COOL2013 - List of Authors (Parkhomchuk, V.V.)

Paper

Title

Page

Novel Ideas in Electron Cooling

55

V.V. Parkhomchuk
BINP SB RAS, Novosibirsk, Russia

The development of electron cooling started in 1966 from a proposal by G.I. Budker who used this system for proton-proton colliders. Now the electron cooling used for many ions accelerators for shrinking ion beam emittance and for accumulation rare ions beam at very broad energy range. Many ideas was used for improved the cooling power and many problems was opened. The new ideas for extended the energy of cooled beam will discuss at the report. The energy of cooler up to 8 GeV still required for HESR for suppress the scattering antiproton in inner target. The experience obtain at time of the commissioning 2 MeV cooler for COSY are used. These results are practical test bench for estimation different solutions for the cooling systems.

Slides TUAM2HA01 [2.898 MB]

TUPM2HA01

Commissioning COSY Cooler with Electron Beam at Novosibirsk

79

V.B. Reva, N. Alinovskiy, T.V. Bedareva, E.A. Bekhtenev, O.V. Belikov, V.N. Bocharov, V.V. Borodich, M.I. Bryzgunov, A.V. Bubley, V.A. Chekavinskiy, V.G. Cheskidov, B.A. Dovzhenko, A.I. Erokhin, M.G. Fedotov, A.D. Goncharov, K. Gorchakov, V.K. Gosteev, I.A. Gusev, A.A. Ivanov, G.V. Karpov, Y.I. Koisin, M.N. Kondaurov, V.R. Kozak, A.M. Kruchkov, A.D. Lisitsyn, I.A. Lopatkin, V.R. Mamkin, A.S. Medvedko, V.M. Panasyuk, V.V. Parkhomchuk, I.V. Poletaev, V.A. Polukhin, A.Yu. Protopopov, D.N. Pureskin, A.A. Putmakov, P.A. Selivanov, E.P. Semenov, D.V. Senkov, D.N. Skorobogatov, N.P. Zapiatkin
BINP SB RAS, Novosibirsk, Russia

The electron cooler of a 2 MEV for COSY storage ring FZJ is assembled in BINP. Results of experiments with high voltage, with electron beam, cascade transformer for distribution power along acceleration tube will be discussed in this report. The COSY cooler is designed on the classic scheme of low energy coolers like cooler CSRm, CSRe, LEIR that was produced in BINP before. The electron beam is transported inside the longitudinal magnetic field along whole trajectory from an electron gun to a collector. This optic scheme is stimulated by the wide range of the working energies 0.025–2 MeV. The electrostatic accelerator consists of 33 individual unify section. Each section contains two HV power supply (±30 kV) and power supply of the magnetic coils. The electrical power to each section is provided by the cascade transformer. The cascade transformer is the set of the transformers connected in series with isolating winding.

Slides TUPM2HA01 [3.228 MB]

TUPM2HA02

Commissioning of the 2 MeV COSY Electron Cooler in Jülich

V. Kamerdzhiev, L.J. Mao
FZJ, Jülich, Germany
J. Dietrich
DELTA, Dortmund, Germany
J. Dietrich
HIM, Mainz, Germany
L.J. Mao
IMP, Lanzhou, People's Republic of China
V.V. Parkhomchuk, V.B. Reva
BINP SB RAS, Novosibirsk, Russia

The construction of the 2 MeV electron cooler at BINP has been completed. After initial testing, the cooler was shipped to Jülich. The installation in COSY is scheduled to begin in April 2013. The report covers the installation and commissioning progress in Jülich. The history of the project is briefly touched on.

Slides TUPM2HA02 [4.490 MB]

WEPPO04

Collector for Electron Cooling Systems with Suppression of Reflected Electron Flux

103

M.I. Bryzgunov, A.V. Bubley, V.A. Chekavinskiy, I.A. Gusev, A.V. Ivanov, M.N. Kondaurov, V.M. Panasyuk, V.V. Parkhomchuk, D.N. Pureskin, A.A. Putmakov, V.B. Reva, D.V. Senkov, D.N. Skorobogatov
BINP SB RAS, Novosibirsk, Russia

Results of testing of the collector with Wien filter in the 2 MeV electron cooling system for COSY synchrotron are presented. Efficiency of a collector in high voltage electron cooling devices is important from the point of view of the load on high voltage power supply, radiation safety and vacuum conditions in the system. The collector for 2 MeV COSY cooler is supplemented with Wien filter which allows increase efficiency of the system by deflection secondary electron flux in crossed transverse electric and magnetic fields. Results of tests show that such solution provides efficiency of recuperation in the cooler up to 10^-5. After tests some changes were made in the construction of the Wien filter to improve quality of the collector performance.

