Re-visit local coupling correction in the interaction regions of RHIC

Luo, Y. ; Fischer, W. ; Liu, C. ; Marusic, A. ; Minty, M. ; Ptitsyn, V. ; Schoefer, V. ; Tepikian, S. ; Trbojevic, D. ; Zimmer, C.

Brookhaven National Laboratory. Collider-Accelerator Department.

关键词: Protons;    43 Particle Accelerators;    Brookhaven Rhic;    Relativistic Heavy Ion Collider;    Quadrupoles Relativistic Heavy Ion Collider;   

DOI  :  10.2172/1032058
RP-ID  :  BNL--96530-2011-IR
RP-ID  :  DE-AC02-98CH10886
RP-ID  :  1032058

美国|英语

来源: UNT Digital Library

【 摘 要 】

In this article we will re-visit the local coupling correction in the interaction regions (IRs) of the Relativistic Heavy Ion Collider (RHIC). We will review the measurement data of triplet quadrupole rolls, the local coupling correction strengths in the RHIC control system, and the methods for the local coupling correction with local skew quadrupole correctors. Based on the in-turnnel measurement data of triplet roll errors in 2011, we will analytically calculate and simulate IR-bump method to find out the local skew correction strengths and compare them at store and at injection with the Blue and Yellow ring lattices in the 2011 polarized proton (p-p) and Au-Au runs. The vertical dispersion from the triplet roll errors, local and global coupling correction skew quadrupoles, and the vertical dipole correctors are calculated and discussed.