Material migration studies with an ITER first wall panel proxy on EAST

Ding, R.; Pitts, R. A.; Borodin, D.; Carpentier, S.; Ding, F.; Gong, X. Z.; Guo, H. Y.; Kirschner, A.; Kocan, M.; Li, J. G.; Luo, G. -N.; Mao, H. M.; Qian, J. P.; Stangeby, P. C.; Wampler, W. R.; Wang, H. Q.; Wang, W. Z.; Chen, J. L.; Gan, K. F.

doi:10.1088/0029-5515/55/2/023013

Title: Material migration studies with an ITER first wall panel proxy on EAST

Abstract

The ITER beryllium (Be) first wall (FW) panels are shaped to protect leading edges between neighbouring panels arising from assembly tolerances. This departure from a perfectly cylindrical surface automatically leads to magnetically shadowed regions where eroded Be can be re-deposited, together with co-deposition of tritium fuel. To provide a benchmark for a series of erosion/re-deposition simulation studies performed for the ITER FW panels, dedicated experiments have been performed on the EAST tokamak using a specially designed, instrumented test limiter acting as a proxy for the FW panel geometry. Carbon coated molybdenum plates forming the limiter front surface were exposed to the outer midplane boundary plasma of helium discharges using the new Material and Plasma Evaluation System (MAPES). Net erosion and deposition patterns are estimated using ion beam analysis to measure the carbon layer thickness variation across the surface after exposure. The highest erosion of about 0.8 µm is found near the midplane, where the surface is closest to the plasma separatrix. No net deposition above the measurement detection limit was found on the proxy wall element, even in shadowed regions. The measured 2D surface erosion distribution has been modelled with the 3D Monte Carlo code ERO, using the local plasmamore »« less

Authors:

Ding, R. ^[1]; Pitts, R. A. ^[2]; Borodin, D. ^[3]; Carpentier, S. ^[2]; Ding, F. ^[1]; Gong, X. Z. ^[1]; Guo, H. Y. ^[1]; Kirschner, A. ^[3]; Kocan, M. ^[2]; Li, J. G. ^[1]; Luo, G. -N. ^[1]; Mao, H. M. ^[1]; Qian, J. P. ^[1]; Stangeby, P. C. ^[4]; Wampler, W. R. ^[5]; Wang, H. Q. ^[1]; Wang, W. Z. ^[1]; Chen, J. L. ^[1]; Gan, K. F. ^[1]

Chinese Academy of Sciences (CAS), Anhui (People's Republic of China)
ITER Organization, St. Paul Lez Durance Cedex (France)
Forschungszentrum Julich GmbH, Association EURATOM-FZJ, Julich (Germany)
Univ. of Toronto Institute for Aerospace Studies, Toronto (Canada)
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Publication Date:: Fri Jan 23 00:00:00 EST 2015

Research Org.:: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Sponsoring Org.:: USDOE Advanced Research Projects Agency - Energy (ARPA-E)

OSTI Identifier:: 1235330

Report Number(s):: SAND-2014-17607J
Journal ID: ISSN 0029-5515; 537443

Grant/Contract Number:: AC04-94AL85000

Resource Type:: Accepted Manuscript

Journal Name:: Nuclear Fusion

Additional Journal Information:: Journal Volume: 55; Journal Issue: 2; Journal ID: ISSN 0029-5515

Publisher:: IOP Science

Country of Publication:: United States

Language:: English

Subject:: 70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats


                    Ding, R., Pitts, R. A., Borodin, D., Carpentier, S., Ding, F., Gong, X. Z., Guo, H. Y., Kirschner, A., Kocan, M., Li, J. G., Luo, G. -N., Mao, H. M., Qian, J. P., Stangeby, P. C., Wampler, W. R., Wang, H. Q., Wang, W. Z., Chen, J. L., and Gan, K. F. Material migration studies with an ITER first wall panel proxy on EAST.  United States: N. p., 2015. 
Web.  doi:10.1088/0029-5515/55/2/023013.

