Source of second order chromaticity in RHIC

Luo, Y. ; Gu, X. ; Fischer, W. ; Trbojevic, D.

Brookhaven National Laboratory. Collider-Accelerator Department.

关键词: Relativistic Heavy Ion Collider;    43 Particle Accelerators;    Perturbation Theory;    Quadrupoles;    Brookhaven Rhic Relativistic Heavy Ion Collider;   

DOI  :  10.2172/1004639
RP-ID  :  BNL--94605-2011-IR
RP-ID  :  DE-AC02-98CH10886
RP-ID  :  1004639

美国|英语

来源: UNT Digital Library

【 摘 要 】

In this note we will answer the following questions: (1) what is the source of second order chromaticities in RHIC? (2) what is the dependence of second order chromaticity on the on-momentum {beta}-beat? (3) what is the dependence of second order chromaticity on {beta}* at IP6 and IP8? To answer these questions, we use the perturbation theory to numerically calculate the contributions of each quadrupole and sextupole to the first, second, and third order chromaticities.