Control of plasma stored energy for burn control using DIII-D in-vessel coils
Name
Control of plasma stored energy for burn control using DIII-D in-vessel coils.pdf
Size
4.27 MB
Format
Adobe PDF
Checksum (MD5)
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Author(s)
Hawryluk, R. J.
Eidietis, N. W.
Grierson, B. A.
Hyatt, A. W.
Kolemen, E.
Logan, N. C.
Nazikian, R.
Paz-Soldan, C.
Solomon, W. M.
Wolfe, Stephen M
Date Issued
April 2015
Journal
Nuclear Fusion
Publisher
IOP Publishing
Citation
Hawryluk, R. J., et al. “Control of Plasma Stored Energy for Burn Control Using DIII-D in-Vessel Coils.” Nuclear Fusion, vol. 55, no. 5, May 2015, p. 053001.
Version
Author's final manuscript
Abstract
A new approach has been experimentally demonstrated to control the stored energy by applying a non-axisymmetric magnetic field using the DIII-D in-vessel coils to modify the energy confinement time. In future burning plasma experiments as well as magnetic fusion energy power plants, various concepts have been proposed to control the fusion power. The fusion power in a power plant operating at high gain can be related to the plasma stored energy and hence, is a strong function of the energy confinement time. Thus, an actuator that modifies the confinement time can be used to adjust the fusion power. In relatively low collisionality DIII-D discharges, the application of non-axisymmetric magnetic fields results in a decrease in confinement time and density pumpout. Gas puffing was used to compensate the density pumpout in the pedestal while control of the stored energy was demonstrated by the application of non-axisymmetric fields.
MIT Department
Massachusetts Institute of Technology. Plasma Science and Fusion Center
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1088/0029-5515/55/5/053001
