COOL2019 - List of Authors (Reva, V.B.)

Paper	Title	Page
MOX01	COSY Experience of Electron Cooling	1
	V.B. Reva, M.I. Bryzgunov, V.V. Parkhomchuk BINP SB RAS, Novosibirsk, Russia A.J. Halama, V. Kamerdzhiev, P.J. Niedermayer FZJ, Jülich, Germany
	The 2 MeV electron cooling system for COSY-Julich has highest energy for the electron cooler with strong longitudinal magnetic field. During operation the cooling process was detailed investigated at 908 keV energy of electron beam. The proton beam was cooled at different regimes: RF, barrier bucket RF, cluster target and stochastic cooling. This article deals with the experience of electron cooling at high energy.
	Slides MOX01 [3.053 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-COOL2019-MOX01
About •	paper received ※ 12 September 2019 paper accepted ※ 18 October 2019 issue date ※ 01 November 2019
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

MOA02	Design of a Compact Electron Gun for the High-Voltage Electron Cooling System of the NICA Collider	18
	A.P. Denisov, M.I. Bryzgunov, A.V. Bubley, A.V. Ivanov, V.V. Parkhomchuk, A.A. Putmakov, V.B. Reva BINP SB RAS, Novosibirsk, Russia
	The low temperature of the electron beam is the key for the high efficiency of the electron cooling, and the strong guiding magnetic field is the means for it. However, high-voltage electron cooling systems come with the challenge of providing the low-temperature beams, as the guiding magnetic field is limited. The electron gun design for the NICA collider cooling systems combines the utilizing the magnetic field and the electrical field constructing, by using the electrodes of special shapes.
	Slides MOA02 [9.705 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-COOL2019-MOA02
About •	paper received ※ 09 October 2019 paper accepted ※ 18 October 2019 issue date ※ 01 November 2019
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TUX01	Status of the Electron Cooler for NICA Booster and Results of its Commissioning	22
	M.I. Bryzgunov, E.A. Bekhtenev, A.V. Bubley, V.A. Chekavinskiy, A.P. Denisov, A.D. Goncharov, I.A. Gusev, G.V. Karpov, M.N. Kondaurov, N.S. Kremnev, V.M. Panasyuk, V.V. Parkhomchuk, V.A. Polukhin, A.A. Putmakov, V.B. Reva, D.V. Senkov, A.A. Zharikov BINP SB RAS, Novosibirsk, Russia A.G. Kobets, S.A. Melnikov, I.N. Meshkov, O. Orlov, S.V. Semenov, A.S. Sergeev, A.A. Sidorin, A.V. Smirnov JINR, Dubna, Moscow Region, Russia V.B. Reva NSU, Novosibirsk, Russia
	The electron cooling system of the NICA booster is intended for accumulation of the ion beam at the injection energy and for cooling at some intermediate energy value before acceleration to the extraction energy. The system was produced in BINP (Novosibirsk, Russia) and commissioned in the JINR (Dubna, Russia) in 2019. The current status of the electron cooler and the results of its tests are presented in the article.
	Slides TUX01 [12.559 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-COOL2019-TUX01
About •	paper received ※ 09 October 2019 paper accepted ※ 18 October 2019 issue date ※ 01 November 2019
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THX01	The Status of the Electron Cooling System for the NICA Collider	55
	V.V. Parkhomchuk, M.I. Bryzgunov, A.V. Bubley, A.P. Denisov, A.D. Goncharov, N.S. Kremnev, V.M. Panasyuk, A.A. Putmakov, V.B. Reva, S.V. Shiyankov BINP SB RAS, Novosibirsk, Russia V.B. Reva NSU, Novosibirsk, Russia
	New electron cooling system is designed to cool two heavy ion beams propagating in opposite directions at a distance about 30 cm from each other. Engineering solutions for its basic elements are presented. The measurements of the electron cooler magnetic system and the influence of the adjacent solenoids in the cooling section on the resulting magnetic field are described. The potential opportunities to improve parameters of the experiments with ion beams using the electron cooling system are discussed.
	Slides THX01 [20.679 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-COOL2019-THX01
About •	paper received ※ 04 October 2019 paper accepted ※ 18 October 2019 issue date ※ 01 November 2019
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THB02	Simulation of Electron-Optical Systems of Electron Coolers	68
	A.V. Ivanov, M.I. Bryzgunov, V.M. Panasyuk, V.V. Parkhomchuk, V.B. Reva BINP SB RAS, Novosibirsk, Russia
	To provide successful operation of electron coolers one need thorough simulation and development of electron-optical system. In this paper simulations of electron gun, accelerating structure and collector are discoursed. Particular attention is paid to obtaining high perveance electron beam with a small transversal temperature and controlled profile, and collector with low flux of secondary electrons. Bends of electron beam are also considered. Main program for simulations is SAM code. This code is based on boundary integral method, its main advantage is precision and speed of calculations.
	Slides THB02 [11.821 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-COOL2019-THB02
About •	paper received ※ 05 October 2019 paper accepted ※ 18 October 2019 issue date ※ 01 November 2019
