Micromegas, a microstrip detector for Compass

Citation
P. Abbon et al., Micromegas, a microstrip detector for Compass, NUCL INST A, 461(1-3), 2001, pp. 29-32
Citations number
3
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
ISSN journal
0168-9002 → ACNP
Volume
461
Issue
1-3
Year of publication
2001
Pages
29 - 32
Database
ISI
SICI code
0168-9002(20010401)461:1-3<29:MAMDFC>2.0.ZU;2-R
Abstract
Recent results obtained with a gaseous microstrip detector Micromegas devel oped for the tracking in the high-rate environment of the COMPASS experimen t at CERN are presented. A 26 x 36cm(2) prototype equipped with the low-noi se preamplifier SFE16 was tested in a high-energy hadron beam at CERN. With a gas mixture based on neon, the full efficiency of tile Micromegas protot ype is obtained at a gain of 6400; the spatial resolution is 50 mum and the time jitter 8.5 ns. We have studied the problem of discharges that affect this kind of microstrip detector, and found that, at fixed gain, the probab ility of discharge is higher for heavier gas mixtures in the detector. In t he conditions of the COMPASS experiment, discharges are kept at a low rate. (C) 2001 Elsevier Science B.V. All rights reserved.