An air scintillator

A method for bremsstrahlung dosimetry by air luminescence at high-power pulsed electron accelerators is considered. Light emitted in an air scintillator is focused by the lens at the tip of a quartz optical fiber and transmitted to the photocathode of a photomultiplier tube. The sensitivity of the m...

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Bibliographic Details
Published in:Instruments and experimental techniques (New York) 2011-05, Vol.54 (3), p.320-322
Main Authors: Tarasov, M. D., Gornostai-Pol’skii, S. A., Grunin, A. V., Lazarev, S. A., Petrushin, O. N.
Format: Article
Language:English
Subjects:
Electrical Engineering
Measurement Science and Instrumentation
Nuclear Experimental Technique
Physical Chemistry
Physics
Physics and Astronomy
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Summary:A method for bremsstrahlung dosimetry by air luminescence at high-power pulsed electron accelerators is considered. Light emitted in an air scintillator is focused by the lens at the tip of a quartz optical fiber and transmitted to the photocathode of a photomultiplier tube. The sensitivity of the measuring channel is determined using a standard ribbon lamp. Bremsstrahlung pulses producing an exposure of 0.18 C/kg at the bremsstrahlung beam axis in a ∼20-ns time interval are detected at the ЛИУ-30 electron accelerator with a high accuracy. This exposure corresponds to an absorbed dose rate, integrated over the beam diameter, of 7.5 × 10 7 Gy m/s.
ISSN:0020-4412
1608-3180
DOI:10.1134/S0020441211020096