Fabrice Louche’s personal page

@article{2062,

title = {Status and future development of Heating and Current Drive for the EU DEMO},

author = {M. Q. Tran and P. Agostinetti and G. Aiello and K. Avramidis and B. Baiocchi and M. Barbisan and V. Bobkov and S. Briefi and A. Bruschi and R. Chavan and I. Chelis and Ch. Day and R. Delogu and B. Ell and F. Fanale and A. Fassina and U. Fantz and H. Faugel and L. Figini and D. Fiorucci and R. Friedl and Th. Franke and G. Gantenbein and S. Garavaglia and G. Granucci and S. Hanke and J. -P. Hogge and C. Hopf and A. Kostic and S. Illy and Z. Ioannidis and J. Jelonnek and J. Jin and G. Latsas and F. Louche and V. Maquet and R. Maggiora and A. Messiaen and D. Milanesio and A. Mimo and A. Moro and R. Ochoukov and J. Ongena and I. G. Pagonakis and D. Peponis and A. Pimazzoni and R. Ragona and N. Rispoli and T. Ruess and T. Rzesnicki and T. Scherer and P. Spaeh and G. Starnella and D. Strauss and M. Thumm and W. Tierens and I. Tigelis and C. Tsironis and M. Usoltceva and D. Van Eester and F. Veronese and P. Vincenzi and F. Wagner and C. Wu and F. Zeus and W. Zhang},

url = {https://www.sciencedirect.com/science/article/pii/S0920379622001557},

doi = {https://doi.org/10.1016/j.fusengdes.2022.113159},

issn = {0920-3796},

year  = {2022},

date = {2022-07-01},

journal = {Fusion Engineering and Design},

volume = {180},

pages = {113159},

abstract = {The European DEMO is a pulsed device with pulse length of 2 hours. The functions devoted to the heating and current drive system are: plasma breakdown, plasma ramp-up to the flat-top where fusion reactions occur, the control of the plasma during the flat-top phase, and finally the plasma ramp-down. The EU-DEMO project was in a Pre-Concept Design Phase during 2014-2020, meaning that in some cases, the design values of the device and the precise requirements from the physics point of view were not yet frozen. A total of 130 MW was considered for the all phases of the plasma: in the flat top, 30 MW is required for neoclassical tearing modes (NTM) control, 30 MW for burn control, and 70 MW for the control of thermal instability (TI), without any specific functions requested from each system, Electron Cyclotron (EC), Ion Cyclotron (IC), or Neutral Beam (NB) Injection. At the beginning of 2020, a strategic decision was taken, to consider EC as the baseline for the next phase (in 2021 and beyond). R&D on IC and NB will be risk mitigation measures. In parallel with progresses in Physics modelling, a decision point on the heating strategy will be taken by 2024. This paper describes the status of the R&D development during the period 2014-2020. It assumes that the 3 systems EC, IC and NB will be needed. For integration studies, they are assumed to be implemented at a power level of at least 50 MW. This paper describes in detail the status reached by the EC, IC and NB at the end of 2020. It will be used in the future for further development of the baseline heating method EC, and serves as starting point to further develop IC and NB in areas needed for these systems to be considered for DEMO.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{1999,

title = {The upgraded TOMAS device: A toroidal plasma facility for wall conditioning, plasma production, and plasma–surface interaction studies},

author = {A. Goriaev and T. Wauters and S. Möller and R. Brakel and S. Brezinsek and J. Buermans and K. Crombé and A. Dinklage and R. Habrichs and D. Höschen and M. Krause and Yu. Kovtun and D. Lopez-Rodriguez and F. Louche and S. Moon and D. Nicolai and J. Thomas and R. Ragona and M. Rubel and T. Rüttgers and P. Petersson and P. Brunsell and Ch. Linsmeier and M. Van Schoor},

