An internally reflecting Cherenkov detector (DIRC): properties of the fused silica radiators

Author

Adam, I. ; Alcksan, R. ; Aston, D. ; Bailly, P. ; Beigbeder, C. ; Benayoun, M. ; Benkebil, M. ; Bonneaud, G. ; Breton, D. ; Briand, H. ; Brown, Dean ; Bourgeois, P. ; Chauveau, J. ; Cizeron, R. ; Cohen-Tanugi, J. ; Convery, M. ; David, Peter ; De La Vaiss

Volume

45

Issue

3

fYear

1998

fDate

6/1/1998 12:00:00 AM

Firstpage

450

Lastpage

455

Abstract

The DIRC, a new type of ring-imaging Cherenkov detector that images internally reflected Cherenkov light, is being constructed as the main hadronic particle identification component of the BABAR detector at SLAC. The device makes use of 5 meter long fused silica (colloquially called quartz) bars, which serve both as the Cherenkov radiators and as light pipes for transmitting the light to an array of photo-multiplier tubes. This paper describes a program of research and development-aimed at determining whether bars that meet the stringent requirements of the DIRC can be obtained from commercial sources. The results of studies of bulk absorption of fused silica, surface finish, radiation damage and bulk inhomogeneities are discussed

Keywords

Cherenkov counters; quartz; Absorption; Bars; Cyclotrons; Detectors; Laboratories; Linear accelerators; Optical arrays; Physics; Research and development; Silicon compounds;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.682425

Filename

682425