Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2014, Vol. 25 ›› Issue (1): 010401 doi: 10.13538/j.1001-8042/nst.25.010401

• NUCLEAR ELECTRONICS AND INSTRUMENTATION • Previous Articles     Next Articles

A 16-Channel high-resolution time and charge measurement module for the external target experiment in the CSR of HIRFL

ZHAO Lei , KANG Long-Fei , ZHOU Jia-Wen , LIU Shu-Bin , AN Qi   

  1. 1State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei, 230026, China
    2Department of Modern Physics, University of Science and Technology of China, Hefei, 230026, China
  • Contact: AN Qi E-mail:anqi@ustc.edu.cn
  • Supported by:

    Supported by the Knowledge Innovation Program of the Chinese Academy of Sciences (No. KJCX2-YW-N27) and the National Natural Science Foundation of China (No. 11079003)

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ZHAO Lei, KANG Long-Fei, ZHOU Jia-Wen, LIU Shu-Bin, AN Qi . A 16-Channel high-resolution time and charge measurement module for the external target experiment in the CSR of HIRFL.Nuclear Science and Techniques, 2014, 25(1): 010401     doi: 10.13538/j.1001-8042/nst.25.010401

Abstract:

High precision time measurement is required in the readout of the neutron wall and TOF walls in the external target experiment of the Cooling Storage Ring (CSR) project in the Heavy Ion Research Facility in Lanzhou (HIRFL). Considering the time walk correction, both time and charge are measured in the readout electronics. In this 16-channel measurement module, time and charge information are digitized by TDCs at the same time based on the Time-Over-Threshold (TOT) method; meanwhile, by employing high-density ASIC chips, the electronics complexity is effectively reduced. Test results indicate that this module achieves a time resolution better than 25 ps and a charge resolution better than 5% over the input amplitude range from 50mV to 3 V.

Key words: Time and charge measurement, TOT, PMT, CSR