Single-photoelectron noise reduction in scintillation detectors

Author

Marvin, Thomas P.

Author_Institution

Southern Oregon State Coll., Ashland, OR, USA

Volume

2

fYear

1995

fDate

21-28 Oct 1995

Firstpage

764

Abstract

The 1994-95 search at SLAC for millicharged particles used four 21×21×130-cm³ Bicron 408 scintillation counters to detect a signal at the single-photoelectron level. The competing noise requiring minimization was due to combination of PM tube (8-inch Thorne EMI 9353KA) afterpulsing and ambient radiation-induced scintillator luminescence. A very slow decay (>30 μs) component was observed and received particular attention. Efforts to reduce the SPE noise included photomultiplier tube base modifications, detector shielding and cooling, signal amplification, and veto procedures

Keywords

electron device noise; noise; photomultipliers; solid scintillation detectors; 130 cm; 21 cm; Bicron 408; Thorne EMI 9353KA; detector cooling; detector shielding; millicharged particles; photomultiplier afterpulsing; scintillation detectors; signal amplification; single-photoelectron noise reduction; veto procedures; Cooling; Copper; Linear accelerators; Luminescence; Noise measurement; Noise reduction; Photomultipliers; Radiation detectors; Scintillation counters; Solid scintillation detectors;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium and Medical Imaging Conference Record, 1995., 1995 IEEE

Conference_Location

San Francisco, CA

Print_ISBN

0-7803-3180-X

Type

conf

DOI

10.1109/NSSMIC.1995.510381

Filename

510381