@article{MTMT:34605080, title = {Commissioning of the imaging neutral particle analyser for the ASDEX Upgrade tokamak}, url = {https://m2.mtmt.hu/api/publication/34605080}, author = {Rueda-Rueda, J. and Garcia-Munoz, M. and Viezzer, E. and Schneider, P.A. and Garcia-Dominguez, J. and Oyola, P. and Galdon-Quiroga, J. and Hidalgo-Salaverri, J. and Du, X. and Van, Zeeland M.A. and Videla-Trevin, M. and van, Vuuren A.J.}, doi = {10.1088/1361-6587/ad1ec1}, journal-iso = {PLASMA PHYS CONTR F}, journal = {PLASMA PHYSICS AND CONTROLLED FUSION}, volume = {66}, unique-id = {34605080}, issn = {0741-3335}, year = {2024}, eissn = {1361-6587} } @article{MTMT:34304182, title = {Active Control of Alfvén Eigenmodes by Externally Applied 3D Magnetic Perturbations}, url = {https://m2.mtmt.hu/api/publication/34304182}, author = {Gonzalez-Martin, J. and Garcia-Munoz, M. and Galdon-Quiroga, J. and Todo, Y. and Dominguez-Palacios, J. and Dunne, M. and Van, Vuuren A.J. and Liu, Y.Q. and Sanchis, L. and Spong, D. and Suttrop, W. and Wang, X. and Willensdorfer, M.}, doi = {10.1103/PhysRevLett.130.035101}, journal-iso = {PHYS REV LETT}, journal = {PHYSICAL REVIEW LETTERS}, volume = {130}, unique-id = {34304182}, issn = {0031-9007}, year = {2023}, eissn = {1079-7114} } @article{MTMT:33851430, title = {First measurements of a scintillator-based fast-ion loss detector in reversed Ip/Bt at the ASDEX Upgrade tokamak}, url = {https://m2.mtmt.hu/api/publication/33851430}, author = {Hidalgo-Salaverri, J. and Rueda-Rueda, J. and Galdon-Quiroga, J. and Cano-Megias, P. and Viezzer, E. and Garcia-Dominguez, J. and Silvagni, D. and Videla-Trevin, M. and Oyola, P. and Ayllon-Guerola, J. and Garcia-Munoz, M. and Happel, T.}, doi = {10.1016/j.fusengdes.2023.113661}, journal-iso = {FUSION ENG DES}, journal = {FUSION ENGINEERING AND DESIGN}, volume = {193}, unique-id = {33851430}, issn = {0920-3796}, year = {2023}, eissn = {1873-7196} } @article{MTMT:33698572, title = {Radio-frequency measurements of energetic-electron-driven emissions using high-frequency magnetic probe on XuanLong-50 spherical torus}, url = {https://m2.mtmt.hu/api/publication/33698572}, author = {Wang, M. and Lun, X. and Bo, X. and Liu, B. and Liu, A. and Shi, Y.}, doi = {10.1088/2058-6272/aca373}, journal-iso = {PLASMA SCI TECHNOL}, journal = {PLASMA SCIENCE AND TECHNOLOGY}, volume = {25}, unique-id = {33698572}, issn = {1009-0630}, year = {2023}, eissn = {2058-6272} } @article{MTMT:33981983, title = {Recent progress in the interaction between energetic particles and tearing modes}, url = {https://m2.mtmt.hu/api/publication/33981983}, author = {Cai, Huishan and Li, Ding}, doi = {10.1093/nsr/nwac019}, journal-iso = {NATL SCI REV}, journal = {NATIONAL SCIENCE REVIEW}, volume = {9}, unique-id = {33981983}, issn = {2095-5138}, abstract = {One of the critical physics problems in magnetically confined fusion plasma, that the interaction between energetic particles and tearing modes, is reviewed based on theory, simulation and experiment.The dynamics of energetic particles and tearing modes and the interactions between them are of great significance for magnetically confined fusion plasmas. In this review, we focus on these issues in the context of tokamak plasmas. The interaction between energetic particles and tearing modes is considered from two perspectives: (i) the influence of energetic particles on tearing modes and (ii) the transport of energetic particles by tearing modes. The influence of energetic particles on tearing modes is described on the basis of a general dispersion relation for tearing modes. The effects of energetic particles are considered separately in the outer region and the island region of a tearing mode. The physics mainly results from the modification of the perturbed parallel current by energetic particles without wave-particle resonance. In addition, the resonance between energetic particles and tearing modes is also reviewed. For the transport of energetic particles, transport of both circulating and trapped energetic particles by tearing mode is reviewed. Our descriptions of physical phenomena here are based on an analytical approach, while the experiments and simulations are used to illustrate and confirm our results. Finally, a number of open issues are discussed.