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Title: Full- f version of GENE for turbulence in open-field-line systems

Abstract

Exclusive properties of plasmas in the tokamak edge, such as large amplitude fluctuations and plasma–wall interactions in the open-field-line regions, require major modifications of existing gyrokinetic codes originally designed for simulating core turbulence. Thus, the global version of the 3D2V gyrokinetic code GENE, so far employing a δf-splitting technique, is extended to simulate electrostatic turbulence in straight open-field-line systems. The significant extensions are the inclusion of the velocity-space nonlinearity, the development of a conducting-sheath boundary, and the implementation of the Lenard–Bernstein collision operator. With these developments, the code can be run as a full-f code and can handle particle loss to and reflection from the wall. The extended code is applied to modeling turbulence in the Large Plasma Device (LAPD), with a reduced mass ratio and a much lower collisionality. Similar to turbulence in a tokamak scrape-off layer, LAPD turbulence involves collisions, parallel streaming, cross-field turbulent transport with steep profiles, and particle loss at the parallel boundary.

Authors:
 [1]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [4];  [5]
  1. Univ. of California, Los Angeles, CA (United States); Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  2. Max Planck Inst. for Plasma Physics, Garching (Germany)
  3. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  4. Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
  5. Univ. of California, Los Angeles, CA (United States); Max Planck Inst. for Plasma Physics, Garching (Germany)
Publication Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC); Univ. of California, Oakland, CA (United States); Princeton Univ., NJ (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1543849
Alternate Identifier(s):
OSTI ID: 1439757
Grant/Contract Number:  
AC02-05CH11231; AC02-09CH11466
Resource Type:
Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 25; Journal Issue: 6; Journal ID: ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

Pan, Q., Told, D., Shi, E. L., Hammett, G. W., and Jenko, F. Full- f version of GENE for turbulence in open-field-line systems. United States: N. p., 2018. Web. doi:10.1063/1.5008895.
Pan, Q., Told, D., Shi, E. L., Hammett, G. W., & Jenko, F. Full- f version of GENE for turbulence in open-field-line systems. United States. doi:10.1063/1.5008895.
Pan, Q., Told, D., Shi, E. L., Hammett, G. W., and Jenko, F. Thu . "Full- f version of GENE for turbulence in open-field-line systems". United States. doi:10.1063/1.5008895. https://www.osti.gov/servlets/purl/1543849.
@article{osti_1543849,
title = {Full- f version of GENE for turbulence in open-field-line systems},
author = {Pan, Q. and Told, D. and Shi, E. L. and Hammett, G. W. and Jenko, F.},
abstractNote = {Exclusive properties of plasmas in the tokamak edge, such as large amplitude fluctuations and plasma–wall interactions in the open-field-line regions, require major modifications of existing gyrokinetic codes originally designed for simulating core turbulence. Thus, the global version of the 3D2V gyrokinetic code GENE, so far employing a δf-splitting technique, is extended to simulate electrostatic turbulence in straight open-field-line systems. The significant extensions are the inclusion of the velocity-space nonlinearity, the development of a conducting-sheath boundary, and the implementation of the Lenard–Bernstein collision operator. With these developments, the code can be run as a full-f code and can handle particle loss to and reflection from the wall. The extended code is applied to modeling turbulence in the Large Plasma Device (LAPD), with a reduced mass ratio and a much lower collisionality. Similar to turbulence in a tokamak scrape-off layer, LAPD turbulence involves collisions, parallel streaming, cross-field turbulent transport with steep profiles, and particle loss at the parallel boundary.},
doi = {10.1063/1.5008895},
journal = {Physics of Plasmas},
number = 6,
volume = 25,
place = {United States},
year = {2018},
month = {5}
}

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