year  = {2021},

date = {2021-02-01},

journal = {Review of Scientific Instruments},

volume = {92},

number = {2},

pages = {023506},

abstract = {The Toroidal Magnetized System device has been significantly upgraded to enable development of various wall conditioning techniques, including methods based on ion and electron cyclotron (IC/EC) range of frequency plasmas, and to complement plasma–wall interaction research in tokamaks and stellarators. The toroidal magnetic field generated by 16 coils can reach its maximum of 125 mT on the toroidal axis. The EC system is operated at 2.45 GHz with up to 6 kW forward power. The IC system can couple up to 6 kW in the frequency range of 10 MHz–50 MHz. The direct current glow discharge system is based on a graphite anode with a maximum voltage of 1.5 kV and a current of 6 A. A load-lock system with a vertical manipulator allows exposure of material samples. A number of diagnostics have been installed: single- and triple-pin Langmuir probes for radial plasma profiles, a time-of-flight neutral particle analyzer capable of detecting neutrals in the energy range of 10 eV–1000 eV, and a quadrupole mass spectrometer and video systems for plasma imaging. The majority of systems and diagnostics are controlled by the Siemens SIMATIC S7 system, which also provides safety interlocks.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{1987,

title = {Further studies on the ITER ICRF antenna grounding},

author = {P. Dumortier and F. Durodié and F. Louche and M. Vervier and A Kv á and A. Messiaen and I. Stepanov},

year  = {2020},

date = {2020-09-01},

journal = {AIP Conference proceedings},

volume = {2254},

number = {1},

pages = {070013},

abstract = {The ITER ICRF antenna is a port-plug antenna. There is a clearance gap surrounding the antenna between the antenna plug walls and the vacuum vessel, creating a cavity in which resonant modes can be excited. The frequency response of the antenna array is perturbed by the excitation of a TE0,1 (p=1) mode in the ITER frequency band (around 45MHz) in the clearance gap in absence of any additional grounding. Different grounding options have been proposed and both numerically studied and tested on a scaled low-power mock-up of the ITER antenna. These studies however did not take the Faraday screen into account. In view of the technical difficulties to implement the proposed grounding options the present contribution revisits the need for grounding based on new gap voltage measurements on a reduced- scale mock-up of the ITER ICRH antenna and numerical modeling, including the presence of the Faraday screen.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{1986,

title = {Three-dimensional RF and circuit modelling of the revised ITER ICRF launcher design},

author = {F. Louche and F. Durodié and W Helou and P. U. Lamalle and F Calarco},

year  = {2020},

date = {2020-09-01},

journal = {AIP Conference proceedings},

volume = {2254},

number = {1},

pages = {070008},

abstract = {The ITER Ion Cyclotron Heating and Current Drive antenna design has undergone significant improvements driven by mechanical considerations. We present a series of numerical assessments of the RF properties of the resulting new architecture. Various designs aiming at using the service stub as a mechanical support were analysed and compared to the performance of the 2012 Preliminary Design Review (PDR) version taken as reference resulting in the selection of the ''internal service T-stub'' design. CST MWS/Ansys HFSS 3D models of the sub-components of the antenna were developed and simulated, and the resulting scattering matrices were integrated into transmission line (TL) models to evaluate RF coupling properties and RF power losses on the conductors. The results are compared with the 2012 performances and the differences are discussed. Also, 3D RF fields maps are produced and areas of improvement are identified.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{1826,

title = {Design of an ICRF system for plasma-wall interactions and RF plasma production studies on TOMAS},

author = {F. Louche and T. Wauters and R. Ragona and F. Durodié and A. I. Lyssoivan and A. Messiaen and J. Ongena and M. Van Schoor},

url = {http://www.sciencedirect.com/science/article/pii/S0920379617305264},

doi = {https://doi.org/10.1016/j.fusengdes.2017.04.123},

issn = {0920-3796},

year  = {2017},

date = {2017-11-01},

journal = {Fusion Engineering and Design},

volume = {123},

pages = {317 - 320},

note = {Proceedings of the 29th Symposium on Fusion Technology (SOFT-29) Prague, Czech Republic, September 5-9, 2016},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{1825,

title = {Development of an ICRH antenna system at W7-X for plasma heating and wall conditioning},

author = {B Schweer and J. Ongena and F. Durodié and A. Krivska and F. Louche and A. Messiaen and M. Van Schoor and M. Vervier},

url = {http://www.sciencedirect.com/science/article/pii/S0920379617305641},

doi = {https://doi.org/10.1016/j.fusengdes.2017.05.019},

issn = {0920-3796},

year  = {2017},

date = {2017-11-01},

journal = {Fusion Engineering and Design},

volume = {123},

pages = {303 - 308},

note = {Proceedings of the 29th Symposium on Fusion Technology (SOFT-29) Prague, Czech Republic, September 5-9, 2016},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{1762,

title = {Contribution of LPP/ERM-KMS to the modern developments of ICRH antenna systems},

