Nuclear Techniques ›› 2017, Vol. 40 ›› Issue (6): 60404-060404.doi: 10.11889/j.0253-3219.2017.hjs.40.060404


A distributed data readout method for quality control of CBM-TOF super module detector

ZHANG Yaxi1,2, CAO Ping1,3, HUANG Xiru1,2, ZHENG Jiajun1,2, JIANG Di1,2, AN Qi1,2   

  1. 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;
    3 School of Nuclear Science and Technology, University of Science and Technology of China, Hefei 230026, China
  • Received:2017-01-30 Revised:2017-03-15 Online:2017-06-10 Published:2017-06-06
  • About author:10.11889/j.0253-3219.2017.hjs.40.060404
  • Supported by:
    Supported by National Basic Research Program (973 Program) (No.2015CB856906), Key Laboratory of Neutron Physics of China Academy of Engineering Physics (No.2014AC03)

Abstract: Background: The time-of-flight (TOF) detector is a key component in the compressed baryonic matter (CBM) experiment at the facility for antiproton and ion research (FAIR). It utilizes super module detectors to achieve high-denseness, high-precision particle flight time measurement. Each super module supports up to 320 channels of high-precision time measurement capabilities, and the data transfer will reach up to 6-Gbit·s-1 peak rate. Purpose: This study aims at the quality control of data readout system for CBM-TOF super module. Methods: First of all, the background and readout methods in similar TOF detectors were introduced. Then a distributed data readout method and related software framework was proposed to meet the quality control readout requirements by using the system on chip (SOC) techniques. Finally, a prototype software was implemented under Linux operating system to test and verify the feasibility of the distributed data readout method. Results: The read-out board (ROB) prototype module for a single data transmission path achieved approximate 467-Mbit·s-1 data transfer rate in the case of full-link. Both data acquisition and status monitoring of each component of CBM-TOF were implemented properly in the software. Conclusion: The distributed data readout method and the related prototype software implementation can be used for quality control of CBM-TOF super module readout.

Key words: CBM-TOF super module, Distributed data transmission, Gigabit Ethernet

CLC Number: 

  • TL8