The electronics of the H1 lead/scintillating-fibre calorimeters

被引：2
|
作者：
Appuhn, RD
Ardnt, C
Barrelet, E
Barschke, R
Bassler, U
Blouzon, F
Boudry, V
Brasse, F
Bruel, P
Bruncko, D
Buchholz, R
Cahan, B
Chechelnitski, S
Claxton, B
Cozzika, G [1 ]
Cvach, J
Dagoret-Campagne, S
Dau, WD
Deckers, H
Deckers, T
Descamps, F
Dirkmann, M
Dowdell, J
Drancourt, C
Durant, O
Efremenko, V
Eisenhandler, E
Eliseev, AN
Falley, G
Ferencei, J
Fleischer, M
Fominykh, B
Gadow, K
Goerlach, U
Gorbov, LA
Gorelov, I
Grewe, M
Hajduk, L
Herynek, I
Hladky, J
Hütte, M
Hutter, H
Janata, M
Janczar, W
Janoth, J
Jönsson, L
Kacl, I
Kolanoski, H
Korbel, V
Kriván, F
机构：
[1] CEA Saclay, DSM, DAPNIA, F-91191 Gif Sur Yvette, France
[2] DESY, D-2000 Hamburg, Germany
[3] Univ Paris 06, LPNHE, IN2P3, CNRS, Paris, France
[4] Univ Paris 07, LPNHE, IN2P3, CNRS, Paris, France
[5] CNRS, IN2P3, Ecole Polytech, LPNHE, Palaiseau, France
[6] Slovak Acad Sci, Inst Expt Phys, Kosice 04353, Slovakia
[7] Inst Theoret & Expt Phys, Moscow 117259, Russia
[8] Rutherford Appleton Lab, Div Elect, Didcot OX11 0QX, Oxon, England
[9] Acad Sci Czech Republic, Inst Phys, Prague, Czech Republic
[10] Univ Kiel, Inst Reine & Angew Kernphys, D-2300 Kiel, Germany
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1999年 / 426卷 / 2-3期
关键词：
D O I：
10.1016/S0168-9002(99)00012-1
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
The electronic system developed for the SpaCal lead/scintillating-fibre calorimeters of the I-Il detector in operation at the HERA ep collider is described in detail and the performance achieved during H1 data taking is presented. The 10 MHz bunch crossing rate of HERA puts severe constraints on the requirements of the electronics. The energy and time readout are performed, respectively, with a 14-bit dynamic range and with a resolution of similar to 0.4 ns. The trigger branch consists of a nanosecond-resolution calorimetric time of flight for background rejection and an electron trigger based on analog 'sliding windows'. The on-line background rejection currently achieved is similar to 10(6). The electron trigger allows a low-energy trigger threshold to be set at similar to 0.50 +/- 0.08 (RMS) GeV with an efficiency greater than or equal to 99.9%. The energy and time performance of the readout and trigger electronics is based on a newly developed low noise (sigma(noise) similar to 0.4 MeV) wideband (f less than or equal to 200 mHz) preamplifier located at the output of the photomultipliers which are used for the fibre light readout in the similar to 1 T magnetic field of H1. (C) 1999 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：518 / 537
页数：20
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