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FRX01	Recent Developments and Experimental Results From Electron Cooling of a 2.4 GeV/c Proton Beam at COSY	72
	P.J. Niedermayer, A.J. Halama, V. Kamerdzhiev, N. Shurkhno, R. Stassen FZJ, Jülich, Germany T. Katayama Nihon University, Narashino, Chiba, Japan V.B. Reva BINP SB RAS, Novosibirsk, Russia
	The COSY control system as well as other subsystems are being upgraded. The 2 MeV electron cooler was recently extended with the EPICS control system and thereby integrated into the control and data acquisition system of the Cooler Synchrotron COSY. Taking advantages of the new software capabilities, studies of transverse and longitudinal magnetized electron cooling of a proton beam at 2.4 GeV/c were carried out. Electron and stochastic cooling were combined to reduce the cooling time while achieving lowest possible emittance and momentum spread. Results from experiments are discussed including cooling dynamics during operation of an internal cluster-jet target designed for the PANDA experiment at HESR. We present the results of probing the electron velocity distribution by means of the strongly cooled beam itself. The shape of the measured distibution may be caused by the galloping/scalloping effects within the electron beam. This effect plays a significant role in the strong dependence of the longitudinal and transverse electron cooling process on the proton beam size. Also discussed are the technical developments, achievements and further plans regarding the control system upgrade.
	Slides FRX01 [4.424 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-COOL2019-FRX01
About •	paper received ※ 21 September 2019 paper accepted ※ 18 October 2019 issue date ※ 01 November 2019
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TUPS03	Vacuum Systems for the Coolers of the NICA Project	80
	A.V. Bubley, A. Bainazarova, M.I. Bryzgunov, N.S. Kremnev, V.V. Parkhomchuk, A.A. Putmakov, V.B. Reva BINP SB RAS, Novosibirsk, Russia
	The NICA accelerator complex contains two electron coolers, one sits at booster and another at NICA collider. They have requirements for the vacuum of 10^-11 mbar. Despite the coolers have different design the problems of getting vacuum are similar, lack of space along vacuum chambers, presence of the electron beam and oxide cathode usage. The solutions for achieving such a strict requirements are discussed in the article.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-COOL2019-TUPS03
About •	paper received ※ 04 October 2019 paper accepted ※ 18 October 2019 issue date ※ 01 November 2019
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TUPS05	The High Voltage Power Supply System for Electron Cooler for CSRe	86
	D.N. Skorobogatov, M.I. Bryzgunov, M.N. Kondaurov, A.A. Putmakov, V.V. Repkov, V.B. Reva BINP SB RAS, Novosibirsk, Russia
	The high-voltage power supply system for upgrade of the electron cooling system of CSRE ring in the IMP, was developed at the BINP in 2014 - 2019. The main features are - maximum voltage is 300 kV, stability - 10ppm, with the ability of quick changing of voltage in range ±10% of nominal voltage for a time not more than 500 us. The key points of this design are presented in this article.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-COOL2019-TUPS05
About •	paper received ※ 10 October 2019 paper accepted ※ 18 October 2019 issue date ※ 01 November 2019
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TUPS08	Beam Position Monitor System for High Voltage Electron Cooler for NICA Collider	96
	G.V. Karpov, E.A. Bekhtenev, V.B. Reva BINP SB RAS, Novosibirsk, Russia E.A. Bekhtenev, V.B. Reva NSU, Novosibirsk, Russia
	The high voltage (2.5 MV) electron cooler for NICA collider is now designing in BINP. Beam position monitor (BPM) system for orbit measurements has been developed at BINP. The system contains 16 BPMs inside the cooling sections, 4 BPMs inside the high voltage vessels and 22 BPMs in transport channels. Continuous electron beam is modulated with 10 MHz sinusoidal signal for capability to get signals from pickup electrodes. The beam current modulation can be varied in the range of 0.3 - 5 mA. The modulation signal may be supplied to each sector of the control electrode. So, the position of one quadrant sector of the electron beam can be measured by BPM system. Comparing the positions of each sectors from BPM to BPM it is possible to analyse the shape of the electron beam in the transport channel and cooling section. The BPMs inside the cooling section can measure both electron and ion beams. It is achieved by means of switching the reference signals inside the BPM electronics. The prototypes of new BPM electronics have been fabricated and tested. The BPM electronics provides highly precise beam position measurements. Position measurement error doesn’t exceed a few micron. Design features of the BPM system, its parameters and testing results are presented in this paper.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-COOL2019-TUPS08
About •	paper received ※ 27 September 2019 paper accepted ※ 21 October 2019 issue date ※ 01 November 2019
