Results 1 to 10 of about 1,108 (163)

Runaway electrons and their interaction with tungsten wall: a comprehensive study of effects [PDF]

Scientific Reports, 2023
Runaway electrons are a notable phenomenon occurring during the operation of a tokamak. Proper material selection for the tokamak's first wall structure and plasma facing components, particularly in large sizes tokamaks like ITER and DEMO, is crucial due
Laleh Ataeiseresht, Mohammad Reza Abdi, Banafsheh Pourshahab, Chapar Rasouli   +3 more
doaj   +2 more sources

Runaway electrons and Bremsstrahlung

New Journal of Physics, 2016
If an electric field is applied to a plasma, it causes ‘runaway’ acceleration of some electrons—a phenomenon that has been known for almost a century. A paper by Embréus et al (2016 New J. Phys.
Per Helander
doaj   +3 more sources

Quasisteady turbulence driven by runaway electrons [PDF]

Physics of Fluids, 1982
The evolution of the turbulence driven by runaway electrons has been followed by means of a computer code based on the quasilinear equations. The evolution is not characterized by periodic relaxations as claimed in previous works but ends in a quasisteady turbulent, yet very persistent state, accessible from different initial conditions.
Vaclavik J
exaly   +3 more sources

Trapped-electron runaway effect [PDF]

Journal of Plasma Physics, 2015
In a tokamak, trapped electrons subject to a strong electric field cannot run away immediately, because their parallel velocity does not increase over a bounce period. However, they do pinch toward the tokamak center. As they pinch toward the center, the trapping cone becomes more narrow, so eventually they can be detrapped and run away.
Nilsson, E., Decker, J., Fisch, N. J., Peysson, Y.   +3 more
openaire   +2 more sources

Runaway electron beam control [PDF]

Plasma Physics and Controlled Fusion, 2018
Abstract Post-disruption runaway electron (RE) beams in tokamaks with large current can cause deep melting of the vessel and are one of the major concerns for ITER operations. Consequently, a considerable effort is provided by the scientific community in order to test RE mitigation strategies.
Carnevale, D., Ariola, M., Artaserse, G., Bagnato, F., Bin, W., Boncagni, L., Bolzonella, T., Bombarda, F., Buratti, P., Calacci, L., Causa, F., Coda, S., Cordella, F., Decker, J., De Tommasi, G., Duval, B., Esposito, B., Ferro, G., Ficker, O., Gabellieri, L., Gabrielli, A., Galeani, S., Galperti, C., Garavaglia, S., Havranek, A., Gobbin, M., Gospodarczyk, M., Granucci, G., Joffrin, E., Lennholm, M., Lier, A., Macusova, E., Martinelli, F., Martin-Solis, J. R., Mlynar, J., Panaccione, L., Papp, G., Passeri, M., Pautasso, G., Popovic, Z., Possieri, C., Pucella, G., Sheikh, U. A., Ramogida, G., Reux, C., Rimini, F., Romano, A., Sassano, M., Tilia, B., Tudisco, O., Valcarcel, D., Abduallev, S., Abhangi, M., Abreu, P., Afzal, M., Aggarwal, K. M., Ahlgren, T., Ahn, J. H., Aho-Mantila, L., Aiba, N., Airila, M., Albanese, R., Aldred, V., Alegre, D., Alessi, E., Aleynikov, P., Alfier, A., Alkseev, A., Allinson, M., Alper, B., Alves, E., Ambrosino, G., Ambrosino, R., Amicucci, L., Amosov, V., Sunden, E. Andersson, Angelone, M., Anghel, M., Angioni, C., Appel, L., Appelbee, C., Arena, P., Ariola, M., Arnichand, H., Arshad, S., Ash, A., Ashikawa, N., Aslanyan, V., Asunta, O., Auriemma, F., Austin, Y., Avotina, L., Axton, M. D., Ayres, C., Bacharis, M., Baciero, A., Baiao, D., Bailey, S., Baker, A., Balboa, I., Balden, M., Balshaw, N., Bament, R., Banks, J. W., Baranov, Y. F., Barnard, M. A., Barnes, D., Barnes, M., Barnsley, R., Wiechec, A. Baron, Orte, L. Barrera, Baruzzo, M., Basiuk, V., Bassan, M., Bastow, R., Batista, A., Batistoni, P., Baughan, R., Bauvir, B., Baylor, L., Bazylev, B., Beal, J., Beaumont, P. S., Beckers, M., Beckett, B., Becoulet, A., Bekris, N., Beldishevski, M., Bell, K., Belli, F., Bellinger, M., Belonohy, E., Ben Ayed, N., Benterman, N. A., Bergsaker, H., Bernardo, J., Bernert, M., Berry, M., Bertalot, L., Besliu, C., Beurskens, M., Bieg, B., Bielecki, J., Biewer, T., Bigi, M., Bilkova, P., Binda, F., Bisoffi, A., Bizarro, J. P. S., Bjorkas, C., Blackburn, J., Blackman, K., Blackman, T. R., Blanchard, P., Blatchford, P., Bobkov, V., Boboc, A., Bodnar, G., Bogar, O., Bolshakova, I., Bolzonella, T., Bonanomi, N., Bonelli, F., Boom, J., Booth, J., Borba, D., Borodin, D., Borodkina, I., Botrugno, A., Bottereau, C., Boulting, P., Bourdelle, C., Bowden, M., Bower, C., Bowman, C., Boyce, T., Boyd, C., Boyer, H. J., Bradshaw, J. M. A., Braic, V., Bravanec, R., Breizman, B., Bremond, S., Brennan, P. D., Breton, S., Brett, A., Brezinsek, S., Bright, M. D. J., Brix, M., Broeckx, W., Brombin, M., Broslawski, A., Brown, D. P. D., Brown, M., Bruno, E., Bucalossi, J., Buch, J., Buchanan, J., Buckley, M. A., Budny, R., Bunting, P., Burckhart, A., Carraro, L., Cenedese, A., Chang, C. S., Chitarin, G., Coelho, R., Cruz, N., Dankowski, J., de Pablos, J. L., Douai, D., Dumortier, P., Enachescu, M., Fanni, A., Fresa, R., Futatani, S., Garcia, J., Garcia-Munoz, M., Gaudio, P., Goncalves, B., Graham, M. E., Hager, R., Hakola, A., Hawkins, P., Henriques, R., Huijsmans, G. T. A., Jardin, A., Jarvinen, A., Jaulmes, F., Kos, B., Koskela, T., Lahtinen, A., Liang, Y., Loarte, A., Luce, T., Lukin, A., Makwana, R., Malizia, A., Marchetto, C., Marocco, D., Matejcik, S., Mattei, M., McCormack, O., Minucci, S., Monakhov, I., Moro, F., Murari, A., Nabais, F., Nespoli, F., Nishijima, D., Orszagh, J., Otin, R., Packer, L. W., Pajuste, E., Pereira, A., Piron, L., Pironti, A., Plyusnin, V., Ragona, R., Rebai, M., Rohde, V., Romazanov, J., Rubinacci, G., Santos, B., Sias, G., Soare, S., Sonato, P., Stamatelatos, I., Stankunas, G., Subba, F., Tang, W., Tardocchi, M., Tokitani, M., Tomes, M., Uytdenhouwen, I., Varoutis, S., Rinati, G. Verona, Vicente, J., Villone, F.   +278 more
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Nonlinear Cone Model for Investigation of Runaway Electron Synchrotron Radiation Spot Shape

