{"dcterms:modified":"2025-04-02","dcterms:creator":"Harvard Dataverse","@type":"ore:ResourceMap","schema:additionalType":"Dataverse OREMap Format v1.0.1","dvcore:generatedBy":{"@type":"schema:SoftwareApplication","schema:name":"Dataverse","schema:version":"6.6 build 1829-192cdc4","schema:url":"https://github.com/iqss/dataverse"},"@id":"https://dataverse.harvard.edu/api/datasets/export?exporter=OAI_ORE&persistentId=https://doi.org/10.7910/DVN/NMVUFS","ore:describes":{"citation:keyword":[{"citation:keywordValue":"ARC"},{"citation:keywordValue":"detached"},{"citation:keywordValue":"divertor"},{"citation:keywordValue":"modelling"},{"citation:keywordValue":"power handling"},{"citation:keywordValue":"UEDGE"}],"author":{"citation:authorName":"Michael Robert Knox Wigram, Brian LaBombard, Maxim V. Umansky, Adam Q Kuang, Theodore Golfinopoulos, Jim L. Terry, Daniel Brunner, Marvin E. Rensink, Christopher P. Ridgers, Dennis G. Whyte"},"citation:datasetContact":{"citation:datasetContactEmail":"wigram@psfc.mit.edu"},"citation:dsDescription":{"citation:dsDescriptionValue":"Extremely intense power exhaust channels are projected for tokamak-based fusion power reactors; a means to handle them remains to be demonstrated. Advanced divertor configurations have been proposed as potential solutions. Recent modelling of tightly baffled, long-legged divertor geometries for the divertor test tokamak concept, ADX, has shown that these concepts may access passively stable, fully detached regimes over a broad range of parameters. The question remains as to how such divertors may perform in a reactor setting. To explore this, numerical simulations are performed with UEDGE for the long-legged divertor geometry proposed for the ARC pilot plant conceptual design - a device with projected heat flux power width (λq||) of 0.4 mm and power exhaust of 93 MW - first for a simplified Super-X divertor configuration (SXD) and then for the actual X-point target divertor (XPTD) being proposed. It is found that the SXD, combined with 0.5% fixed-fraction neon impurity concentration, can produce passively stable, detached divertor regimes for power exhausts in the range of 80-108 MW - fully accommodating ARC's power exhaust. The XPTD configuration is found to reduce the strike-point temperature by a factor of ~10 compared to the SXD for small separations (~1.4λq||) between main and divertor X-point magnetic flux surfaces. Even greater potential reductions are identified for reducing separations to ~1λq|| or less. The power handling response is found to be insensitive to the level of cross-field convective or diffusive transport assumed in the divertor leg. By raising the separatrix density by a factor of 1.5, stable fully detached divertor solutions are obtained that fully accommodate the ARC exhaust power without impurity seeding. To our knowledge, this is the first time an impurity-free divertor power handling scenario has been obtained in edge modelling for a tokamak fusion power reactor with λq|| of 0.4 mm."},"citation:notesText":"<a href=\"http://library.psfc.mit.edu/catalog/reports/2010/19ja/19ja020/abstract.php\">PSFC REPORT PSFC/JA-19-20</a><br /><br />This work has been supported by the University of York, Massachusetts Institute of Technology (supported by US DoE cooperative agreement DE-SC0014264), Lawrence Livermore National Laboratory (supported under DoE Contract DE-AC52-07NA27344) and the UK Engineering and Physical Science Research Council (EPSRC) as part of the EPSRC Fusion Centre for Doctoral Training programme (under Training Grant Number EP/LO1663X/1).","subject":"Physics","title":"Performance assessment of long-legged tightly-baffled divertor geometries in the ARC reactor concept","@id":"https://doi.org/10.7910/DVN/NMVUFS","@type":["ore:Aggregation","schema:Dataset"],"schema:version":"1.0","schema:name":"Performance assessment of long-legged tightly-baffled divertor geometries in the ARC reactor concept","schema:dateModified":"Wed Jun 03 18:14:05 UTC 2020","schema:datePublished":"2020-06-03","schema:creativeWorkStatus":"RELEASED","dvcore:termsOfUse":"This dataset is made available without information on how it can be used. You should communicate with the Contact(s) specified before use.","dvcore:fileTermsOfAccess":{"dvcore:fileRequestAccess":false},"schema:includedInDataCatalog":"Harvard Dataverse","schema:isPartOf":{"schema:name":"Plasma Science and Fusion Center Dataverse","@id":"https://dataverse.harvard.edu/dataverse/MIT-PSFC","schema:description":"This archive contains all pre-print manuscript versions prior to actual publication in peer-reviewed journals, with associated data sets.   This collection also includes contributions to conferences.  ","schema:isPartOf":{"schema:name":"Harvard Dataverse","@id":"https://dataverse.harvard.edu/dataverse/harvard","schema:description":"<span><span><span><h3>Share, archive, and get credit for your data. Find and cite data across all research fields.</h3></span></span></span>"}},"ore:aggregates":[{"schema:description":"","schema:name":"19ja020_archival_manuscript.pdf","dvcore:restricted":false,"schema:version":1,"dvcore:datasetVersionId":196691,"@id":"doi:10.7910/DVN/NMVUFS/MF8VBM","schema:sameAs":"https://dataverse.harvard.edu/api/access/datafile/:persistentId?persistentId=doi:10.7910/DVN/NMVUFS/MF8VBM","@type":"ore:AggregatedResource","schema:fileFormat":"application/pdf","dvcore:filesize":6289757,"dvcore:storageIdentifier":"s3://dvn-cloud:1727c3e9b4f-a0c0fdbf7689","dvcore:rootDataFileId":-1,"dvcore:checksum":{"@type":"MD5","@value":"892c2e9895e64ddad8bdab671d230cab"}}],"schema:hasPart":["doi:10.7910/DVN/NMVUFS/MF8VBM"]},"@context":{"author":"http://purl.org/dc/terms/creator","citation":"https://dataverse.org/schema/citation/","dcterms":"http://purl.org/dc/terms/","dvcore":"https://dataverse.org/schema/core#","ore":"http://www.openarchives.org/ore/terms/","schema":"http://schema.org/","subject":"http://purl.org/dc/terms/subject","title":"http://purl.org/dc/terms/title"}}