Runaway electron dynamics in ITER disruptions with shattered pellet injections
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| Názov: | Runaway electron dynamics in ITER disruptions with shattered pellet injections |
|---|---|
| Autori: | Vallhagen, Oskar, 1997, Hanebring, Lise, 2001, Artola, F. J., Lehnen, M, Nardon, E, Fülöp, Tünde-Maria, 1970, Hoppe, Matthias, Newton, Sarah, 1981, Pusztai, Istvan, 1983 |
| Zdroj: | Implementation of activities described in the Roadmap to Fusion during Horizon Europe through a joint programme of the members of the EUROfusion consortium Skenande elektroner i fusionsplasmor Extrema plasmautbrott Datadrivna optimala modeller för kinetiska dynamor Nuclear Fusion. 64(8) |
| Predmety: | ITER, plasma simulation, disruption mitigation, shattered pellet injection, runaway electron |
| Popis: | This study systematically explores the parameter space of disruption mitigation through shattered pellet injection in ITER with a focus on runaway electron (RE) dynamics, using the disruption modeling tool Dream. The physics fidelity is considerably increased compared to previous studies, by e.g. using realistic magnetic geometry, resistive wall configuration, thermal quench onset criteria, as well as including additional effects, such as ion transport and enhanced RE transport during the thermal quench. The work aims to provide a fairly comprehensive coverage of experimentally feasible scenarios, considering plasmas representative of both non-activated and high-performance DT operation, different thermal quench onset criteria and transport levels, a wide range of hydrogen and neon quantities injected in one or two stages, and pellets with various characteristic shard sizes. Using a staggered injection scheme, with a pure hydrogen injection preceding a mixed hydrogen-neon injection, we find injection parameters leading to acceptable RE currents in all investigated discharges without activated runaway sources. Dividing the injection into two stages is found to significantly enhance the assimilation and minimize RE generation due to the hot-tail mechanism. However, while a staggered injection outperforms a single stage injection also in cases with radioactive RE sources, no cases with acceptable RE currents are found for a DT-plasma with a 15 MA plasma current. |
| Popis súboru: | electronic |
| Prístupová URL adresa: | https://research.chalmers.se/publication/541920 https://research.chalmers.se/publication/544123 https://research.chalmers.se/publication/541781 https://research.chalmers.se/publication/544123/file/544123_Fulltext.pdf |
| Databáza: | SwePub |
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| Items | – Name: Title Label: Title Group: Ti Data: Runaway electron dynamics in ITER disruptions with shattered pellet injections – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Vallhagen%2C+Oskar%22">Vallhagen, Oskar</searchLink>, 1997<br /><searchLink fieldCode="AR" term="%22Hanebring%2C+Lise%22">Hanebring, Lise</searchLink>, 2001<br /><searchLink fieldCode="AR" term="%22Artola%2C+F%2E+J%2E%22">Artola, F. J.</searchLink><br /><searchLink fieldCode="AR" term="%22Lehnen%2C+M%22">Lehnen, M</searchLink><br /><searchLink fieldCode="AR" term="%22Nardon%2C+E%22">Nardon, E</searchLink><br /><searchLink fieldCode="AR" term="%22Fülöp%2C+Tünde-Maria%22">Fülöp, Tünde-Maria</searchLink>, 1970<br /><searchLink fieldCode="AR" term="%22Hoppe%2C+Matthias%22">Hoppe, Matthias</searchLink><br /><searchLink fieldCode="AR" term="%22Newton%2C+Sarah%22">Newton, Sarah</searchLink>, 1981<br /><searchLink fieldCode="AR" term="%22Pusztai%2C+Istvan%22">Pusztai, Istvan</searchLink>, 1983 – Name: TitleSource Label: Source Group: Src Data: <i>Implementation of activities described in the Roadmap to Fusion during Horizon Europe through a joint programme of the members of the EUROfusion consortium Skenande elektroner i fusionsplasmor Extrema plasmautbrott Datadrivna optimala modeller för kinetiska dynamor Nuclear Fusion</i>. 