A sensitivity analysis of numerical predictions for beryllium erosion and migration in ITER

• DOI: 10.1016/j.nme.2021.100904
• Publication Date: 2021-01-14T23:06:49Z
• Authors: J. Romazanov; S. Brezinsek; R.A. Pitts; A. Kirschner; A. Eksaeva; D. Borodin; E. Veshchev; V.S. Neverov; A.B. Kukushkin; A.G. Alekseev; Ch. Linsmeier
• Keywords: Erosion; ITER; ERO2.0; TK9001-9401; 0103 physical sciences; Nuclear engineering. Atomic power; info:eu-repo/classification/ddc/624; Beryllium; 01 natural sciences; 7. Clean energy; Migration

The present study addresses the uncertainties that affect the recently performed predictions of beryllium (Be) erosion and migration in ITER using the Monte-Carlo code ERO2.0. The focus of the study is a D–T baseline discharge with fusion power gain Q=10, scrape-off layer (SOL) input power PSOL=100MW, toroidal plasma current Ip=15MA, and central toroidal field Bt=5.3T. The parameter studies used to investigate uncertainties include variations of the radial extrapolation of plasma parameters in the far-SOL (scan A), the assumptions on impact angle distributions (scan B) and the anomalous transport of eroded Be (scan C). Variations by factors ∼3, ∼18and ∼2for scans A, B and C, respectively, are found.