Off-momentum dynamic aperture for lattices in the RHIC heavy ion runs

Conference · Sun May 20 00:00:00 EDT 2012

OSTI ID:1046991

Luo, Y; Bai, M; Blaskiewicz, M; Gu, X; Fischer, W; Marusic, A; Roser, T; Tepikian, S; Zhang, S

To reduce transverse emittance growth rates from intrabeam scattering in the RHIC heavy ion runs, a lattice with an increased phase advance in the arc FODO cells was adopted in 2008-2011. During these runs, a large beam loss due to limited off-momentum dynamic aperture was observed during longitudinal RF re-bucketing and with transverse cooling. Based on the beam loss observations in the previous ion runs and the calculated off-momentum apertures, we decided to adopt the lattice used before 2008 for the 2012 U-U and Cu-Au runs. The observed beam decay and the measured momentum aperture in the 2012 U-U run are presented.

• Research Organization: Brookhaven National Lab. (BNL), Upton, NY (United States). Relativistic Heavy Ion Collider (RHIC)
• Sponsoring Organization: USDOE SC OFFICE OF SCIENCE (SC)
• DOE Contract Number: DE-AC02-98CH10886
• OSTI ID: 1046991
• Report Number(s): BNL-96697-2012-CP; R&D Project: KBCH139; 18031; KB0202011; TRN: US1203837
• Resource Relation: Conference: 2012 International Particle Accelerator Conference (IPAC 2012); New Orleans, LA; 20120520 through 20120525
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ACCELERATORS
APERTURES
DECAY
HEAVY IONS
SCATTERING
BROOKHAVEN RHIC
relativistic heavy ion collider