RHIC electron lens beam transport system design considerations

Gu, X. ; Pikin, A. ; Okamura, M. ; Fischer, W. ; Luo, Y. ; Gupta, R. ; Hock, J. ; Jain, A. ; Raparia, D.

关键词: BEAM POSITION;    BEAM TRANSPORT;    BETATRONS;    ELECTRON BEAMS;    ELECTRON GUNS;    ELECTRONS;    FERMILAB TEVATRON;    HEAVY IONS;    LENSES;    LINEAR COLLIDERS;    LUMINOSITY;    MAGNETS;    SPACE CHARGE;    STORAGE RINGS;    SUPERCONDUCTING MAGNETS;    TRANSPORT;    BR;   

DOI  :  10.2172/993470
RP-ID  :  BNL--94318-2010-IR
PID  :  OSTI ID: 993470
Others  :  R&D Project: KBCH139
Others  :  18064
Others  :  Other: KB0202011
Others  :  TRN: US1008136

学科分类：核物理和高能物理

美国|英语

来源: SciTech Connect

【 摘 要 】

To apply head-on beam-beam compensation for RHIC, two electron lenses are designed and will be installed at IP10. Electron beam transport system is one of important subsystem, which is used to transport electron beam from electron gun side to collector side. This system should be able to change beam size inside superconducting magnet and control beam position with 5 mm in horizontal and vertical plane. Some other design considerations for this beam transport system are also reported in this paper. The head-on beam-beam effect is one of important nonlinear source in storage ring and linear colliders, which have limited the luminosity improvement of many colliders, such as SppS, Tevatron and RHIC. In order to enhance the performance of colliders, beam-beam effects can be compensated with direct space charge compensation, indirect space charge compensation or betatron phase cancellation scheme. Like other colliders, indirect space charge compensation scheme (Electron Lens) was also proposed for Relativistic Heavy Ion Collider (RHIC) beam-beam compensation at Brookhaven National Laboratory. The two similar electron lenses are located in IR10 between the DX magnets. One RHIC electron lens consists of one DC electron gun, one superconducting magnet, one electron collector and beam transport system.