New readout electronics for the venus liquid argon calorimeter at tristan

Y. Fukushima, J. Shirai, Y. Unno, R. Tanaka, H. Murakami

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8 Citations (Scopus)


A new readout electronics for the VENUS endcap liquid argon calorimeter was developed and has been operating for over a year at TRISTAN. The entire system was designed in such a way that gain of each readout channel could be calibrated to better than 1%. The system consists of 3840 channels of readout electronics. It employs hybrid charge sensitive amplifiers located in the 7.5kG magnetic field and TKO bus based electronics which consists of CR-(RC)4 filters, sample-and-hold circuits and 14bit ADCs. The energy resolution (σE/E for electromagnetic shower has been found to be 3.5% at 28GeV without any channel-by-channel gain calibration. The resolution was also determined to be σ E/E = 1.4% + 11.3%√E(GeV) from a large sample of 28 GeV Bhabha events and a small sample of e+ e → e+ e- γevents.

Original languageEnglish
Pages (from-to)670-674
Number of pages5
JournalIEEE Transactions on Nuclear Science
Issue number1
Publication statusPublished - 1989 Feb
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering
  • Electrical and Electronic Engineering


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