Y Koide et al 1998 Plasma Phys. Control. Fusion 40 97 doi:10.1088/0741-3335/40/1/005
Comparison of internal transport barriers in JT-60U and DIII-D NCS discharges
Y Koide
, K H Burrell
, B W Rice§ and T Fujita
Negative central shear discharges in JT-60U revealed an internal transport barrier (ITB) which is located at larger minor radii 
than those in other devices and is accompanied by a clear reduction in 
. In order to investigate this origin of the unique and favourable feature for future reactors, the discharge parameters were compared with those in DIII-D, where ITB was at smaller minor radii 
and less reduction in was observed. Strong negative magnetic shear was found to be related to the reduction in . The thin skin depth in JT-60U originating from high 
, together with the continuous decrease in 
, was effective in moving the ITB location to larger minor radii and in sustaining the strong negative shear.
- PACS
- Subjects
- Dates
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Issue 1 (January 1998)
Received 30 September 1997
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Comparison of internal transport barriers in JT-60U and DIII-D NCS discharges
Y Koide et al 1998 Plasma Phys. Control. Fusion 40 97
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