The effect of transient density profile shaping on transport in large stellarators and heliotrons

A. Dinklage; R. Sakamoto; M. Yokoyama; K. Ida; J. Baldzuhn; C. D. Beidler; S. Cats; K.J. Mc Carthy; J. Geiger; M. Kobayashi; H. Maaßberg; S. Morita; G. Motojima; M. Nakata; M. Nunami; N. Pablant; K. Ogawa; J.H.E. Proll; S. Satake; K. Tanaka; F. Warmer; R.C. Wolf; P. Xanthopoulos; H. Yamada; R. Yasuhara; M. Yoshinuma

doi:10.1088/1741-4326/aa6775

The effect of transient density profile shaping on transport in large stellarators and heliotrons

A. Dinklage, R. Sakamoto, M. Yokoyama, K. Ida, J. Baldzuhn, C. D. Beidler, S. Cats, K.J. Mc Carthy, J. Geiger, M. Kobayashi, H. Maaßberg, S. Morita, G. Motojima, M. Nakata, M. Nunami, N. Pablant, K. Ogawa, J.H.E. Proll, S. Satake, K. TanakaF. Warmer, R.C. Wolf, P. Xanthopoulos, H. Yamada, R. Yasuhara, M. Yoshinuma

Onderzoeksoutput: Bijdrage aan tijdschrift › Tijdschriftartikel › Academic › peer review

6 Citaten (Scopus)

Samenvatting

Transport studies of pellet fuelling experiments on LHD are reported. Spatio-temporal evolutions after pellet injection into LHD discharges show cases where central density increases on the time scale of particle transport processes. Both the temperature gradient and the density gradient change during the density relaxation, the latter even in sign. The resulting thermodynamic forces influence radial electric fields - both as a driving term but also by, e.g. affecting the E _r dependence of ion transport. Magnetic fluctuations have been found to be induced by pellet injection but die out with the relaxation of the pressure profile.

Originele taal-2	Engels
Artikelnummer	066016
Aantal pagina's	6
Tijdschrift	Nuclear Fusion
Volume	57
Nummer van het tijdschrift	6
DOI's	https://doi.org/10.1088/1741-4326/aa6775
Status	Gepubliceerd - jun 2017

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10.1088/1741-4326/aa6775

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Dinklage, A., Sakamoto, R., Yokoyama, M., Ida, K., Baldzuhn, J., Beidler, C. D., Cats, S., Mc Carthy, K. J., Geiger, J., Kobayashi, M., Maaßberg, H., Morita, S., Motojima, G., Nakata, M., Nunami, M., Pablant, N., Ogawa, K., Proll, J. H. E., Satake, S., ... Yoshinuma, M. (2017). The effect of transient density profile shaping on transport in large stellarators and heliotrons. Nuclear Fusion, 57(6), [066016]. https://doi.org/10.1088/1741-4326/aa6775

Dinklage, A. ; Sakamoto, R. ; Yokoyama, M. ; Ida, K. ; Baldzuhn, J. ; Beidler, C. D. ; Cats, S. ; Mc Carthy, K.J. ; Geiger, J. ; Kobayashi, M. ; Maaßberg, H. ; Morita, S. ; Motojima, G. ; Nakata, M. ; Nunami, M. ; Pablant, N. ; Ogawa, K. ; Proll, J.H.E. ; Satake, S. ; Tanaka, K. ; Warmer, F. ; Wolf, R.C. ; Xanthopoulos, P. ; Yamada, H. ; Yasuhara, R. ; Yoshinuma, M. / The effect of transient density profile shaping on transport in large stellarators and heliotrons. In: Nuclear Fusion. 2017 ; Vol. 57, Nr. 6.

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title = "The effect of transient density profile shaping on transport in large stellarators and heliotrons",

abstract = "Transport studies of pellet fuelling experiments on LHD are reported. Spatio-temporal evolutions after pellet injection into LHD discharges show cases where central density increases on the time scale of particle transport processes. Both the temperature gradient and the density gradient change during the density relaxation, the latter even in sign. The resulting thermodynamic forces influence radial electric fields - both as a driving term but also by, e.g. affecting the E r dependence of ion transport. Magnetic fluctuations have been found to be induced by pellet injection but die out with the relaxation of the pressure profile.",

keywords = "density control, fueling, heliotrons, stellarators",

author = "A. Dinklage and R. Sakamoto and M. Yokoyama and K. Ida and J. Baldzuhn and Beidler, {C. D.} and S. Cats and {Mc Carthy}, K.J. and J. Geiger and M. Kobayashi and H. Maa{\ss}berg and S. Morita and G. Motojima and M. Nakata and M. Nunami and N. Pablant and K. Ogawa and J.H.E. Proll and S. Satake and K. Tanaka and F. Warmer and R.C. Wolf and P. Xanthopoulos and H. Yamada and R. Yasuhara and M. Yoshinuma",

