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ASTRA: Difference between revisions
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The ASTRA suite was adopted to perform interpretative and predictive transport for TJ-II plasmas considering an approximate geometry<ref>D. López-Bruna, F. Castejón, and J. M. Fontdecaba, ''Transporte con Astra en TJ-II,'' Informe Técnico Ciemat 1035, Ciemat, Madrid, Spain, Enero 2004, [https://inis.iaea.org/records/rcnnh-d2398]</ref>. The geometry was improved in collaboration with G. Pereverzev, one of the authors of the ASTRA suite, in order to adapt the non axi-symmetric stellarator geometry<ref>D. López-Bruna, J. A. Romero, and F. Castejón, “Geometría del TJ-II en astra 6.0,” Informe Técnico Ciemat 1086, CIEMAT, Madrid, August 2006., [https://inis.iaea.org/records/xxs57-qjb22]</ref>, which allowed for first estimates of the evolution of the rotational transform according to the net plasma current in the device. A more detailed evolution of the rotational transform, including possible changes of the main metric coefficients depending on the evolution of the plasma pressure has been also programmed in ASTRA<ref>D. López-Bruna, J. M. Reynolds-Barredo, and B. Momo, “Evolution of the rotational transform in TJ-II discharges using the ASTRA code,” Informe Técnico Ciemat 1470, Ciemat, July 2020, [https://servicios.mpr.es/VisorPublicaciones/visordocumentosicopo.aspx?NIPO=83220004X&SUBNIPO=0001&IDPUBLICACION=000183220]</ref>. In this case, internal and driven currents (e. g. bootstrap currents or heating-driven currents) can be included in the calculations. | The ASTRA suite was adopted to perform interpretative and predictive transport for TJ-II plasmas considering an approximate geometry<ref>D. López-Bruna, F. Castejón, and J. M. Fontdecaba, ''Transporte con Astra en TJ-II,'' Informe Técnico Ciemat 1035, Ciemat, Madrid, Spain, Enero 2004, [https://inis.iaea.org/records/rcnnh-d2398]</ref>. The geometry was improved in collaboration with G. Pereverzev, one of the authors of the ASTRA suite, in order to adapt the non axi-symmetric stellarator geometry<ref>D. López-Bruna, J. A. Romero, and F. Castejón, “Geometría del TJ-II en astra 6.0,” Informe Técnico Ciemat 1086, CIEMAT, Madrid, August 2006., [https://inis.iaea.org/records/xxs57-qjb22]</ref>, which allowed for first estimates of the evolution of the rotational transform according to the net plasma current in the device. A more detailed evolution of the rotational transform, including possible changes of the main metric coefficients depending on the evolution of the plasma pressure has been also programmed in ASTRA<ref>D. López-Bruna, J. M. Reynolds-Barredo, and B. Momo, “Evolution of the rotational transform in TJ-II discharges using the ASTRA code,” Informe Técnico Ciemat 1470, Ciemat, July 2020, [https://servicios.mpr.es/VisorPublicaciones/visordocumentosicopo.aspx?NIPO=83220004X&SUBNIPO=0001&IDPUBLICACION=000183220]</ref>. In this case, internal and driven currents (e. g. bootstrap currents or heating-driven currents) can be included in the calculations. | ||
Demanding calculations are conveniently done through system calls from the ASTRA subroutines. One such possible extensions of the ASTRA is the coupling of the calculations to the Montecarlo codes [http://fusionwiki.ciemat.es/wiki/EIRENE Eirene] and Fafner to obtain respectively recycling and [http://fusionwiki.ciemat.es/wiki/TJ-II:Neutral_Beam_Injection neutral beam injection] sources; or the coupling to ray-tracing calculations, including the access to distributed resources<ref>D. López-Bruna, J. M. Reynolds, A. Cappa, J. Martinell, J. García, and C. Gutiérrez-Tapia, “Programas periféricos de ASTRA para el TJ-II,” Informe Técnico Ciemat 1201, CIEMAT, March 2010, [https://documenta.ciemat.es/bitstream/123456789/114/1/40921_IC1201.pdf]</ref> | Demanding calculations are conveniently done through system calls from the ASTRA subroutines. One such possible extensions of the ASTRA is the coupling of the calculations to the Montecarlo codes [http://fusionwiki.ciemat.es/wiki/EIRENE Eirene] and Fafner to obtain respectively recycling and [http://fusionwiki.ciemat.es/wiki/TJ-II:Neutral_Beam_Injection neutral beam injection] sources; or the coupling to ray-tracing calculations, including the access to distributed resources<ref>D. López-Bruna, J. M. Reynolds, A. Cappa, J. Martinell, J. García, and C. Gutiérrez-Tapia, “Programas periféricos de ASTRA para el TJ-II,” Informe Técnico Ciemat 1201, CIEMAT, March 2010, [https://documenta.ciemat.es/bitstream/123456789/114/1/40921_IC1201.pdf]</ref>. | ||