	Received ※ 26 September 2021 — Accepted ※ 27 September 2021 — Issued ※ 11 October 2021
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FRB04	A Linear Accelerator for Proton Therapy	linac, proton, acceleration, focusing	117
	V.V. Paramonov, A.P. Durkin, A. Kolomiets RAS/INR, Moscow, Russia
	For applications in proton therapy, linear accelerators can provide beam performances not achievable with cyclic facilities. The results of the development of a proposal for a linac with the maximal proton energy of 230 MeV are presented. Operating in a pulsed mode, with a repetition rate not less than 50 Hz, the linac is designed to accelerate up to 10¹³ protons per irradiation cycle lasting from 10 to 200 seconds. Possibilities of fast, from pulse to pulse, adjustment of the output energy in the range from 60 MeV to 230 MeV, formation and acceleration to the output energy of a "pencil-like" beam with a diameter of ~ 2 mm are shown. Optimized solutions, proposed for both the accelerating-focusing channel and the technical systems of the linac make it possible to create a facility with high both target and technical and economic features. Special attention, due to the selection of proven in long-term operation parameters of the systems, is paid to ensuring the reliability of the linac operation. The feasibility of linac is substantiated on the basis of mastered or modified with a guarantee industrial equipment.
	Slides FRB04 [5.370 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-FRB04
About •	Received ※ 16 September 2021 — Revised ※ 30 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 13 October 2021
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Paper

Title

Other Keywords

Page

MOPSA49

DC140 Cyclotron, Trajectory Analysis of Beam Acceleration and Extraction

cyclotron, acceleration, extraction, injection

205

I.A. Ivanenko, N.Yu. Kazarinov
JINR, Dubna, Moscow Region, Russia
V.I. Lisov
JINR/FLNR, Moscow region, Russia

At the present time, the activities on creation of the new heavy-ion isochronous cyclotron DC140 are carried out at Joint Institute for Nuclear Research. DC140 facility is intended for SEE testing of microchip, for production of track membranes and for solving of applied physics problems. Cyclotron will produce accelerated beams of ions A/Z= 5 - 5.5 and 7. 5 - 8.25 with a fixed beam energy 4.8 MeV/n and 2.124 MeV/n respectively. The variation of operation modes is provided by changing of magnetic field in the range 1.4T - 1.55T with fixed generator frequency 8.632 MHz. In this report, the results of design and simulation of the beam acceleration and extraction are presented.

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-MOPSA49

About •

Received ※ 12 September 2021 — Revised ※ 15 September 2021 — Accepted ※ 20 September 2021 — Issued ※ 02 October 2021

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

TUY01

VEPP-2000 Collider Complex Operation in 2019-2021 Runs

luminosity, collider, vacuum, detector

28

M.V. Timoshenko, Yu. Aktershev, O.V. Belikov, D.E. Berkaev, D.B. Burenkov, V.P. Druzhinin, K. Gorchakov, G.V. Karpov, A.S. Kasaev, A.N. Kirpotin, S.A. Kladov, I. Koop, A.V. Kupurzhanov, G.Y. Kurkin, M.A. Lyalin, A.P. Lysenko, S.V. Motygin, A.V. Otboev, A.V. Pavlenko, E. Perevedentsev, V.P. Prosvetov, Yu.A. Rogovsky, A.M. Semenov, A.I. Senchenko, L.E. Serdakov, P.Yu. Shatunov, Y.M. Shatunov, D.B. Shwartz, V.D. Yudin, I.M. Zemlyansky, Yu.M. Zharinov
BINP SB RAS, Novosibirsk, Russia
S.A. Kladov, I. Koop, M.A. Lyalin, A.V. Pavlenko, E. Perevedentsev, Yu.A. Rogovsky, A.I. Senchenko, P.Yu. Shatunov, Y.M. Shatunov, D.B. Shwartz
NSU, Novosibirsk, Russia
Yu.A. Rogovsky
Budker INP & NSU, Novosibirsk, Russia
A.M. Semenov
BINP & NSTU, Novosibirsk, Russia

