Rapid shutdown experiments with one and two gas jets on Alcator C-Mod
| العنوان: | Rapid shutdown experiments with one and two gas jets on Alcator C-Mod |
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| المؤلفون: | Jerry Hughes, S.L. Milora, Michael Brookman, Theodore Golfinopoulos, D.G. Whyte, J.R. Walk, Valerie Izzo, Matthew Reinke, Robert Granetz, S.K. Combs, G.M. Olynyk |
| المصدر: | Nuclear Fusion. 53:092001 |
| بيانات النشر: | IOP Publishing, 2013. |
| سنة النشر: | 2013 |
| مصطلحات موضوعية: | Physics, Nuclear and High Energy Physics, Tokamak, Safety factor, Toroid, Mechanics, Plasma, Effective radiated power, Condensed Matter Physics, law.invention, Nuclear physics, Alcator C-Mod, Physics::Plasma Physics, law, Magnetohydrodynamic drive, Magnetohydrodynamics |
| الوصف: | Massive gas injection rapid shutdown experiments have been conducted on the Alcator C-Mod tokamak using two toroidally separated gas injectors, in order to investigate the effect of multiple gas injection locations on the toroidal asymmetry in the radiated power. Toroidal radiation asymmetry is diagnosed by an array of six single-channel photodiodes mounted on the vessel wall. The presence of magnetohydrodynamic (MHD) activity is diagnosed using an array of magnetic pickup (Mirnov) coils, mounted on stalks on the vessel wall. Scans were conducted of the relative timing between the two jets, of the 95th percentile safety factor, and of the plasma elongation. It is observed that firing the two gas jets so that the injected impurities arrive at the plasma at nearly the same time produced an increase in the toroidal radiation asymmetry. In addition, the radiation asymmetry in the thermal quench phase correlates with the growth rate of low toroidal mode number MHD modes, indicating that these mode(s) are playing a role in setting the radiation asymmetry. |
| تدمد: | 1741-4326 0029-5515 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::6bd4681c49231d5d2dc16473310be30c https://doi.org/10.1088/0029-5515/53/9/092001 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........6bd4681c49231d5d2dc16473310be30c |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 17414326 00295515 |
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