New developments of micromegas detector

Citation
A. Delbart et al., New developments of micromegas detector, NUCL INST A, 461(1-3), 2001, pp. 84-87
Citations number
4
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
84 - 87
Database
ISI
SICI code
0168-9002(20010401)461:1-3<84:NDOMD>2.0.ZU;2-B
Abstract
A new type of micromesh, based on etching techniques, has been developed fo r the Micromegas detector. III this paper, we will briefly describe this ne w design and give some results about the performances obtained in different gas mixtures. The geometry of the mesh allows good uniformity of the elect rostatic field. An energy resolution of 11.7% full-width at half-maximum is obtained with X-rays at 5.9 keV and 5.4% at 22 keV in an argon/isobutane ( 90%/10%) gas mixture. This is a significant improvement for a gaseous detec tor operating at high gain (about 5000). (C) 2001 Elsevier Science B.V. All rights reserved.