Assessment of validity of local neoclassical transport theory for studies of electric-field root-transitions in the W7-X stellarator

Authors: M.D. Kuczyński, R. Kleiber, H.M. Smith, P. Helander, C.D. Beidler, M. Wappl, M. Borchardt, J. Geiger, S. Bozhenkov, A. Langenberg, T. Andreeva, the W7-X Team

Source: Nuclear Fusion, Vol 65, Iss 1, p 016019 (2024)

Subject Terms: CERC, neoclassical theory, Monte Carlo PIC simulations, stellarator theory, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798

File Description: electronic resource

Relation: https://doaj.org/toc/0029-5515

Access URL: https://doaj.org/article/c308da7ccf344a39a440660da142714b

Overview of the first Wendelstein 7-X long pulse campaign with fully water-cooled plasma facing components

Authors: O. Grulke, C. Albert, J.A. Alcuson Belloso, P. Aleynikov, K. Aleynikova, A. Alonso, G. Anda, T. Andreeva, M. Arvanitou, E. Ascasibar, E. Aymerich, K. Avramidis, J.-P. Bähner, S.-G. Baek, M. Balden, J. Baldzuhn, S. Ballinger, M. Banduch, S. Bannmann, A. Bañón Navarro, L. Baylor, C.D. Beidler, M. Beurskens, C. Biedermann, G. Birkenmeier, T. Bluhm, D. Boeckenhoff, D. Boeyaert, D. Bold, M. Borchardt, D. Borodin, H.-S. Bosch, H. Bouvain, S. Bozhenkov, T. Bräuer, H. Braune, C. Brandt, S. Brezinsek, K.J. Brunner, C. Büschel, R. Bussiahn, A. Buzás, B. Buttenschoen, V. Bykov, I. Calvo, A. Cappa, F. Carovani, D. Carralero, A. Carls, B. Carvalho, D. Castaño-Bardawil, N. Chaudhary, I. Chelis, S. Chen, D. Cipciar, J.W. Coenen, G. Conway, M. Cornelissen, Y. Corre, P. Costello, K. Crombe, G. Cseh, B. Csillag, H.I. Cu Castillo, G. Czymek, H. Damm, R.J. Davies, C. Day, S. Degenkolbe, R. De Wolf, W. Dekeyser, A. Demby, P. Despontin, C.P. Dhard, A. Dinklage, F.A. d’Isa, T. Dittmar, M. Dreval, M. Drevlak, P. Drews, J. Droste, D. Dunai, C. Dyhring, P. van Eeten, E. Edlund, M. Endler, D.A. Ennis, F.J. Escoto, M.S. Espinosa, T. Estrada, D. Fehling, L. Feuerstein, J. Fellinger, Y. Feng, D.L.C. Fernando, S. Fischer, E.R. Flom, O. Ford, T. Fornal, J. Frank, H. Frerichs, G. Fuchert, G. Gantenbein, Y. Gao, K. Garcia, I. García-Cortés, J.M. García-Regaña, B. Geiger, J. Geiger, P. Geissler, M. Gerard, G. Godino-Sedano, T. Gonda, A. González, A. Goriaev, D. Gradic, M. Grahl, H. Greuner, E. Grigore, M. Gruca, J.F. Guerrero Arnaiz, V. Haak, L. van Ham, K. Hammond, B. Hamstra, X. Han, S.K. Hansen, J. Harris, D. Hartmann, D. Hathiramani, S. Hegedus, S. Heinrich, P. Helander, F. Henke, S. Henneberg, L. Henschke, M. Hirsch, U. Hoefel, K. Hoefler, S. Hoermann, K.-P. Hollfeld, A. Holtz, D. Höschen, M. Houry, J. Huang, M. Hubeny, K. Hunger, D. Hwangbo, K. Ida, Y. Igitkhanov, S. Illy, Z. Ioannidis, M. Jablczynska, S. Jablonski, B. Jabłoński, B. Jagielski, M. Jakubowski, J. Jelonnek, F. Jenko, J. Jin, A. Johansson, G. Jouniaux, S. Kajita, J.-P. Kallmeyer, U. Kamionka, W. Kasparek, C. Kawan, Ye. O. Kazakov, N. Kenmochi, W. Kernbichler, A.K. Kharwandikar, M. Khokhlov, C. Killer, A. Kirschner, R. Kleiber, C.C. Klepper, T. Klinger, J. Knauer, A. Knieps, M. Kobayashi, G. Kocsis, Y. Kolesnichenko, A. Könies, J. Kontula, P. Kornejew, S.A. Korteweg, J. Koschinsky, J. Koster, Y. Kovtun, A. Krämer-Flecken, M. Krause, T. Kremeyer, L. Krier, D.M. Kriete, M. Krychowiak, I. Ksia¸zek, M. Kubkowska, M.D. Kuczyński, D. Kulla, A. Kumar, T. Kurki-Suonio, I. Kuzmych, S. Kwak, V. Lancelotti, A. Langenberg, H. Laqua, H.P. Laqua, M.R. Larsen, S. Lazerson, C. Lechte, B. Lee, A. LeViness, M. Lewerentz, Y. Liang, L. Liao, A. Litnovsky, J. Liu, J. Loizu, R. Lopez-Cansino, L.D. Lopez