Speaker
Mr
Alexandr Kasatov
(Budker INP SB RAS)
Description
Erosion is highly increased under impact of intense transient heat loads corresponding to ELM type I events in ITER. The heightened erosion is associated with melt layer creation and ejection of dust particles.
High power electron beam (up to 10 MW, up to 0.3 ms) is employed for experimental simulation of the impact of intense transient heat loads at the level expected for ELMs type I in ITER on metal surfaces. The impact produced by the electron beam on metal target is characterized by small direct pressure and low vapor shield effect, which differentiate it from that attained with plasma guns and lasers.
Small angle continuous wave laser light scattering and fast imaging of droplets are employed for observation of dynamics of dust particles emitted from the target during and after heating pulse.
Imaging of hot particles without laser illumination with 7$\mu$s exposition enables measurement of particle velocities after heating pulse. Gradual decrease in particle velocity with the delay from heating termination is clearly observed.
Primary author
Mr
Alexandr Kasatov
(Budker INP SB RAS)
Co-authors
Prof.
Aleksandr Burdakov
(Budker INP SB RAS)
Dr
Aleksey Arakcheev
(Budker INP SB RAS)
Alexander Vasilyev
(Budker INP SB RAS, Novosibirsk State University)
Dr
Andrey Shoshin
(Budker INP SB RAS)
Dr
Dmitriy Skovorodin
(Budker INP SB RAS)
Mr
Igor Kandaurov
(Budker INP SB RAS)
Dr
Leonid Vyacheslavov
(Budker INP SB RAS)
Mr
Victor Kurkuchekov
(Budker INP SB RAS)
Mr
Vladimir Popov
(Budker INP SB RAS)
Mr
Yuriy Trunev
(Budker INP SB RAS)
