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Top-Up注入模式下BESIII数据质量研究及离线事例过滤

17 Aug 2021, 16:42
2m
Poster 5. 粒子物理实验技术 Poster Session

Speaker

ZHANG Jiawei

Description

Top-up注入模式是加速器的一项新的束流注入模式,在保持对撞流强的近似恒定的同时,缩短了之前束流注入的死时间,有效提高了积分亮度。BESⅢ实验在2019年底首次使用了这项技术,在相同时间内积分亮度提高了近30%。但Top-up模式在束流注入过程中不可避免带来高的束流本底和噪声,影响数据质量。通过对Top-up模式下所取数据的束流本底和噪声的研究,我们结合在线触发和离线处理,设计了完善的离线过滤算法,并对BESIII离线数据处理流程进行了升级,在保证高积分亮度的同时,有效改善了数据质量。

Primary author

Co-author

Dr Linghui Wu (IHEP)

Presentation materials

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