ECRH Two-Pulse (Breakdown and Heating) Experiments on Tokamaks Aditya-U and SST-1

IF 1.3 4区 物理与天体物理 Q3 PHYSICS, FLUIDS & PLASMAS
Braj Kishore Shukla;Joydeep Ghosh;D. Raju;R. L. Tanna;Vipul Tanna;Upendra Prasad;Jatin Patel;Harshida Patel;Dharmesh Purohit;Mahesh Kushwah;S. K. Pathak;P. K. Atrey;Hardik Mistry;K. G. Parmar;Manoj Gupta;Ranjana Manchanda;Kiti Mahajan;Aveg Chauhan;D. Raval;Rohit Kumar;Suman Aich;K. A. Jadeja;K. M. Patel;Harshita Raj;Tanmay Macwan;V. Balakrishnan;Shivam Gupta;M. N. Makwana;K. S. Shah;C. N. Gupta;M. B. Chowdhuri;Umesh Nagora;Varsha Siju;Jayesh Raval;K. Tahiliani;Pramila Gautam;E. V. Praveenlal;P. K. Chattopadhyay
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Abstract

Electron cyclotron resonance heating (ECRH) two-pulse experiments are carried out on the tokamaks SST-1 and Aditya-U using single 42-GHz gyrotron. Initially, the system was used to carry out either breakdown or heating. A new anode modulator power supply with fast rise time and fall time (1 ms) has been integrated with 42-GHz gyrotron system, which facilitate to switch the gyrotron for more than one pulse within plasma shot. The first pulse is used for the plasma breakdown at low-loop voltage and second pulse is used for plasma heating. The power in the first pulse is maintained low (less than 150 kW) for the breakdown at fundamental harmonic, while power in the second pulse is more than 200 kW for plasma heating. In both the tokamaks, SST-1 and Aditya-U, two pulse experiments have been carried out and heating effect is observed clearly in Aditya-U tokamak during second ECRH pulse. This article discusses about the two ECRH pulse experiments on both the tokamaks SST-1 and Aditya-U.
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来源期刊
IEEE Transactions on Plasma Science
IEEE Transactions on Plasma Science 物理-物理:流体与等离子体
CiteScore
3.00
自引率
20.00%
发文量
538
审稿时长
3.8 months
期刊介绍: The scope covers all aspects of the theory and application of plasma science. It includes the following areas: magnetohydrodynamics; thermionics and plasma diodes; basic plasma phenomena; gaseous electronics; microwave/plasma interaction; electron, ion, and plasma sources; space plasmas; intense electron and ion beams; laser-plasma interactions; plasma diagnostics; plasma chemistry and processing; solid-state plasmas; plasma heating; plasma for controlled fusion research; high energy density plasmas; industrial/commercial applications of plasma physics; plasma waves and instabilities; and high power microwave and submillimeter wave generation.
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