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Results 1 - 10
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3,635
injection
"... Pellet ELM pacemaking is one of the recently proposed methods to mitigate the ELM caused heat load on plasma facing components of an ITER class tokamak. The increase of the ELM frequency by frequent injection of shallow penetrating cryogenic pellets seems to be a work-ing technique which was demonst ..."
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Pellet ELM pacemaking is one of the recently proposed methods to mitigate the ELM caused heat load on plasma facing components of an ITER class tokamak. The increase of the ELM frequency by frequent injection of shallow penetrating cryogenic pellets seems to be a work-ing technique which
Status of the Jet High Frequency Pellet Injector
"... for unacceptable thermal loads on the wall when their amplitude is too high. The injector was also required to have the capability to inject pellets for plasma fuelling. To reach this double goal, the injector has to be capable to produce and accelerate either small pellets to trigger ELMs (pace mak ..."
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for unacceptable thermal loads on the wall when their amplitude is too high. The injector was also required to have the capability to inject pellets for plasma fuelling. To reach this double goal, the injector has to be capable to produce and accelerate either small pellets to trigger ELMs (pace
Assessment of Independent Fuelling and ELM Pace Making by Pellet Injection in ITER
"... Abstract. The possibility of independent plasma fuelling by high field side (HFS) DT pellet injection and ELM pace-making by low field side (LFS) D pellet injection is considered for ITER. The model used in the analysis takes into account the outward drift of the ablated pellet substance. The simul ..."
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. The simulations show that the residual fuelling efficiency from the LFS injection is a non-monotonic function of the pellet size. It is shown that it can be possible to use the pellets of similar size, speed and frequency for HFS fuelling with ELM pace-making and for LHS ELM pace-making with low residual core
Pellet Induced Perturbations in the Plasma Edge
"... Solid hydrogen isotope pellets are used for fueling in tokamaks, but recently they are applied for ELM mitigation as well. Increasing the ELM frequency by external pacemaking using pellet injection results in a reduced ELM energy, which is essential for the target lifetime in ITER and a future fusio ..."
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Solid hydrogen isotope pellets are used for fueling in tokamaks, but recently they are applied for ELM mitigation as well. Increasing the ELM frequency by external pacemaking using pellet injection results in a reduced ELM energy, which is essential for the target lifetime in ITER and a future
MHD Computational Study on Pellet Injection
, 1999
"... A fluid code is developed to study pellet injection into magnetically confined plasma. Since there are large differences between orders of pellet and plasma quantities, the code uses the Cubic-Interpolated Psudoparticle method that gives stable and less diffusive results. It is successfully applied ..."
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A fluid code is developed to study pellet injection into magnetically confined plasma. Since there are large differences between orders of pellet and plasma quantities, the code uses the Cubic-Interpolated Psudoparticle method that gives stable and less diffusive results. It is successfully applied
Pellet Fuelling and ELMy H-mode Physics in JET The JET Team 1, prepared by L.D. Horton 1) JET Joint Undertaking, Abingdon, U.K.
"... Abstract. As the reference operating regime for ITER, investigations of the ELMy H-mode have received high priority in the JET experimental programme. Recent experiments have concentrated in particular on operation simultaneously at high density and high confinement using high field side (HFS) pelle ..."
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-mode levels. Initial experiments using control of the pellet injection frequency have shown that density and confinement can simultaneously be increased close to the values necessary for ITER. The boundaries of the available ELMy H-mode operational space have also been extensively explored. The power
Spectra of magnetic perturbations triggered by pellets in JET plasmas
"... Abstract. Aiming at investigating ELM pacing for future application on ITER, experiments have been conducted on JET injecting pellets in different plasma configurations, including high confinement regimes with type-I and type-III ELMs, low confinement regimes and ohmically heated plasmas. The magnet ..."
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Abstract. Aiming at investigating ELM pacing for future application on ITER, experiments have been conducted on JET injecting pellets in different plasma configurations, including high confinement regimes with type-I and type-III ELMs, low confinement regimes and ohmically heated plasmas
Fueling efficiency of pellet injection on DIII-D
, 1998
"... Pellet injection has been used on the DIII-D tokamak to study density limits and particle transport in H-mode and inner wall limited L-mode plasmas. These experiments have provided a variety of conditions in which to examine the fueling efficiency of pellets injected into DIIID plasmas. The fueling ..."
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Pellet injection has been used on the DIII-D tokamak to study density limits and particle transport in H-mode and inner wall limited L-mode plasmas. These experiments have provided a variety of conditions in which to examine the fueling efficiency of pellets injected into DIIID plasmas. The fueling
Deposition Of Fuel Pellets Injected Into Tokamak Plasmas
, 1998
"... Pellet injection has been used on tokamak devices in a number of experiments to provide plasma fueling and density profile control. The mass deposition of these fuel pellets, defined as the change in density profile caused by the pellet, has been found to show an outward displacement of the ablated ..."
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Pellet injection has been used on tokamak devices in a number of experiments to provide plasma fueling and density profile control. The mass deposition of these fuel pellets, defined as the change in density profile caused by the pellet, has been found to show an outward displacement of the ablated
Results 1 - 10
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3,635
