Data acquisition system for Belle II
Data acquisition system for Belle II
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DOI：
10.1088/1748-0221/5/12/c12004
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发表时间：
2010-12
影响因子：
1.3
通讯作者：
M. Nakao;T. Higuchi;R. Itoh;S. Suzuki
中科院分区：
文献类型：
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作者：
M. Nakao;T. Higuchi;R. Itoh;S. Suzuki
在SuperKEKB对撞机的贝儿II升级中，我们预计在8 × 1035 cm−2s−1的设计光度下，约20 kHz的一级触发率，比KEKB给出的世界纪录高40倍。贝儿II数据采集系统设计用于以高达30 kHz的频率从整个探测器中读取数据，由于前端缓冲器结构，死区时间最少为百分之几。该系统由触发和定时分配子系统、数据链路子系统、事件生成子系统和高级触发子系统组成。我们提出的系统是为了准备在2014年开始的贝儿II。
At the Belle II upgrade at the SuperKEKB collider, we expect about 20 kHz level-1 trigger rate at the design luminosity of 8 × 1035 cm−2s−1 which is 40 times higher than the world record given by KEKB. The Belle II data acquisition system is designed to read out the data from the entire detector at up to 30 kHz, with minimum amount of deadtime of several percent that is unavoidable due to the front-end buffer structure. The system consists of subsystems for trigger and timing distribution, data links, event building and high level triggering. We present the system which is designed to be ready for the start of Belle II in 2014.