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 ›› 2011, Vol. 22 ›› Issue (3): 178-184 doi: 10.13538/j.1001-8042/nst.22.178-184


A digitalizing board for the prototype array of LHAASO WCDA

HAO Xinjun~(1,2)LIU Shubin~(1,2)ZHAO Lei~(1,2)AN Qi~(1,2,*)   

  1. 1 State Key Laboratory of Particle Detection & Electronics,Hefei 230026,China 2 Anhui Key Laboratory of Physical Electronics,Department of Modern Physics,University of Science and technology of China,Hefei 230026,China
HAO Xinjun, LIU Shubin, ZHAO Lei, AN Qi. A digitalizing board for the prototype array of LHAASO WCDA.Nuclear Science and Techniques, 2011, 22(3): 178-184     doi: 10.13538/j.1001-8042/nst.22.178-184


In this paper,a digitalizing board for readout of PMT signals in the prototype array of WCDA(water Cerenkov detector array)for LHAASO(Large high altitude air shower observatory)is designed.The prototype array is composed of 9 PMTs,including the pulse time and charge measurement from the PMTs,and clock generation and trigger decision.In the digitalizing board,FPGA reconfiguration and data readout via VME bus are implemented.Test results show that the performances meet well with the requirements of readout electronics.It has been installed in Yangbajing and tests with the prototype array and DAQ is ongoing.

Key words: PMT, Time measurement, Charge measurement, FPGA reconfiguration, VME bus