Determination of Be sputtering yields from spectroscopic observations at the JET ILW based on 3D ERO modelling

D. Borodin, M.F. Stamp, S. Brezinsek, C. Björkas, J. Miettunen, A. Kirschner, D. Matveev, M. Groth, Markus Airila, S. Lisgo, S. Marsen, V. Philipps, JET-EFDA contributors

Research output: Contribution to journalArticleScientificpeer-review

16 Citations (Scopus)

Abstract

Estimations of the ITER first wall (FW) lifetime, previously made using the three-dimensional Monte-Carlo ERO code (Borodin et al 2011 Phys. Scr. T145 014008), depend strongly on the assumptions of the physical sputtering yield for beryllium (Be). It is of importance to validate the respective model and data at existing devices including the JET ITER-like wall (ILW) as most ITER-relevant experiments. Applying the same sputtering input data in ERO as those used before in the ITER-predictions, the ERO simulations for the Be light intensity (using up to date atomic data from ADAS and measured plasma conditions) reveal a factor of 2 overestimation in the assumed yield even if the low estimate assuming 50% D surface content is used. This result indicates the preference of this assumption for plasma-wetted areas. It points to a possible necessity to correct (reduce) the respective estimates for the Be sputtering yield and, accordingly, re-visit the ITER FW lifetime predictions.
Original languageEnglish
Article number014057
Number of pages6
JournalPhysica Scripta
Issue numberT159
DOIs
Publication statusPublished - 2014
MoE publication typeA1 Journal article-refereed

Fingerprint

Sputtering
3D Modeling
beryllium
sputtering
Lifetime
Plasma
life (durability)
Prediction
Light Intensity
estimates
predictions
Estimate
luminous intensity
Three-dimensional
Experiment
Observation
Simulation
simulation
Model

Cite this

Borodin, D., Stamp, M. F., Brezinsek, S., Björkas, C., Miettunen, J., Kirschner, A., ... contributors, JET-EFDA. (2014). Determination of Be sputtering yields from spectroscopic observations at the JET ILW based on 3D ERO modelling. Physica Scripta, (T159), [014057]. https://doi.org/10.1088/0031-8949/2014/T159/014057
Borodin, D. ; Stamp, M.F. ; Brezinsek, S. ; Björkas, C. ; Miettunen, J. ; Kirschner, A. ; Matveev, D. ; Groth, M. ; Airila, Markus ; Lisgo, S. ; Marsen, S. ; Philipps, V. ; contributors, JET-EFDA. / Determination of Be sputtering yields from spectroscopic observations at the JET ILW based on 3D ERO modelling. In: Physica Scripta. 2014 ; No. T159.
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title = "Determination of Be sputtering yields from spectroscopic observations at the JET ILW based on 3D ERO modelling",
abstract = "Estimations of the ITER first wall (FW) lifetime, previously made using the three-dimensional Monte-Carlo ERO code (Borodin et al 2011 Phys. Scr. T145 014008), depend strongly on the assumptions of the physical sputtering yield for beryllium (Be). It is of importance to validate the respective model and data at existing devices including the JET ITER-like wall (ILW) as most ITER-relevant experiments. Applying the same sputtering input data in ERO as those used before in the ITER-predictions, the ERO simulations for the Be light intensity (using up to date atomic data from ADAS and measured plasma conditions) reveal a factor of 2 overestimation in the assumed yield even if the low estimate assuming 50{\%} D surface content is used. This result indicates the preference of this assumption for plasma-wetted areas. It points to a possible necessity to correct (reduce) the respective estimates for the Be sputtering yield and, accordingly, re-visit the ITER FW lifetime predictions.",
author = "D. Borodin and M.F. Stamp and S. Brezinsek and C. Bj{\"o}rkas and J. Miettunen and A. Kirschner and D. Matveev and M. Groth and Markus Airila and S. Lisgo and S. Marsen and V. Philipps and JET-EFDA contributors",
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Borodin, D, Stamp, MF, Brezinsek, S, Björkas, C, Miettunen, J, Kirschner, A, Matveev, D, Groth, M, Airila, M, Lisgo, S, Marsen, S, Philipps, V & contributors, JET-EFDA 2014, 'Determination of Be sputtering yields from spectroscopic observations at the JET ILW based on 3D ERO modelling', Physica Scripta, no. T159, 014057. https://doi.org/10.1088/0031-8949/2014/T159/014057

Determination of Be sputtering yields from spectroscopic observations at the JET ILW based on 3D ERO modelling. / Borodin, D.; Stamp, M.F.; Brezinsek, S.; Björkas, C.; Miettunen, J.; Kirschner, A.; Matveev, D.; Groth, M.; Airila, Markus; Lisgo, S.; Marsen, S.; Philipps, V.; contributors, JET-EFDA.

In: Physica Scripta, No. T159, 014057, 2014.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

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AU - Borodin, D.

AU - Stamp, M.F.

AU - Brezinsek, S.

AU - Björkas, C.

AU - Miettunen, J.

AU - Kirschner, A.

AU - Matveev, D.

AU - Groth, M.

AU - Airila, Markus

AU - Lisgo, S.

AU - Marsen, S.

AU - Philipps, V.

AU - contributors, JET-EFDA

PY - 2014

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AB - Estimations of the ITER first wall (FW) lifetime, previously made using the three-dimensional Monte-Carlo ERO code (Borodin et al 2011 Phys. Scr. T145 014008), depend strongly on the assumptions of the physical sputtering yield for beryllium (Be). It is of importance to validate the respective model and data at existing devices including the JET ITER-like wall (ILW) as most ITER-relevant experiments. Applying the same sputtering input data in ERO as those used before in the ITER-predictions, the ERO simulations for the Be light intensity (using up to date atomic data from ADAS and measured plasma conditions) reveal a factor of 2 overestimation in the assumed yield even if the low estimate assuming 50% D surface content is used. This result indicates the preference of this assumption for plasma-wetted areas. It points to a possible necessity to correct (reduce) the respective estimates for the Be sputtering yield and, accordingly, re-visit the ITER FW lifetime predictions.

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DO - 10.1088/0031-8949/2014/T159/014057

M3 - Article

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