The trigger system for the external target experiment in the HIRFL cooling storage ring

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Min Li, Lei Zhao, Jin-Xin Liu, Yi-Ming Lu, Shu-Bin Liu and Qi An. The trigger system for the external target experiment in the HIRFL cooling storage ring[J]. Chinese Physics C, 2016, 40(8): 086102. doi: 10.1088/1674-1137/40/8/086102
Min Li, Lei Zhao, Jin-Xin Liu, Yi-Ming Lu, Shu-Bin Liu and Qi An. The trigger system for the external target experiment in the HIRFL cooling storage ring[J]. Chinese Physics C, 2016, 40(8): 086102.  doi: 10.1088/1674-1137/40/8/086102 shu
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Received: 2015-12-21
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    Supported by the National Natural Science Foundation of China (11079003), the Knowledge Innovation Program of the Chinese Academy of Sciences (KJCX2-YW-N27), and the CAS Center for Excellence in Particle Physics (CCEPP).

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The trigger system for the external target experiment in the HIRFL cooling storage ring

    Corresponding author: Lei Zhao,
  • 1. State Key Laboratory of Particle Detection and Electronics,University of Science and Technology of China, Hefei 230026, China
  • 2. Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China
Fund Project:  Supported by the National Natural Science Foundation of China (11079003), the Knowledge Innovation Program of the Chinese Academy of Sciences (KJCX2-YW-N27), and the CAS Center for Excellence in Particle Physics (CCEPP).

Abstract: A trigger system was designed for the external target experiment in the Cooling Storage Ring (CSR) of the Heavy Ion Research Facility in Lanzhou (HIRFL). Considering that different detectors are scattered over a large area, the trigger system is designed based on a master-slave structure and fiber-based serial data transmission technique. The trigger logic is organized in hierarchies, and flexible reconfiguration of the trigger function is achieved based on command register access or overall field-programmable gate array (FPGA) logic on-line reconfiguration controlled by remote computers. We also conducted tests to confirm the function of the trigger electronics, and the results indicate that this trigger system works well.

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