PROTON BEAM EMITTANCE GROWTH AT RHIC

Conference · Mon Jun 25 00:00:00 EDT 2007

OSTI ID:910428

ZHANG, S; PTITSYN, V

With significant beam intensity improvement in RHIC polarized proton runs in 2005 and 2006, the emittance growth becomes a luminosity limiting factor. The beam emittance growth has a dependence on the dynamic pressure rise, which in RHIC proton runs is mainly caused by the electron cloud. The beam instability is usually absent, and the emittance growth rate is much slower than the ones caused by the head-tail instability. It is suspected that the emittance growth is caused by the electron cloud below the instability threshold.

• Research Organization: Brookhaven National Lab. (BNL), Upton, NY (United States)
• Sponsoring Organization: Doe - Office Of Science
• DOE Contract Number: DE-AC02-98CH10886
• OSTI ID: 910428
• Report Number(s): BNL-77563-2007-CP; R&D Project: 18031; TRN: US0704227
• Resource Relation: Conference: 22ND PARTICLE ACCELERATOR CONFERENCE; ALBUQUERQUE, NEW MEXICO; 20070625 through 20070629
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ACCELERATORS
BEAM EMITTANCE
ELECTRONS
INSTABILITY
LUMINOSITY
PROTON BEAMS
PROTONS