VEPP-2000 is the only electron-positron collider operating with a round beam permitting to increase the limit of beam-beam effects. VEPP-2000 is the compact collider with 24.4 m-circumference which has record luminosity at energy up to 1 GeV per bunch (1032 1/cm²s), magnetic fields in superconducting solenoids (13 T) and in the bending magnets (2.4 T). Collider complex experimental program of 2019-2021 was focused on several energy ranges per bunch. Energy range in the second half of 2019 was 180-300 MeV, in the first half of 2020 ¿ 935-970 MeV, in the first half of 2021 - 970-1003.5 MeV. Data taking was carried out by CMD-3 and SND detectors and operation efficiency is compared with previous runs. Luminosity was limited by beam-beam effects. 2021 year was clouded by vacuum accident and subsequent intensive degassing using beam synchrotron radiation.

Slides TUY01 [2.449 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUY01

About •

Received ※ 11 October 2021 — Accepted ※ 13 October 2021 — Issued ※ 23 October 2021

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

TUA02

Current Status of VEPP-5 Injection Complex

positron, injection, controls, electron

37

Yu.I. Maltseva, A.V. Andrianov, K.V. Astrelina, V.V. Balakin, A.M. Barnyakov, A.M. Batrakov, O.V. Belikov, D.E. Berkaev, D. Bolkhovityanov, F.A. Emanov, A.R. Frolov, G.V. Karpov, A.S. Kasaev, A.A. Kondakov, N.Kh. Kot, E.S. Kotov, G.Y. Kurkin, R.M. Lapik, N.N. Lebedev, A.E. Levichev, A.Yu. Martynovsky, P.V. Martyshkin, S.V. Motygin, A.A. Murasev, V. Muslivets, D.A. Nikiforov, A.V. Pavlenko, A.M. Pilan, Yu.A. Rogovsky, S.L. Samoylov, A.G. Tribendis, S. Vasiliev, V.D. Yudin
BINP SB RAS, Novosibirsk, Russia
A.V. Andrianov, V.V. Balakin, F.A. Emanov, E.S. Kotov, A.E. Levichev, Yu.I. Maltseva, D.A. Nikiforov, A.V. Pavlenko, Yu.A. Rogovsky
NSU, Novosibirsk, Russia
A.G. Tribendis
NSTU, Novosibirsk, Russia

VEPP-5 Injection Complex (IC) supplies VEPP-2000 and VEPP-4 colliders at Budker Institute of Nuclear Physics (BINP, Russia) with high energy electron and positron beams. Since 2016 the IC has shown the ability to support operation of both colliders routinely with maximum positron storage rate of 1.7·10¹⁰ e+/s. Stable operation at the energy of 430 MeV has been reached. Research on further improvements on the IC performance is carried out. In particular control system was improved, additional beam diagnostics systems were developed, monitoring of RF system was upgraded. In this paper, the latest achieved IC performance, operational results and prospects are presented.

Slides TUA02 [2.966 MB]

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reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUA02

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Received ※ 28 September 2021 — Revised ※ 01 October 2021 — Accepted ※ 09 October 2021 — Issued ※ 11 October 2021

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TUPSB35

3D Simulation Study and Optimization of Magnetic System of DECRIS Ion Source with the Pumping Frequency 28 GHz

solenoid, sextupole, ECR, ion-source

300

V.M. Amoskov, E.I. Gapionok, V.P. Kukhtin, A.N. Labusov, E.A. Lamzin, A. Makarov, I.Yu. Rodin, A.V. Safonov, N. Shatil, D.B. Stepanov, E.R. Zapretilina
NIIEFA, St. Petersburg, Russia
S.L. Bogomolov, A.A. Efremov
JINR, Dubna, Moscow Region, Russia
S.E. Sytchevsky
Saint Petersburg State University, Saint Petersburg, Russia

A superconducting magnet system for a 28 GHz ECR ion source DECRIS-SC2 was studied in order to select its parameters and optimize performance. Parametric magnetic models were performed for two design configurations, conventional ("sextupole-in-solenoid") and reversed ("solenoid-in-sextupole"). In the "sextupole-in-solenoid" design the racetrack coils of the sextupole magnet used for radial plasma confinement are located inside the solenoids producing the axial field. In the "solenoid-in-sextupole" design the coils arrangement is reversed. For both configurations, electromagnetic effect the booster and the steel poles on the magnet performance was investigated from the point of view critical parameters of the system ¿ currents, fields, and forces. Results of the parametric computations were used to optimize the geometry and sizes of the magnet as well as the magnetic shield, the booster, and the poles. For better reliability and validation of the result, computations were performed with two magnetostatic codes, KOMPOT and KLONDIKE, utilizing the differential and integral formulations, respectively. A comparison of the obtained parameters was used to select the candidate magnet configuration for further design and manufacture.

