STUDY OF ELECTRON -PROTON BEAM-BEAM INTERACTION IN ERHIC

Conference · Mon Jun 25 04:00:00 EDT 2007

OSTI ID:910404

HAO, Y; LITVINENKO, V N; MONTAG, C; POZDEYEV, E; PTITSYN, V

Beam-beam effects present one of major factors limiting the luminosity of colliders. In the linac-ring option of eRHIC design, an electron beam accelerated in a superconducting energy recovery linac collides with a proton beam circulating in the RHIC ring. There are some features of beam-beam effects, which require careful examination in linac-ring configuration. First, the beam-beam interaction can induce specific head-tail type instability of the proton beam referred to as a ''kink'' instability. Thus, beam stability conditions should be established to avoid proton beam loss. Also, the electron beam transverse disruption by collisions has to be evaluated to ensure beam quality is good enough for the energy recovery pass. In addition, fluctuations of electron beam current and/or electron beam size, as well as transverse offset, can cause proton beam emittance growth. The tolerances for those factors should be determined and possible countermeasures should be developed to mitigate the emittance growth. In this paper, a soft Gaussian strong-strong simulation is used to study all of mentioned beam-beam interaction features and possible techniques to reduce the emittance growth.

• Research Organization: Brookhaven National Laboratory
• Sponsoring Organization: Doe - Office Of Science
• DOE Contract Number: AC02-98CH10886
• OSTI ID: 910404
• Report Number(s): BNL--77528-2007-CP
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ACCELERATORS
BEAM-BEAM INTERACTIONS
CONFIGURATION
DESIGN
ELECTRON BEAMS
ELECTRONS
ENERGY RECOVERY
FLUCTUATIONS
INSTABILITY
LINEAR ACCELERATORS
LUMINOSITY
PROTON BEAMS
SIMULATION
STABILITY