Fast-ion effects during test blanket module simulation experiments in DIII-D

G. J. Kramer; B. V. Budny; R. Ellis; M. Gorelenkova; W. W. Heidbrink; T. Kurki-Suonio; R. Nazikian; A. Salmi; M. J. Schaffer; K. Shinohara; J. A. Snipes; D. A. Spong; T. Koskela; M. A. Van Zeeland

doi:10.1088/0029-5515/51/10/103029

Fast-ion effects during test blanket module simulation experiments in DIII-D

G. J. Kramer, B. V. Budny, R. Ellis, M. Gorelenkova, W. W. Heidbrink, T. Kurki-Suonio, R. Nazikian, A. Salmi, M. J. Schaffer, K. Shinohara, J. A. Snipes, D. A. Spong, T. Koskela, M. A. Van Zeeland

Plasma Theory and Modeling

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

Fast beam-ion losses were studied in DIII-D in the presence of a scaled mock-up of two test blanket modules (TBM) for ITER. Heating of the protective tiles on the front of the TBM surface was found when neutral beams were injected and the TBM fields were engaged. The fast-ion core confinement was not significantly affected. Different orbit-following codes predict the formation of a hot spot on the TBM surface arising from beam ions deposited near the edge of the plasma. The codes are in good agreement with each other on the total power deposited at the hot spot, predicting an increase in power with decreasing separation between the plasma edge and the TBM surface. A thermal analysis of the heat flow through the tiles shows that the simulated power can account for the measured tile temperature rise. The thermal analysis, however, is very sensitive to the details of the localization of the hot spot, which is predicted to be different among the various codes.

Original language	English
Article number	103029
Journal	Nuclear Fusion
Volume	51
Issue number	10
DOIs	https://doi.org/10.1088/0029-5515/51/10/103029
State	Published - Oct 2011

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Kramer, G. J., Budny, B. V., Ellis, R., Gorelenkova, M., Heidbrink, W. W., Kurki-Suonio, T., Nazikian, R., Salmi, A., Schaffer, M. J., Shinohara, K., Snipes, J. A., Spong, D. A., Koskela, T., & Van Zeeland, M. A. (2011). Fast-ion effects during test blanket module simulation experiments in DIII-D. Nuclear Fusion, 51(10), Article 103029. https://doi.org/10.1088/0029-5515/51/10/103029

@article{1278522888ea41488660ac4d6492449a,

title = "Fast-ion effects during test blanket module simulation experiments in DIII-D",

abstract = "Fast beam-ion losses were studied in DIII-D in the presence of a scaled mock-up of two test blanket modules (TBM) for ITER. Heating of the protective tiles on the front of the TBM surface was found when neutral beams were injected and the TBM fields were engaged. The fast-ion core confinement was not significantly affected. Different orbit-following codes predict the formation of a hot spot on the TBM surface arising from beam ions deposited near the edge of the plasma. The codes are in good agreement with each other on the total power deposited at the hot spot, predicting an increase in power with decreasing separation between the plasma edge and the TBM surface. A thermal analysis of the heat flow through the tiles shows that the simulated power can account for the measured tile temperature rise. The thermal analysis, however, is very sensitive to the details of the localization of the hot spot, which is predicted to be different among the various codes.",

author = "Kramer, {G. J.} and Budny, {B. V.} and R. Ellis and M. Gorelenkova and Heidbrink, {W. W.} and T. Kurki-Suonio and R. Nazikian and A. Salmi and Schaffer, {M. J.} and K. Shinohara and Snipes, {J. A.} and Spong, {D. A.} and T. Koskela and {Van Zeeland}, {M. A.}",

year = "2011",

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doi = "10.1088/0029-5515/51/10/103029",

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AU - Kramer, G. J.

AU - Budny, B. V.

AU - Ellis, R.

AU - Gorelenkova, M.

AU - Heidbrink, W. W.

AU - Kurki-Suonio, T.

AU - Nazikian, R.

AU - Salmi, A.

AU - Schaffer, M. J.

AU - Shinohara, K.

AU - Snipes, J. A.

AU - Spong, D. A.

AU - Koskela, T.

AU - Van Zeeland, M. A.

PY - 2011/10

Y1 - 2011/10

N2 - Fast beam-ion losses were studied in DIII-D in the presence of a scaled mock-up of two test blanket modules (TBM) for ITER. Heating of the protective tiles on the front of the TBM surface was found when neutral beams were injected and the TBM fields were engaged. The fast-ion core confinement was not significantly affected. Different orbit-following codes predict the formation of a hot spot on the TBM surface arising from beam ions deposited near the edge of the plasma. The codes are in good agreement with each other on the total power deposited at the hot spot, predicting an increase in power with decreasing separation between the plasma edge and the TBM surface. A thermal analysis of the heat flow through the tiles shows that the simulated power can account for the measured tile temperature rise. The thermal analysis, however, is very sensitive to the details of the localization of the hot spot, which is predicted to be different among the various codes.

AB - Fast beam-ion losses were studied in DIII-D in the presence of a scaled mock-up of two test blanket modules (TBM) for ITER. Heating of the protective tiles on the front of the TBM surface was found when neutral beams were injected and the TBM fields were engaged. The fast-ion core confinement was not significantly affected. Different orbit-following codes predict the formation of a hot spot on the TBM surface arising from beam ions deposited near the edge of the plasma. The codes are in good agreement with each other on the total power deposited at the hot spot, predicting an increase in power with decreasing separation between the plasma edge and the TBM surface. A thermal analysis of the heat flow through the tiles shows that the simulated power can account for the measured tile temperature rise. The thermal analysis, however, is very sensitive to the details of the localization of the hot spot, which is predicted to be different among the various codes.

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VL - 51

JO - Nuclear Fusion

JF - Nuclear Fusion

IS - 10

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ER -

Fast-ion effects during test blanket module simulation experiments in DIII-D

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