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reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB35

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Received ※ 28 September 2021 — Revised ※ 29 September 2021 — Accepted ※ 04 October 2021 — Issued ※ 18 October 2021

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TUPSB38

Magnetic System With Variable Characteristics for a 2.45 GHz ECRIS

ECR, plasma, solenoid, ion-source

310

M.S. Dmitriyev, K.G. Artamonov, O.A. Ivanov, M.I. Zhigailova
MEPhI, Moscow, Russia

Particle sources might be considered as an incredibly significant part of the accelerator system. Nowadays high-energy acceleration requires the types of ion sources implemented to produce beams of ions and protons of high energy and intensity. The current study is aimed to con-sider the design of the magnetic system of ECRIS with the operating frequency of 2.45 GHz for producing pro-tons and double-charged helium ions. The numerical simulation of the magnetic system was made by the Finite Element Method. The adjustment of the axial distribution of the magnetic field inside the plasma chamber is realized by shifting the ring magnets. Additional tuning of the axial magnetic field is presented by solenoids introduced for providing the required Binj and Bext adjustment as well as the Bmin control on the axis. For the simplification of the structure the alternating design of the ring magnets with trapezoidal components was considered. Furthermore, the magnetic system allows operating in both single-charged and multiply charged ions generation modes, thus the microwave source mode and the ECR mode are realizable for this configuration. Therefore, the study enables a better understanding of the feasibility of the ECRIS magnetic system with variable characteristics.

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB38

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Received ※ 29 September 2021 — Revised ※ 30 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 19 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, synchrotron

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]

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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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WEPSC06

Asess Input Data Uncertainties in Thermal-Mechanical Calculations of the Outlet Window Membrane of the LUE-200 Accelerator

electron, neutron, simulation, experiment

352

I.V. Burkov
JINR/FLNP, Moscow Region, Russia
A.P. Sumbaev
JINR, Dubna, Moscow Region, Russia

The maximum values of the temperature fields and stress-strain state are calculated for various configurations of the outlet window membrane of the LUE-200 accelera-tor with assessing uncertainties in input data. The ther-momechanical parameters are estimated by simulating the electron beam pulsed action mode on the membrane in the computational models based on the mathematical description of the most significant physical processes. The obtained numerical modelling results demonstrated the importance of assessing uncertainties in input data for substantiating the safe operation limits of IREN facility.

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reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-WEPSC06

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Received ※ 24 September 2021 — Revised ※ 01 October 2021 — Accepted ※ 09 October 2021 — Issued ※ 09 October 2021

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WEPSC12

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

cavity, coupling, storage-ring, synchrotron

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]

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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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WEPSC21

Light Ion Accelerator Magnets

quadrupole, dipole, simulation, power-supply

390

I.A. Yurin, M.S. Dmitriyev, E.N. Indiushnii, S.M. Polozov
MEPhI, Moscow, Russia

At the moment, the National Research Nuclear University (MEPhI) is developing an injector for an accelerator of light ions with an energy of 7.5 MeV / nucleon. The injector uses several tens of quadrupole magnets with a magnetic field gradient of 6-18 T / m and several units of dipole magnets. Key requirements for quadrupole magnets include large aperture, compact transverse dimensions, uniform shape and design, ease of fabrication from a manufacturing standpoint, field accuracy within 0.1%, and low power consumption. This article will describe the requirements, simulation results, and preliminary designs for quadrupole and dipole magnets.

