Spectroscopic measurements of Be erosion at JET ILW and interpretation with ERO modelling

D. Borodin; M. F. Stamp; A. Kirschner; C. Björkas; S. Brezinsek; J. Miettunen; D. Matveev; C. Silva; O. Van Hoey; M. Groth; S. Marsen; V. Philipps

doi:10.1016/j.jnucmat.2013.01.043

Spectroscopic measurements of Be erosion at JET ILW and interpretation with ERO modelling

D. Borodin, M. F. Stamp, A. Kirschner, C. Björkas, S. Brezinsek, J. Miettunen, D. Matveev, C. Silva, O. Van Hoey, M. Groth, S. Marsen, V. Philipps

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31 Scopus citations

Abstract

Beryllium (Be) erosion has been studied in dedicated limiter discharges in JET with the recently installed ITER-like wall [1]. Passive spectroscopy [2] in the vicinity of the solid Be limiter is used for measurement of the Be physical sputtering as the main erosion mechanism. To consider the 3D configuration of plasma parameters and the electromagnetic field, the actual limiter shape and the local transport affecting the fraction of Be coming into the observation volume, a detailed modelling with the ERO code has been applied to interpret the experimental data. The observed dependence of BeI and BeII line intensities on plasma parameters during the density scan and various line ratios are used to validate the model and the underlying data including the recently introduced assumptions for Be physical sputtering, the very same which were used before for ITER predictive modelling [3].

Original language	English
Pages (from-to)	S267-S271
Journal	Journal of Nuclear Materials
Volume	438
Issue number	SUPPL
DOIs	https://doi.org/10.1016/j.jnucmat.2013.01.043
State	Published - 2013
Externally published	Yes

Bibliographical note

Funding Information:
This work was supported by EURATOM and carried out within the framework of the European Fusion Development Agreement. The views and opinions expressed herein do not necessarily reflect those of the European Commission.

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title = "Spectroscopic measurements of Be erosion at JET ILW and interpretation with ERO modelling",

abstract = "Beryllium (Be) erosion has been studied in dedicated limiter discharges in JET with the recently installed ITER-like wall [1]. Passive spectroscopy [2] in the vicinity of the solid Be limiter is used for measurement of the Be physical sputtering as the main erosion mechanism. To consider the 3D configuration of plasma parameters and the electromagnetic field, the actual limiter shape and the local transport affecting the fraction of Be coming into the observation volume, a detailed modelling with the ERO code has been applied to interpret the experimental data. The observed dependence of BeI and BeII line intensities on plasma parameters during the density scan and various line ratios are used to validate the model and the underlying data including the recently introduced assumptions for Be physical sputtering, the very same which were used before for ITER predictive modelling [3].",

author = "D. Borodin and Stamp, {M. F.} and A. Kirschner and C. Bj{\"o}rkas and S. Brezinsek and J. Miettunen and D. Matveev and C. Silva and {Van Hoey}, O. and M. Groth and S. Marsen and V. Philipps",

note = "Funding Information: This work was supported by EURATOM and carried out within the framework of the European Fusion Development Agreement. The views and opinions expressed herein do not necessarily reflect those of the European Commission. ",

year = "2013",

doi = "10.1016/j.jnucmat.2013.01.043",

language = "אנגלית",

volume = "438",

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AU - Borodin, D.

AU - Stamp, M. F.

AU - Kirschner, A.

AU - Björkas, C.

AU - Brezinsek, S.

AU - Miettunen, J.

AU - Matveev, D.

AU - Silva, C.

AU - Van Hoey, O.

AU - Groth, M.

AU - Marsen, S.

AU - Philipps, V.

N1 - Funding Information: This work was supported by EURATOM and carried out within the framework of the European Fusion Development Agreement. The views and opinions expressed herein do not necessarily reflect those of the European Commission.

PY - 2013

Y1 - 2013

N2 - Beryllium (Be) erosion has been studied in dedicated limiter discharges in JET with the recently installed ITER-like wall [1]. Passive spectroscopy [2] in the vicinity of the solid Be limiter is used for measurement of the Be physical sputtering as the main erosion mechanism. To consider the 3D configuration of plasma parameters and the electromagnetic field, the actual limiter shape and the local transport affecting the fraction of Be coming into the observation volume, a detailed modelling with the ERO code has been applied to interpret the experimental data. The observed dependence of BeI and BeII line intensities on plasma parameters during the density scan and various line ratios are used to validate the model and the underlying data including the recently introduced assumptions for Be physical sputtering, the very same which were used before for ITER predictive modelling [3].

AB - Beryllium (Be) erosion has been studied in dedicated limiter discharges in JET with the recently installed ITER-like wall [1]. Passive spectroscopy [2] in the vicinity of the solid Be limiter is used for measurement of the Be physical sputtering as the main erosion mechanism. To consider the 3D configuration of plasma parameters and the electromagnetic field, the actual limiter shape and the local transport affecting the fraction of Be coming into the observation volume, a detailed modelling with the ERO code has been applied to interpret the experimental data. The observed dependence of BeI and BeII line intensities on plasma parameters during the density scan and various line ratios are used to validate the model and the underlying data including the recently introduced assumptions for Be physical sputtering, the very same which were used before for ITER predictive modelling [3].

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Spectroscopic measurements of Be erosion at JET ILW and interpretation with ERO modelling

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