Verification of gyrokinetic particle simulation of current-driven instability in fusion plasmas. I. Internal kink mode
- Univ. of California, Irvine, CA (United States)
- Univ. of California, Irvine, CA (United States); Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
- Univ. of California, Irvine, CA (United States); General Atomics, San Diego, CA (United States)
The gyrokinetic toroidal code (GTC) capability has been extended for simulating internal kink instability with kinetic effects in toroidal geometry. The global simulation domain covers the magnetic axis, which is necessary for simulating current-driven instabilities. Here, GTC simulation in the fluid limit of the kink modes in cylindrical geometry is verified by benchmarking with a magnetohydrodynamic eigenvalue code. Gyrokinetic simulations of the kink modes in the toroidal geometry confirum that ion kinetic effects greatly reduce the growth rate even when the banana orbit width is much smaller than the radial width of the perturbed current layer at the mode rational surface.
- Research Organization:
- Univ. of California, Oakland, CA (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); Univ. of California, Irvine, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR). Scientific Discovery through Advanced Computing (SciDAC)
- Grant/Contract Number:
- AC02-05CH11231; AC05-00OR22725; FG02-07ER54916; SC0010416
- OSTI ID:
- 1565335
- Alternate ID(s):
- OSTI ID: 1226643
- Journal Information:
- Physics of Plasmas, Vol. 21, Issue 12; ISSN 1070-664X
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 32 works
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