RHIC local orbit control and power supply resolution

Satogata, T.

关键词: AVAILABILITY;    COLLIMATORS;    LUMINOSITY;    OPTICS;    RECOMMENDATIONS;    RESOLUTION relativistic heavy ion collider;   

DOI  :  10.2172/973136
RP-ID  :  BNL--90845-2009-IR
PID  :  OSTI ID: 973136
Others  :  R&D Project: KBCH139
Others  :  Other: KB0202011
Others  :  TRN: US1001898

学科分类：核物理和高能物理

美国|英语

来源: SciTech Connect

【 摘 要 】

Slow global orbit correction at store, running every 30-60 minutes, has been in place since RHIC Run-8. This correction should include tight orbit drift tolerances at the interaction point and collimators, as these are locations where orbit drift of a few hundred microns is observable in backgrounds and luminosity. Future improvements in low beta optics will only lower these tolerances. runfy09 attempts to control the collimator orbit with local three-bumps after global orbit corrections appeared to be limited by corrector power supply resolution. This paper evaluates orbit control in the context of existing corrector power supply resolution, and makes recommendations for planned RHIC operations scenarios.