Loading...
Please wait, while we are loading the content...
Similar Documents
PFC / JA-96-38 High Power Density H-Modes in Alcator C-Mod
| Content Provider | Semantic Scholar |
|---|---|
| Author | Takase Boivin Bombarda Bonoli, P. T. Fiore Garnier Golovato Granetz, Robert S. Greenwald Horne Hubbard Hutchinson, Ian H. Irby LaBombard Lipschultz Marmar Mazurenko Mccracken Shea, P. O. Porkolab, Miklos Reardon Rice Rost Schachter Snipes Stek, Pam Terry Watterson Welch |
| Copyright Year | 2014 |
| Abstract | Optimization studies of energy confinement in H-mode plasmas heated by ICRF waves were performed on the compact high-field tokamak Alcator CMod. Reduction of the radiated power from the main plasma by boronization of the molybdenum first wall made a major impact on improving the quality of Hmode, as characterized by the confinement enhancement factor over the ITER89P L-mode scaling, HITER89-P. Longer ELM-free periods became possible, and HITEL89-p = 2.5 was achieved transiently, but in this mode of operation impurity accumulation lead to eventual termination of H-mode. More favorable high quality quasi-steady-state H-modes which lead to steady-state levels of density (We = 4 x 1020 m-3 ), stored energy (HITER89-P = 2.0, ON = 1.5), and radiated power (P "in/p 1 . 30%) were also achieved. This mode of operation is characterized by high levels of continuous D, emission comparable to the L-mode level, with very little or no ELM activity. The H-mode behavior was affected by controlling the neutral pressure by wall conditioning and gas puffing. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://dspace.mit.edu/bitstream/handle/1721.1/95306/96ja038_full.pdf?sequence=1 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
