Resistive plate chamber performance in the BaBar IFR system

Author

Anulli, F. ; Bagnasco, S. ; Baldini, R. ; Band, H.R. ; Bionta, R. ; Brau, J.E. ; Brigljevic, V. ; Buzzo, A. ; Calcaterra, A. ; Carpinelli, M. ; Cartaro, C. ; Cavallo, N. ; Crosetti, G. ; De Sangro, R. ; De Nardo, G. ; Eichenbaum, A. ; Fabozzi, F. ; Falcia

Author_Institution

Lab. Nazionali di Frascati, Ist. Nazionale di Fisica Nucl., Frascati, Italy

Volume

49

Issue

3

fYear

2002

fDate

6/1/2002 12:00:00 AM

Firstpage

888

Lastpage

893

Abstract

The BaBar Collaboration has operated a system covering over 2000 m² with resistive plate chambers for nearly three years. The chambers are constructed of bakelite sheets separated by 2 mm. The inner surfaces are coated with linseed oil. This system provides muon and neutral hadron detection for BaBar. Installation and commissioning were completed in 1998, and operation began mid-1999. While initial performance of the system reached design, over time, a significant fraction of the resistive plate chambers demonstrated significant degradation, marked by increased currents and reduced efficiency. A coordinated investigative effort has identified many of the elements responsible for the degradation.

Keywords

streamer chambers; BaBar IFR system; BaBar instrumented flux return; bakelite sheets; particle tracking; resistive plate chamber performance; Collaboration; Conductivity; Degradation; Detectors; Iron; Mesons; Particle tracking; Petroleum; Production; Surface treatment;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/TNS.2002.1039584

Filename

1039584