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TUPS10	Power Supplies for Correctors of the 2.5 MeV Electron Cooling System for the NICA Collider	102
	O.V. Belikov, M.I. Bryzgunov, V.R. Kozak, V.V. Parkhomchuk, V.B. Reva, D.S. Vinnik BINP SB RAS, Novosibirsk, Russia
	Power supply system for corrector magnets of NICA electron cooling system includes different power supply sources. 112 bipolar power supply sources provide a maximal current 6 A and maximal voltage from 24 V to 140 V. 32 bipolar power supply sources provide maximal current 20 A and maximal voltage 50 V. Additionally the system includes 16 power supply sources with a maximal current 20 A for active correction of current in the main magnets by connecting power supplies to the magnet windings in parallel. The paper will present the description and parameters of power supply system.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-COOL2019-TUPS10
About •	paper received ※ 01 October 2019 paper accepted ※ 21 October 2019 issue date ※ 01 November 2019
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TUPS13	The Cascade Transformer for the High-Voltage Electron Cooling System for the NICA Collider	105
	A.P. Denisov, M.I. Bryzgunov, A.D. Goncharov, V.V. Parkhomchuk, V.B. Reva, D.N. Skorobogatov BINP SB RAS, Novosibirsk, Russia
	The 2.5 MeV electron cooling system for the NICA collider (JINR, Dubna) will use cascade transformers for distributing the power among the sections of the high-voltage column and for transferring power to the high-voltage terminal. The design of the cascade transformer and the measurements of its prototype are described.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-COOL2019-TUPS13
About •	paper received ※ 09 October 2019 paper accepted ※ 21 October 2019 issue date ※ 01 November 2019
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TUPS14	Electron Cooling Application for Hadron Therapy	108
	V.A. Vostrikov, V.V. Parkhomchuk, V.B. Reva BINP SB RAS, Novosibirsk, Russia V.B. Reva, V.A. Vostrikov NSU, Novosibirsk, Russia
	The project of synchrotron for hadron therapy with electron cooling is developing in Budker Institute of Nuclear Physics. The main goal of project is design of the effective and low cost hadron therapy facility. The electron cooling is applied for ion beam accumullation, cooling and preparation for the slow extraction. The high quality cold ion beam with an extreme small emittance and energy spread allows significantly decrease the synchrotron and beam transfer lines apertures. Moreover, the cooling can be applied for accumulation of short lived radioactive izotopes which can be used for online visualization of treatment.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-COOL2019-TUPS14
About •	paper received ※ 11 October 2019 paper accepted ※ 21 October 2019 issue date ※ 01 November 2019
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TUPS15	The Magnetic System of Electron Coolers of Collider NICA	112
	V.M. Panasyuk, M.I. Bryzgunov, A.V. Bubley, V.M. Konstantinov, V.Ya. Korchagin, N.S. Kremnev, V.V. Parkhomchuk, S. Pospolita, V.B. Reva, S.I. Ruvinsky BINP SB RAS, Novosibirsk, Russia
	The complex of electron cooling is created in the BINP SB RAS. Complex is duplex of electron coolers. According to technical specifications total power consumption of the complex should not exceed 500 kW, electron energy from 0.2 to 2.5 MeV, magnetic field in solenoids of cooling up to 2kG, and distance between the centers of solenoids should be 320mm. In general, the layout of this complex is similar to the layout of the cooler created in BINP for COSY, but its production due to the above specifications is much more complicated.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-COOL2019-TUPS15
About •	paper received ※ 04 October 2019 paper accepted ※ 21 October 2019 issue date ※ 01 November 2019
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TUPS21	Adjusting Unit of Longitudinal Field Coils for NICA HV Electron Cooler’s Solenoid	127
	N.S. Kremnev, M.I. Bryzgunov, A.V. Bubley, V.M. Panasyuk, V.V. Parkhomchuk, A.A. Putmakov, V.B. Reva, S.V. Shiyankov BINP SB RAS, Novosibirsk, Russia V.B. Reva NSU, Novosibirsk, Russia
	Adjusting unit of longitudinal field coils is necessary element used to obtaining a rectilinear longitudinal field in cooling solenoids of electron cooling machines. Due to limited distance between cooling channels of HV electron cooler for NICA collider, previously used adjusting unit for longitudinal coil couldn’t been applied. Possible orientation of adjusting unit is 90 degrees rotated and gravity force could not preload longitudinal field coil mounting to make adjusting unit working. New design of preloaded coil mounting unit, made by BINP, solves this problem and provides necessary adjusting range and adjusting precision of longitudinal field coils for NICA HV electron cooler’s solenoid.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-COOL2019-TUPS21
About •	paper received ※ 11 October 2019 paper accepted ※ 21 October 2019 issue date ※ 01 November 2019
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Paper

