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

BAI Sha; GAO Jie

doi:10.1088/1674-1137/35/4/014

Chinese Physics C> 2011, Vol. 35> Issue(4) : 397-401 DOI: 10.1088/1674-1137/35/4/014

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

BAI Sha ,
GAO Jie

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Abstract：
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.

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BAI Sha and GAO Jie. Simulation of beam size multiknobs correction at the Accelerator Test Facility 2 at KEK[J]. Chinese Physics C, 2011, 35(4): 397-401. doi: 10.1088/1674-1137/35/4/014

BAI Sha and GAO Jie. Simulation of beam size multiknobs correction at the Accelerator Test Facility 2 at KEK[J]. Chinese Physics C, 2011, 35(4): 397-401. doi: 10.1088/1674-1137/35/4/014 shu

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Received: 2010-07-07
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

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

BAI Sha
GAO Jie

Received Date: 2010-07-07
Accepted Date: 1900-01-01
Available Online: 2011-04-05

Abstract: 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.