Prompt loss of beam ions in KSTAR plasmas
作者： Jun Young Kim , T. Rhee , Junghee Kim , S. W. Yoon , B. H. Park
DOI: 10.1063/1.4966588
关键词: Atomic physics 、 Computational physics 、 Physics 、 Neutral beam injection 、 Momentum 、 Beam (structure) 、 Orbit (dynamics) 、 Toroid 、 Fusion power 、 KSTAR 、 Plasma
摘要: For a toroidal plasma facility to realize fusion energy, researching the transport of fast ions is important not only due its close relation heating and current drive efficiencies but also determine heat load on plasma-facing components. We present theoretical analysis orbit simulation for origin lost fast-ions during neutral beam injection (NBI) in Korea Superconducting Tokamak Advanced Research (KSTAR) device. adopted two-dimensional phase diagram momentum magnetic moment describe detectable momentums at fast-ion loss detector (FILD) position as quadratic line. This simple method was used model birth deposited by NBI drawn points space. A Lorentz code calculate orbits prompt characteristics KSTAR NBI. The scrape-off layer deposition produces significant loss, experimental results closely agreed pitch-angle range loss. Our approach can provide wall information from ion
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