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- 저자 : Ali Asghar Molavi-Choobini (검색결과 1 건)
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Study of Lower Hybrid Current Drive for the Demonstration Reactor
Ali Asghar Molavi-Choobini,Ahmad Naghidokht,Zahra Karami 한국원자력학회 2016 Nuclear Engineering and Technology Vol.48 No.3
Steady-state operation of a fusion power plant requires external current drive to minimizethe power requirements, and a high fraction of bootstrap current is required. One of theexternal sources for current drive is lower hybrid current drive, which has been widelyapplied in many tokamaks. Here, using lower hybrid simulation code, we calculate electrondistribution function, electron currents and phase velocity changes for two options ofdemonstration reactor at the launched lower hybrid wave frequency 5 GHz. Two plasmascenarios pertaining to two different demonstration reactor options, known as pulsed(Option 1) and steady-state (Option 2) models, have been analyzed. We perceive thatelectron currents have major peaks near the edge of plasma for both options but withhigher efficiency for Option 1, although we have access to wider, more peripheral regionsfor Option 2. Regarding the electron distribution function, major perturbations are atpositive velocities for both options for flux surface 16 and at negative velocities for bothoptions for flux surface 64.
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