Evaluating the dynamic aperture evaluation for the new RHIC 250 GeV polarized proton lattice

Conference · Mon Mar 28 00:00:00 EDT 2011

OSTI ID:1012259

Gu, X; Luo, Y; Fischer, W; Huang, H; Tepikian, S

To increase luminosity in the Relativistic Heavy Ion Collider's (RHIC's) polarized proton 250 GeV operations, we are considering reducing {beta}* to 0.65 m at the interaction points (IPs), and increasing bunch intensity. The new working point near the 2/3 integer will used on the ramp to preserve polarization. In addition, we plan to adjust the betatron-phase advances between IP6 and IP8 to (k+1/2)*{pi} so to lower the dynamic beta-beat from the beam-beam interaction. The effects of all these changes will impact the dynamic aperture, and hence, it must be evaluated carefully. In this article, we present the results of tracking the dynamic aperture with the proposed lattices.

• Research Organization: Brookhaven National Lab. (BNL), Upton, NY (United States). Relativistic Heavy Ion Collider (RHIC)
• Sponsoring Organization: DOE - Office Of Science
• DOE Contract Number: DE-AC02-98CH10886
• OSTI ID: 1012259
• Report Number(s): BNL-94078-2011-CP; R&D Project: KBCH139; 18064; KB0202011; TRN: US1102232
• Resource Relation: Conference: 2011 Particle Accelerator Conference (PAC'11); New York, NY; 20110328 through 20110401
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ACCELERATORS
APERTURES
BEAM-BEAM INTERACTIONS
EVALUATION
HEAVY IONS
LUMINOSITY
POLARIZATION
PROTONS
relativistic heavy ion collider