}, keywords = {TRANSPORT; Confinement; tokamak; magnetically confined plasma; tearing mode; energetic particle}, year = {2022}, eissn = {2053-714X} } @article{MTMT:32831376, title = {Thermo-mechanical limits of a magnetically driven fast-ion loss detector in the ASDEX Upgrade tokamak}, url = {https://m2.mtmt.hu/api/publication/32831376}, author = {Hidalgo-Salaverri, J and Gonzalez-Martin, J and Ayllon-Guerola, J and Garcia-Munoz, M and Sieglin, B and Galdon-Quiroga, J and Silvagni, D and Viezzer, E and Rueda-Rueda, J and Lunt, T and Herrmann, A}, doi = {10.1088/1748-0221/17/02/C02020}, journal-iso = {J INSTRUM}, journal = {JOURNAL OF INSTRUMENTATION}, volume = {17}, unique-id = {32831376}, issn = {1748-0221}, year = {2022}, eissn = {1748-0221} } @article{MTMT:32352879, title = {Torque to counter-current direction driving low frequency tearing modes in JT-60U}, url = {https://m2.mtmt.hu/api/publication/32352879}, author = {Bando, T. and Honda, M. and Inoue, S. and Yoshida, M. and Matsunaga, G. and Isayama, A. and Takechi, M. and Shinohara, K. and Sumida, S.}, doi = {10.1088/1361-6587/ac11b7}, journal-iso = {PLASMA PHYS CONTR F}, journal = {PLASMA PHYSICS AND CONTROLLED FUSION}, volume = {63}, unique-id = {32352879}, issn = {0741-3335}, abstract = {In the JT-60U tokamak, low frequency modes (LFMs) have been reported recently when the m/n = 2/1 neoclassical tearing mode grows sufficiently. LFMs show the low mode frequencies (<20 Hz) with the rotation direction to the counter-current direction (ctr-direction) toroidally, even if strong injection power to the co-current direction (co-direction) is applied by tangential neutral beam injections. As a candidate to drive the rotation to the ctr-direction, the neoclassical toroidal viscosity (NTV) torque is investigated in this study. Indeed, when a LFM is observed, the estimated 'offset velocity' of the NTV torque is larger than the observed toroidal velocity around the q = 2 surface and results in the torque to the ctr-direction (ctr-torque). The torque balance between the NTV torque and the torque induced by the eddy current on the resistive wall is investigated. It is found that the rotation to the ctr-direction having the low mode frequency is obtained as the result of the ctr-torque to the offset velocity. Our investigation suggests the requirement to include the NTV torque in the modeling on the mode locking of neoclassical tearing modes in tokamaks.}, keywords = {tokamak; Mode locking; tearing mode; neoclassical toroidal viscosity; JT-60U}, year = {2021}, eissn = {1361-6587} } @article{MTMT:32002962, title = {Upgrades to the ion cyclotron emission diagnostic on the DIII-D tokamak}, url = {https://m2.mtmt.hu/api/publication/32002962}, author = {DeGrandchamp, GH and Thome, KE and Heidbrink, WW and Holmes, I and Pinsker, RI}, doi = {10.1063/5.0040597}, journal-iso = {REV SCI INSTRUM}, journal = {REVIEW OF SCIENTIFIC INSTRUMENTS}, volume = {92}, unique-id = {32002962}, issn = {0034-6748}, year = {2021}, eissn = {1089-7623} } @article{MTMT:32180906, title = {Upgrade and absolute calibration of the JET scintillator-based fast-ion loss detector}, url = {https://m2.mtmt.hu/api/publication/32180906}, author = {Rivero-Rodriguez, JF and Von, Thun CP and