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                    Ding, R., Pitts, R. A., Borodin, D., Carpentier, S., Ding, F., Gong, X. Z., Guo, H. Y., Kirschner, A., Kocan, M., Li, J. G., Luo, G. -N., Mao, H. M., Qian, J. P., Stangeby, P. C., Wampler, W. R., Wang, H. Q., Wang, W. Z., Chen, J. L., & Gan, K. F. Material migration studies with an ITER first wall panel proxy on EAST.  United States.  https://doi.org/10.1088/0029-5515/55/2/023013

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                    Ding, R., Pitts, R. A., Borodin, D., Carpentier, S., Ding, F., Gong, X. Z., Guo, H. Y., Kirschner, A., Kocan, M., Li, J. G., Luo, G. -N., Mao, H. M., Qian, J. P., Stangeby, P. C., Wampler, W. R., Wang, H. Q., Wang, W. Z., Chen, J. L., and Gan, K. F. Fri .  
"Material migration studies with an ITER first wall panel proxy on EAST".  United States.  https://doi.org/10.1088/0029-5515/55/2/023013.  https://www.osti.gov/servlets/purl/1235330.

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@article{osti_1235330,

  title        = {Material migration studies with an ITER first wall panel proxy on EAST},

  author       = {Ding, R. and Pitts, R. A. and Borodin, D. and Carpentier, S. and Ding, F. and Gong, X. Z. and Guo, H. Y. and Kirschner, A. and Kocan, M. and Li, J. G. and Luo, G. -N. and Mao, H. M. and Qian, J. P. and Stangeby, P. C. and Wampler, W. R. and Wang, H. Q. and Wang, W. Z. and Chen, J. L. and Gan, K. F.},

  abstractNote = {The ITER beryllium (Be) first wall (FW) panels are shaped to protect leading edges between neighbouring panels arising from assembly tolerances. This departure from a perfectly cylindrical surface automatically leads to magnetically shadowed regions where eroded Be can be re-deposited, together with co-deposition of tritium fuel. To provide a benchmark for a series of erosion/re-deposition simulation studies performed for the ITER FW panels, dedicated experiments have been performed on the EAST tokamak using a specially designed, instrumented test limiter acting as a proxy for the FW panel geometry. Carbon coated molybdenum plates forming the limiter front surface were exposed to the outer midplane boundary plasma of helium discharges using the new Material and Plasma Evaluation System (MAPES). Net erosion and deposition patterns are estimated using ion beam analysis to measure the carbon layer thickness variation across the surface after exposure. The highest erosion of about 0.8 µm is found near the midplane, where the surface is closest to the plasma separatrix. No net deposition above the measurement detection limit was found on the proxy wall element, even in shadowed regions. The measured 2D surface erosion distribution has been modelled with the 3D Monte Carlo code ERO, using the local plasma parameter measurements together with a diffusive transport assumption. In conclusion, excellent agreement between the experimentally observed net erosion and the modelled erosion profile has been obtained.},

  doi          = {10.1088/0029-5515/55/2/023013},

  journal      = {Nuclear Fusion},

  number       = 2,

  volume       = 55,

  place        = {United States},

  year         = {Fri Jan 23 00:00:00 EST 2015},

  month        = {Fri Jan 23 00:00:00 EST 2015}

}

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Works referenced in this record:

Simulation of the plasma-wall interaction in a tokamak with the Monte Carlo code ERO-TEXTOR
journal, May 2000

Kirschner, A.; Philipps, V.; Winter, J.
Nuclear Fusion, Vol. 40, Issue 5
DOI: 10.1088/0029-5515/40/5/311

ERO code benchmarking of ITER first wall beryllium erosion/re-deposition against LIM predictions
journal, December 2011

Borodin, D.; Kirschner, A.; Carpentier-Chouchana, S.
Physica Scripta, Vol. T145
DOI: 10.1088/0031-8949/2011/T145/014008

Measurements of carbon, deuterium and boron deposition in DIII-D
journal, March 2005

Wampler, W. R.; Allen, S. L.; McLean, A. G.
Journal of Nuclear Materials, Vol. 337-339
DOI: 10.1016/j.jnucmat.2004.10.124

