Title :
A study of betatron and momentum collimators in RHIC
Author :
Trbojevic, D. ; Stevens, A.J. ; Harrison, M.A. ; Dell, E. ; Peggs, S.
Author_Institution :
Brookhaven Nat. Lab., Upton, NY, USA
Abstract :
The Relativistic Heavy Ion Collider (RHIC) has two interaction regions where β*=1-2 m, with large detectors PHENIX and STAR. The transverse and longitudinal emittances are expected to double in size between one to two hours due to intra-beam scattering which may lead to transverse beam loss. Primary betatron collimators are positioned in the ring to allow efficient removal of particles with large betatron amplitudes. We have investigated distributions and losses coming from the out-scattered particles from the primary collimators, as well as the best positions for the secondary momentum and betatron collimators
Keywords :
beam handling equipment; colliding beam accelerators; ion accelerators; storage rings; synchrotrons; PHENIX; RHIC; Relativistic Heavy Ion Collider; STAR; betatron amplitudes; betatron collimators; interaction regions; intra-beam scattering; longitudinal emittances; momentum collimators; out-scattered particles; transverse emittances; Apertures; Collimators; Detectors; Gold; Ion beams; Laboratories; Particle beams; Particle scattering; Polarization; Protons;
Conference_Titel :
Particle Accelerator Conference, 1997. Proceedings of the 1997
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-4376-X
DOI :
10.1109/PAC.1997.749598
