Rejuvenation of 7-Gev SuperKEKB Injector Linac
Rejuvenation of 7-Gev SuperKEKB Injector Linac
复制标题
7-Gev SuperKEKB 注射器直线加速器的复兴
DOI：
10.18429/jacow-ipac2018-mopmf073
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
Xiangyu Zhou
中科院分区：
文献类型：
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作者：
Kazuro Furukawa;M. Akemoto;D. Arakawa;Y. Arakida;H. Ego;A. Enomoto;Y. Enomoto;T. Higo;H. Honma;N. Iida;M. Ikeda;H. Kaji;K. Kakihara;T. Kamitani;H. Katagiri;M. Kawamura;M. Kurashina;S. Matsumoto;Toshihiro Matsumoto;H. Matsushita;S. Michizono;K. Mikawa;T. Miura;F. Miyahara;H. Nakajima;K. Nakao;T. Natsui;M. Nishida;Y. Ogawa;Y. Ohnishi;S. Ohsawa;F. Qiu;I. Satake;M. Satoh;Y. Seimiya;A. Shirakawa;H. Sugimura;T. Suwada;T. Takenaka;Madoka Tanaka;N. Toge;Y. Yano;K. Yokoyama;M. Yoshida;Rui Zhang;Xiangyu Zhou
KEK加速器直线加速器为粒子物理和光子科学实验提供电子和正电子已有30多年的历史。它是为SuperKEKB项目升级的，该项目的目标是光度比之前的项目KEKB增加40倍，以增加我们对味道物理的理解，超越基本粒子物理的标准模型。SuperKEKB能量不对称正负电子对撞机具有极高的光度，需要来自注入器的大电流、低发射度和低能量扩散的注入束。电子束是由一种新型的射频枪产生的，它提供了更高的束流，以对应于大的存储束流和在环中的短寿命。正电子源是另一个主要挑战，它通过提高正电子俘获效率将正电子束强度从1 nC提高到4nC，并通过引入阻尼环将垂直面上的正电子束发射度从2000μm降低到10μm，然后引入束团压缩器和能量压缩器。报告了返老还童的总结。
KEK injector linac has delivered electrons and positrons for particle physics and photon science experiments for more than 30 years. It was upgraded for the SuperKEKB project, which aims at a 40-fold increase in luminosity over the previous project KEKB, in order to increase our understanding of flavor physics beyond the standard model of elementary particle physics. SuperKEKB energy-asymmetric electronpositron collider with its extremely high luminosity requires a high current, low emittance and low energy spread injection beam from the injector. The electron beam is generated by a new type of RF gun, that provides a much higher beam current to correspond to a large stored beam current and a short lifetime in the ring. The positron source is another major challenge that enhances the positron bunch intensity from 1 to 4 nC by increasing the positron capture efficiency, and the positron beam emittance is reduced from 2000 μm to 10 μm in the vertical plane by introducing a damping ring, followed by the bunch compressor and energy compressor. The summary of the rejuvenation is reported.