ITER Test Blanket Module Error Field Experiments at DIII-D

M.J. Schaffer; J.A. Snipes; P. Gohil; Antti Salmi; Tuomas Tala; P.C. de Vries; T. E. Evans; M.E. Fenstermacher; X. Gao; A.M. Garofalo; D. A. Gates; C. M. Greenfield; W. W. Heidbrink; G.J. Kramer; R.J. La Haye; S. Liu; A. Loarte; M.F.F. Nave; T. H. Osborne; N. Oyama; J.K. Park; N. Ramasubramanian; H. Reimerdes; G. Saibene; K. Shinohara; D. A. Spong; W.M. Solomon; J.A. Boedo; V. Chuyanov; E.J. Doyle; M. Jakubowski; H. Jhang; R. M. Nazikian; V. D. Pustovitov; O. Schmitz; R. Srinivasan; T. S. Taylor; M.R. Wade; K. I. You; L. Zeng; DIII-D Team

ITER Test Blanket Module Error Field Experiments at DIII-D

M.J. Schaffer, J.A. Snipes, P. Gohil, Antti Salmi, Tuomas Tala, P.C. de Vries, T. E. Evans, M.E. Fenstermacher, X. Gao, A.M. Garofalo, D. A. Gates, C. M. Greenfield, W. W. Heidbrink, G.J. Kramer, R.J. La Haye, S. Liu, A. Loarte, M.F.F. Nave, T. H. Osborne, N. OyamaJ.K. Park, N. Ramasubramanian, H. Reimerdes, G. Saibene, K. Shinohara, D. A. Spong, W.M. Solomon, J.A. Boedo, V. Chuyanov, E.J. Doyle, M. Jakubowski, H. Jhang, R. M. Nazikian, V. D. Pustovitov, O. Schmitz, R. Srinivasan, T. S. Taylor, M.R. Wade, K. I. You, L. Zeng, DIII-D Team

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific

Abstract

Experiments at DIII-D investigated the effects of ferromagnetic error fields similar to those expected from proposed ITER Test Blanket Modules (TBMs). Studied were effects on: plasma rotation and locking; confinement; L-H transition; edge localized mode (ELM) suppression by resonant magnetic perturbations; ELMs and the H-mode pedestal; energetic particle losses; and more. The experiments used a 3-coil mock-up of 2 magnetized ITER TBMs in one ITER equatorial port. The experiments did not reveal any effect likely to preclude ITER operations with a TBM-like error field. The largest effect was slowed plasma toroidal rotation ν across the entire radial profile by as much as Δν/ν₀ ~50% via non-resonant braking. Changes to global Δn/n, Δβ/β and ΔH98/H98 were ~3 times smaller. These effects are stronger at higher β and lower ν. Other effects were smaller. The TBM field increased sensitivity to locking by an applied n=1 test field, but it was nulled in an L-mode plasma by re-adjusting the DIII-D n=1 error field compensation system. Numerical modeling by IPEC reproduces the locking semi-quantitatively and predicts similar compensation of locking in H-mode.

Original language	English
Title of host publication	Proceedings of the 23rd IAEA Fusion Energy Conference
Publisher	International Atomic Energy Agency IAEA
Publication status	Published - 2010
MoE publication type	Not Eligible
Event	23rd IAEA Fusion Energy Conference, FEC 2010 - Daejon, Korea, Republic of Duration: 10 Oct 2010 → 16 Oct 2010

Conference

Conference	23rd IAEA Fusion Energy Conference, FEC 2010
Country/Territory	Korea, Republic of
City	Daejon
Period	10/10/10 → 16/10/10

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Cite this

Schaffer, M. J., Snipes, J. A., Gohil, P., Salmi, A., Tala, T., de Vries, P. C., Evans, T. E., Fenstermacher, M. E., Gao, X., Garofalo, A. M., Gates, D. A., Greenfield, C. M., Heidbrink, W. W., Kramer, G. J., La Haye, R. J., Liu, S., Loarte, A., Nave, M. F. F., Osborne, T. H., ... DIII-D Team (2010). ITER Test Blanket Module Error Field Experiments at DIII-D. In Proceedings of the 23rd IAEA Fusion Energy Conference Article ITR/1-3 International Atomic Energy Agency IAEA. http://www-naweb.iaea.org/napc/physics/FEC/FEC2010/papers/itr_1-3.pdf

