Simulation study of dynamic aperture with head-on beam-beam compensation in the RHIC

Luo, Y. ; Fischer, W.

Brookhaven National Laboratory (BNL) Relativistic Heavy Ion Collider

关键词: Simulation Relativistic Heavy Ion Collider;    Protons;    Apertures;    43 Particle Accelerators;    Heavy Ions;   

DOI  :  10.2172/988801
RP-ID  :  BNL--93904-2010-IR
RP-ID  :  DE-AC02-98CH10886
RP-ID  :  988801

美国|英语

来源: UNT Digital Library

【 摘 要 】

In this note we summarize the calculated 10{sup 6} turn dynamic apertures with the proposed head-on beam-beam compensation in the Relativistic Heavy Ion Collider (RHIC). To compensate the head-on beam-beam effect in the RHIC 250 GeV polarized proton run, we are planning to introduce a DC electron beam with the same transverse profile as the proton beam to collide with the proton beam. Such a device to provide the electron beam is called an electron lens (e-lens). In this note we first present the optics and beam parameters and the tracking setup. Then we compare the calculated dynamic apertures without and with head-on beam-beam compensation. The effects of adjusted phase advances between IP8 and the center of e-lens and second order chromaticity correction are checked. In the end we will scan the proton and electron beam parameters with head-on beam-beam compensation.