author = {A. Messiaen and J. Ongena and P. Dumortier and F. Durodié and F. Louche and R. Ragona and M. Vervier},

url = {http://dx.doi.org/10.1016/j.fusengdes.2016.06.035},

doi = {10.1016/j.fusengdes.2016.06.035},

issn = {09203796},

year  = {2016},

date = {2016-11-01},

journal = {Fusion Engineering and Design},

volume = {112},

pages = {21-35},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{1700,

title = {Studies of RF sheaths and diagnostics on IShTAR},

author = {K. Crombé and S Devaux and R D'Inca and E Faudot and H Faugel and H Fünfgelder and S Heuraux and J Jacquot and F. Louche and J Moritz and R Ochoukov and M. Tripsky and D. Van Eester and T. Wauters and J. -M. Noterdaeme},

url = {http://dx.doi.org/10.1063/1.4936471},

doi = {10.1063/1.4936471},

issn = {0094-243X},

year  = {2015},

date = {2015-12-10},

journal = {AIP Conference Proceedings},

volume = {1689},

number = {1},

pages = {030006+},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{1709,

title = {First experimental results on the IShTAR testbed},

author = {R D'Inca and J Jacquot and R Ochoukov and I Morgal and K. Crombé and F. Louche and D. Van Eester and S Heuraux and S Devaux and J Moritz and E Faudot and H Fünfgelder and H Faugel and J. -M. Noterdaeme},

url = {http://dx.doi.org/10.1063/1.4936498},

doi = {10.1063/1.4936498},

issn = {0094-243X},

year  = {2015},

date = {2015-12-10},

journal = {AIP Conference Proceedings},

volume = {1689},

number = {1},

pages = {050010+},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{1720,

title = {Designing the IShTAR antenna: Physics and engineering aspects},

author = {F. Louche and J Jacquot and K. Crombé and D. Van Eester and R D'Inca and S Devaux and E Faudot and H Faugel and H Fünfgelder and S Heuraux and I Morgal and J Moritz and R Ochoukov and J. -M. Noterdaeme},

url = {http://dx.doi.org/10.1063/1.4936523},

doi = {10.1063/1.4936523},

issn = {0094-243X},

year  = {2015},

date = {2015-12-10},

journal = {AIP Conference Proceedings},

volume = {1689},

number = {1},

pages = {070016+},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{1712,

title = {Monte Carlo simulation of ICRF discharge initiation in ITER},

author = {M. Tripsky and T. Wauters and A. I. Lyssoivan and A. Křivská and F. Louche and M. Van Schoor and J. -M. Noterdaeme},

url = {http://dx.doi.org/10.1063/1.4936507},

doi = {10.1063/1.4936507},

issn = {0094-243X},

year  = {2015},

date = {2015-12-10},

journal = {AIP Conference Proceedings},

volume = {1689},

number = {1},

pages = {060009+},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{1689,

title = {Validation of the electrical design of the W7-X ICRF antenna on a reduced-scale mock-up},

author = {P. Dumortier and A. Křivská and A. Messiaen and M. Vervier and F. Louche and J. Ongena},

url = {http://dx.doi.org/10.1016/j.fusengdes.2015.02.022},

doi = {10.1016/j.fusengdes.2015.02.022},

issn = {09203796},

year  = {2015},

date = {2015-10-01},

journal = {Fusion Engineering and Design},

volume = {96-97},

pages = {463-467},

abstract = {The electrical design of the W7X ICRF antenna is validated on a reduced-scale mock-up. High dieletric constant materials are needed for the dummy load to mimic the plasma load. Salted water and a mix of ferroelectric BaTiO3 and salted water are used as loads. A comparison is made between experimental measurements and numerical simulations by 3 codes: Antiter II, CST MWS and Topica. The best agreement is obtained with the BaTiO3 mix load for all phasings. The dependence of the coupled power estimate on the dielectric load properties is given. A scaled mock-up (1/4) of the proposed W7-X ICRF antenna has been constructed and placed in front of dielectric dummy loads. It allows comparing measured and predicted coupling performances and hence validating the electrical design of the antenna. High dielectric constant materials are needed for the dummy load to mimic the plasma. Salted water and a mix of the ferroelectric BaTiO3 and salted water are used. The measurements are compared with the expectations of 3 codes: ANTITER II, MWS and TOPICA. The best agreement is obtained with the BaTiO3 load for all phasings.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}