Garcia-Munoz, M and Beaumont, P and Kiptily, V and Garcia-Lopez, J and Goloborodko, V and Jimenez-Ramos, MC and Rodriguez-Ramos, M and Schoepf, K and Yavorskij, V}, doi = {10.1063/5.0043760}, journal-iso = {REV SCI INSTRUM}, journal = {REVIEW OF SCIENTIFIC INSTRUMENTS}, volume = {92}, unique-id = {32180906}, issn = {0034-6748}, abstract = {The JET FILD is a scintillator-based Fast-ion Loss Detector optimized to measure fusion-born alpha-particle losses. This work covers its upgrade and absolute calibration in preparation for the following JET DT experiments. A fast scintillator material (TG-Green) has been installed in the JET FILD. A heater jacket is installed around the fiber bundle, responsible for transmitting the light from the scintillator plate, to anneal the fiber obscuring due to neutron damage. The JET FILD has been upgraded with a 1 Mpx camera and 2MHz photomultiplier data acquisition hardware. Full-orbit simulations give an estimate of the shading effects on the scintillator plate of the first wall structures and provide a synthetic signal of the JET FILD. A detector instrument function enables absolute values of fast-ion losses using calibration factors. The calibration factors are made available in a shot-to-shot basis for the characterized species and energies and with corrections for the diagnostic conditions. The fast acquisition system sets the Nyquist frequency (1 MHz) above the typical mode frequencies (approximate to 10(2) kHz), thus making it possible to identify MHD-induced fast-ion losses. Published under license by AIP Publishing.}, year = {2021}, eissn = {1089-7623} } @article{MTMT:32505599, title = {Design and simulation of an imaging neutral particle analyzer for the ASDEX Upgrade tokamak}, url = {https://m2.mtmt.hu/api/publication/32505599}, author = {Rueda-Rueda, J. and García-Muñoz, M. and Viezzer, E. and Schneider, P.A. and García-Domínguez, J. and Ayllon-Guerola, J. and Galdón-Quiroga, J. and Herrmann, A. and Du, X.D. and Van, Zeeland M.A. and Oyola, P. and Rodriguez-Ramos, M.}, doi = {10.1063/5.0043768}, journal-iso = {REV SCI INSTRUM}, journal = {REVIEW OF SCIENTIFIC INSTRUMENTS}, volume = {92}, unique-id = {32505599}, issn = {0034-6748}, year = {2021}, eissn = {1089-7623} } @article{MTMT:32003019, title = {Simulation of the loss of passing fast ions induced by magnetic islands in EAST tokamak plasmas}, url = {https://m2.mtmt.hu/api/publication/32003019}, author = {Yu, LM and Xue, EB and Zhang, DB and Zheng, SY and Zhang, XM and Huang, J and Li, EZ and Sheng, ZM and Fu, J}, doi = {10.1063/5.0032049}, journal-iso = {AIP ADV}, journal = {AIP ADVANCES}, volume = {11}, unique-id = {32003019}, year = {2021}, eissn = {2158-3226} } @inproceedings{MTMT:32003264, title = {Investigation of Ion Bombardment Role on Radio-Frequency Arcs Ignition}, url = {https://m2.mtmt.hu/api/publication/32003264}, author = {Casagrande, R and Gasparini, F and Funfgelder, H and Siegl, G and Noterdaeme, JM}, booktitle = {23rd Topical Conference on Radiofrequency Power in Plasmas}, doi = {10.1063/5.0013551}, unique-id = {32003264}, year = {2020} } @article{MTMT:31512230, title = {Filamentary plasma eruptions and their control on the route to fusion energy}, url = {https://m2.mtmt.hu/api/publication/31512230}, author = {Ham, C and Kirk, A and Pamela, S and Wilson, H}, doi = {10.1038/s42254-019-0144-1}, journal-iso = {NAT REV PHYS}, journal = {NATURE REVIEWS PHYSICS}, volume = {2}, unique-id = {31512230}, year = {2020}, eissn = {2522-5820}, pages = {159-167} } @article{MTMT:31236851, title = {Determination of the Fast-Ion Phase-Space Coverage for the FILD Spatial Array of the ASDEX Upgrade Tokamak}, url = {https://m2.mtmt.hu/api/publication/31236851}, author = {Ayllon-Guerola, J and Garcia-Baquero, L