TY  - JOUR
AU  - Spilker, Benjamin
AU  - Linke, Jochen
AU  - Pintsuk, Gerald
AU  - Wirtz, Marius
TI  - Experimental Study of ELM-Like Heat Loading on Beryllium under ITER Operational Conditions
JO  - Physica scripta
VL  - T167
SN  - 0031-8949
CY  - Bristol
PB  - IoP Publ.
M1  - FZJ-2016-02296
SP  - 014024
PY  - 2016
AB  - The experimental fusion reactor ITER, currently under construction in Cadarache, France, is transferring the nuclear fusion research to the power plant scale. ITER's first wall (FW), armoured by beryllium, is subjected to high steady state and transient power loads. Transient events like edge localized modes not only deposit power densities of up to 1.0 GW m−2 for 0.2–0.5 ms in the divertor of the machine, but also affect the FW to a considerable extent. Therefore, a detailed study was performed, in which transient power loads with absorbed power densities of up to 1.0 GW m−2 were applied by the electron beam facility JUDITH 1 on beryllium specimens at base temperatures of up to 300 °C. The induced damage was evaluated by means of scanning electron microscopy and laser profilometry. As a result, the observed damage was highly dependent on the base temperatures and absorbed power densities. In addition, five different classes of damage, ranging from 'no damage' to 'crack network plus melting', were defined and used to locate the damage, cracking, and melting thresholds within the tested parameter space.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000383504700025
DO  - DOI:10.1088/0031-8949/T167/1/014024
UR  - https://juser.fz-juelich.de/record/808663
ER  -