@inproceedings{28a96b2e7a1c4e8c8309966040bb7c89,

title = "ITER Test Blanket Module Error Field Experiments at DIII-D",

abstract = "Experiments at DIII-D investigated the effects of ferromagnetic error fields similar to those expected from proposed ITER Test Blanket Modules (TBMs). Studied were effects on: plasma rotation and locking; confinement; L-H transition; edge localized mode (ELM) suppression by resonant magnetic perturbations; ELMs and the H-mode pedestal; energetic particle losses; and more. The experiments used a 3-coil mock-up of 2 magnetized ITER TBMs in one ITER equatorial port. The experiments did not reveal any effect likely to preclude ITER operations with a TBM-like error field. The largest effect was slowed plasma toroidal rotation ν across the entire radial profile by as much as Δν/ν0 ~50% via non-resonant braking. Changes to global Δn/n, Δβ/β and ΔH98/H98 were ~3 times smaller. These effects are stronger at higher β and lower ν. Other effects were smaller. The TBM field increased sensitivity to locking by an applied n=1 test field, but it was nulled in an L-mode plasma by re-adjusting the DIII-D n=1 error field compensation system. Numerical modeling by IPEC reproduces the locking semi-quantitatively and predicts similar compensation of locking in H-mode.",

author = "M.J. Schaffer and J.A. Snipes and P. Gohil and Antti Salmi and Tuomas Tala and {de Vries}, P.C. and Evans, {T. E.} and M.E. Fenstermacher and X. Gao and A.M. Garofalo and Gates, {D. A.} and Greenfield, {C. M.} and Heidbrink, {W. W.} and G.J. Kramer and {La Haye}, R.J. and S. Liu and A. Loarte and M.F.F. Nave and Osborne, {T. H.} and N. Oyama and J.K. Park and N. Ramasubramanian and H. Reimerdes and G. Saibene and K. Shinohara and Spong, {D. A.} and W.M. Solomon and J.A. Boedo and V. Chuyanov and E.J. Doyle and M. Jakubowski and H. Jhang and Nazikian, {R. M.} and Pustovitov, {V. D.} and O. Schmitz and R. Srinivasan and Taylor, {T. S.} and M.R. Wade and You, {K. I.} and L. Zeng and {DIII-D Team}",

year = "2010",

language = "English",

booktitle = "Proceedings of the 23rd IAEA Fusion Energy Conference",

publisher = "International Atomic Energy Agency IAEA",

address = "Austria",

note = "23rd IAEA Fusion Energy Conference, FEC 2010 ; Conference date: 10-10-2010 Through 16-10-2010",

}

Schaffer, MJ, Snipes, JA, Gohil, P, Salmi, A , Tala, T, de Vries, PC, Evans, TE, Fenstermacher, ME, Gao, X, Garofalo, AM, Gates, DA, Greenfield, CM, Heidbrink, WW, Kramer, GJ, La Haye, RJ, Liu, S, Loarte, A, Nave, MFF, Osborne, TH, Oyama, N, Park, JK, Ramasubramanian, N, Reimerdes, H, Saibene, G, Shinohara, K, Spong, DA, Solomon, WM, Boedo, JA, Chuyanov, V, Doyle, EJ, Jakubowski, M, Jhang, H, Nazikian, RM, Pustovitov, VD, Schmitz, O, Srinivasan, R, Taylor, TS, Wade, MR, You, KI, Zeng, L & DIII-D Team 2010, ITER Test Blanket Module Error Field Experiments at DIII-D. in Proceedings of the 23rd IAEA Fusion Energy Conference., ITR/1-3, International Atomic Energy Agency IAEA, 23rd IAEA Fusion Energy Conference, FEC 2010, Daejon, Korea, Republic of, 10/10/10. <http://www-naweb.iaea.org/napc/physics/FEC/FEC2010/papers/itr_1-3.pdf>

TY - GEN

T1 - ITER Test Blanket Module Error Field Experiments at DIII-D

AU - Schaffer, M.J.

