Improved ERO modelling for spectroscopy of physically and chemically assisted eroded beryllium from the JET-ILW

Research output: Contribution to journalArticle

Authors

  • Dmitry Terentyev
  • Dmitry Borodin
  • Sebastijan Brezinsek
  • Irina Borodkina
  • Juri Romazanov
  • Dmitry Matveev
  • Andreas Kirschner
  • Andreas Kirschner
  • Ane Lasa
  • Kai Nordlund
  • Carolina Björkas
  • Markus I. Airila
  • Juho Miettunen
  • Mathias Groth
  • Mehdi Firdaouss
  • JET Contibutors

Institutes & Expert groups

  • FZJ - Forschungszentrum Jülich GmbH
  • NRNU MePhi - National Research Nuclear University MEPhI
  • ORNL - Oak Ridge National Laboratory
  • VTT - Technical Research Centre of Finland Ltd. - Finland
  • Aalto University
  • CEA Cadarache - Commissariat à l'Énergie Atomique

Documents & links

DOI

Abstract

Physical and chemical assisted physical sputtering were characterised by the Be I and Be II line and BeD band emission in the observation chord measuring the sightline integrated emission in front of the inner beryllium limiter at the torus midplane. The 3D local transport and plasma-surface interaction Monte-Carlo modelling (ERO code [18]) is a key for the interpretation of the observations in the vicinity of the shaped solid Be limiter. The plasma parameter variation (density scan) in limiter regime has provided a useful material for the simulation benchmark. The improved background plasma parameters input, the new analytical expression for particle tracking in the sheath region and implementation of the BeD release into ERO has helped to clarify some deviations between modelling and experiments encountered in the previous studies [4], [5]. Reproducing the observations provides additional confidence in our ‘ERO-min’ fit for the physical sputtering yields for the plasma-wetted areas based on simulated data.

Details

Original languageEnglish
Pages (from-to)604-609
Number of pages6
JournalNuclear Materials and Energy
Volume9
DOIs
StatePublished - 1 Dec 2016

Keywords

  • Beryllium, Erosion, JET-ILW, JET ITER-like wall, Spectroscopy

ID: 5647781