Title

Page

COSY Experience of Electron Cooling

1

V.B. Reva, M.I. Bryzgunov, V.V. Parkhomchuk
BINP SB RAS, Novosibirsk, Russia
A.J. Halama, V. Kamerdzhiev, P.J. Niedermayer
FZJ, Jülich, Germany

The 2 MeV electron cooling system for COSY-Julich has highest energy for the electron cooler with strong longitudinal magnetic field. During operation the cooling process was detailed investigated at 908 keV energy of electron beam. The proton beam was cooled at different regimes: RF, barrier bucket RF, cluster target and stochastic cooling. This article deals with the experience of electron cooling at high energy.

Slides MOX01 [3.053 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-COOL2019-MOX01

About •

paper received ※ 12 September 2019 paper accepted ※ 18 October 2019 issue date ※ 01 November 2019

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MOA02

Design of a Compact Electron Gun for the High-Voltage Electron Cooling System of the NICA Collider

18

A.P. Denisov, M.I. Bryzgunov, A.V. Bubley, A.V. Ivanov, V.V. Parkhomchuk, A.A. Putmakov, V.B. Reva
BINP SB RAS, Novosibirsk, Russia

The low temperature of the electron beam is the key for the high efficiency of the electron cooling, and the strong guiding magnetic field is the means for it. However, high-voltage electron cooling systems come with the challenge of providing the low-temperature beams, as the guiding magnetic field is limited. The electron gun design for the NICA collider cooling systems combines the utilizing the magnetic field and the electrical field constructing, by using the electrodes of special shapes.

