The output window of a large-area accelerator with an increased electron-beam current density

The results of theoretical and experimental investigations of a large-area accelerator with a new type of output window are presented. With this window, it is possible to increase the current density of the extracted electron beam, reduce the operating temperature of the foil, and extend its service...

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Bibliographic Details
Published in:Instruments and experimental techniques (New York) 2017-07, Vol.60 (4), p.570-574
Main Authors: Baranov, G. A., Gurashvili, V. A., Djigailo, I. D., Kazachenko, N. I., Kosogorov, S. L., Kretinin, A. Yu, Kuzmin, V. N., Marabyan, A. S., Pavluchenkov, V. F., Sen, V. I., Smirnov, S. A., Tumanov, I. A., Tkachenko, D. Yu, Uspensky, N. A., Shvedyuk, V. Ya
Format: Article
Language:English
Subjects:
Cooling
Current density
Current loss
Electrical Engineering
Foils
General Experimental Techniques
Interception
Measurement Science and Instrumentation
Operating temperature
Physical Chemistry
Physics
Physics and Astronomy
Service life
Structural members
Thermoelectricity
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Summary:The results of theoretical and experimental investigations of a large-area accelerator with a new type of output window are presented. With this window, it is possible to increase the current density of the extracted electron beam, reduce the operating temperature of the foil, and extend its service life. A two-level support structure with cooling of each level is used for this purpose. The heat load of the foil mounted on the second level of the support structure that carries the main mechanical load is reduced by partial interception of the thermal power due to direct loss of the electron beam, which is released on the first level experiencing no mechanical load. The current loss at the structural elements of the output window is estimated, and the hydraulic characteristics and foil temperature in the output device are calculated. A higher current density of the beam extracted over the foil is attained in comparison with the conventional design of the support structure.
ISSN:0020-4412
1608-3180
DOI:10.1134/S0020441217030174