Author/Authors :
Kupriyanov، نويسنده , , Igor B. and Porezanov، نويسنده , , Nicolay P. and Nikolaev، نويسنده , , Georgyi N. and Kurbatova، نويسنده , , Liudmila A. and Podkovyrov، نويسنده , , Vyacheslav L. and Muzichenko، نويسنده , , Anatoliy D. and Zhitlukhin، نويسنده , , Anatoliy M. and Khimchenko، نويسنده , , Leonid N. and Gervash، نويسنده , , Alexander A.، نويسنده ,
Abstract :
Beryllium will be used as a plasma facing material for ITER first wall. It is expected that erosion of beryllium under transient plasma loads such as the edge-localized modes (ELMs) and disruptions will mainly determine a lifetime of ITER first wall. The results of recent experiments with the Russian beryllium of TGP-56FW ITER grade on QSPA-Be plasma gun facility are presented. The Be/CuCrZr mock-ups were exposed to upto 100 shots by deuterium plasma streams with pulse duration of 0.5 ms at ∼250 °C and average heat loads of 0.5 and 1 MJ/m2. Experiments were performed at 250 °C. The evolution of surface microstructure and cracks morphology as well as beryllium mass loss are investigated under erosion process.
Keywords :
First wall , Beryllium , Plasma irradiation , ITER , erosion , microstructure
