Beryllium global erosion and deposition at JET-ILW simulated with ERO2.0

J. Romazanov (Corresponding Author), S. Brezinsek, D. Borodin, M. Groth, S. Wiesen, A. Kirschner, A. Huber, A. Widdowson, M. Airila, A. Eksaeva, I. Borodkina, Ch Linsmeier, JET Contributors

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)

Abstract

The recently developed Monte-Carlo code ERO2.0 is applied to the modelling of limited and diverted discharges at JET with the ITER-like wall (ILW). The global beryllium (Be) erosion and deposition is simulated and compared to experimental results from passive spectroscopy. For the limiter configuration, it is demonstrated that Be self-sputtering is an important contributor (at least 35%) to the Be erosion. Taking this contribution into account, the ERO2.0 modelling confirms previous evidence that high deuterium (D) surface concentrations of up to ∼ 50% atomic fraction provide a reasonable estimate of Be erosion in plasma-wetted areas. For the divertor configuration, it is shown that drifts can have a high impact on the scrape-off layer plasma flows, which in turn affect global Be transport by entrainment and lead to increased migration into the inner divertor. The modelling of the effective erosion yield for different operational phases (ohmic, L- and H-mode) agrees with experimental values within a factor of two, and confirms that the effective erosion yield decreases with increasing heating power and confinement.

Original languageEnglish
Pages (from-to)331-338
Number of pages8
JournalNuclear Materials and Energy
Volume18
DOIs
Publication statusPublished - 2019
MoE publication typeNot Eligible

Fingerprint

Beryllium
beryllium
erosion
Erosion
Plasma flow
Deuterium
Limiters
entrainment
magnetohydrodynamic flow
configurations
Sputtering
deuterium
sputtering
Spectroscopy
Plasmas
Heating
heating
estimates
spectroscopy

Keywords

  • Beryllium
  • ERO2.0
  • Erosion
  • JET ITER-like wall

Cite this

Romazanov, J., Brezinsek, S., Borodin, D., Groth, M., Wiesen, S., Kirschner, A., ... JET Contributors (2019). Beryllium global erosion and deposition at JET-ILW simulated with ERO2.0. Nuclear Materials and Energy, 18, 331-338. https://doi.org/10.1016/j.nme.2019.01.015
Romazanov, J. ; Brezinsek, S. ; Borodin, D. ; Groth, M. ; Wiesen, S. ; Kirschner, A. ; Huber, A. ; Widdowson, A. ; Airila, M. ; Eksaeva, A. ; Borodkina, I. ; Linsmeier, Ch ; JET Contributors. / Beryllium global erosion and deposition at JET-ILW simulated with ERO2.0. In: Nuclear Materials and Energy. 2019 ; Vol. 18. pp. 331-338.
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abstract = "The recently developed Monte-Carlo code ERO2.0 is applied to the modelling of limited and diverted discharges at JET with the ITER-like wall (ILW). The global beryllium (Be) erosion and deposition is simulated and compared to experimental results from passive spectroscopy. For the limiter configuration, it is demonstrated that Be self-sputtering is an important contributor (at least 35{\%}) to the Be erosion. Taking this contribution into account, the ERO2.0 modelling confirms previous evidence that high deuterium (D) surface concentrations of up to ∼ 50{\%} atomic fraction provide a reasonable estimate of Be erosion in plasma-wetted areas. For the divertor configuration, it is shown that drifts can have a high impact on the scrape-off layer plasma flows, which in turn affect global Be transport by entrainment and lead to increased migration into the inner divertor. The modelling of the effective erosion yield for different operational phases (ohmic, L- and H-mode) agrees with experimental values within a factor of two, and confirms that the effective erosion yield decreases with increasing heating power and confinement.",
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author = "J. Romazanov and S. Brezinsek and D. Borodin and M. Groth and S. Wiesen and A. Kirschner and A. Huber and A. Widdowson and M. Airila and A. Eksaeva and I. Borodkina and Ch Linsmeier and {JET Contributors}",
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Romazanov, J, Brezinsek, S, Borodin, D, Groth, M, Wiesen, S, Kirschner, A, Huber, A, Widdowson, A, Airila, M, Eksaeva, A, Borodkina, I, Linsmeier, C & JET Contributors 2019, 'Beryllium global erosion and deposition at JET-ILW simulated with ERO2.0', Nuclear Materials and Energy, vol. 18, pp. 331-338. https://doi.org/10.1016/j.nme.2019.01.015

