MICROMEGAS - A HIGH-GRANULARITY POSITION-SENSITIVE GASEOUS DETECTOR FOR HIGH PARTICLE-FLUX ENVIRONMENTS

Authors
GIOMATARIS Y REBOURGEARD P ROBERT JP CHARPAK G
Citation
Y. Giomataris et al., MICROMEGAS - A HIGH-GRANULARITY POSITION-SENSITIVE GASEOUS DETECTOR FOR HIGH PARTICLE-FLUX ENVIRONMENTS, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 376(1), 1996, pp. 29-35
Citations number
8
Categorie Soggetti
Nuclear Sciences & Tecnology","Physics, Particles & Fields","Instument & Instrumentation",Spectroscopy
Journal title
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment → ACNP
ISSN journal
01689002
Volume
376
Issue
1
Year of publication
1996
Pages
29 - 35
Database
ISI
SICI code
0168-9002(1996)376:1<29:M-AHPG>2.0.ZU;2-Z
Abstract
We describe a novel structure for a gaseous detector that is under dev elopment at Saclay. It consists of a two-stage parallel-plate avalanch e chamber of small amplification gap (100 mu m) combined with a conver sion-drift space. It follows a fast removal of positive ions produced during the avalanche development. Fast signals (less than or equal to 1 ns) are obtained during the collection of the electron avalanche on the anode microstrip plane. The positive ion signal has a duration of 100 ns. The fast evacuation of positive ions combined with the high gr anularity of the detector provide a high rate capability. Gas gains of up to 10(5) have been achieved.