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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Bhatnagar, V.P. |
| Copyright Year | 1995 |
| Description | Author affiliation: JET Joint Undertaking, Abingdon, UK (Bhatnagar, V.P.) |
| Abstract | Summary form only given. The interior of the JET tokamak has been extensively modified and a pumped divertor has been installed to study effective methods of power exhaust and impurity control. Due to its large size (R/sub 0/=2.96 m; a/sub p/=1 m; B/sub /spl phi//=3.4 T and I/sub p//spl les/6 MA) and proximity to reactor conditions, JET aims at providing physics support to ITER in the areas of divertor studies, energy confinement and fusion performance. The JET auxiliary equipment including heating and current drive systems (NBI=20 MW, ICRH=20 MW, LHCD=10 MW) permit a wide variety of operational modes including, most notably, the operation in D-T mixture and advanced tokamak operation with high /spl beta//sub p/, high boot-strap regimes with a central seed current. For the pumped divertor configuration, completely new ICRII antennas (A2) have been designed and installed to match the changed plasma profile. Also, current straps are grouped into 4-modules of 4-straps (toroidal extent /spl cong/1.8 m) each to improve the current drive capability. This required a new ICRH plant control electronics for automatic matching and phasing and features such as all immunity to cross-talk between different antenna modules have also been incorporated. The new ICRH system has coupled up to 15 MW of power to single-null, X-point divertor plasmas. A 26 MW of combined heating (15 MW of NBI) has produced ELMy H-modes in advanced tokamak regimes with /spl beta//sub p/=2.5, quasi steady-state H-factors (improvement over L-mode) of up to 2.5 and transient VII-modes with H=3. |
| File Size | 129827 |
| File Format | |
| ISBN | 0780326695 |
| ISSN | 07309244 |
| DOI | 10.1109/PLASMA.1995.531611 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 1995-06-05 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Plasma waves Tokamaks Cogeneration Impurities Inductors Physics Steady-state Plasma density Electron beams Ion beams |
| Content Type | Text |
| Resource Type | Article |
| Subject | Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering |
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