Mhd Simulations of Massive Gas Injection into Alcator C-mod and Diii-d Plasmas
نویسندگان
چکیده
DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof.
منابع مشابه
Role of Transport and MHD Stability in Simulations of H-mode Pedestal Development in ELMy Plasmas
This study addresses the development of a scaling of the H-mode pedestal in tokamak plasmas with type I ELMs. In particular, the scaling studies carried out illustrate the dependence of the pedestal properties and the resulting divertor heat load width as a function of plasma elongation and plasma current. H-mode pedestal profiles for DIII-D and Alcator C-Mod tokamaks are considered: DIII-D for...
متن کاملGas Jet Disruption Mitigation Studies on Alcator C - Mod and DIII - D
High-pressure noble gas jet injection is a mitigation technique which potentially satisfies the requirements of fast response time and reliability, without degrading subsequent discharges. Previously reported gas jet experiments on DIII-D showed good success at reducing deleterious disruption effects. In this paper, results of recent gas jet disruption mitigation experiments on Alcator C-Mod an...
متن کامل1 Edge dimensionless identity experiment on DIII - D and Alcator
Experiments were carried out to study the similarity of H-mode (High confinement mode) physics on the Alcator C-Mod [1] and DIII-D [2] tokamaks comparing plasmas with matched local edge dimensionless parameters (β, ρ∗, ν∗, q95) and shape (ε, κ, δ). It was observed that matching local values of the dimensionless parameters on top of the H-mode pedestals produces similar Te and ne profiles across...
متن کاملLithium Pellet Injection Experiments on the Alcator C-mod Tokamak Lithium Pellet Injection Experiments on the Alcator C-mod Tokamak Lithium Pellet Injection Experiments on the Alcator C-mod Tokamak
A pellet enhanced performance (PEP) mode, showing significantly reduced core transport, is regularly obtained after the injection of deeply penetrating lithium pellets into Alcator C-Mod discharges. These transient modes, which typically persist about two energy confinement times, are characterized by a steep pressure gradient (p <; a/5) in the inner third of the plasma, indicating the presence...
متن کاملMHD Simulations for Studies of Disruption Mitigation by High Pressure Noble Gas Injection
The problem of disruptions is a major challenge for ITER which establishes engineering and operational limits. MHD simulations including radiation and atomic physics have the capability of extending results of mitigation experiments on present devices to accurate predictions for ITER. The role of MHD in cases where impurity penetration is shallow is seen in a series of Alcator C-Mod simulations...
متن کامل