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Performance of the electronics for the liquid argon calorimeter system of the SLC large detector

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4 Author(s)
Vella, E. ; Washington Univ., Seattle, WA, USA ; Abt, I. ; Haller, G.M. ; Honma, A.

Results of performance tests on electronics for the liquid argon calorimeter (LAC) for the SLD (Stanford Linear Collider Large Detector) experiment are presented. The behavior of a subunit called a tophat, which processes 720 detector signals is described. The electronics consists of charge-sensitive preamplifiers, analog memories, A/D (analog/digital) converters, and associated control and readout circuitry. An internal charge-injection system is used to calibrate the overall response of the devices. Linearity is better than 1% for 0-28-pC charge at the input of the amplifiers. Noise (expressed as equivalent input charge) is less than 3000 electrons at a shaping time of 4 μs, with a slope of 2600 e-/nF. Crosstalk to adjacent channels is less than 0.5%. The power consumption at a duty cycle of 13% is 61 W

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Nuclear Science, IEEE Transactions on  (Volume:36 ,  Issue: 1 )