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Fusion"],"published-print":{"date-parts":[[2021,9,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>Sustained operation of high-performance, ITER-baseline scenario plasmas at the high levels of input power (<jats:inline-formula>\n                     <jats:tex-math\/>\n                     <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" overflow=\"scroll\">\n                        <mml:mrow>\n                           <mml:mo>\u2272<\/mml:mo>\n                        <\/mml:mrow>\n                        <mml:mn>40<\/mml:mn>\n                        <mml:mrow>\n                           <mml:mtext>MW<\/mml:mtext>\n                        <\/mml:mrow>\n                     <\/mml:math>\n                     <jats:inline-graphic xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" xlink:href=\"ppcfac1567ieqn1.gif\" xlink:type=\"simple\"\/>\n                  <\/jats:inline-formula>) required to achieve \u223c15\u2009MW of D-T fusion power in JET-ILW requires careful optimisation of the fuelling to avoid an unacceptable disruption rate due to excessive radiation, primarily from W impurities, which are sputtered by edge-localised modes (ELMs) from the divertor targets. By using a train of ELM-pacing pellets from a high-frequency pellet injector to promote regular ELMs, which flush W and other impurities from the confined plasma, such high-performance plasmas can be sustained (for \u223c5\u2009s) while maintaining a high normalised confinement factor <jats:italic>H<\/jats:italic>\n                  <jats:sub>98,<jats:italic>y<\/jats:italic>2<\/jats:sub>\u2009\u223c\u20091, which would otherwise be degraded by reducing the pedestal confinement if a higher rate of D<jats:sub>2<\/jats:sub> gas fuelling were used instead of the pellets to mitigate the W contamination. The causes underlying the improved performance and energy confinement obtained using this combined, gas and pellet fuelling scheme is investigated here in some detail.<\/jats:p>","DOI":"10.1088\/1361-6587\/ac1567","type":"journal-article","created":{"date-parts":[[2021,7,16]],"date-time":"2021-07-16T22:27:27Z","timestamp":1626474447000},"page":"095013","update-policy":"https:\/\/doi.org\/10.1088\/crossmark-policy","source":"Crossref","is-referenced-by-count":25,"title":["The impact of fuelling and W radiation on the performance of high-power, ITER-baseline scenario plasmas in JET-ILW"],"prefix":"10.1088","volume":"63","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0671-9668","authenticated-orcid":false,"given":"A R","family":"Field","sequence":"first","affiliation":[]},{"given":"S","family":"Aleiferis","sequence":"additional","affiliation":[]},{"given":"\u00c9","family":"Belonohy","sequence":"additional","affiliation":[]},{"given":"P","family":"Carvalho","sequence":"additional","affiliation":[]},{"given":"I","family":"Coffey","sequence":"additional","affiliation":[]},{"given":"D","family":"Frigione","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3796-9814","authenticated-orcid":false,"given":"L","family":"Garzotti","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5692-6772","authenticated-orcid":false,"given":"L","family":"Horvath","sequence":"additional","affiliation":[]},{"given":"Hyun-Tae","family":"Kim","sequence":"additional","affiliation":[]},{"given":"M","family":"Lennholm","sequence":"additional","affiliation":[]},{"given":"E","family":"Lerche","sequence":"additional","affiliation":[]},{"given":"P","family":"Lomas","sequence":"additional","affiliation":[]},{"given":"C G","family":"Lowry","sequence":"additional","affiliation":[]},{"given":"J","family":"Mailloux","sequence":"additional","affiliation":[]},{"given":"F","family":"Rimini","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5856-0287","authenticated-orcid":false,"given":"C M","family":"Roach","sequence":"additional","affiliation":[]},{"given":"M","family":"Sertoli","sequence":"additional","affiliation":[]},{"given":"\u017d","family":"\u0160tancar","sequence":"additional","affiliation":[]},{"given":"G","family":"Szepesi","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4284-3992","authenticated-orcid":false,"given":"D","family":"van Eester","sequence":"additional","affiliation":[]}],"member":"266","published-online":{"date-parts":[[2021,8,11]]},"reference":[{"key":"ppcfac1567bib1","doi-asserted-by":"publisher","DOI":"10.1088\/1741-4326\/ab1cca","volume":"59","author":"Garzotti","year":"2019","journal-title":"Nucl. 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