SuperKEKB operation using crab waist collision scheme
SuperKEKB operation using crab waist collision scheme
复制标题
SuperKEKB操作采用蟹腰碰撞方案
DOI：
10.1140/epjp/s13360-021-01979-8
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发表时间：
2021
期刊：
影响因子：
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通讯作者：
Z. Zong
中科院分区：
文献类型：
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作者：
Y. Ohnishi;T. Abe;K. Akai;Y. Arimoto;K. Egawa;S. Enomoto;H. Fukuma;Y. Funakoshi;Kazuro Furukawa;N. Iida;H. Ikeda;T. Ishibashi;S. Iwabuchi;H. Kaji;T. Kamitani;T. Kawamoto;M. Kikuchi;T. Kobayashi;K. Kodama;H. Koiso;M. Masuzawa;T. Mimashi;G. Mitsuka;F. Miyahara;T. Miyajima;Takashi Mori;A. Morita;S. Nakamura;T. Nakamura;K. Nakanishi;M. Nishiwaki;S. Ogasawara;K. Ohmi;N. Ohuchi;K. Oide;T. Oki;M. Rehman;Y. Seimiya;K. Shibata;Y. Suetsugu;H. Sugimoto;H. Sugimura;M. Tawada;S. Terui;M. Tobiyama;R. Ueki;X. Wang;K. Watanabe;R. Yang;S. Yoshimoto;T. Yoshimoto;D. Zhou;X. Zhou;Z. Zong
SuperKEKB是日本建造的正负电子不对称能量双环对撞机。它被用来探索 B 介子衰变的新现象。因此，需要极高的光度。采用了一种被称为“纳米光束方案”的低发射率和大Piwinski角的碰撞方案，通过将相互作用点处的垂直β函数压缩到小于束团长度来实现更高的发光度。 P. Raimondi等人提出的“蟹腰碰撞方案”。还采用了提高发光性能的方法。本文概述了 SuperKEKB 纳米束和蟹腰碰撞方案的运行情况。
SuperKEKB is an electron–positron asymmetric-energy double-ring collider, which was built in Japan. It has been operated to explore new phenomena in B-meson decays. Hence, extremely higher luminosity is required. A collision scheme of low emittance with a large Piwinski angle called a “nano-beam scheme” has been adopted to achieve higher luminosity by squeezing the vertical beta function at the interaction point to be smaller than the bunch length. A “crab waist collision scheme” proposed by P. Raimondi et al. has also been adopted to improve the luminosity performance. The article presents an overview of the operation of the nano-beam and crab waist collision schemes at SuperKEKB.