Slides MOA02 [9.705 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-COOL2019-MOA02

About •

paper received ※ 09 October 2019 paper accepted ※ 18 October 2019 issue date ※ 01 November 2019

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TUX01

Status of the Electron Cooler for NICA Booster and Results of its Commissioning

22

M.I. Bryzgunov, E.A. Bekhtenev, A.V. Bubley, V.A. Chekavinskiy, A.P. Denisov, A.D. Goncharov, I.A. Gusev, G.V. Karpov, M.N. Kondaurov, N.S. Kremnev, V.M. Panasyuk, V.V. Parkhomchuk, V.A. Polukhin, A.A. Putmakov, V.B. Reva, D.V. Senkov, A.A. Zharikov
BINP SB RAS, Novosibirsk, Russia
A.G. Kobets, S.A. Melnikov, I.N. Meshkov, O. Orlov, S.V. Semenov, A.S. Sergeev, A.A. Sidorin, A.V. Smirnov
JINR, Dubna, Moscow Region, Russia
V.B. Reva
NSU, Novosibirsk, Russia

The electron cooling system of the NICA booster is intended for accumulation of the ion beam at the injection energy and for cooling at some intermediate energy value before acceleration to the extraction energy. The system was produced in BINP (Novosibirsk, Russia) and commissioned in the JINR (Dubna, Russia) in 2019. The current status of the electron cooler and the results of its tests are presented in the article.

Slides TUX01 [12.559 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-COOL2019-TUX01

About •

paper received ※ 09 October 2019 paper accepted ※ 18 October 2019 issue date ※ 01 November 2019

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THX01

The Status of the Electron Cooling System for the NICA Collider

55

V.V. Parkhomchuk, M.I. Bryzgunov, A.V. Bubley, A.P. Denisov, A.D. Goncharov, N.S. Kremnev, V.M. Panasyuk, A.A. Putmakov, V.B. Reva, S.V. Shiyankov
BINP SB RAS, Novosibirsk, Russia
V.B. Reva
NSU, Novosibirsk, Russia

New electron cooling system is designed to cool two heavy ion beams propagating in opposite directions at a distance about 30 cm from each other. Engineering solutions for its basic elements are presented. The measurements of the electron cooler magnetic system and the influence of the adjacent solenoids in the cooling section on the resulting magnetic field are described. The potential opportunities to improve parameters of the experiments with ion beams using the electron cooling system are discussed.

Slides THX01 [20.679 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-COOL2019-THX01

About •

paper received ※ 04 October 2019 paper accepted ※ 18 October 2019 issue date ※ 01 November 2019

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THB02

Simulation of Electron-Optical Systems of Electron Coolers

68

A.V. Ivanov, M.I. Bryzgunov, V.M. Panasyuk, V.V. Parkhomchuk, V.B. Reva
BINP SB RAS, Novosibirsk, Russia

To provide successful operation of electron coolers one need thorough simulation and development of electron-optical system. In this paper simulations of electron gun, accelerating structure and collector are discoursed. Particular attention is paid to obtaining high perveance electron beam with a small transversal temperature and controlled profile, and collector with low flux of secondary electrons. Bends of electron beam are also considered. Main program for simulations is SAM code. This code is based on boundary integral method, its main advantage is precision and speed of calculations.

Slides THB02 [11.821 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-COOL2019-THB02

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paper received ※ 05 October 2019 paper accepted ※ 18 October 2019 issue date ※ 01 November 2019

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FRX01

Recent Developments and Experimental Results From Electron Cooling of a 2.4 GeV/c Proton Beam at COSY

72

P.J. Niedermayer, A.J. Halama, V. Kamerdzhiev, N. Shurkhno, R. Stassen
FZJ, Jülich, Germany
T. Katayama
Nihon University, Narashino, Chiba, Japan
V.B. Reva
BINP SB RAS, Novosibirsk, Russia

The COSY control system as well as other subsystems are being upgraded. The 2 MeV electron cooler was recently extended with the EPICS control system and thereby integrated into the control and data acquisition system of the Cooler Synchrotron COSY. Taking advantages of the new software capabilities, studies of transverse and longitudinal magnetized electron cooling of a proton beam at 2.4 GeV/c were carried out. Electron and stochastic cooling were combined to reduce the cooling time while achieving lowest possible emittance and momentum spread. Results from experiments are discussed including cooling dynamics during operation of an internal cluster-jet target designed for the PANDA experiment at HESR. We present the results of probing the electron velocity distribution by means of the strongly cooled beam itself. The shape of the measured distibution may be caused by the galloping/scalloping effects within the electron beam. This effect plays a significant role in the strong dependence of the longitudinal and transverse electron cooling process on the proton beam size. Also discussed are the technical developments, achievements and further plans regarding the control system upgrade.