East European Journal of Physics, 2021
The runaway electron event is the fundamental physical phenomenon and tokamak is the most advanced conception of the plasma magnetic confinement. The energy of disruption generated runaway electrons can reach as high as tens of mega-electron-volt and ...
Igor M. Pankratov, Volodymyr Y. Bochko
doaj   +1 more source

Runaway electron generation in tokamak disruptions [PDF]

Plasma Physics and Controlled Fusion, 2009
Runaway electrons can be generated in disruptions by the Dreicer, hot tail and avalanche mechanisms. Analytical and numerical results for hot tail runaway generation are included in a one-dimensional model of electric field, temperature and runaway current, which is applied to simulate disruptions and fast shutdown.
Smith, H. M., Fehér, T., Fülöp, T., Gál, K., Verwichte, E.   +4 more
openaire   +3 more sources

Observation of relativistic runaway electrons with a wide-angle infrared periscope system in HL-2A [PDF]

AIP Advances
To gauge synchrotron radiation from relativistic runaway electrons during plasma disruptions, a novel wide-angle infrared periscope system has been installed and commissioned on the HL-2A tokamak.
Z. K. Wang, J. M. Gao, Q. Y. Tan, Y. B. Dong, Y. Liu, Y. P. Zhang, C. Y. Chen, W. Li, X. Q. Ji   +8 more
doaj   +1 more source

Resistive stability of a plasma with runaway electrons [PDF]

Physics of Plasmas, 2007
In tokamak disruptions the Ohmic current is often replaced by a current of runaway electrons, which is likely to be more peaked in the center of the discharge than the predisruption current. This raises the question of the resistive stability of the postdisruption plasma, where the equilibrium current is entirely carried by the runaway electrons while ...
P. HELANDER, D. GRASSO, R. J. HASTIE, PERONA, ANNA   +3 more
openaire   +4 more sources

Long-Lived Banana Orbit Formation of Suprathermal Electrons During MHD Spikes in Runaway Tokamak Discharges

East European Journal of Physics, 2019
The secondary runaway electrons generation is the process in which already existing high energy runaway electrons knock out thermal plasma electrons directly into the runaway region by close Coulomb collisions.
Igor Pankratov, Volodymyr Bochko
doaj   +1 more source