Experimental Advanced Superconducting Tokamak/material and plasma evaluation system material migration experiment
journal, April 2014

Wampler, W. R.; Pitts, R. A.; Carpentier-Chouchana, S.
Physica Scripta, Vol. T159
DOI: 10.1088/0031-8949/2014/T159/014069

Determination of Be sputtering yields from spectroscopic observations at the JET ITER-like wall based on three-dimensional ERO modelling
journal, April 2014

Borodin, D.; Brezinsek, S.; Miettunen, J.
Physica Scripta, Vol. T159
DOI: 10.1088/0031-8949/2014/T159/014057

Modelling of power deposition on the JET ITER like wall using the code PFCFLux
journal, July 2013

Firdaouss, M.; Riccardo, V.; Martin, V.
Journal of Nuclear Materials, Vol. 438
DOI: 10.1016/j.jnucmat.2013.01.111

Analysis for shaping the ITER first wall
journal, June 2009

Stangeby, P. C.; Mitteau, R.
Journal of Nuclear Materials, Vol. 390-391
DOI: 10.1016/j.jnucmat.2009.01.249

Physics basis and design of the ITER plasma-facing components
journal, August 2011

Pitts, R. A.; Carpentier, S.; Escourbiac, F.
Journal of Nuclear Materials, Vol. 415, Issue 1
DOI: 10.1016/j.jnucmat.2011.01.114

Lithium coating for H-mode and high performance plasmas on EAST in ASIPP
journal, July 2013

Zuo, G. Z.; Hu, J. S.; Li, J. G.
Journal of Nuclear Materials, Vol. 438
DOI: 10.1016/j.jnucmat.2013.01.014

Flux dependence of carbon chemical erosion by deuterium ions
journal, November 2004

Roth, J.; Preuss, R.; Bohmeyer, W.
Nuclear Fusion, Vol. 44, Issue 11
DOI: 10.1088/0029-5515/44/11/L01

Fast reciprocating probe system on the EAST superconducting tokamak
journal, November 2010

Zhang, W.; Chang, J. F.; Wan, B. N.
Review of Scientific Instruments, Vol. 81, Issue 11
DOI: 10.1063/1.3499237

Recent progress on divertor operations in EAST
journal, August 2011

Guo, H. Y.; Gao, X.; Li, J.
Journal of Nuclear Materials, Vol. 415, Issue 1
DOI: 10.1016/j.jnucmat.2010.11.048

A shaped First Wall for ITER
journal, August 2011

Mitteau, R.; Stangeby, P.; Lowry, C.
Journal of Nuclear Materials, Vol. 415, Issue 1
DOI: 10.1016/j.jnucmat.2010.10.070

Modelling of beryllium erosion–redeposition on ITER first wall panels
journal, August 2011

Carpentier, S.; Pitts, R. A.; Stangeby, P. C.
Journal of Nuclear Materials, Vol. 415, Issue 1
DOI: 10.1016/j.jnucmat.2010.10.081

Measurements of ion energies in the tokamak plasma boundary
journal, August 2011

Kočan, M.; Gunn, J. P.; Carpentier-Chouchana, S.
Journal of Nuclear Materials, Vol. 415, Issue 1
DOI: 10.1016/j.jnucmat.2010.08.036

Comparing scrape-off layer and divertor physics in JET pure He and D discharges
journal, March 2003

Pitts, R.; Andrew, P.; Andrew, Y.
Journal of Nuclear Materials, Vol. 313-316
DOI: 10.1016/S0022-3115(02)01429-0

Works referencing / citing this record:

Effects of carbon impurities on the power radiation and tungsten target erosion in EAST
journal, July 2018

Sang, Chaofeng; Ding, Rui; Bonnin, Xavier
Physics of Plasmas, Vol. 25, Issue 7
DOI: 10.1063/1.5038848

Development of a time-of-flight low-energy neutral particle analyzer for EAST tokamak
journal, October 2018

Mu, L.; Ding, R.; Zhu, Y. B.
Review of Scientific Instruments, Vol. 89, Issue 10
DOI: 10.1063/1.5038936