WEPPO07

Matching of Magnetic Field with Energy of Electrons in 2 MeV COSY Cooler

110

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

In the high energy electron cooler for COSY the beam energy range is wide (24 keV- 2 MeV). Typical guiding magnetic fields are 0.5 kG in accelerating tube, 1kG in transport channels and 2 kG in cooling solenoid and adjoining 45 degree toroids. As a result we have two sections with longitudinal gradient of field, three 90 degree bends and 45 degree toroid before solenoid entrance. In such circumstances the conditions of passage of electrons through the channel and theirs entrance into solenoid without heating are discussed. Also the results of using of correctors and pick-up system are considered.

WEPPO08

Electron Cooler for the NICA Collider

113

S. Yakovenko, E.V. Ahmanova, A.G. Kobets, I.N. Meshkov, R.V. Pivin, A.Yu. Rudakov, A.V. Shabunov, A.V. Smirnov, N.D. Topilin, Yu.A. Tumanova
JINR, Dubna, Moscow Region, Russia
A.A. Filippov
Allrussian Electrotechnical Institute, Moskow, Russia
A.V. Ivanov, V.V. Parkhomchuk
BINP SB RAS, Novosibirsk, Russia

The goal of the cooling system of the NICA collider is to meet the required parameters of ion beams in energy range of 1–4.5GeV/u that corresponds to the 0.5–2.5 of the electron MeV. The electron cooler is developed according to the available world practice of manufacturing of similar systems. The main peculiarity of the electron cooler for the NICA collider is use of two cooling electron beams (one electron beam per each ring of the collider) that never has been done. The acceleration and deceleration of the electron beams is produced by common high-voltage generator. The cooler consist of three tanks. Two of them contain acceleration/deceleration tubes and are immersed in superconducting solenoids. The third one contains HV generator. The scheme of the electron cooler, its main parameters and operation regime are presented.

Poster WEPPO08 [0.443 MB]

WEPPO12

Compass for Measuring the Magnetic Lines Straightness at the Cooling Section in Vacuum

121

A.V. Bubley, M.I. Bryzgunov, V.G. Cheskidov, M.G. Fedotov, V.K. Gosteev, O.I. Meshkov, V.M. Panasyuk, V.V. Parkhomchuk, V.B. Reva
BINP SB RAS, Novosibirsk, Russia
V. Kamerdzhiev, G. Langenberg
FZJ, Jülich, Germany

The 2 MeV cooler is under construction at COSY synchrotron. Due to high energy it is very strict requirement for the magnetic field homogeneity at the cooling solenoid. Since the magnetic field has to be adjusted during the accelerator operation, the measurement system is installed inside vacuum chamber. The design and features of this system are described in the article, as well as preliminary results are discussed.

Paper	Title	Page
TUAM2HA01	Novel Ideas in Electron Cooling	55
	V.V. Parkhomchuk BINP SB RAS, Novosibirsk, Russia
	The development of electron cooling started in 1966 from a proposal by G.I. Budker who used this system for proton-proton colliders. Now the electron cooling used for many ions accelerators for shrinking ion beam emittance and for accumulation rare ions beam at very broad energy range. Many ideas was used for improved the cooling power and many problems was opened. The new ideas for extended the energy of cooled beam will discuss at the report. The energy of cooler up to 8 GeV still required for HESR for suppress the scattering antiproton in inner target. The experience obtain at time of the commissioning 2 MeV cooler for COSY are used. These results are practical test bench for estimation different solutions for the cooling systems.
	Slides TUAM2HA01 [2.898 MB]

TUPM2HA01	Commissioning COSY Cooler with Electron Beam at Novosibirsk	79
	V.B. Reva, N. Alinovskiy, T.V. Bedareva, E.A. Bekhtenev, O.V. Belikov, V.N. Bocharov, V.V. Borodich, M.I. Bryzgunov, A.V. Bubley, V.A. Chekavinskiy, V.G. Cheskidov, B.A. Dovzhenko, A.I. Erokhin, M.G. Fedotov, A.D. Goncharov, K. Gorchakov, V.K. Gosteev, I.A. Gusev, A.A. Ivanov, G.V. Karpov, Y.I. Koisin, M.N. Kondaurov, V.R. Kozak, A.M. Kruchkov, A.D. Lisitsyn, I.A. Lopatkin, V.R. Mamkin, A.S. Medvedko, V.M. Panasyuk, V.V. Parkhomchuk, I.V. Poletaev, V.A. Polukhin, A.Yu. Protopopov, D.N. Pureskin, A.A. Putmakov, P.A. Selivanov, E.P. Semenov, D.V. Senkov, D.N. Skorobogatov, N.P. Zapiatkin BINP SB RAS, Novosibirsk, Russia
	The electron cooler of a 2 MEV for COSY storage ring FZJ is assembled in BINP. Results of experiments with high voltage, with electron beam, cascade transformer for distribution power along acceleration tube will be discussed in this report. The COSY cooler is designed on the classic scheme of low energy coolers like cooler CSRm, CSRe, LEIR that was produced in BINP before. The electron beam is transported inside the longitudinal magnetic field along whole trajectory from an electron gun to a collector. This optic scheme is stimulated by the wide range of the working energies 0.025–2 MeV. The electrostatic accelerator consists of 33 individual unify section. Each section contains two HV power supply (±30 kV) and power supply of the magnetic coils. The electrical power to each section is provided by the cascade transformer. The cascade transformer is the set of the transformers connected in series with isolating winding.
	Slides TUPM2HA01 [3.228 MB]

