The high-rate behavior of parallel mesh chambers

Author

Ivaniouchenkov, I. ; Fonte, P. ; Peskov, V. ; Ferreira-Marques, R. ; Policarpo, A.

Author_Institution

Lab. de Instrumentacao e Fisica Exp. de Particulas, Portugal

fYear

1997

fDate

9-15 Nov 1997

Firstpage

420

Abstract

Gas counters made from parallel metallic wire meshes have been proposed by Charpak et al. (1978) as a preamplifying stage to wire chambers and developed meanwhile by many workers. The concept leaded to very robust and versatile detectors, having evolved over time to include complex multistep structures. It is known that parallel geometry chambers can stand counting rates at least up to 10⁵ Hz/mm ² without any pulse-height degradation, suggesting their use as high-rate particle detectors. In this work we describe a study of the high-rate behavior of Parallel Mesh Chambers, measuring the maximum count rates achievable for a given avalanche charge and beam cross-section. The different breakdown regimes that appear at high counting rates are described and models are proposed

Keywords

multiwire proportional chambers; avalanche charge; beam cross-section; complex multistep structures; gas counters; high-rate behavior; high-rate particle detectors; parallel mesh chambers; parallel metallic wire meshes; pulse-height degradation; wire chambers; Charge measurement; Counting circuits; Current measurement; Degradation; Electric breakdown; Geometry; Particle beam measurements; Radiation detectors; Robustness; Wire;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium, 1997. IEEE

Conference_Location

Albuquerque, NM

ISSN

1082-3654

Print_ISBN

0-7803-4258-5

Type

conf

DOI

10.1109/NSSMIC.1997.672615

Filename

672615