RHIC local orbit control and power supply resolution

Satogata, T.

Brookhaven National Laboratory (BNL) Relativistic Heavy Ion Collider

关键词: Collimators;    Luminosity;    43 Particle Accelerators;    Recommendations;    Relativistic Heavy Ion Collider;   

DOI  :  10.2172/973136
RP-ID  :  BNL--90845-2009-IR
RP-ID  :  DE-AC02-98CH10886
RP-ID  :  973136

美国|英语

来源: UNT Digital Library

【 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.