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Chinese Physics C> 2003, Vol. 27> Issue(8) : 726-730 

Test Results of HIRFL-CSR Main Ring Electron Cooling Device

  •  Institute of Modern Physics, CAS, Lanzhou 730000, China2 Budker Institute of Nuclear Physics, Russian Academy of Science, Novosibirsk 630090, Russia

  • Electron cooling device for HIRFL-CSR main ring has been completed under the cooperation between BINP and IMP. It has three distinctive characters. Variable profile electron beam can be produced by the electron gun, the size and density distribution of electron beam can be changed. The parallelism of the magnetic field in the cooling section achieves less than 1×10－5, in this case, the r.m.s angle deviations of the magnetic field line in horizontal and vertical direction are 7.838×10 and 8.044×10－6 respectively. The electron beam loss is reduced, the vacuum condition is improved, and the instability of the electron beam is suppressed becanse of using of electrostatic bending plate in the toroid. The beam profile and density distribution were measured in the testbench. The characters of the gun and collector were investigated. The main test results are presented in this paper.
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    [1] XIA J W, ZHAN WL, WEI B W et al. Nucl. Phys. Rev., 2001, 18(1) :35–38(in Chinese)(夏佳文,詹文龙,魏宝文等.原子核物理评论,2001,18(1) :35)2 Bosser J. Electron Cooling in CAS CERN Accelerator School Fifth Advanced Accelerator Physics Course CERN95–06 Vol Ⅱ, Geneva: Editor Turner. S 1995, 673–7303 YANG X D, Parkhomehuk V V. High Power Laser and Particle Beams, 2000, 12(6) :771 (in Chinese)(杨晓东,Parkhomchuk V V.强激光与粒子束2000． 12(6) :771) 4 YANG X D et al. High Energy Phys. and Nucl. Phys., 2000, 24(12) :1179 (in Chinese)(杨晓东,宋明涛,夏佳文等.高能物理与核物理2000,24(12) : 1179)5 YANG X D, HE Y, ZHAO H W et al. High Power Laser and Particle Beams, 2001, 13(5) :649 (in Chinese)(杨晓东,何源,赵红卫等.强激光与粒子束2001,13(5) :649)6 Arapov L N et al. Precision Solenoid for Electron Cooling. Proceedings of the ⅩⅢ International Conference on High Energy Accelerators, Novosibirsk: Nauka, Siberian Branch, 1987, 1:341–344 7 YANG X D et al. High Power Laser and Particle Beams, 2001, 13(5) :245–248(in Chinese)(杨晓东等.强激光与粒子束2001,13(5) :245–248) 8 Bubley A, Gonchanov A, Ivanov A et al. The Electron Gun with Variable Beam Profile for Optimization of Electron Cooling, Proceedings of EPAC 2002, Paris, France: 2002, 1356–1358

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YANG Xiao-Dong, ZHAO Hong-Wei, WANG Zhi-Xue, BINP Electron and Cooler Group. Test Results of HIRFL-CSR Main Ring Electron Cooling Device[J]. Chinese Physics C, 2003, 27(8): 726-730.
YANG Xiao-Dong, ZHAO Hong-Wei, WANG Zhi-Xue, BINP Electron and Cooler Group. Test Results of HIRFL-CSR Main Ring Electron Cooling Device[J]. Chinese Physics C, 2003, 27(8): 726-730. shu
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Received: 2002-10-28
Revised: 1900-01-01
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Test Results of HIRFL-CSR Main Ring Electron Cooling Device

    Corresponding author: YANG Xiao-Dong,
  • Institute of Modern Physics, CAS, Lanzhou 730000, China2 Budker Institute of Nuclear Physics, Russian Academy of Science, Novosibirsk 630090, Russia
  • Received Date: 2002-10-28
  • Accepted Date: 1900-01-01
  • Available Online: 2003-08-05

Abstract: Electron cooling device for HIRFL-CSR main ring has been completed under the cooperation between BINP and IMP. It has three distinctive characters. Variable profile electron beam can be produced by the electron gun, the size and density distribution of electron beam can be changed. The parallelism of the magnetic field in the cooling section achieves less than 1×10－5, in this case, the r.m.s angle deviations of the magnetic field line in horizontal and vertical direction are 7.838×10 and 8.044×10－6 respectively. The electron beam loss is reduced, the vacuum condition is improved, and the instability of the electron beam is suppressed becanse of using of electrostatic bending plate in the toroid. The beam profile and density distribution were measured in the testbench. The characters of the gun and collector were investigated. The main test results are presented in this paper.

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