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Disruption mitigation using ion cyclotron wave in ADITYA tokamak

التفاصيل البيبلوغرافية
العنوان: Disruption mitigation using ion cyclotron wave in ADITYA tokamak
المؤلفون: Sameer K. Jha, Neetu Patel, Harshita Raj, K. A. Jadeja, Rachana Rajpal, Jiten Ghosh, Moti Makwana, Y. C. Saxena, Pratip K. Chattopadhyay, E. V. Praveenlal, Raju Daniel, Pravesh Dhyani, Raj Singh, N. Ramaiya, V. K. Panchal, K. M. Patel, S. Joisa, A. Sen, C. V. S. Rao, Umesh Nagora, S. B. Bhatt, K. Mishra, Malay Bikas Chowdhuri, S. Purohit, R. Pal, R. K. Jha, P. K. Atrey, Rakesh L. Tanna, B. K. Shukla, Chhaya Chavda, Sunil Kumar, Kiramat Shah, S.V. Kulkarni, R. K. Manchanda, Suman Dolui, C. N. Gupta, Jayesh Raval, Vismaysinh Raulji
المصدر: Physics of Plasmas. 28:052501
بيانات النشر: AIP Publishing, 2021.
سنة النشر: 2021
مصطلحات موضوعية: Physics, Tokamak, law, Cyclotron, Limiter, Plasma, Mechanics, Ponderomotive force, Magnetohydrodynamics, Condensed Matter Physics, ADITYA, law.invention, Ion
الوصف: Controlling and mitigating plasma disruptions are a matter of serious concern for tokamak operation since they can cause serious damage to the machine. Dedicated experiments on disruption mitigation have been carried out in ADITYA (R = 75 cm, a = 25 cm), an Ohmically heated circular limiter tokamak. A rapid growth of magneto hydrodynamic (MHD) modes is found to be the major cause of disruptions in ADITYA tokamak. Stimulated disruptions induced by hydrogen gas puffing are successfully mitigated through stabilization of these MHD modes by applying a biased-electrode placed inside the last-closed flux surface prior to the gas injection. However, as biased electrodes cannot be placed inside the plasma in bigger tokamaks, the application of ion-cyclotron waves (ICWs) prior to disruption has been successfully attempted to mitigate disruptions through stabilization of MHD modes in ADITYA tokamak. The amplitude of MHD modes (m/n = 3/1, 2/1) is significantly reduced upon the application of ICW prior to disruption, and the stimulated disruptions are successfully mitigated by preventing the growth and overlapping of these MHD modes. These experimental results demonstrate that MHD driven disruptions may be mitigated due to stabilization of m = 2 modes by ponderomotive force of the IC waves.
تدمد: 1089-7674
1070-664X
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_________::f0a2d1277408be2b4f4b2df0bb208a10
https://doi.org/10.1063/5.0037384
رقم الأكسشن: edsair.doi...........f0a2d1277408be2b4f4b2df0bb208a10
قاعدة البيانات: OpenAIRE
الوصف
تدمد:10897674
1070664X