The flush-mounted rail Langmuir probe array designed for the Alcator C-Mod vertical target plate divertor
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چکیده
منابع مشابه
Dissipative Divertor Operation in the Alcator C-mod Tokamak Dissipative Divertor Operation in the Alcator C-mod Tokamak
The achievement of large volumetric power losses (dissipation) in the Alcator C-Mod divertor region is demonstrated in two operational modes: radiative divertor and detached divertor. During radiative divertor operation, the fraction of SOL power lost by radiation is P R/PSOL0.8 with single null plasmas, n e < 2x10 20 m-3 and I < 1 MA. These plasmas sometimes have very high recycling, with nedi...
متن کاملAlcator C-Mod Inner Divertor Upgrade Design and Analysis
-: In 1993 there were indications that the C-Mod inner divertor was being over-loaded[3] . As a result, an inner divertor modification is being installed in C-Mod. The new design is intended to allow a change in profile of the divertor to accommodate a higher plasma triangularity , strengthen the inner vessel wall to survive 9.0 Tesla, 2.5 MA disruptions and, eliminate tile rotation. The therma...
متن کاملConfinement and divertor studies in Alcator C - Mod
Early results from the Alcator C-Mod tokamak indicate that ohmic energy confinement does not obey the Neo-Alcator scaling. Instead 'Ohmic L-mode' confinement, close to ITER89-P, is obtained, which substantially exceeds Neo-Alcator under some circumstances. ICRF-heated plasmas follow the same scaling. H-modes are observed both in ohmic and ICRF heated plasmas, with confinement enhancements of ab...
متن کاملComparison of Heat Flux Measurements by IR Thermography and Probes in the Alcator C-Mod Divertor
Alcator C-Mod was recently upgraded with multiple diagnostics to measure the heat flux footprint on the outer divertor: IR thermography, plasma conditions from Langmuir probes (LPs), and embedded calorimeters to measure local energy deposition. In addition to providing consistency checks of the inferred heat flux profiles, these measurements allow an assessment of the local sheath heat flux tra...
متن کاملPFC / JA - 96 - 23 Particle Drift Effects on the Alcator C - Mod Divertor
The sign of the toroidal magnetic field has a major effect on the divertor in Alcator C-Mod, determining whether the higher recycling is on the inboard or outboard side and leading to inboard/outboard temperature and density differences up to a factor of ten. A recently published paper [1] reported in detail on these observations, which are an indication of the importance of plasma particle dri...
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ژورنال
عنوان ژورنال: Review of Scientific Instruments
سال: 2018
ISSN: 0034-6748,1089-7623
DOI: 10.1063/1.5023905