First observation of ELM pacing with vertical jogs in a spherical torus

S. P. Gerhardt; J. W. Ahn; J. M. Canik; R. Maingi; R. Bell; D. Gates; Robert James Goldston; R. Hawryluk; B. P. Le Blanc; J. Menard; A. C. Sontag; S. Sabbagh; K. Tritz

doi:10.1088/0029-5515/50/6/064015

First observation of ELM pacing with vertical jogs in a spherical torus

S. P. Gerhardt, J. W. Ahn, J. M. Canik, R. Maingi, R. Bell, D. Gates, Robert James Goldston, R. Hawryluk, B. P. Le Blanc, J. Menard, A. C. Sontag, S. Sabbagh, K. Tritz

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23 Scopus citations

Abstract

Experiments in a number of conventional aspect ratio tokamaks have been successful in pacing edge localized modes (ELMs) by rapid vertical jogging of the plasma. This paper demonstrates the first pacing of ELMs in a spherical torus plasma. Applied 30 Hz vertical jogs synchronized the ELMs with the upward motion of the plasma. 45 Hz jogs also lead to an increase in the ELM frequency, though the synchronization of the ELMs and jogs was unclear. A reduction in the ELM energy was observed at the higher driven ELM frequencies.

Original language	English (US)
Article number	064015
Journal	Nuclear Fusion
Volume	50
Issue number	6
DOIs	https://doi.org/10.1088/0029-5515/50/6/064015
State	Published - 2010

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
Condensed Matter Physics

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title = "First observation of ELM pacing with vertical jogs in a spherical torus",

abstract = "Experiments in a number of conventional aspect ratio tokamaks have been successful in pacing edge localized modes (ELMs) by rapid vertical jogging of the plasma. This paper demonstrates the first pacing of ELMs in a spherical torus plasma. Applied 30 Hz vertical jogs synchronized the ELMs with the upward motion of the plasma. 45 Hz jogs also lead to an increase in the ELM frequency, though the synchronization of the ELMs and jogs was unclear. A reduction in the ELM energy was observed at the higher driven ELM frequencies.",

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year = "2010",

doi = "10.1088/0029-5515/50/6/064015",

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T1 - First observation of ELM pacing with vertical jogs in a spherical torus

AU - Gerhardt, S. P.

AU - Ahn, J. W.

AU - Canik, J. M.

AU - Maingi, R.

AU - Bell, R.

AU - Gates, D.

AU - Goldston, Robert James

AU - Hawryluk, R.

AU - Le Blanc, B. P.

AU - Menard, J.

AU - Sontag, A. C.

AU - Sabbagh, S.

AU - Tritz, K.

PY - 2010

Y1 - 2010

N2 - Experiments in a number of conventional aspect ratio tokamaks have been successful in pacing edge localized modes (ELMs) by rapid vertical jogging of the plasma. This paper demonstrates the first pacing of ELMs in a spherical torus plasma. Applied 30 Hz vertical jogs synchronized the ELMs with the upward motion of the plasma. 45 Hz jogs also lead to an increase in the ELM frequency, though the synchronization of the ELMs and jogs was unclear. A reduction in the ELM energy was observed at the higher driven ELM frequencies.

AB - Experiments in a number of conventional aspect ratio tokamaks have been successful in pacing edge localized modes (ELMs) by rapid vertical jogging of the plasma. This paper demonstrates the first pacing of ELMs in a spherical torus plasma. Applied 30 Hz vertical jogs synchronized the ELMs with the upward motion of the plasma. 45 Hz jogs also lead to an increase in the ELM frequency, though the synchronization of the ELMs and jogs was unclear. A reduction in the ELM energy was observed at the higher driven ELM frequencies.

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DO - 10.1088/0029-5515/50/6/064015

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VL - 50

JO - Nuclear Fusion

JF - Nuclear Fusion

IS - 6

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ER -

First observation of ELM pacing with vertical jogs in a spherical torus

Abstract

All Science Journal Classification (ASJC) codes

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