High-bandwidth multichannel fiber optic system for measuring gamma rays
We describe an analog fiber optic gamma-ray diagnostic system that can transmit signals through fiber cables 600 to 700 m long with a system bandwidth exceeding 1 GHz and measure the relative timing between signals to within 0.3 ns. Gamma rays are converted to visible light via the Cerenkov process in a short length of a radiation-resistant optical fiber. A graded-index optical fiber transmits this pulse to a recording station where the broadened pulse is compensated for material dispersion and recorded using a streak camera. The streak camera can simultaneously record 20 to 30 data channels on a single piece of film. The system has been calibrated using electron linear accelerators and fielded on two experiments.
- Research Organization:
- Lawrence Livermore National Lab., CA (USA)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 6891922
- Report Number(s):
- UCRL-90497; CONF-840872-6; ON: DE84014526
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
CALIBRATION
CHERENKOV RADIATION
DETECTION
ELECTROMAGNETIC RADIATION
EXPLOSIONS
FIBER OPTICS
GAMMA DETECTION
NUCLEAR EXPLOSIONS
PERFORMANCE
PHOTOGRAPHY
RADIATION DETECTION
RADIATIONS
STREAK PHOTOGRAPHY