A Ring Image Cerenkov Detector for the CERN Omega Spectrometer

Author

Davenport, M. ; Deol, R S ; Flower, P S ; Giddings, D I ; Hallewell, G D ; Ikiades, A ; Morris, J A G ; Morris, J V ; Sharp, P H ; Uden, C N ; Eades, J ; Newton, D ; Ibbotson, M ; Thompson, R J ; Waterhouse, J ; Bunn, J J ; Danaher, S ; McClatchey, R H

Author_Institution

Rutherford Appleton Laboratory, Chilton, Didcot, Oxon, UK

Volume

30

Issue

1

fYear

1983

Firstpage

35

Lastpage

39

Abstract

A development program has been undertaken to produce a large ring image Cerenkov detector (RICH) for use at the CERN Omega Spectrometer. A prototype Cerenkov counter has been constructed and successfully operated in a high energy particle beam, Cerenkov rings having been observed in an experimental time projection chamber (TPC) using the photoionising agents Triethylamine (TEA) and Tetrakis (dimethylamine) ethylene (TMAE). Systematic measurements have been made of the optical properties of window materials and reflecting surfaces in the vacuum ultraviolet region. Results of these tests are presented, and the design of the large detector based on these experiences together with Monte Carlo simulations of the events expected in the WA69 experiment, is discussed.

Keywords

Counting circuits; Detectors; Optical materials; Particle beam measurements; Particle beam optics; Particle beams; Prototypes; Spectroscopy; Testing; Vacuum systems;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/TNS.1983.4332215

Filename

4332215