TRIPLEX: an amplification and trigger chip for a Si-strip microvertex detector

Author

Ardelean, J. ; Chase, R.L. ; Couchot, F. ; D´Almagne, B. ; Hrisoho, A. ; Trombini, A. ; Truong, K.

Author_Institution

Lab. de l´´Accelerateur Lineaire, Univ. de Paris-Sud, Orsay, France

Volume

2

fYear

1994

fDate

30 Oct-5 Nov 1994

Firstpage

727

Abstract

The TRIPLEX, a 128 channel integrated circuit, intended for use with the DELPHI Si-strip microvertex detector is described. It includes a sensitive differential discriminator per channel for participation in the DELPHI trigger. The discriminators, which compare sampled signals from before and after beam crossing, are servo-stabilized between beam crossings to provide uniform thresholds. The preamplifier noise (90 electrons+8 electrons per pF for a 1.5 microsecond peaking time) is compatible with a trigger threshold of less than 1/4 MIP. The 128 discriminator outputs are connected in wired-OR to the trigger output. An automatic mechanism is included to disconnect noisy channels from the trigger

Keywords

CMOS analogue integrated circuits; detector circuits; discriminators; nuclear electronics; position sensitive particle detectors; preamplifiers; silicon radiation detectors; trigger circuits; DELPHI Si-strip microvertex detector; DELPHI trigger; Si; TRIPLEX; amplification chip; discriminators; preamplifier noise; sensitive differential discriminator; trigger chip; trigger threshold; Capacitance; Capacitors; Circuits; Detectors; Electrons; Filtering; Noise shaping; Preamplifiers; Resistors; Switches;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium and Medical Imaging Conference, 1994., 1994 IEEE Conference Record

Conference_Location

Norfolk, VA

Print_ISBN

0-7803-2544-3

Type

conf

DOI

10.1109/NSSMIC.1994.474507

Filename

474507