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MOXAA02 |
Highlights from SuperKEKB Commissioning |
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- Y. Ohnishi
KEK, Ibaraki, Japan
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SuperKEKB is an electron-positron double-ring asymmetric-energy collider to search new physics phenomena appeared in B-boson decays. In order to accomplish this purpose, the huge statics, it is necessary for 40 times the luminosity as high as the predecessor KEKB collider. The strategy is that the vertical beta function at the IP is squeezed down to 1/20 and the beam currents doubles those of KEKB while keeping the same beam-beam parameter. The vertical beta function at the IP will be much smaller than the bunch length, however, the hourglass effect which degrades the luminosity will be reduced by adopting a novel ‘‘nano-beam’ scheme. First of all, the Phase 2 commissioning was focused on the verification of nano-beam scheme. Secondary, beam related background at the Belle II detector was also studied for the preparation of the pixel vertex detector installed before the Phase 3 operation. The preliminary results and accomplishments of the commissioning in Phase 2 will be reported in this article.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-eeFACT2018-MOXAA02
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About • |
paper received ※ 12 October 2018 paper accepted ※ 19 February 2019 issue date ※ 21 April 2019 |
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