SURFACE STREAMER BREAKDOWN MECHANISMS IN MICROSTRIP GAS COUNTERS

Authors
PESKOV V RAMSEY BD FONTE P
Citation
V. Peskov et al., SURFACE STREAMER BREAKDOWN MECHANISMS IN MICROSTRIP GAS COUNTERS, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 392(1-3), 1997, pp. 89-93
Citations number
15
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
392
Issue
1-3
Year of publication
1997
Pages
89 - 93
Database
ISI
SICI code
0168-9002(1997)392:1-3<89:SSBMIM>2.0.ZU;2-7
Abstract
We have studied breakdown mechanisms in MSGCs. For comparison, ''micro strip detectors'' without dielectric substrates were also tested. We f ound that detectors without substrates can always operate at gas gains 5-10 times higher than those with substrates, and that these higher g ains are limited by self-quenched streamers. In the case of microstrip detectors with substrates, streamers also occur, but have a very narr ow (in voltage) self-quench region and then transit rapidly to a ''gli ding'' discharge. We have tested new geometries of MSGC which allow hi gh gains (> 10(5)) to be reached.