Simulation of beam size multiknobs correction at the Accelerator Test Facility 2 at KEK  

作　　者：白莎 B. Bolzon P. Bambade 高杰 

机构地区：[1]Institute of High Energy Physics CAS [2]LAPP CNRS/IN2P3 [3]LAL Univ Paris-Sud CNRS/IN2P3

出　　处：《Chinese Physics C》2011年第4期397-401,共5页中国物理C（英文版）

基　　金：Supported by Agence Nationale de la Recherche of the French Ministry of Research (Programme Blanc, Project ATF2-IN2P3-KEK, contract ANR-06-BLAN-0027);National Natural Science Foundation of China (10775154, 10525525)

摘　　要：The ATF2 project is the final focus system prototype for the ILC and CLIC linear collider projects, with a purpose of reaching a 37 nm vertical beam size at the interaction point （IP）. During the initial commissioning, we started with larger-than-nominal β-functions at the IP in order to reduce the effects from higher-order optical aberrations and thereby simplifying the optical corrections needed. We report on the simulation studies at two different IP locations developed based on waist scan, dispersion, coupling and β function multiknobs correction in the large β optics of ATF2, in the presence of two kinds of magnet inaccuracies （quadrupole gradient and roll errors） to generate all possible linear optic distortions at the IP. A vertical beam size which is very close to the nominal beam size is obtained based on the simulation study.The ATF2 project is the final focus system prototype for the ILC and CLIC linear collider projects, with a purpose of reaching a 37 nm vertical beam size at the interaction point （IP）. During the initial commissioning, we started with larger-than-nominal β-functions at the IP in order to reduce the effects from higher-order optical aberrations and thereby simplifying the optical corrections needed. We report on the simulation studies at two different IP locations developed based on waist scan, dispersion, coupling and β function multiknobs correction in the large β optics of ATF2, in the presence of two kinds of magnet inaccuracies （quadrupole gradient and roll errors） to generate all possible linear optic distortions at the IP. A vertical beam size which is very close to the nominal beam size is obtained based on the simulation study.

关 键 词：ATF2 beam size multiknobs SIMULATION 

分 类 号：O572.211[理学—粒子物理与原子核物理]