A low noise amplification chain for the vacuum phototriode readout of the DELPHI lead-glass calorimeter
[en] In this paper we describe the low noise electronic amplification chain designed for the readout of the one-stage vacuum photomultipliers (phototriodes) of the DELPHI lead-glass calorimeter. A mean open input electronic noise of 166 e- rms has been obtained with unipolar shaping. For completely mounted phototriodes in a situation very close to the final experimental setup and bipolar shaping we get a mean noise of 292 e- rms. Very good immunity against acoustic noise has been obtained. The gain stability during six months of operation is better than ±0.3%. (orig.)
Journal
Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment; ISSN 0168-9002; 
; CODEN NIMAE; v. 254(1); p. 111-117
; CODEN NIMAE; v. 254(1); p. 111-117