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26 April 2024 |
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Formation of advanced tokamak plasmas without the use of an ohmic-heating solenoid | | S Shiraiwa
; S Ide
; S Itoh
; O Mitarai
; O Naito
; T Ozeki
; Y Sakamoto
; T Suzuki
; Y Takase
; S Tanaka
; T Taniguchi
; M Aramasu
; T Fujita
; T Fukuda
; X Gao
; M Gryaznevich
; K Hanada
; E Jotaki
; Y Kamada
; T Maekawa
; Y Miura
; K Nakamura
; T Nishi
; H Tanaka
; K Ushigusa
;
; | | Date: |
23 Jan 2004 | | Journal: | Phys Rev Lett, 92 (3), 035001 | | Abstract: | A new operational scenario of advanced tokamak formation was demonstrated in the JT-60U tokamak. This was accomplished by electron cyclotron and lower hybrid waves, neutral beam injection, and the loop voltage supplied by the vertical field and shaping coils. The Ohmic heating (OH) solenoid was not used but a small inboard coil (part of the shaping coil), providing less than 20% of total poloidal flux, was used. The plasma thus obtained had both internal and edge transport barriers, with an energy confinement time of 1.6 times H-mode scaling, a poloidal beta of 3.6, and a normalized beta of 1.6, and a large bootstrap current fraction (>90%). This result opens up a possibility to reduce, and eventually eliminate, the OH solenoid from a tokamak reactor, which will greatly improve its economic competitiveness. | | Source: | PubMed, pmid14753880 | | Services: | Forum | Review | Favorites | |
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