Correction of Skew-Quadrupole Errors in RHIC
- Brookhaven National Lab. (BNL), Upton, NY (United States)
The correction scheme for skew-quadrupole (α1) errors in the Relativistic Heavy Ion Collider is presented. The α1 errors result from fabrication and from installation errors. At the selected betatron tune of vx = 28.826 and vy = 28.820, the principal resonances driven by α1 errors are vx-vy = 0, the sum resonances near vx+vy which cause residual tune splitting and distortion of beta function, and vy = 28&29 which cause vertical dispersion. Skew quadrupole correctors located in the insertions and arcs will be used to correct the coupling and sum resonances and, if required, separate correctors in the arcs could be used for vertical dispersion correction. The study of the α1 correction system confirmed that correction is possible at β* = 2 m and β* = 6 m and that the required corrector strengths are consistent with those specified for RHIC.
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- AC02-98CH10886; AC02-76CH00016
- OSTI ID:
- 1119350
- Report Number(s):
- BNL-102008-2013-IR
- Country of Publication:
- United States
- Language:
- English
Similar Records
Coil Creep and Skew-Quadrupole Field Components in the Tevatron
A Simulation Study of Linear Coupling Effects and Their Correction in RHIC