TUPM2HA02	Commissioning of the 2 MeV COSY Electron Cooler in Jülich
	V. Kamerdzhiev, L.J. Mao FZJ, Jülich, Germany J. Dietrich DELTA, Dortmund, Germany J. Dietrich HIM, Mainz, Germany L.J. Mao IMP, Lanzhou, People's Republic of China V.V. Parkhomchuk, V.B. Reva BINP SB RAS, Novosibirsk, Russia
	The construction of the 2 MeV electron cooler at BINP has been completed. After initial testing, the cooler was shipped to Jülich. The installation in COSY is scheduled to begin in April 2013. The report covers the installation and commissioning progress in Jülich. The history of the project is briefly touched on.
	Slides TUPM2HA02 [4.490 MB]

WEPPO04	Collector for Electron Cooling Systems with Suppression of Reflected Electron Flux	103
	M.I. Bryzgunov, A.V. Bubley, V.A. Chekavinskiy, I.A. Gusev, A.V. Ivanov, M.N. Kondaurov, V.M. Panasyuk, V.V. Parkhomchuk, D.N. Pureskin, A.A. Putmakov, V.B. Reva, D.V. Senkov, D.N. Skorobogatov BINP SB RAS, Novosibirsk, Russia
	Results of testing of the collector with Wien filter in the 2 MeV electron cooling system for COSY synchrotron are presented. Efficiency of a collector in high voltage electron cooling devices is important from the point of view of the load on high voltage power supply, radiation safety and vacuum conditions in the system. The collector for 2 MeV COSY cooler is supplemented with Wien filter which allows increase efficiency of the system by deflection secondary electron flux in crossed transverse electric and magnetic fields. Results of tests show that such solution provides efficiency of recuperation in the cooler up to 10^-5. After tests some changes were made in the construction of the Wien filter to improve quality of the collector performance.

WEPPO07	Matching of Magnetic Field with Energy of Electrons in 2 MeV COSY Cooler	110
	V.M. Panasyuk, M.I. Bryzgunov, A.V. Bubley, V.V. Parkhomchuk, V.B. Reva BINP SB RAS, Novosibirsk, Russia
	In the high energy electron cooler for COSY the beam energy range is wide (24 keV- 2 MeV). Typical guiding magnetic fields are 0.5 kG in accelerating tube, 1kG in transport channels and 2 kG in cooling solenoid and adjoining 45 degree toroids. As a result we have two sections with longitudinal gradient of field, three 90 degree bends and 45 degree toroid before solenoid entrance. In such circumstances the conditions of passage of electrons through the channel and theirs entrance into solenoid without heating are discussed. Also the results of using of correctors and pick-up system are considered.

WEPPO08	Electron Cooler for the NICA Collider	113
	S. Yakovenko, E.V. Ahmanova, A.G. Kobets, I.N. Meshkov, R.V. Pivin, A.Yu. Rudakov, A.V. Shabunov, A.V. Smirnov, N.D. Topilin, Yu.A. Tumanova JINR, Dubna, Moscow Region, Russia A.A. Filippov Allrussian Electrotechnical Institute, Moskow, Russia A.V. Ivanov, V.V. Parkhomchuk BINP SB RAS, Novosibirsk, Russia
	The goal of the cooling system of the NICA collider is to meet the required parameters of ion beams in energy range of 1–4.5GeV/u that corresponds to the 0.5–2.5 of the electron MeV. The electron cooler is developed according to the available world practice of manufacturing of similar systems. The main peculiarity of the electron cooler for the NICA collider is use of two cooling electron beams (one electron beam per each ring of the collider) that never has been done. The acceleration and deceleration of the electron beams is produced by common high-voltage generator. The cooler consist of three tanks. Two of them contain acceleration/deceleration tubes and are immersed in superconducting solenoids. The third one contains HV generator. The scheme of the electron cooler, its main parameters and operation regime are presented.
	Poster WEPPO08 [0.443 MB]

WEPPO12	Compass for Measuring the Magnetic Lines Straightness at the Cooling Section in Vacuum	121
	A.V. Bubley, M.I. Bryzgunov, V.G. Cheskidov, M.G. Fedotov, V.K. Gosteev, O.I. Meshkov, V.M. Panasyuk, V.V. Parkhomchuk, V.B. Reva BINP SB RAS, Novosibirsk, Russia V. Kamerdzhiev, G. Langenberg FZJ, Jülich, Germany
	The 2 MeV cooler is under construction at COSY synchrotron. Due to high energy it is very strict requirement for the magnetic field homogeneity at the cooling solenoid. Since the magnetic field has to be adjusted during the accelerator operation, the measurement system is installed inside vacuum chamber. The design and features of this system are described in the article, as well as preliminary results are discussed.