Published August 21, 1998 | Version v1
Journal article Metadata-only

The monitoring system for the aerogel Cherenkov counter of the BELLE detector

Creators

  • 1. Saga Univ. (Japan). Dept. of Physics
  • 2. Physics Division, High Energy Accelerator Research Organization (KEK), Ibaraki 305-0801 (Japan)
  • 3. Department of Physics, Chiba University, Chiba 260-8522 (Japan)
  • 4. Applied Fiber Optics Section, Fujikura Limited, Sakura, Chiba 285-0812 (Japan)
  • 5. Department of Physics, Chuo University, Tokyo 112-8551 (Japan)
  • 6. Department of Physics, Tokyo Metropolitan University, Tokyo 192-0397 (Japan)

Description

We report on a design and performance of a monitoring system developed for the aerogel Cherenkov counters (ACC) of the BELLE detector. The system consists of blue LEDs, a diffuser box, and optical distributors which distribute the LED light to the ACC modules. The employed LED (NSPB series) has been observed to have high reliability on the long term stability and the temperature dependence. The diffuser box is employed to reduce the intrinsic non-uniformity of the LED light intensity. The overall performance of the present monitoring system on uniformity and intensity of the light output has been found to satisfy all the requirements for the monitoring. (orig.)

Additional details

Publishing Information

Journal Title
Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
Journal Volume
413
Journal Issue
2-3
Journal Page Range
p. 201-212
ISSN
0168-9002
CODEN
NIMAER

INIS

Country of Publication
Netherlands
Country of Input or Organization
Netherlands
INIS RN
29059693
Subject category
S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY;
Descriptors DEI
CHERENKOV COUNTERS; LIGHT EMITTING DIODES; MONITORING; OPTICAL SYSTEMS; RELIABILITY; STABILITY; TEMPERATURE DEPENDENCE
Descriptors DEC
MEASURING INSTRUMENTS; RADIATION DETECTORS; SEMICONDUCTOR DEVICES; SEMICONDUCTOR DIODES

Optional Information

Notes
17 refs.