Front end electronics for the Jet Drift Chamber

Author

Lo, C.C. ; Olson, S. ; Bistirlich, J.

Author_Institution

Lawrence Berkeley Lab., CA, USA

Volume

36

Issue

1

fYear

1989

fDate

2/1/1989 12:00:00 AM

Firstpage

462

Lastpage

464

Abstract

The Jet Drift Chamber uses a charge-division readout scheme which requires two amplifiers per sense wire. Since there are 690 sense wires, 1380 amplifiers are needed. It follows that each end cap must accommodate 690 amplifiers, which makes packaging and cooling critical problems. To address these problems, 30 six-layer surface-mount boards, each containing 24 (23 used) amplifiers channels, have been fabricated. Each amplifier can accept up to 2 pC of charge and provide a linear differential output of ±300 mV, which is used to drive a twisted-pair transmission line up to 70 ft in length. The power dissipation of each board is 1.5 W

Keywords

data acquisition; nuclear electronics; position sensitive particle detectors; proportional counters; 1.5 W; Jet Drift Chamber; amplifiers; amplifiers channels; charge-division readout scheme; cooling; front-end electronics; packaging; power dissipation; sense wire; six-layer surface-mount boards; twisted-pair transmission line; Capacitors; Circuits; Crosstalk; Differential amplifiers; Packaging; Power amplifiers; Power dissipation; Power transmission lines; Resistors; Wire;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.34483

Filename

34483