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Chinese Physics C> 2016, Vol. 40> Issue(1) : 016101 DOI: 10.1088/1674-1137/40/1/016101

Analog front-end prototype electronics for the LHAASO WCDA

  • 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

  • In the readout electronics of the Water Cerenkov Detector Array (WCDA) in the Large High Altitude Air Shower Observatory (LHAASO) experiment, both high-resolution charge and time measurement are required over a dynamic range from 1 photoelectron (P.E.) to 4000 P.E. The Analog Front-end (AFE) circuit is one of the crucial parts in the readout electronics. We designed and optimized a prototype of the AFE through parameter calculation and circuit simulation, and conducted initial electronics tests on this prototype to evaluate its performance. Test results indicate that the charge resolution is better than 1%@4000 P.E. and remains better than 10%@1 P.E., and the time resolution is better than 0.5 ns RMS, which is better than the application requirements.
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  • References

    [1] H. H. He et al, LHAASO Project: Detector Design and Prototype, in Proc. of the 31st ICRC (LOEZ, Poland, 2009)
    [2] Z. Cao, Chin. Phys. C (HEP NP), 34(2): 249-252 (2010)
    [3] M. J. Chen et al, RD of LHAASO-WCDA, in Proc. of the 32nd ICRC (Beijing, China, 2011)
    [4] Z .G. Yao et al, Design Performance of LHAASO-WCDA Experiment, in Proc. of the 32nd ICRC (Beijing, China, 2011)
    [5] L. Zhao et al, Chin. Phys. C, 38(1): 016101-1 (2014)
    [6] Z. Wang et al, Design of Prototyping PMT Electronic System for Daya Bay Reactor Neutrino Experiment, in Proc. of the IEEE Conf. on Nucl. Sci. Sym. Dresden (Germany, 2008), N30-456: 2611-2613
    [7] S. B. Liu et al, IEEE Trans. Nucl. Sci., 57(2): 419-427 (2010)
    [8] A. Achterberg et al (IceCube Collaboration), Astropart Phys., 26(3): 155-173 (2006)
    [9] C. F. Ye, L. Zhao et al, Rev. Sci. Instrum., 85(4): 045115-045115-7 (2014)
    [10] Paul W. T. Spice: A Guide to Circuit Simulation and Analysis Using PSpice, Third edition (New Jersey, USA: Prentice Hall PTR Upper Saddle River Inc., 1995)
    [11] X. Y. Li et al, A Low Noise Charge Sensitive Amplifier with Adjustable Leakage Compensation in 0.18 m CMOS, in Proc. of the IEEE International Conf. on Electron Devices and Solid-State Circuits (Hong Kong, 2010)
    [12] Bruce Carter, Ron Mancini, Op Amps For Everyone (Third edition, Newnes: Elsevier Inc., 2009), p. 176-179
    [13] Boutot J. P, Pietri G, IEEE Trans On Elec. Dev. ED-17(7): 493-495 (1970)
    [14] Goulding F. S, Landis D. A, IEEE Trans. Nucl. Sci., 35(1): 119-124 (1988)
    [15] Qin Xi et al, Nucl. Sci. and Tech., 21: 366-369 (2010)

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Cong Ma, Lei Zhao, Yu-Xiang Guo, Jian-Feng Liu, Shu-Bin Liu and Qi An. Analog front-end prototype electronics for the LHAASO WCDA[J]. Chinese Physics C, 2016, 40(1): 016101. doi: 10.1088/1674-1137/40/1/016101
Cong Ma, Lei Zhao, Yu-Xiang Guo, Jian-Feng Liu, Shu-Bin Liu and Qi An. Analog front-end prototype electronics for the LHAASO WCDA[J]. Chinese Physics C, 2016, 40(1): 016101.  doi: 10.1088/1674-1137/40/1/016101 shu
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Received: 2015-04-24
Revised: 2015-09-01
Fund

    Supported by Knowledge Innovation Program of the Chinese Academy of Sciences (KJCX2-YW-N27), National Natural Science Foundation of China (11175174) and CAS Center for Excellence in Particle Physics (CCEPP)

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Analog front-end prototype electronics for the LHAASO WCDA

    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
  • Received Date: 2015-04-24
  • Accepted Date: 2015-09-01
  • Available Online: 2016-01-20
Fund Project:  Supported by Knowledge Innovation Program of the Chinese Academy of Sciences (KJCX2-YW-N27), National Natural Science Foundation of China (11175174) and CAS Center for Excellence in Particle Physics (CCEPP)

Abstract: In the readout electronics of the Water Cerenkov Detector Array (WCDA) in the Large High Altitude Air Shower Observatory (LHAASO) experiment, both high-resolution charge and time measurement are required over a dynamic range from 1 photoelectron (P.E.) to 4000 P.E. The Analog Front-end (AFE) circuit is one of the crucial parts in the readout electronics. We designed and optimized a prototype of the AFE through parameter calculation and circuit simulation, and conducted initial electronics tests on this prototype to evaluate its performance. Test results indicate that the charge resolution is better than 1%@4000 P.E. and remains better than 10%@1 P.E., and the time resolution is better than 0.5 ns RMS, which is better than the application requirements.

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