Overview of results from the National Spherical Torus Experiment (NSTX)
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منابع مشابه
Overview of results from the National Spherical Torus Experiment (NSTX)
The mission of the National Spherical Torus Experiment (NSTX) is the demonstration of the physics basis required to extrapolate to the next steps for the spherical torus (ST), such as a plasma facing component test facility (NHTX) or an ST based component test facility (ST-CTF), and to support ITER. Key issues for the ST are transport, and steady state high β operation. To better understand ele...
متن کاملPower Balance in Neutral Beam Heated Discharges on the National Spherical Torus Experiment (NSTX)
The understanding of power balance is an important aspect of magnetic confinement. It is particularly important to understand loss mechanisms and transport. The inherently low toroidal field of low aspect ratio machines means that much of the analysis of standard aspect ratio devices must be modified. Typically, analyses of confinement and transport in large aspect ratio devices use the approxi...
متن کاملNational Spherical Torus Experiment Liquid Lithium Divertor
Recent NSTX high power divertor experiments have shown significant and recurring benefits of solid lithium coatings on PFC’s to the performance of divertor plasmas in both Land Hmode confinement regimes heated by high-power neutral beams. The next step in this work is installation of a liquid lithium divertor (LLD) to achieve density control for inductionless current drive capability (e.g., abo...
متن کاملOverview of the beam emission spectroscopy diagnostic system on the National Spherical Torus Experiment.
A beam emission spectroscopy (BES) system has been installed on the National Spherical Torus Experiment (NSTX) to study ion gyroscale fluctuations. The BES system measures D(α) emission from a deuterium neutral heating beam. The system includes two optical views centered at r/a≈0.45 and 0.85 and aligned to magnetic field pitch angles at the neutral beam. f/1.5 collection optics produce 2-3 cm s...
متن کاملImplementation of βN Control in the National Spherical Torus Experiment
We have designed and constructed a system for control of the normalized β in the National Spherical Torus Experiment [M. Ono, et al., Nuclear Fusion 40, 557 (2000)]. A PID operator is applied to the difference between the present value of βN (from realtime equilibrium reconstruction) and a time-dependent request, in order to calculate the required injected power. This injected power request is ...
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ژورنال
عنوان ژورنال: Nuclear Fusion
سال: 2009
ISSN: 0029-5515,1741-4326
DOI: 10.1088/0029-5515/49/10/104016