High frequency mode generation by toroidal Alfvén eigenmodes
journal, July 2019

Wei, Shizhao; Shi, Peiwan; Yu, Liming
Physics of Plasmas, Vol. 26, Issue 7
DOI: 10.1063/1.5100597

Plasma cleaning of ITER edge Thomson scattering mock-up mirror in the EAST tokamak
journal, December 2017

Yan, Rong; Moser, Lucas; Wang, Baoguo
Nuclear Fusion, Vol. 58, Issue 2
DOI: 10.1088/1741-4326/aa96b8

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Similar Records

Title: Material migration studies with an ITER first wall panel proxy on EAST

Abstract

Citation Formats

Simulation of the plasma-wall interaction in a tokamak with the Monte Carlo code ERO-TEXTOR journal, May 2000

ERO code benchmarking of ITER first wall beryllium erosion/re-deposition against LIM predictions journal, December 2011

Measurements of carbon, deuterium and boron deposition in DIII-D journal, March 2005

Experimental Advanced Superconducting Tokamak/material and plasma evaluation system material migration experiment journal, April 2014

Determination of Be sputtering yields from spectroscopic observations at the JET ITER-like wall based on three-dimensional ERO modelling journal, April 2014

Modelling of power deposition on the JET ITER like wall using the code PFCFLux journal, July 2013

Analysis for shaping the ITER first wall journal, June 2009

Physics basis and design of the ITER plasma-facing components journal, August 2011

Lithium coating for H-mode and high performance plasmas on EAST in ASIPP journal, July 2013

Flux dependence of carbon chemical erosion by deuterium ions journal, November 2004

Fast reciprocating probe system on the EAST superconducting tokamak journal, November 2010

Recent progress on divertor operations in EAST journal, August 2011

A shaped First Wall for ITER journal, August 2011

Modelling of beryllium erosion–redeposition on ITER first wall panels journal, August 2011

Measurements of ion energies in the tokamak plasma boundary journal, August 2011

Comparing scrape-off layer and divertor physics in JET pure He and D discharges journal, March 2003

Effects of carbon impurities on the power radiation and tungsten target erosion in EAST journal, July 2018

Development of a time-of-flight low-energy neutral particle analyzer for EAST tokamak journal, October 2018

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Plasma cleaning of ITER edge Thomson scattering mock-up mirror in the EAST tokamak journal, December 2017

Simulation of the plasma-wall interaction in a tokamak with the Monte Carlo code ERO-TEXTOR
journal, May 2000

ERO code benchmarking of ITER first wall beryllium erosion/re-deposition against LIM predictions
journal, December 2011

Measurements of carbon, deuterium and boron deposition in DIII-D
journal, March 2005

Experimental Advanced Superconducting Tokamak/material and plasma evaluation system material migration experiment
journal, April 2014

Determination of Be sputtering yields from spectroscopic observations at the JET ITER-like wall based on three-dimensional ERO modelling
journal, April 2014

Modelling of power deposition on the JET ITER like wall using the code PFCFLux
journal, July 2013

Analysis for shaping the ITER first wall
journal, June 2009

Physics basis and design of the ITER plasma-facing components
journal, August 2011

Lithium coating for H-mode and high performance plasmas on EAST in ASIPP
journal, July 2013

Flux dependence of carbon chemical erosion by deuterium ions
journal, November 2004

Fast reciprocating probe system on the EAST superconducting tokamak
journal, November 2010

Recent progress on divertor operations in EAST
journal, August 2011

A shaped First Wall for ITER
journal, August 2011

Modelling of beryllium erosion–redeposition on ITER first wall panels
journal, August 2011

Measurements of ion energies in the tokamak plasma boundary
journal, August 2011

Comparing scrape-off layer and divertor physics in JET pure He and D discharges
journal, March 2003

Effects of carbon impurities on the power radiation and tungsten target erosion in EAST
journal, July 2018

Development of a time-of-flight low-energy neutral particle analyzer for EAST tokamak
journal, October 2018

High frequency mode generation by toroidal Alfvén eigenmodes
journal, July 2019

Plasma cleaning of ITER edge Thomson scattering mock-up mirror in the EAST tokamak
journal, December 2017