Plasma rotation and momentum transport studies at JET
نویسندگان
چکیده
منابع مشابه
Momentum transport and plasma rotation spin up in TCV
This paper reports on the experimental observation of toroidal rotation braking and plasma spin up due to the growth and decay of Magnetohydrodynamic (MHD) modes in the Tokamak à Configuration Variable (TCV) operated in the ohmic regime. The results of numerical simulations of momentum spin up, with the goal of evaluating the momentum diffusion coefficient Dφ , are also presented. Unlike most e...
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At JET the dynamics of Internal Transport Barriers (ITBs) has been explored by trying to decouple the effects of heating on one hand and torque on the other with the ultimate objective of identifying the minimum torque required for the formation of transport barriers. The experiments shed light on the physics behind the initial trigger for ITBs, which often shows to be linked to the shape of th...
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Toroidal rotation is a key part of the design of ITER because of its ability to stabilize resistive wall modes. Understanding of the intrinsic rotation drive in plasmas is important because it will be difficult to externally torque a plasma the size of ITER. This section will cover phenomenology of the toroidal rotation and momentum transport processes. First, a historial understanding of heat ...
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Recently there has been widespread attention paid to rotation and momentum transport in tokamak plasmas. Of particular interest is spontaneous (intrinsic) toroidal rotation in plasmas without external momentum input. The strong co-current spontaneous rotation in enhanced confinement regimes, with ion thermal Mach numbers up to 0.3, may allow for resistive wall mode suppression in high-pressure ...
متن کاملHeuristic Representations of Plasma Momentum Transport
It is argued that the form commonly adopted for heuristic representation of tokamak momentum diffusion has major shortcomings, and that a non-diffusive momentum-flux term independent of velocity is more appropriate.
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ژورنال
عنوان ژورنال: Plasma Physics and Controlled Fusion
سال: 2006
ISSN: 0741-3335,1361-6587
DOI: 10.1088/0741-3335/48/12/001