The Delphi Hadron Calorimeter Module Characteristics in the Saturated Proportional Mode of Its Detector Operation

NA FILATOVA,YN GOTRA,RB KADYROV,VN POZDNYAKOV,VN RYZHOV,AB SADOVSKY,T SPASSOV,VG TIMOFEEV,EN TSYGANOV,IA TYAPKIN,AS VODOPIANOV,NI ZIMIN,AI ZINCHENKO

Nuclear instruments and methods in physics research Section A, Accelerators, spectrometers, detectors and associated equipment/Nuclear instruments & methods in physics research Section A, Accelerators, spectrometers, detectors and associated equipment（1989）

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Abstract

A preamplifier allowing an increase in the sensitivity of the already produced DELPHI Hadron Calorimeter front-end electronics up to 0.1 pC is described. The presented preamplifier permits a considerable reduction of the gas gain and transition to the saturated avalanche mode region. The HC barrel module characteristics in the proportional mode of its detector operation are explored. The possibility of selecting muon tracks in the HC and using them for detector triggering has been investigated. It is shown that the transition to the proportional mode does not worsen the main characteristics of the HC and the reliability of its detectors will be considerably increased.

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