A zero dimensional study of Ohmically heated negative triangularity tokamaks
Because negative triangularity plasma scenarios remain in L-mode, they do not require external heating systems that exceed the H-mode power threshold. Operating with less heating has the potential to improve performance as heating generally degrades confinement in tokamaks. Using simple zero dimensi...
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Main Authors | , , |
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Format | Journal Article |
Language | English |
Published |
08.07.2024
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Subjects | |
Online Access | Get full text |
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Summary: | Because negative triangularity plasma scenarios remain in L-mode, they do not
require external heating systems that exceed the H-mode power threshold.
Operating with less heating has the potential to improve performance as heating
generally degrades confinement in tokamaks. Using simple zero dimensional power
balance and standard empirical scaling laws for confinement, we analyze the
impact of external heating on several different reactor-relevant devices (i.e.
SPARC, MANTA, ITER and DEMO). We compare the nominal externally heated
scenarios against equivalent negative tringularity cases without external
heating. For most of these devices, the Ohmically heated negative triangularity
versions achieve better performance, particularly for devices with high
magnetic field and/or high fusion gain. |
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DOI: | 10.48550/arxiv.2407.06439 |