6533b85ffe1ef96bd12c114b

RESEARCH PRODUCT

Fuel inventory and material migration of JET main chamber plasma facing components compared over three operational periods

J.p. CoadL. AvotinaA. Baron-wiechecJet ContributorsKalle HeinolaS. AleiferisVictoria CorregidorEduardo AlvesI. JepuAnna WiddowsonC. MakepeaceNorberto Catarino

subject

DESORPTIONMaterials scienceEROSIONJET ITER-like wallchemistry.chemical_element01 natural sciences114 Physical sciences010305 fluids & plasmasmaterial migrationDesorption0103 physical sciencesDEPOSITION010306 general physicsMathematical PhysicsJet (fluid)ITER-LIKE-WALLDivertorMetallurgyPlasmaCondensed Matter PhysicsberylliumAtomic and Molecular Physics and Opticsfuel retentionchemistryINNER WALLErosionDIVERTORBerylliumDeposition (chemistry)

description

Fuel retention and material migration results from JET ITER-like wall beryllium limiter tiles are presented for three operating periods. Ion beam analysis results support the general picture of erosion during limiter configurations with local deposition on tile ends far into the scrape off layer. Similar trends of fuel concentrations are observed in all JET operating periods; (i) low on surfaces exposed to high heat flux and erosion and (ii) higher in deposits. The pattern of fuel retention and deposition correlates with heat flux and distribution of limiter plasmas touching inner and outer limiters. The D/Be ratio in the thickest deposit is similar to 0.01. Global fuel retention attributed to limiters is Peer reviewed

yearjournalcountryeditionlanguage
2020-01-01
10.1088/1402-4896/ab5350http://hdl.handle.net/10138/339912