Radiative pulsed L-mode operation in ARC-class reactors
<jats:title>Abstract</jats:title> <jats:p>A new ARC-class, highly-radiative, pulsed, L-mode, burning plasma scenario is developed and evaluated as a candidate for future tokamak reactors. Pulsed inductive operation alleviates the stringent current drive requirements...
| Main Authors: | , , , , , , , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2023
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| Online Access: | https://hdl.handle.net/1721.1/147634 |
| _version_ | 1826209875989889024 |
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| author | Frank, SJ Perks, CJ Nelson, AO Qian, T Jin, S Cavallaro, A Rutkowski, A Reiman, A Freidberg, JP Rodriguez-Fernandez, P Whyte, D |
| author2 | Massachusetts Institute of Technology. Department of Nuclear Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Nuclear Science and Engineering Frank, SJ Perks, CJ Nelson, AO Qian, T Jin, S Cavallaro, A Rutkowski, A Reiman, A Freidberg, JP Rodriguez-Fernandez, P Whyte, D |
| author_sort | Frank, SJ |
| collection | MIT |
| description | <jats:title>Abstract</jats:title>
<jats:p>A new ARC-class, highly-radiative, pulsed, L-mode, burning plasma scenario is developed and evaluated as a candidate for future tokamak reactors. Pulsed inductive operation alleviates the stringent current drive requirements of steady-state reactors, and operation in L-mode affords ELM-free access to <jats:inline-formula>
<jats:tex-math><?CDATA $\sim 90\%$?></jats:tex-math>
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" overflow="scroll">
<mml:mo>∼</mml:mo>
<mml:mn>90</mml:mn>
<mml:mi>%</mml:mi>
</mml:math>
<jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="nfac95acieqn1.gif" xlink:type="simple" />
</jats:inline-formula> core radiation fractions, significantly reducing the divertor power handling requirements. In this configuration the fusion power density can be maximized despite L-mode confinement by utilizing high-field to increase plasma densities and current. This allows us to obtain high gain in robust scenarios in compact devices with <jats:italic>P</jats:italic>
<jats:sub>fus</jats:sub> > 1000 MW despite low confinement. We demonstrate the feasibility of such scenarios here; first by showing that they avoid violating 0D tokamak limits, and then by performing self-consistent integrated simulations of flattop operation including neoclassical and turbulent transport, magnetic equilibrium, and radiofrequency current drive models. Finally we examine the potential effect of introducing negative triangularity with a 0D model. Our results show high-field radiative pulsed L-mode scenarios are a promising alternative to the typical steady state advanced tokamak scenarios which have dominated tokamak reactor development.</jats:p> |
| first_indexed | 2024-09-23T14:33:39Z |
| format | Article |
| id | mit-1721.1/147634 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T14:33:39Z |
| publishDate | 2023 |
| publisher | IOP Publishing |
| record_format | dspace |
| spelling | mit-1721.1/1476342023-01-24T03:13:54Z Radiative pulsed L-mode operation in ARC-class reactors Frank, SJ Perks, CJ Nelson, AO Qian, T Jin, S Cavallaro, A Rutkowski, A Reiman, A Freidberg, JP Rodriguez-Fernandez, P Whyte, D Massachusetts Institute of Technology. Department of Nuclear Science and Engineering <jats:title>Abstract</jats:title> <jats:p>A new ARC-class, highly-radiative, pulsed, L-mode, burning plasma scenario is developed and evaluated as a candidate for future tokamak reactors. Pulsed inductive operation alleviates the stringent current drive requirements of steady-state reactors, and operation in L-mode affords ELM-free access to <jats:inline-formula> <jats:tex-math><?CDATA $\sim 90\%$?></jats:tex-math> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" overflow="scroll"> <mml:mo>∼</mml:mo> <mml:mn>90</mml:mn> <mml:mi>%</mml:mi> </mml:math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="nfac95acieqn1.gif" xlink:type="simple" /> </jats:inline-formula> core radiation fractions, significantly reducing the divertor power handling requirements. In this configuration the fusion power density can be maximized despite L-mode confinement by utilizing high-field to increase plasma densities and current. This allows us to obtain high gain in robust scenarios in compact devices with <jats:italic>P</jats:italic> <jats:sub>fus</jats:sub> > 1000 MW despite low confinement. We demonstrate the feasibility of such scenarios here; first by showing that they avoid violating 0D tokamak limits, and then by performing self-consistent integrated simulations of flattop operation including neoclassical and turbulent transport, magnetic equilibrium, and radiofrequency current drive models. Finally we examine the potential effect of introducing negative triangularity with a 0D model. Our results show high-field radiative pulsed L-mode scenarios are a promising alternative to the typical steady state advanced tokamak scenarios which have dominated tokamak reactor development.</jats:p> 2023-01-23T16:31:29Z 2023-01-23T16:31:29Z 2022 2023-01-23T16:04:09Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/147634 Frank, SJ, Perks, CJ, Nelson, AO, Qian, T, Jin, S et al. 2022. "Radiative pulsed L-mode operation in ARC-class reactors." Nuclear Fusion, 62 (12). en 10.1088/1741-4326/AC95AC Nuclear Fusion Creative Commons Attribution 4.0 International license https://creativecommons.org/licenses/by/4.0/ application/pdf IOP Publishing IOP Publishing |
| spellingShingle | Frank, SJ Perks, CJ Nelson, AO Qian, T Jin, S Cavallaro, A Rutkowski, A Reiman, A Freidberg, JP Rodriguez-Fernandez, P Whyte, D Radiative pulsed L-mode operation in ARC-class reactors |
| title | Radiative pulsed L-mode operation in ARC-class reactors |
| title_full | Radiative pulsed L-mode operation in ARC-class reactors |
| title_fullStr | Radiative pulsed L-mode operation in ARC-class reactors |
| title_full_unstemmed | Radiative pulsed L-mode operation in ARC-class reactors |
| title_short | Radiative pulsed L-mode operation in ARC-class reactors |
| title_sort | radiative pulsed l mode operation in arc class reactors |
| url | https://hdl.handle.net/1721.1/147634 |
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