High-Luminosity B Factory e+e− Colliders

IF 11.3 1区化学 Q1 CHEMISTRY, PHYSICAL

ACS Catalysis Pub Date : 2024-09-26 DOI:10.1146/annurev-nucl-113021-055740

John T. Seeman

引用次数: 0

Abstract

Three double-ring B factories—PEP-II, KEKB, and SuperKEKB—were built with asymmetric beam energies to produce high luminosity at the Υ(4S) resonance producing copious B mesons and associated particle physics data, delivered to their respective particle physics detectors, BaBar, Belle, and Belle II. In PEP-II and KEKB, the primary goal was achieved to make the first measurements of charge parity (CP) violation in decays in the B meson system. PEP-II and KEKB have finished beam operations, but particle data analysis continues. SuperKEKB is extending those measurements. The beam operation of SuperKEKB with Belle II has recently started. These three accelerators have pushed the state of the art of accelerators of two-ring colliders, including small beam emittances, small interaction point beam sizes, large stored beam currents, crab cavities, top-up injection with the detectors on, bunch-by-bunch feedbacks, crab waist operation, high beam–beam parameters, high peak luminosity, and high integrated luminosity.

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高亮度 B 工厂 e+e 对撞机

三个双环B工厂--PEP-II、KEKB和SuperKEKB--采用不对称束流能量建造，在Υ(4S)共振处产生高亮度，产生大量B介子和相关粒子物理数据，并输送到各自的粒子物理探测器--BaBar、Belle和Belle II。PEP-II和KEKB的主要目标是首次测量B介子系统衰变中的电荷奇偶性（CP）违反。PEP-II 和 KEKB 已经完成了光束运行，但粒子数据分析仍在继续。SuperKEKB 正在扩展这些测量。SuperKEKB 与 Belle II 的光束运行最近已经开始。这三台加速器推动了双环对撞机加速器的技术发展，包括小光束发射率、小相互作用点光束尺寸、大存储光束电流、蟹腔、探测器开启时的补加注入、逐束反馈、蟹腰运行、高光束-光束参数、高峰值光度和高综合光度。

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来源期刊

ACS Catalysis CHEMISTRY, PHYSICAL-

CiteScore

20.80

自引率

6.20%

发文量

1253

审稿时长

1.5 months

期刊介绍： ACS Catalysis is an esteemed journal that publishes original research in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. It offers broad coverage across diverse areas such as life sciences, organometallics and synthesis, photochemistry and electrochemistry, drug discovery and synthesis, materials science, environmental protection, polymer discovery and synthesis, and energy and fuels. The scope of the journal is to showcase innovative work in various aspects of catalysis. This includes new reactions and novel synthetic approaches utilizing known catalysts, the discovery or modification of new catalysts, elucidation of catalytic mechanisms through cutting-edge investigations, practical enhancements of existing processes, as well as conceptual advances in the field. Contributions to ACS Catalysis can encompass both experimental and theoretical research focused on catalytic molecules, macromolecules, and materials that exhibit catalytic turnover.