64(8) – Name: Subject Label: Subject Terms Group: Su Data: <searchLink fieldCode="DE" term="%22ITER%22">ITER</searchLink><br /><searchLink fieldCode="DE" term="%22plasma+simulation%22">plasma simulation</searchLink><br /><searchLink fieldCode="DE" term="%22disruption+mitigation%22">disruption mitigation</searchLink><br /><searchLink fieldCode="DE" term="%22shattered+pellet+injection%22">shattered pellet injection</searchLink><br /><searchLink fieldCode="DE" term="%22runaway+electron%22">runaway electron</searchLink> – Name: Abstract Label: Description Group: Ab Data: This study systematically explores the parameter space of disruption mitigation through shattered pellet injection in ITER with a focus on runaway electron (RE) dynamics, using the disruption modeling tool Dream. The physics fidelity is considerably increased compared to previous studies, by e.g. using realistic magnetic geometry, resistive wall configuration, thermal quench onset criteria, as well as including additional effects, such as ion transport and enhanced RE transport during the thermal quench. The work aims to provide a fairly comprehensive coverage of experimentally feasible scenarios, considering plasmas representative of both non-activated and high-performance DT operation, different thermal quench onset criteria and transport levels, a wide range of hydrogen and neon quantities injected in one or two stages, and pellets with various characteristic shard sizes. Using a staggered injection scheme, with a pure hydrogen injection preceding a mixed hydrogen-neon injection, we find injection parameters leading to acceptable RE currents in all investigated discharges without activated runaway sources. Dividing the injection into two stages is found to significantly enhance the assimilation and minimize RE generation due to the hot-tail mechanism. However, while a staggered injection outperforms a single stage injection also in cases with radioactive RE sources, no cases with acceptable RE currents are found for a DT-plasma with a 15 MA plasma current. – Name: Format Label: File Description Group: SrcInfo Data: electronic – Name: URL Label: Access URL Group: URL Data: <link linkTarget="URL" linkTerm="https://research.chalmers.se/publication/541920" linkWindow="_blank">https://research.chalmers.se/publication/541920</link><br /><link linkTarget="URL" linkTerm="https://research.chalmers.se/publication/544123" linkWindow="_blank">https://research.chalmers.se/publication/544123</link><br /><link linkTarget="URL" linkTerm="https://research.chalmers.se/publication/541781" linkWindow="_blank">https://research.chalmers.se/publication/541781</link><br /><link linkTarget="URL" linkTerm="https://research.chalmers.se/publication/544123/file/544123_Fulltext.pdf" linkWindow="_blank">https://research.chalmers.se/publication/544123/file/544123_Fulltext.pdf</link> |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1088/1741-4326/ad54d7 Languages: – Text: English Subjects: – SubjectFull: ITER Type: general – SubjectFull: plasma simulation Type: general – SubjectFull: disruption mitigation Type: general – SubjectFull: shattered pellet injection Type: general – SubjectFull: runaway electron Type: general Titles: – TitleFull: Runaway electron dynamics in ITER disruptions with shattered pellet injections Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Vallhagen, Oskar – PersonEntity: Name: NameFull: Hanebring, Lise – PersonEntity: Name: NameFull: Artola, F. J. – PersonEntity: Name: NameFull: Lehnen, M – PersonEntity: Name: NameFull: Nardon, E – PersonEntity: Name: NameFull: Fülöp, Tünde-Maria – PersonEntity: Name: NameFull: Hoppe, Matthias – PersonEntity: Name: NameFull: Newton, Sarah – PersonEntity: Name: NameFull: Pusztai, Istvan IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 01 Type: published Y: 2024 Identifiers: – Type: issn-print Value: 00295515 – Type: issn-print Value: 17414326 – Type: issn-locals Value: SWEPUB_FREE – Type: issn-locals Value: CTH_SWEPUB Numbering: – Type: volume Value: 64 – Type: issue Value: 8 Titles: – TitleFull: Implementation of activities described in the Roadmap to Fusion during Horizon Europe through a joint programme of the members of the EUROfusion consortium Skenande elektroner i fusionsplasmor Extrema plasmautbrott Datadrivna optimala modeller för kinetiska dynamor Nuclear Fusion Type: main |
| ResultId | 1 |