Simulation of neutron emission in neutral beam injection heated plasmas with the real-time code RABBIT
Abstract
In plasmas heated with deuterium beams a deficit of the expected fusion neutron rate is an indicator of the deterioration of the fast-ion confinement, caused, for instance, by magnetohydrodynamic instabilities. The capability of predicting this deficit during the discharge relies on the availability of real-time estimates of the neutron rate from NBI codes which must be fast and accurate at the same time. Therefore, the recently developed real-time RABBIT code for NBI simulations has been extended to output the distribution function and calculate the neutron emission. After the description of this newly installed diagnostics in RABBIT, benchmarks with NUBEAM, a massively used and validated Monte Carlo NBI solver, are discussed on ASDEX-Upgrade and JET cases. A first application for control-room intershot analysis on DIII-D is presented, and the results are compared on a large database with a slower NUBEAM analysis. Further application possibilities, e.g. for real-time control of Alfvén eigenmodes, are outlined.
- Authors:
-
[3];
[3];
[2]
- Max-Planck-Inst. für Plasmaphysik, Garching (Germany)
- General Atomics, San Diego, CA (United States)
- Univ. of California, Irvine, CA (United States). Dept. of Physics and Astronomy
- Publication Date:
- Research Org.:
- General Atomics, San Diego, CA (United States)
- Sponsoring Org.:
- USDOE
- Contributing Org.:
- ASDEX Upgrade; DIII-D team; Eurofusion MST1 team; JET Contributors
- OSTI Identifier:
- 1565956
- Grant/Contract Number:
- FC02-04ER54698
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Nuclear Fusion
- Additional Journal Information:
- Journal Volume: 59; Journal Issue: 8; Journal ID: ISSN 0029-5515
- Publisher:
- IOP Science
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Citation Formats
Weiland, M., Bilato, R., Collins, C. S., Heidbrink, W. W., Liu, D., and Van Zeeland, M. A. Simulation of neutron emission in neutral beam injection heated plasmas with the real-time code RABBIT. United States: N. p., 2019.
Web. doi:10.1088/1741-4326/ab1edd.
Weiland, M., Bilato, R., Collins, C. S., Heidbrink, W. W., Liu, D., & Van Zeeland, M. A. Simulation of neutron emission in neutral beam injection heated plasmas with the real-time code RABBIT. United States. https://doi.org/10.1088/1741-4326/ab1edd
Weiland, M., Bilato, R., Collins, C. S., Heidbrink, W. W., Liu, D., and Van Zeeland, M. A. Tue .
"Simulation of neutron emission in neutral beam injection heated plasmas with the real-time code RABBIT". United States. https://doi.org/10.1088/1741-4326/ab1edd. https://www.osti.gov/servlets/purl/1565956.
@article{osti_1565956,
title = {Simulation of neutron emission in neutral beam injection heated plasmas with the real-time code RABBIT},
author = {Weiland, M. and Bilato, R. and Collins, C. S. and Heidbrink, W. W. and Liu, D. and Van Zeeland, M. A.},
abstractNote = {In plasmas heated with deuterium beams a deficit of the expected fusion neutron rate is an indicator of the deterioration of the fast-ion confinement, caused, for instance, by magnetohydrodynamic instabilities. The capability of predicting this deficit during the discharge relies on the availability of real-time estimates of the neutron rate from NBI codes which must be fast and accurate at the same time. Therefore, the recently developed real-time RABBIT code for NBI simulations has been extended to output the distribution function and calculate the neutron emission. After the description of this newly installed diagnostics in RABBIT, benchmarks with NUBEAM, a massively used and validated Monte Carlo NBI solver, are discussed on ASDEX-Upgrade and JET cases. A first application for control-room intershot analysis on DIII-D is presented, and the results are compared on a large database with a slower NUBEAM analysis. Further application possibilities, e.g. for real-time control of Alfvén eigenmodes, are outlined.},
doi = {10.1088/1741-4326/ab1edd},
journal = {Nuclear Fusion},
number = 8,
volume = 59,
place = {United States},
year = {Tue Jun 18 00:00:00 EDT 2019},
month = {Tue Jun 18 00:00:00 EDT 2019}
}
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