and Galdon-Quiroga, J and Garcia-Munoz, M and Stipani, L and Gonzalez-Martin, J and Rivero-Rodriguez, J and Rodriguez-Ramos, M and Sanchis-Sanchez, L and Lopez, JG and Herrmann, A}, doi = {10.1088/1748-0221/14/10/C10032}, journal-iso = {J INSTRUM}, journal = {JOURNAL OF INSTRUMENTATION}, volume = {14}, unique-id = {31236851}, issn = {1748-0221}, year = {2019}, eissn = {1748-0221} } @article{MTMT:31324127, title = {Beam-Ion Acceleration during Edge Localized Modes in the ASDEX Upgrade Tokamak}, url = {https://m2.mtmt.hu/api/publication/31324127}, author = {Galdon-Quiroga, J and Garcia-Munoz, M and McClements, KG and Nocente, M and Hoelzl, M and Jacobsen, AS and Orain, F and Rivero-Rodriguez, JF and Salewski, M and Sanchis-Sanchez, L and Suttrop, W and Viezzer, E and Cseh, Gábor and Erdős, B and Kálvin, Sándor Csaba and Kocsis, Lajos Gábor and Nemes-Czopf, Anna and Réfy, Dániel and Szepesi, Tamás Zoltán and Tál, Balázs and Zoletnik, Sándor and Bencze, Attila István and Dunai, Dániel}, doi = {10.1103/PhysRevLett.121.025002}, journal-iso = {PHYS REV LETT}, journal = {PHYSICAL REVIEW LETTERS}, volume = {121}, unique-id = {31324127}, issn = {0031-9007}, year = {2018}, eissn = {1079-7114} } @article{MTMT:30404812, title = {Velocity-space sensitivity and tomography of scintillator-based fast-ion loss detectors}, url = {https://m2.mtmt.hu/api/publication/30404812}, author = {Galdon-Quiroga, J. and Garcia-Munoz, M. and Salewski, M. and Jacobsen, A. S. and Sanchis-Sanchez, L. and Rodriguez-Ramos, M. and Ayllon-Guerola, J. and Garcia-Lopez, J. and Gonzalez-Martin, J. and Jimenez-Ramos, M. C. and Rivero-Rodriguez, J. F. and Viezzer, E. and Cseh, Gábor}, doi = {10.1088/1361-6587/aad76e}, journal-iso = {PLASMA PHYS CONTR F}, journal = {PLASMA PHYSICS AND CONTROLLED FUSION}, volume = {60}, unique-id = {30404812}, issn = {0741-3335}, year = {2018}, eissn = {1361-6587} } @article{MTMT:30490477, title = {A rotary and reciprocating scintillator based fast-ion loss detector for the MAST-U tokamak}, url = {https://m2.mtmt.hu/api/publication/30490477}, author = {Rivero-Rodriguez, J. F. and Garcia-Munoz, M. and Martin, R. and Galdon-Quiroga, J. and Ayllon-Guerola, J. and Akers, R. J. and Buchanan, J. and Croft, D. and Garcia-Vallejo, D. and Gonzalez-Martin, J. and Harvey, D. and McClements, K. G. and Rodriguez-Ramos, M. and Sanchis, L.}, doi = {10.1063/1.5039311}, journal-iso = {REV SCI INSTRUM}, journal = {REVIEW OF SCIENTIFIC INSTRUMENTS}, volume = {89}, unique-id = {30490477}, issn = {0034-6748}, abstract = {The design and unique feature of the first fast-ion loss detector (FILD) for the Mega Amp Spherical Tokamak - Upgrade (MAST-U) is presented here. The MAST-U FILD head is mounted on an axially and angularly actuated mechanism that makes it possible to independently adapt the orientation [0 degrees, 90 degrees] and radial position [1.40 m, 1.60 m] of the FILD head, i.e., its collimator, thus maximizing the detector velocity-space coverage in a broad range of plasma scenarios with different q(95). The 3D geometry of the detector has been optimized to detect fast-ion losses from the neutral beam injectors. Orbit simulations are used to calculate the strike map and predict the expected signals. The results show a velocity-space range of [4 cm, 13 cm] in gyroradius and [30 degrees, 85 degrees] in pitch angle, covering the entire neutral beam ion energy range. The optical system will provide direct sight of the scintillator and simultaneous detection with two cameras, giving high spatial and temporal resolution. The MAST-U FILD will shed light on the dominant fast-ion transport mechanisms in one of the world's two largest spherical tokamaks through absolute measurements of fast-ion losses.}, year = {2018}, eissn = {1089-7623} }