DocumentCode :
844155
Title :
Health Physics Aspects of 20- to 40-MeV Linac Operations
Author :
Slaback, Lester A., Jr.
Author_Institution :
Armed Forces Radiobiology Research Institute, Bethesda, MD 20014
Volume :
26
Issue :
1
fYear :
1979
Firstpage :
1584
Lastpage :
1586
Abstract :
The AFRRI electron linear accelerator is a two-mode, high-current (1-3 A) LINAC used for research in radiobiology, biological inactivation, and radiation effects on electronic devices. Operations are predominantly in the ranges of 13-20 MeV and 35-40 MeV, which results in contrasting health physics problems. Low-energy operations are dominated by the production of toxic gas (ozone) and by some localized activation for bremsstrahlung operations. Ozone concentration is constantly monitored for electron-in-air operations. Problems with high-energy operations are related to target configuration and experimental design. This includes activation of various machine and experimental components and activation of room air. For some operations, ozone can also be a serious problem. A monitoring system was devised to distinguish between the 15O and 13N air-activation components. Cooling water activation, resin bed activity levels, klystron X ray leakage, removable surface contamination, and gamma and neutron streaming are seen, but have not been significant problems.
Keywords :
Cooling; Design for experiments; Electrons; Linear accelerators; Linear particle accelerator; Production; Radiation effects; Radiation monitoring; Resins; Water pollution;
fLanguage :
English
Journal_Title :
Nuclear Science, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9499
Type :
jour
DOI :
10.1109/TNS.1979.4330443
Filename :
4330443
Link To Document :
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