Slides FRX01 [4.424 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-COOL2019-FRX01

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paper received ※ 21 September 2019 paper accepted ※ 18 October 2019 issue date ※ 01 November 2019

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TUPS03

Vacuum Systems for the Coolers of the NICA Project

80

A.V. Bubley, A. Bainazarova, M.I. Bryzgunov, N.S. Kremnev, V.V. Parkhomchuk, A.A. Putmakov, V.B. Reva
BINP SB RAS, Novosibirsk, Russia

The NICA accelerator complex contains two electron coolers, one sits at booster and another at NICA collider. They have requirements for the vacuum of 10^-11 mbar. Despite the coolers have different design the problems of getting vacuum are similar, lack of space along vacuum chambers, presence of the electron beam and oxide cathode usage. The solutions for achieving such a strict requirements are discussed in the article.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-COOL2019-TUPS03

About •

paper received ※ 04 October 2019 paper accepted ※ 18 October 2019 issue date ※ 01 November 2019

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TUPS05

The High Voltage Power Supply System for Electron Cooler for CSRe

86

D.N. Skorobogatov, M.I. Bryzgunov, M.N. Kondaurov, A.A. Putmakov, V.V. Repkov, V.B. Reva
BINP SB RAS, Novosibirsk, Russia

The high-voltage power supply system for upgrade of the electron cooling system of CSRE ring in the IMP, was developed at the BINP in 2014 - 2019. The main features are - maximum voltage is 300 kV, stability - 10ppm, with the ability of quick changing of voltage in range ±10% of nominal voltage for a time not more than 500 us. The key points of this design are presented in this article.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-COOL2019-TUPS05

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paper received ※ 10 October 2019 paper accepted ※ 18 October 2019 issue date ※ 01 November 2019

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TUPS08

Beam Position Monitor System for High Voltage Electron Cooler for NICA Collider

96

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

The high voltage (2.5 MV) electron cooler for NICA collider is now designing in BINP. Beam position monitor (BPM) system for orbit measurements has been developed at BINP. The system contains 16 BPMs inside the cooling sections, 4 BPMs inside the high voltage vessels and 22 BPMs in transport channels. Continuous electron beam is modulated with 10 MHz sinusoidal signal for capability to get signals from pickup electrodes. The beam current modulation can be varied in the range of 0.3 - 5 mA. The modulation signal may be supplied to each sector of the control electrode. So, the position of one quadrant sector of the electron beam can be measured by BPM system. Comparing the positions of each sectors from BPM to BPM it is possible to analyse the shape of the electron beam in the transport channel and cooling section. The BPMs inside the cooling section can measure both electron and ion beams. It is achieved by means of switching the reference signals inside the BPM electronics. The prototypes of new BPM electronics have been fabricated and tested. The BPM electronics provides highly precise beam position measurements. Position measurement error doesn’t exceed a few micron. Design features of the BPM system, its parameters and testing results are presented in this paper.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-COOL2019-TUPS08

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paper received ※ 27 September 2019 paper accepted ※ 21 October 2019 issue date ※ 01 November 2019

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TUPS10

Power Supplies for Correctors of the 2.5 MeV Electron Cooling System for the NICA Collider

102

O.V. Belikov, M.I. Bryzgunov, V.R. Kozak, V.V. Parkhomchuk, V.B. Reva, D.S. Vinnik
BINP SB RAS, Novosibirsk, Russia

Power supply system for corrector magnets of NICA electron cooling system includes different power supply sources. 112 bipolar power supply sources provide a maximal current 6 A and maximal voltage from 24 V to 140 V. 32 bipolar power supply sources provide maximal current 20 A and maximal voltage 50 V. Additionally the system includes 16 power supply sources with a maximal current 20 A for active correction of current in the main magnets by connecting power supplies to the magnet windings in parallel. The paper will present the description and parameters of power supply system.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-COOL2019-TUPS10

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paper received ※ 01 October 2019 paper accepted ※ 21 October 2019 issue date ※ 01 November 2019