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-WEPSC21

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Received ※ 21 September 2021 — Revised ※ 30 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 15 October 2021

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WEPSC34

Treatment of the Results Measurement of Profile Beam Using Wire Scanners at Accelerator U-70 IHEP

proton, feedback, detector, betatron

410

D.A. Vasiliev, V.T. Baranov, V.A. Kalinin, O.P. Lebedev, A. Lutchev, D.A. Savin
IHEP, Moscow Region, Russia

The IHEP has developed fast wire scanners based on servomotors with a scanning speed of V = 16m/s. For processing of analog signals from detectors, a digital USB oscilloscope NI USB-5133 manufactured by National Instruments has been chosen. The paper describes methods of data processing from a wire scanner using a program developed in the LabVIEW environment and obtaining information about beam parameters as well. To determine the frequency of beam revolution, a fast Fourier transform is used. The measured input signal is integrated at a chosed number of turns of the beam. The amplitude, center position, offset, rms deviation of the resulting distribution and beam sizes at the corresponding energy level are calculated using the Gaussian Peak Fit VI library element. The data of beam profile in different modes of accelerator operation are presented.

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reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-WEPSC34

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Received ※ 06 September 2021 — Revised ※ 07 September 2021 — Accepted ※ 13 September 2021 — Issued ※ 28 September 2021

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WEPSC44

Beam Loss Monitoring System for the SKIF Synchrotron Light Source

storage-ring, simulation, electron, diagnostics

426

Yu.I. Maltseva, A.D. Khilchenko, O.I. Meshkov, A.A. Morsina
BINP SB RAS, Novosibirsk, Russia
S.V. Ivanenko, E.A. Puryga
Budker Institute of Nuclear Physics, Novosibirsk, Russia
X.C. Ma
BINP, Novosibirsk, Russia
Yu.I. Maltseva, O.I. Meshkov
NSU, Novosibirsk, Russia
A.A. Morsina
NSTU, Novosibirsk, Russia

The Siberian ring source of photons (SKIF) is a new 3 GeV fourth-generation synchrotron light source being developed by the Budker Institute of Nuclear Physics (BINP). In order to ensure its reliable operation, beam loss diagnostics system is required. Two types of beam loss monitors will be installed at the SKIF: 5 fiber-based Cherenkov Beam Loss Monitors (CBLM) for the linac and transfer lines and 128 Scintillator-based Beam Loss Monitors (SBLM) for the storage ring. Sophisticated electronic equipment are employed to use these monitors at different SKIF operating modes. The article describes the design of the SKIF beam loss diagnostics system based on numerical simulations and experimental studies.

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reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-WEPSC44

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Received ※ 08 October 2021 — Accepted ※ 09 October 2021 — Issued ※ 18 October 2021

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WEPSC45

Measurement of the Electron Beam Spectrum by the Absorbing Filters Method During a Single Pulse

electron, experiment, gun, high-voltage

430

A.A. Drozdovsky, A.V. Bogdanov, S.A. Drozdovsky, A.V. Kantsyrev, A. Khurchiev, V.A. Panyushkin, S.M. Savin, A.V. Skobliakov, S.A. Visotski, V.A. Volkov
ITEP, Moscow, Russia

Funding: Work supported by R&D Project between NRC "Kurchatov Institute" - ITEP and TRINITI
The interest in measuring spectrum of electron beams by the method of absorbing filters is due to its technical accessibility, compactness, efficiency and usability at various research facilities. The complexity of this method lies in severe ill-posedness of the inverse problem of reconstruction the spectrum from the beam absorption. The task of our work is the operational control of the spectrum of a beam with the maximum energy up to 300 keV. The current collector package consists of 16 insulated identical aluminum foils with the 1 mm gap between. The thickness range of the foils is 10 to 25 microns, depending on the maximum electron energy. The charge of the foils after passing the beam is measured by the ADC. The assembly geometry was calculated by the Monte Carlo method to determine the accumulation of charges on foils when monoenergetic beams are transmitted in the range from 10 to 300 keV with step increment of 10 keV. The inverse problem was solved by Tikhonov regularization. It turned out that a high-accuracy fitting of the input data and the transformation kernel by statistical distributions is the primary factor, which allows to reduce the regularization parameter to almost zero. The validity of the technique applied is confirmed by the fact that the spectrum obtained at the maximum electron energy of the beam of 250 keV is in satisfactory agreement with the spectrum measured on a magnetic spectrometer.