Beryllium global erosion and deposition at JET-ILW simulated with ERO2.0. / Romazanov, J. (Corresponding Author); Brezinsek, S.; Borodin, D.; Groth, M.; Wiesen, S.; Kirschner, A.; Huber, A.; Widdowson, A.; Airila, M.; Eksaeva, A.; Borodkina, I.; Linsmeier, Ch; JET Contributors.

In: Nuclear Materials and Energy, Vol. 18, 2019, p. 331-338.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Beryllium global erosion and deposition at JET-ILW simulated with ERO2.0

AU - Romazanov, J.

AU - Brezinsek, S.

AU - Borodin, D.

AU - Groth, M.

AU - Wiesen, S.

AU - Kirschner, A.

AU - Huber, A.

AU - Widdowson, A.

AU - Airila, M.

AU - Eksaeva, A.

AU - Borodkina, I.

AU - Linsmeier, Ch

AU - JET Contributors

PY - 2019

Y1 - 2019

N2 - The recently developed Monte-Carlo code ERO2.0 is applied to the modelling of limited and diverted discharges at JET with the ITER-like wall (ILW). The global beryllium (Be) erosion and deposition is simulated and compared to experimental results from passive spectroscopy. For the limiter configuration, it is demonstrated that Be self-sputtering is an important contributor (at least 35%) to the Be erosion. Taking this contribution into account, the ERO2.0 modelling confirms previous evidence that high deuterium (D) surface concentrations of up to ∼ 50% atomic fraction provide a reasonable estimate of Be erosion in plasma-wetted areas. For the divertor configuration, it is shown that drifts can have a high impact on the scrape-off layer plasma flows, which in turn affect global Be transport by entrainment and lead to increased migration into the inner divertor. The modelling of the effective erosion yield for different operational phases (ohmic, L- and H-mode) agrees with experimental values within a factor of two, and confirms that the effective erosion yield decreases with increasing heating power and confinement.

AB - The recently developed Monte-Carlo code ERO2.0 is applied to the modelling of limited and diverted discharges at JET with the ITER-like wall (ILW). The global beryllium (Be) erosion and deposition is simulated and compared to experimental results from passive spectroscopy. For the limiter configuration, it is demonstrated that Be self-sputtering is an important contributor (at least 35%) to the Be erosion. Taking this contribution into account, the ERO2.0 modelling confirms previous evidence that high deuterium (D) surface concentrations of up to ∼ 50% atomic fraction provide a reasonable estimate of Be erosion in plasma-wetted areas. For the divertor configuration, it is shown that drifts can have a high impact on the scrape-off layer plasma flows, which in turn affect global Be transport by entrainment and lead to increased migration into the inner divertor. The modelling of the effective erosion yield for different operational phases (ohmic, L- and H-mode) agrees with experimental values within a factor of two, and confirms that the effective erosion yield decreases with increasing heating power and confinement.

KW - Beryllium

KW - ERO2.0

KW - Erosion

KW - JET ITER-like wall

UR - http://www.scopus.com/inward/record.url?scp=85061047660&partnerID=8YFLogxK

U2 - 10.1016/j.nme.2019.01.015

DO - 10.1016/j.nme.2019.01.015

M3 - Article

VL - 18

SP - 331

EP - 338

JO - Nuclear Materials and Energy

JF - Nuclear Materials and Energy

SN - 2352-1791

ER -

Romazanov J, Brezinsek S, Borodin D, Groth M, Wiesen S, Kirschner A et al. Beryllium global erosion and deposition at JET-ILW simulated with ERO2.0. Nuclear Materials and Energy. 2019;18:331-338. https://doi.org/10.1016/j.nme.2019.01.015