AU - Snipes, J.A.

AU - Gohil, P.

AU - Salmi, Antti

AU - Tala, Tuomas

AU - de Vries, P.C.

AU - Evans, T. E.

AU - Fenstermacher, M.E.

AU - Gao, X.

AU - Garofalo, A.M.

AU - Gates, D. A.

AU - Greenfield, C. M.

AU - Heidbrink, W. W.

AU - Kramer, G.J.

AU - La Haye, R.J.

AU - Liu, S.

AU - Loarte, A.

AU - Nave, M.F.F.

AU - Osborne, T. H.

AU - Oyama, N.

AU - Park, J.K.

AU - Ramasubramanian, N.

AU - Reimerdes, H.

AU - Saibene, G.

AU - Shinohara, K.

AU - Spong, D. A.

AU - Solomon, W.M.

AU - Boedo, J.A.

AU - Chuyanov, V.

AU - Doyle, E.J.

AU - Jakubowski, M.

AU - Jhang, H.

AU - Nazikian, R. M.

AU - Pustovitov, V. D.

AU - Schmitz, O.

AU - Srinivasan, R.

AU - Taylor, T. S.

AU - Wade, M.R.

AU - You, K. I.

AU - Zeng, L.

AU - DIII-D Team

PY - 2010

Y1 - 2010

N2 - Experiments at DIII-D investigated the effects of ferromagnetic error fields similar to those expected from proposed ITER Test Blanket Modules (TBMs). Studied were effects on: plasma rotation and locking; confinement; L-H transition; edge localized mode (ELM) suppression by resonant magnetic perturbations; ELMs and the H-mode pedestal; energetic particle losses; and more. The experiments used a 3-coil mock-up of 2 magnetized ITER TBMs in one ITER equatorial port. The experiments did not reveal any effect likely to preclude ITER operations with a TBM-like error field. The largest effect was slowed plasma toroidal rotation ν across the entire radial profile by as much as Δν/ν0 ~50% via non-resonant braking. Changes to global Δn/n, Δβ/β and ΔH98/H98 were ~3 times smaller. These effects are stronger at higher β and lower ν. Other effects were smaller. The TBM field increased sensitivity to locking by an applied n=1 test field, but it was nulled in an L-mode plasma by re-adjusting the DIII-D n=1 error field compensation system. Numerical modeling by IPEC reproduces the locking semi-quantitatively and predicts similar compensation of locking in H-mode.

AB - Experiments at DIII-D investigated the effects of ferromagnetic error fields similar to those expected from proposed ITER Test Blanket Modules (TBMs). Studied were effects on: plasma rotation and locking; confinement; L-H transition; edge localized mode (ELM) suppression by resonant magnetic perturbations; ELMs and the H-mode pedestal; energetic particle losses; and more. The experiments used a 3-coil mock-up of 2 magnetized ITER TBMs in one ITER equatorial port. The experiments did not reveal any effect likely to preclude ITER operations with a TBM-like error field. The largest effect was slowed plasma toroidal rotation ν across the entire radial profile by as much as Δν/ν0 ~50% via non-resonant braking. Changes to global Δn/n, Δβ/β and ΔH98/H98 were ~3 times smaller. These effects are stronger at higher β and lower ν. Other effects were smaller. The TBM field increased sensitivity to locking by an applied n=1 test field, but it was nulled in an L-mode plasma by re-adjusting the DIII-D n=1 error field compensation system. Numerical modeling by IPEC reproduces the locking semi-quantitatively and predicts similar compensation of locking in H-mode.

M3 - Conference article in proceedings

BT - Proceedings of the 23rd IAEA Fusion Energy Conference

PB - International Atomic Energy Agency IAEA

T2 - 23rd IAEA Fusion Energy Conference, FEC 2010

Y2 - 10 October 2010 through 16 October 2010

ER -

ITER Test Blanket Module Error Field Experiments at DIII-D

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