Title :
Impact of high transient loads on beryllium damage
Author :
Kupriyanov, I.B. ; Basaleev, E.V. ; Nikolaev, G.N. ; Kurbatova, L.A. ; Podkovyrov, V.L. ; Muzichenko, A.D. ; Zhitlukhin, A.M. ; Khimchenko, L.N.
Author_Institution :
A.A. Bochvar Hich Technol. Res. Inst. of Inorg. Mater., Moscow, Russia
Abstract :
Beryllium will be used as a plasma facing material for ITER first wall. This paper presents the results of recent experiments with Russian beryllium of TGP-56FW ITER grade on QSPA-Be plasma gun facility. The beryllium targets were exposed to up to 100 shots with pulse duration of 0.5 ms and average heat loads of 1.7 and 2.1 MJ/m2. After 10, 40 and 100 shots, the evolution of surface microstructure and cracks morphology and beryllium mass loss/gain under erosion process on the beryllium surface were studied as well as the erosion products.
Keywords :
Tokamak devices; fusion reactor safety; fusion reactor targets; plasma guns; plasma toroidal confinement; plasma-wall interactions; ITER first wall; QSPA-Be plasma gun facility; Russian beryllium; TGP-56FW ITER grade; average heat loads; beryllium damage; beryllium mass gain; beryllium mass loss; beryllium surface; beryllium targets; cracks morphology; erosion process; erosion products; high transient loads; plasma facing material; pulse duration; surface microstructure evolution; Heating; Plasmas; Surface cracks; Surface morphology; Surface structures; Surface treatment; Transient analysis; Beryllium; erosion; first wall; heat load;
Conference_Titel :
Fusion Engineering (SOFE), 2013 IEEE 25th Symposium on
Conference_Location :
San Francisco, CA
Print_ISBN :
978-1-4799-0169-2
DOI :
10.1109/SOFE.2013.6635414
