Double-Null Divertor Design for JT-60SU, A 10-MA Class Long-Pulse Tokamak
Abstract
The design of a double-null divertor for use in JT-60SU is presented. The free-boundary equilibrium code EFIT is used to establish a symmetric highly triangular double-null plasma shape. The baffle shapes are highly contoured to match the equilibrium, with the plasma-facing surfaces intersecting the flux surfaces at steep angles in the regions of high heat flux. These contoured surfaces also provide a tightly baffled design with small-aperture pumping gaps near both the inner and outer divertor strike points. The gaps provide adequate throughput of D{sub 2} gas for active control of impurity entrainment at reasonable pressures. The structural design is shown to be consistent with both forces from disruptions and thermal stress during vacuum vessel bakeout.
- Authors:
-
- General Atomics (United States)
- Japan Atomic Energy Research Institute (Japan)
- Publication Date:
- OSTI Identifier:
- 20845776
- Resource Type:
- Journal Article
- Journal Name:
- Fusion Science and Technology
- Additional Journal Information:
- Journal Volume: 39; Journal Issue: 1; Other Information: Copyright (c) 2006 American Nuclear Society (ANS), United States, All rights reserved. http://epubs.ans.org/; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1536-1055
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; APERTURES; CONTAINERS; CONTROL; DESIGN; DIVERTORS; EQUILIBRIUM; FIRST WALL; HEAT FLUX; JT-60U TOKAMAK; MAGNETIC SURFACES; PLASMA; PLASMA IMPURITIES; PULSES; PUMPING; SURFACES; THERMAL STRESSES
Citation Formats
West, W P, Friend, M E, Baxi, C B, Humphreys, D A, Leuer, J A, Petrie, T W, Reis, E E, Ishida, S, Kurita, G, Neyatani, Y, and Sakasai, A. Double-Null Divertor Design for JT-60SU, A 10-MA Class Long-Pulse Tokamak. United States: N. p., 2001.
Web.
West, W P, Friend, M E, Baxi, C B, Humphreys, D A, Leuer, J A, Petrie, T W, Reis, E E, Ishida, S, Kurita, G, Neyatani, Y, & Sakasai, A. Double-Null Divertor Design for JT-60SU, A 10-MA Class Long-Pulse Tokamak. United States.
West, W P, Friend, M E, Baxi, C B, Humphreys, D A, Leuer, J A, Petrie, T W, Reis, E E, Ishida, S, Kurita, G, Neyatani, Y, and Sakasai, A. 2001.
"Double-Null Divertor Design for JT-60SU, A 10-MA Class Long-Pulse Tokamak". United States.
@article{osti_20845776,
title = {Double-Null Divertor Design for JT-60SU, A 10-MA Class Long-Pulse Tokamak},
author = {West, W P and Friend, M E and Baxi, C B and Humphreys, D A and Leuer, J A and Petrie, T W and Reis, E E and Ishida, S and Kurita, G and Neyatani, Y and Sakasai, A},
abstractNote = {The design of a double-null divertor for use in JT-60SU is presented. The free-boundary equilibrium code EFIT is used to establish a symmetric highly triangular double-null plasma shape. The baffle shapes are highly contoured to match the equilibrium, with the plasma-facing surfaces intersecting the flux surfaces at steep angles in the regions of high heat flux. These contoured surfaces also provide a tightly baffled design with small-aperture pumping gaps near both the inner and outer divertor strike points. The gaps provide adequate throughput of D{sub 2} gas for active control of impurity entrainment at reasonable pressures. The structural design is shown to be consistent with both forces from disruptions and thermal stress during vacuum vessel bakeout.},
doi = {},
url = {https://www.osti.gov/biblio/20845776},
journal = {Fusion Science and Technology},
issn = {1536-1055},
number = 1,
volume = 39,
place = {United States},
year = {Mon Jan 15 00:00:00 EST 2001},
month = {Mon Jan 15 00:00:00 EST 2001}
}