Recent advances of experiment and simulation on luminosity performance at BEPCII

IF 1.5 3区物理与天体物理 Q3 INSTRUMENTS & INSTRUMENTATION Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment Pub Date : 2025-02-12 DOI:10.1016/j.nima.2025.170289

Di Yin , Yanru Wei , Huiping Geng , Yudong Liu , Yuan Zhang , Jinliu Su , Zhi Liu , Hongfei Ji , Jun Xing , Weibin Liu , Junhui Yue , Chenghui Yu

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引用次数: 0

Abstract

Recently, the routine operational peak luminosity of BEPCII at 1.89 GeV has reached

1.0 \times 1 0^{33} {cm}^{- 2} s^{- 1}

. The tuning of the transverse multi-bunch feedback system has effectively mitigated the oscillations of the coherent beam-beam

π

mode in the horizontal direction, increasing the peak luminosity by approximately 20%. This paper introduces the commissioning process and discusses the observed beam phenomena. Additionally, the underlying mechanisms have been examined through simulations and are now well understood. A preliminary experiment on top-up injection has also been conducted with optimized configurations of the feedback system, demonstrating the potential of top-up injection near 1.89 GeV at BEPCII.

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来源期刊

Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment 物理-光谱学

CiteScore

3.20

自引率

21.40%

发文量

787

审稿时长

1 months

期刊介绍： Section A of Nuclear Instruments and Methods in Physics Research publishes papers on design, manufacturing and performance of scientific instruments with an emphasis on large scale facilities. This includes the development of particle accelerators, ion sources, beam transport systems and target arrangements as well as the use of secondary phenomena such as synchrotron radiation and free electron lasers. It also includes all types of instrumentation for the detection and spectrometry of radiations from high energy processes and nuclear decays, as well as instrumentation for experiments at nuclear reactors. Specialized electronics for nuclear and other types of spectrometry as well as computerization of measurements and control systems in this area also find their place in the A section. Theoretical as well as experimental papers are accepted.