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doi = "10.1088/1741-4326/aa6775",

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Dinklage, A, Sakamoto, R, Yokoyama, M, Ida, K, Baldzuhn, J, Beidler, CD, Cats, S, Mc Carthy, KJ, Geiger, J, Kobayashi, M, Maaßberg, H, Morita, S, Motojima, G, Nakata, M, Nunami, M, Pablant, N, Ogawa, K, Proll, JHE, Satake, S, Tanaka, K, Warmer, F, Wolf, RC, Xanthopoulos, P, Yamada, H, Yasuhara, R & Yoshinuma, M 2017, 'The effect of transient density profile shaping on transport in large stellarators and heliotrons', Nuclear Fusion, vol. 57, nr. 6, 066016. https://doi.org/10.1088/1741-4326/aa6775

The effect of transient density profile shaping on transport in large stellarators and heliotrons. / Dinklage, A.; Sakamoto, R.; Yokoyama, M.; Ida, K.; Baldzuhn, J.; Beidler, C. D.; Cats, S.; Mc Carthy, K.J.; Geiger, J.; Kobayashi, M.; Maaßberg, H.; Morita, S.; Motojima, G.; Nakata, M.; Nunami, M.; Pablant, N.; Ogawa, K.; Proll, J.H.E.; Satake, S.; Tanaka, K.; Warmer, F.; Wolf, R.C.; Xanthopoulos, P.; Yamada, H.; Yasuhara, R.; Yoshinuma, M.

In: Nuclear Fusion, Vol. 57, Nr. 6, 066016, 06.2017.

Onderzoeksoutput: Bijdrage aan tijdschrift › Tijdschriftartikel › Academic › peer review

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T1 - The effect of transient density profile shaping on transport in large stellarators and heliotrons

AU - Dinklage, A.

AU - Sakamoto, R.

AU - Yokoyama, M.

AU - Ida, K.

AU - Baldzuhn, J.

AU - Beidler, C. D.

AU - Cats, S.

AU - Mc Carthy, K.J.

AU - Geiger, J.

AU - Kobayashi, M.

AU - Maaßberg, H.

AU - Morita, S.

AU - Motojima, G.

AU - Nakata, M.

AU - Nunami, M.

AU - Pablant, N.

AU - Ogawa, K.

AU - Proll, J.H.E.

AU - Satake, S.

AU - Tanaka, K.

AU - Warmer, F.

AU - Wolf, R.C.

AU - Xanthopoulos, P.

AU - Yamada, H.

AU - Yasuhara, R.

AU - Yoshinuma, M.

PY - 2017/6

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N2 - Transport studies of pellet fuelling experiments on LHD are reported. Spatio-temporal evolutions after pellet injection into LHD discharges show cases where central density increases on the time scale of particle transport processes. Both the temperature gradient and the density gradient change during the density relaxation, the latter even in sign. The resulting thermodynamic forces influence radial electric fields - both as a driving term but also by, e.g. affecting the E r dependence of ion transport. Magnetic fluctuations have been found to be induced by pellet injection but die out with the relaxation of the pressure profile.

AB - Transport studies of pellet fuelling experiments on LHD are reported. Spatio-temporal evolutions after pellet injection into LHD discharges show cases where central density increases on the time scale of particle transport processes. Both the temperature gradient and the density gradient change during the density relaxation, the latter even in sign. The resulting thermodynamic forces influence radial electric fields - both as a driving term but also by, e.g. affecting the E r dependence of ion transport. Magnetic fluctuations have been found to be induced by pellet injection but die out with the relaxation of the pressure profile.

KW - density control

KW - fueling

KW - heliotrons

KW - stellarators

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DO - 10.1088/1741-4326/aa6775

M3 - Article

AN - SCOPUS:85019493248

VL - 57

JO - Nuclear Fusion

JF - Nuclear Fusion

SN - 0029-5515

IS - 6

M1 - 066016

ER -