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TUPS13

The Cascade Transformer for the High-Voltage Electron Cooling System for the NICA Collider

105

A.P. Denisov, M.I. Bryzgunov, A.D. Goncharov, V.V. Parkhomchuk, V.B. Reva, D.N. Skorobogatov
BINP SB RAS, Novosibirsk, Russia

The 2.5 MeV electron cooling system for the NICA collider (JINR, Dubna) will use cascade transformers for distributing the power among the sections of the high-voltage column and for transferring power to the high-voltage terminal. The design of the cascade transformer and the measurements of its prototype are described.

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reference for this paper ※ https://doi.org/10.18429/JACoW-COOL2019-TUPS13

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paper received ※ 09 October 2019 paper accepted ※ 21 October 2019 issue date ※ 01 November 2019

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TUPS14

Electron Cooling Application for Hadron Therapy

108

V.A. Vostrikov, V.V. Parkhomchuk, V.B. Reva
BINP SB RAS, Novosibirsk, Russia
V.B. Reva, V.A. Vostrikov
NSU, Novosibirsk, Russia

The project of synchrotron for hadron therapy with electron cooling is developing in Budker Institute of Nuclear Physics. The main goal of project is design of the effective and low cost hadron therapy facility. The electron cooling is applied for ion beam accumullation, cooling and preparation for the slow extraction. The high quality cold ion beam with an extreme small emittance and energy spread allows significantly decrease the synchrotron and beam transfer lines apertures. Moreover, the cooling can be applied for accumulation of short lived radioactive izotopes which can be used for online visualization of treatment.

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reference for this paper ※ https://doi.org/10.18429/JACoW-COOL2019-TUPS14

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paper received ※ 11 October 2019 paper accepted ※ 21 October 2019 issue date ※ 01 November 2019

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TUPS15

The Magnetic System of Electron Coolers of Collider NICA

112

V.M. Panasyuk, M.I. Bryzgunov, A.V. Bubley, V.M. Konstantinov, V.Ya. Korchagin, N.S. Kremnev, V.V. Parkhomchuk, S. Pospolita, V.B. Reva, S.I. Ruvinsky
BINP SB RAS, Novosibirsk, Russia

The complex of electron cooling is created in the BINP SB RAS. Complex is duplex of electron coolers. According to technical specifications total power consumption of the complex should not exceed 500 kW, electron energy from 0.2 to 2.5 MeV, magnetic field in solenoids of cooling up to 2kG, and distance between the centers of solenoids should be 320mm. In general, the layout of this complex is similar to the layout of the cooler created in BINP for COSY, but its production due to the above specifications is much more complicated.

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reference for this paper ※ https://doi.org/10.18429/JACoW-COOL2019-TUPS15

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paper received ※ 04 October 2019 paper accepted ※ 21 October 2019 issue date ※ 01 November 2019

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TUPS21

Adjusting Unit of Longitudinal Field Coils for NICA HV Electron Cooler’s Solenoid

127

N.S. Kremnev, M.I. Bryzgunov, A.V. Bubley, V.M. Panasyuk, V.V. Parkhomchuk, A.A. Putmakov, V.B. Reva, S.V. Shiyankov
BINP SB RAS, Novosibirsk, Russia
V.B. Reva
NSU, Novosibirsk, Russia

Adjusting unit of longitudinal field coils is necessary element used to obtaining a rectilinear longitudinal field in cooling solenoids of electron cooling machines. Due to limited distance between cooling channels of HV electron cooler for NICA collider, previously used adjusting unit for longitudinal coil couldn’t been applied. Possible orientation of adjusting unit is 90 degrees rotated and gravity force could not preload longitudinal field coil mounting to make adjusting unit working. New design of preloaded coil mounting unit, made by BINP, solves this problem and provides necessary adjusting range and adjusting precision of longitudinal field coils for NICA HV electron cooler’s solenoid.

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reference for this paper ※ https://doi.org/10.18429/JACoW-COOL2019-TUPS21

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paper received ※ 11 October 2019 paper accepted ※ 21 October 2019 issue date ※ 01 November 2019

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