Author: Weston M. StaceyPublisher:
ISBN:
Category : Fusion reactors
Languages : en
Pages : 22
Book Description
The Effects of Neutral Beam Injection on Impurity Transport in Tokamaks
Author: Weston M. StaceyPublisher:
ISBN:
Category : Fusion reactors
Languages : en
Pages : 22
Book Description
Impurity Transport During Neutral Beam Injection in the ISX-B Tokamak
Author: Rotation and Impurity Transport in a Tokamak Plasma with Directed Neutral Beam Injection
Author: W. M. Stacey (Jr)Rotation and Impurity Transport in a Tokamak Plasma with Directed Neutral Beam Injection
Author: Weston M. StaceyPublisher:
ISBN:
Category : Fusion reactors
Languages : en
Pages : 25
Book Description
Computational Studies of Impurity Effects, Impurity Control, and Neutral Beam Injection in Large Tokamaks
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Computational models have been constructed for the Princeton Large Torus (PLT), the Poloidal Divertor Experiment (PDX), and the Tokamak Fusion Test Reactor (TFTR). These models have been calibrated by comparison with current experiments and used to predict plasma parameters and delineate favorable modes of operation for future experiments. The models for PLT emphasize plasma transport and neutral beam injection heating. The models for PDX emphasize the capability of divertors for impurity and recycling control in intense neutral-beam-heated tokamaks, as well as optimization of the MHD properties of divertor-equipped tokamaks. The TFTR calculations stress the fusion aspects of a large, circular cross-section D-T tokamak with intense neutral beam injection.
Computational Studies of Impurity Effects, Impurity Control, and Neutral Beam Injection in Large Tokamaks
Author: Princeton University. Plasma Physics LaboratoryPublisher:
ISBN:
Category : Tokamaks
Languages : en
Pages : 20
Book Description
Energy Research Abstracts
Author: Neoclassical Theory for Rotation and Impurity Transport in Tokamaks with Neural Beam Injection
Author: Weston M. StaceyPublisher:
ISBN:
Category : Ions
Languages : en
Pages : 21
Book Description
Scientific and Technical Aerospace Reports
Author: Ion Transport Studies on the PLT Tokamak During Neutral Beam Injection
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Radial transport of ions during co- and counter-neutral beam heating in the PLT tokamak has been studied, using molybdenum and scandium ions as tracer elements. The time evolution of the radial profiles of several ionization stages of both elements, injected by laser blowoff during the neutral beam heating, were measured under three significantly different beam-plasma combinations. No noticeable differences in the radial profiles attributable to the beam direction were observed. However, a given injected amount resulted in considerably larger interior concentrations of the tracer element in the counter-beam heating cases, suggesting larger penetration of the plasma periphery. Computer simulation with the MIST code suggests a net inward drift of the order 103 cm/sec superposed to a diffusion coefficient of the order 104 cm2/sec for both scandium and molybdenum ions. Injection of larger amounts of the tracer element, sufficient to cause measurable central electron temperature changes, resulted in dramatic changes in ion-state distributions, making some appear peaked in the center while others disappeared. This effect could be produced with both co- and counter-beam heating, but with lesser amounts in the latter case. It is interpreted as rearrangement of the ionization balance, rather than any preferential accumulation of the injected element.