Novel electron beam based test facility for observation of dynamics of tungsten erosion under intense ELM-like heat loads

A test facility developed at the Budker Institute is designed for experimental simulation of effects of ITER-scale transient heat loads on plasma facing materials. Employing a long-pulse electron beam for creation of transients has advantages of low direct pressures on surface of material and lesser...

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Bibliographic Details
Main Authors: Vyacheslavov, Leonid, Arakcheev, Aleksey, Burdakov, Alexander, Kandaurov, Igor, Kasatov, Alexandr, Kurkuchekov, Victor, Mekler, Konstantin, Popov, Vladimir, Shoshin, Andrey, Skovorodin, Dmitriy, Trunev, Yuriy, Vasilyev, Alexander
Format: Conference Proceeding
Language:English
Subjects:
Continuous wave lasers
Ejection
Electron beams
Erosion rate
Infrared imaging
Loads (forces)
Shielding
Tungsten
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Summary:A test facility developed at the Budker Institute is designed for experimental simulation of effects of ITER-scale transient heat loads on plasma facing materials. Employing a long-pulse electron beam for creation of transients has advantages of low direct pressures on surface of material and lesser limitation of power density by vapor shielding. In addition, relative modest attendant background light allows using a set of diagnostics for observation of erosion dynamics. The set includes fast imaging in the near infrared, scattering of light of continuous wave laser on target surface and on droplets ejected from the melt layer.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.4964212