低温工学
Online ISSN : 1880-0408
Print ISSN : 0389-2441
ISSN-L : 0389-2441
解説
SuperKEKB ビーム最終集束超伝導電磁石
大内 徳人有本 靖山岡 広川井 正徳近藤 良也宗 占國王 旭東青木 香苗植木 竜一土屋 清澄金 太炫
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2019 年 54 巻 1 号 p. 23-32

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The SuperKEKB electron-positron collider is an accelerator that has been upgraded for the KEKB. This collider is designed to explore New Physics beyond the Standard Model of particle physics in the B meson regime. The target of SuperKEKB is to attain a luminosity that is 40 times higher than that of the KEKB. To accomplish this, a new beam final focus system of the superconducting magnets was constructed based on the accelerator design of “nano beam scheme”. The system has the extremely significant function of squeezing beams to 0.05 μm from 1 μm in the KEKB, and the luminosity is expected to increase to a value 20 times higher through this process. SuperKEKB has completed Phase-2 beam operation, and the first beam collision was observed on April 26th, 2018. This paper describes the superconducting magnets and cryostat system for focusing beams at the interaction point.

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© 2019 公益社団法人 低温工学・超電導学会 (旧 社団法人 低温工学協会)
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