Injections Options for 12 GEV CEBAF Upgrade.

Kazimi, R. ; Benesch, J. F. ; Chao, Y. ; Grames, J. M. ; Krafft, G. A. ; Tiefenback, M.

Technical Information Center Oak Ridge Tennessee

关键词: CEBAF accelerator;    Upgrading;    Computerized simulation;    Electron beams;    Electron guns;   

RP-ID  :  DE2005840296

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

Jefferson Lab is planning a major upgrade of CEBAF accelerator from 6 to 12 GeV. The injection energy needs to be increased accordingly from 67 MeV to 123 MeV. While the present 100 keV electron gun and beam formation up to 5 MeV would remain unchanged, the accelerating SRF modules in the current injector cannot provide the desired energy increase. Two options for attaining the energy increase have been considered: (1) replacing the present injector SRF modules with new, higher gradient modules, or (2) re-circulating the electron beam through the existing cryomodules to achieve the necessary energy gain in two passes. In this paper we present computer simulation studies for these two options of the injector upgrade and list their advantages and disadvantages.