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reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-WEPSC45

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Received ※ 20 September 2021 — Revised ※ 30 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 09 October 2021

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WEPSC56

Beam Parameters Measurement and Control Software Tools for VEPP-5 Injection Complex Damping Ring

damping, injection, software, software-tool

443

V.V. Balakin, D.E. Berkaev, F.A. Emanov
BINP SB RAS, Novosibirsk, Russia

Beam parameters control and operation software tools for BINP VEPP-5 Injection Complex Damping ring consisting of two parts were developed. Beam parameters control includes processing of measured turn-by-turn beam coordinates from all Damping ring beam position monitors and displaying such features as tunes and beam position into vacuum chamber. This part gives an opportunity to measure Damping ring response matrices and carry out its processing too. Beam parameters operation is based on knobs creating. Knob is combination of accelerator control elements, which performs an isolated shift of one selected parameter, e.g. only vertical betatron tune. This part is devoted to their creation and application on Injection Complex VEPP-5. This paper presents review of developed software tools and their application result on VEPP-5 Injection Complex: beam position adjustment via response matrix measurements and quantification the amount of Damping ring captured particles during the injection process depending on beam tunes.

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reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-WEPSC56

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Received ※ 06 September 2021 — Accepted ※ 27 September 2021 — Issued ※ 16 October 2021

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FRB02

Accelerators of ELV Series: Current Status and Further Development

electron, extraction, power-supply, status

111

D.S. Vorobev, E.V. Domarov, S. Fadeev, M. Golkovsky, Yu.I. Golubenko, D.A. Kogut, A.I. Korchagin, N.K. Kuksanov, A. Lavrukhin, P.I. Nemytov, R.A. Salimov, A.V. Semenov
BINP SB RAS, Novosibirsk, Russia

For many years Budker Institute of Nuclear Physics produces medium-energy industrial electron beam accelerators. Flexible (due to the possibility of completing with different systems) and reliable accelerators cover the energy range from 0.3 to 3 MeV, and up to 130 mA of beam current, with power up to 100 kW. High electrical efficiency allows the use of accelerators in almost all areas of radiation technology, from cross-linking of the insulation, heat shrinkable tubes and films to the production of foamed polyethylene and modification of rubber blanks for tires. All models have a unified design with a difference in overall dimensions, the length of the accelerating tube, the number of high-voltage rectifier sections, and the type of extraction device. This makes it easy to adapt the accelerators to the requirements of the technology line. ELV accelerator with an energy range of 0.3-0.5 MeV, beam current up to 130 mA, and power up to 100 kW was successfully designed, tested, and installed on the customer’s site. The accelerator is compact in overall dimensions and installed in the local steel shielding. The electron beam is extracted through a two-windows extraction system with one titanium foil 180 mm wide. New accelerators of the ELV type are also being developed. Namely ELV-15 with energy range up to 3.0 MeV and power up to 100 kW. At present time accelerator was assembled and under testing in Novosibirsk.

Slides FRB02 [5.380 MB]

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reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-FRB02

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Received ※ 26 September 2021 — Accepted ※ 27 September 2021 — Issued ※ 11 October 2021

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FRB04

A Linear Accelerator for Proton Therapy

linac, proton, acceleration, focusing

117

V.V. Paramonov, A.P. Durkin, A. Kolomiets
RAS/INR, Moscow, Russia

For applications in proton therapy, linear accelerators can provide beam performances not achievable with cyclic facilities. The results of the development of a proposal for a linac with the maximal proton energy of 230 MeV are presented. Operating in a pulsed mode, with a repetition rate not less than 50 Hz, the linac is designed to accelerate up to 10¹³ protons per irradiation cycle lasting from 10 to 200 seconds. Possibilities of fast, from pulse to pulse, adjustment of the output energy in the range from 60 MeV to 230 MeV, formation and acceleration to the output energy of a "pencil-like" beam with a diameter of ~ 2 mm are shown. Optimized solutions, proposed for both the accelerating-focusing channel and the technical systems of the linac make it possible to create a facility with high both target and technical and economic features. Special attention, due to the selection of proven in long-term operation parameters of the systems, is paid to ensuring the reliability of the linac operation. The feasibility of linac is substantiated on the basis of mastered or modified with a guarantee industrial equipment.

Slides FRB04 [5.370 MB]

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reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-FRB04

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Received ※ 16 September 2021 — Revised ※ 30 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 13 October 2021

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