Predicting the Toroidal Rotation Profile for ITER

Colin Chrystal, Brian A. Grierson, Shaun R. haskey, John S. deGrassie, Gary M. Staebler, Tuomas Tala, Antti Salmi

Research output: Contribution to conferenceConference AbstractScientific

Abstract

Experiments on DIII-D have increased confidence in a prediction of moderate intrinsic rotation in ITER[1] by investigating the effect of fast-ions and edge neutrals in rotation studies. In a large tokamak like ITER, intrinsic sources of rotation are important because evidence suggests they will be comparable to the neutral beam torque. Measurements of the ρ* dependence of intrinsic rotation in Electron Cyclotron Heated H-modes are consistent with previous measurements of the ρ* scaling of intrinsic torque and momentum confinement in beam heated plasmas with significant fast-ion fractions, showing that fast-ions did not corrupt those results. Also, the small differences in intrinsic rotation of closed and open divertor configurations show that momentum transport due to neutrals in the pedestal is not a significant hidden variable. This result is supported by the similarity of intrinsic rotation before and after the onset of detachment.
Original languageEnglish
Publication statusPublished - 2018
MoE publication typeNot Eligible
Event60th Annual Meeting of the APS Division of Plasma Physics - Portland, Portland, United States
Duration: 5 Nov 20189 Nov 2018
Conference number: 60
https://www.aps.org/units/dpp/meetings/annual/

Conference

Conference60th Annual Meeting of the APS Division of Plasma Physics
CountryUnited States
CityPortland
Period5/11/189/11/18
Internet address

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profiles
torque
momentum
ions
neutral beams
detachment
cyclotrons
confidence
scaling
configurations
predictions
electrons

Cite this

Chrystal, C., Grierson, B. A., haskey, S. R., deGrassie, J. S., Staebler, G. M., Tala, T., & Salmi, A. (2018). Predicting the Toroidal Rotation Profile for ITER. Abstract from 60th Annual Meeting of the APS Division of Plasma Physics, Portland, United States.
Chrystal, Colin ; Grierson, Brian A. ; haskey, Shaun R. ; deGrassie, John S. ; Staebler, Gary M. ; Tala, Tuomas ; Salmi, Antti. / Predicting the Toroidal Rotation Profile for ITER. Abstract from 60th Annual Meeting of the APS Division of Plasma Physics, Portland, United States.
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title = "Predicting the Toroidal Rotation Profile for ITER",
abstract = "Experiments on DIII-D have increased confidence in a prediction of moderate intrinsic rotation in ITER[1] by investigating the effect of fast-ions and edge neutrals in rotation studies. In a large tokamak like ITER, intrinsic sources of rotation are important because evidence suggests they will be comparable to the neutral beam torque. Measurements of the ρ* dependence of intrinsic rotation in Electron Cyclotron Heated H-modes are consistent with previous measurements of the ρ* scaling of intrinsic torque and momentum confinement in beam heated plasmas with significant fast-ion fractions, showing that fast-ions did not corrupt those results. Also, the small differences in intrinsic rotation of closed and open divertor configurations show that momentum transport due to neutrals in the pedestal is not a significant hidden variable. This result is supported by the similarity of intrinsic rotation before and after the onset of detachment.",
author = "Colin Chrystal and Grierson, {Brian A.} and haskey, {Shaun R.} and deGrassie, {John S.} and Staebler, {Gary M.} and Tuomas Tala and Antti Salmi",
note = "Poster presentation; 60th Annual Meeting of the APS Division of Plasma Physics ; Conference date: 05-11-2018 Through 09-11-2018",
year = "2018",
language = "English",
url = "https://www.aps.org/units/dpp/meetings/annual/",

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Chrystal, C, Grierson, BA, haskey, SR, deGrassie, JS, Staebler, GM, Tala, T & Salmi, A 2018, 'Predicting the Toroidal Rotation Profile for ITER' 60th Annual Meeting of the APS Division of Plasma Physics, Portland, United States, 5/11/18 - 9/11/18, .

Predicting the Toroidal Rotation Profile for ITER. / Chrystal, Colin; Grierson, Brian A.; haskey, Shaun R.; deGrassie, John S.; Staebler, Gary M.; Tala, Tuomas; Salmi, Antti.

2018. Abstract from 60th Annual Meeting of the APS Division of Plasma Physics, Portland, United States.

Research output: Contribution to conferenceConference AbstractScientific

TY - CONF

T1 - Predicting the Toroidal Rotation Profile for ITER

AU - Chrystal, Colin

AU - Grierson, Brian A.

AU - haskey, Shaun R.

AU - deGrassie, John S.

AU - Staebler, Gary M.

AU - Tala, Tuomas

AU - Salmi, Antti

N1 - Poster presentation

PY - 2018

Y1 - 2018

N2 - Experiments on DIII-D have increased confidence in a prediction of moderate intrinsic rotation in ITER[1] by investigating the effect of fast-ions and edge neutrals in rotation studies. In a large tokamak like ITER, intrinsic sources of rotation are important because evidence suggests they will be comparable to the neutral beam torque. Measurements of the ρ* dependence of intrinsic rotation in Electron Cyclotron Heated H-modes are consistent with previous measurements of the ρ* scaling of intrinsic torque and momentum confinement in beam heated plasmas with significant fast-ion fractions, showing that fast-ions did not corrupt those results. Also, the small differences in intrinsic rotation of closed and open divertor configurations show that momentum transport due to neutrals in the pedestal is not a significant hidden variable. This result is supported by the similarity of intrinsic rotation before and after the onset of detachment.

AB - Experiments on DIII-D have increased confidence in a prediction of moderate intrinsic rotation in ITER[1] by investigating the effect of fast-ions and edge neutrals in rotation studies. In a large tokamak like ITER, intrinsic sources of rotation are important because evidence suggests they will be comparable to the neutral beam torque. Measurements of the ρ* dependence of intrinsic rotation in Electron Cyclotron Heated H-modes are consistent with previous measurements of the ρ* scaling of intrinsic torque and momentum confinement in beam heated plasmas with significant fast-ion fractions, showing that fast-ions did not corrupt those results. Also, the small differences in intrinsic rotation of closed and open divertor configurations show that momentum transport due to neutrals in the pedestal is not a significant hidden variable. This result is supported by the similarity of intrinsic rotation before and after the onset of detachment.

M3 - Conference Abstract

ER -

Chrystal C, Grierson BA, haskey SR, deGrassie JS, Staebler GM, Tala T et al. Predicting the Toroidal Rotation Profile for ITER. 2018. Abstract from 60th Annual Meeting of the APS Division of Plasma Physics, Portland, United States.