Emissivity measurement of the ITER-like plasma facing components of the WEST phase 2: Pre-exposure measurements and first WEST exposure

• DOI: 10.1016/j.nme.2022.101305
• Publication Date: 2022-11-14T14:58:31Z
• Authors: J. Gaspar; F. Rigollet; N. Ehret; Y. Anquetin; E. Bernard; Y. Corre; M. Diez; M. Firdaouss; M. Houry; T. Loarer; C. Martin; M. Missirlian; P. Moreau; C. Pocheau; P. Reihlac; M. Richou; E. Tsitrone
• Keywords: Heat load; Deposition; High heat

This paper summarizes the emissivity measurements performed on shaped ITER-like plasma facing units (PFU) of WEST lower divertor installed for second phase WEST. Laboratory before their installation in WEST, as well measurement one PFU after exposure to an experimental campaign are shown. The 24 standard show variability from 0.07 0.2 even a serial production. Measurements high heat flux tests (10 MW/m2 cycles) two different facilities modification induced by this load capability test with mainly decrease area. Finally, exposed exhibit complex pattern strong variation 0.05 net erosion area at strike point locations up 0.85 deposition close location.