Simulation of beam size multiknobs correction at the Accelerator Test Facility 2 at KEK |
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Authors: | BAI Sha B. Bolzon P. Bambade GAO Jie |
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Affiliation: | 1. Institute of High Energy Physics, CAS, Beijing 100049, China 2. LAPP, CNRS/IN2P3, Annecy, France 3. LAL, Univ Paris-Sud, CNRS/IN2P3, Orsay, France |
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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 com- missioning, 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 func- tion multiknobs correction in the large β optics of ATF2, in the presence of two kinds of magnet inaccuracies (quadrupote 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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Keywords: | ATF2 beam size multiknobs simulation |
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