COLLECTIVE EFFECTS IN THE RHIC-II ELECTRON COOLER

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

OSTI ID:910420

POZDEYEV, E; BEN-ZVI, I; FEDOTOV, A; KAYRAN, D; LITVINENKO, V; WANG, G

Electron cooling at RHIC-I1 upgrade imposes strict requirements on the quality of the electron beam at the cooling section. Beam current dependent effects such as the space charge, wake fields, CSR in bending magnets, trapped ions, etc., will tend to spoil the beam quality and decrease the cooling efficiency. In this paper, we estimate the defocusing effect of the space charge at the cooling section and describe our plan to compensate the defocusing space charge force by focusing solenoids. We also estimate the energy and emittance growth cased by wake fields. Finally, we discuss ion trapping in the electron cooler and consider different techniques to minimize the effect of ion trapping.

• Research Organization: Brookhaven National Lab. (BNL), Upton, NY (United States)
• Sponsoring Organization: Doe - Office Of Science
• DOE Contract Number: DE-AC02-98CH10886
• OSTI ID: 910420
• Report Number(s): BNL-77549-2007-CP; R&D Project: 18031; TRN: US0704219
• 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 CURRENTS
BENDING
EFFICIENCY
ELECTRON BEAMS
ELECTRON COOLING
ELECTRONS
FOCUSING
HEAT EXCHANGERS
MAGNETS
SOLENOIDS
SPACE CHARGE
TRAPPING
IONS