Rodriguez, A. Lorenz, R. Lunsford, Y. Luo, V. Lutsenko, N. Maaziz, M. Machielsen, R. Mackenbach, D. Makowski, E. Maragkoudakis, O. Marchuk, M. Markl, S. Marsen, J. Martínez, N. Marushchenko, S. Masuzaki, D.A. Maurer, M. Mayer, K.J. McCarthy, P. McNeely, D. Medina Roque, J. Meineke, S. Meitner, S. vaz Mendes, A. Menzel-Barbara, B. van Milligen, A. Mishchenko, V. Moiseenko, A. Möller, S. Möller, D. Moseev, G. Motojima, S. Mulas, P. Mulholland, M. Nagel, D. Nagy, Y. Narbutt, D. Naujoks, P. Nelde, R. Neu, O. Neubauer, U. Neuner, D. Nicolai, S. Nielsen, C. Nührenberg, R. Ochoukov, G. Offermanns, J. Ongena, J.W. Oosterbeek, M. Otte, N. Pablant, N. Panadero Alvarez, A. Pandey, G. Partesotti, E.A. Pasch, R. Pavlichenko, E. Pawelec, T.S. Pedersen, V. Perseo, B. Peterson, F. Pisano, B. Plaum, G. Plunk, L. Podavini, N.S. Polei, P. Poloskei, S. Ponomarenko, P. Pons-Villalonga, M. Porkolab, J. Proll, M.J. Pueschel, A. Puig Sitjes, R. Ragona, K. Rahbarnia, M. Rasiński, J. Rasmussen, D. Refy, F. Reimold, M. Richou, J.S. Riemann, K. Riße, J. de la Riva Villén, G. Roberg-Clark, E. Rodriguez, V. Rohde, J. Romazanov, T. Romba, D. Rondeshagen, M. Rud, T. Ruess, T. Rummel, A. Runov, C. Ruset, N. Rust, L. Ryc, T. Rzesnicki, M. Salewski, E. Sánchez, L. Sanchis Sanchez, G. Satheeswaran, J. Schacht, E. Scharff, J. Schilling, G. Schlisio, K. Schmid, J.C. Schmitt, O. Schmitz, M. Schneider, M. Van Schoor, T. Schröder, R. Schroeder, B. Schweer, S. Sereda, B. Shanahan, G. Sias, S. Simko, L. Singh, Y. Siusko, C. Slaby, M. Śle¸czka, B.S. Smith, D.R. Smith, H. Smith, M. Spolaore, A. Spring, T. Stange, A. von Stechow, I. Stepanov, M. Stern, U. Stroth, Y. Suzuki, C. Swee, L. Syrocki, T. Szabolics, T. Szepesi, R. Takacs, H. Takahashi, N. Tamura, C. Tantos, J. Terry, S. Thiede, H. Thienpondt, H. Thomsen, M. Thumm, T. Thun, S. Togo, T. Tork, H. Trimino Mora, A. Tsikouras, Y. Turkin, L. Vano, S. Varoutis, M. Vecsei, J.L. Velasco, M. Verstraeten, M. Vervier, E. Viezzer, J. Wagner, E. Wang, F. Wang, M. Wappl, F. Warmer, T. Wegner, Y. Wei, G. Weir, N. Wendler, U. Wenzel, A. White, F. Wilms, T. Windisch, A. Winter, V. Winters, R. Wolf, G. Wurden, P. Xanthopoulos, H.M. Xiang, S. Xu, H. Yamada, J. Yang, R. Yi, M. Yokoyama, B. Zamorski, M. Zanini, M. Zarnstorff, D. Zhang, S. Zhou, J. Zhu, J. Zimmermann, A. Zocco, S. Zoletnik

Source: Nuclear Fusion, Vol 64, Iss 11, p 112002 (2024)

Subject Terms: stellarator, long-pulse operation, magnetic fusion confinement, divertor detachment, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798

File Description: electronic resource

Relation: https://doaj.org/toc/0029-5515

Access URL: https://doaj.org/article/a05e816389844ac18f2fb63da24bc4a7

Self-consistent, global, neoclassical radial-electric-field calculations of electron-ion-root transitions in the W7-X stellarator

Authors: M.D. Kuczyński, R. Kleiber, H.M. Smith, C.D. Beidler, M. Borchardt, J. Geiger, P. Helander

Source: Nuclear Fusion, Vol 64, Iss 4, p 046023 (2024)

Subject Terms: neoclassical theory, Monte Carlo PIC simulations, stellarator theory, fusion plasmas, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798

File Description: electronic resource

Relation: https://doaj.org/toc/0029-5515

Access URL: https://doaj.org/article/6d66cb52a7504782afcc5e1a988457a4

Conditions and benefits of X-point radiation for the island divertor

Authors: Y. Feng, V. Winters, D. Zhang, J. Geiger, Y. Gao, D. Reiter, P. Helander, C.D. Beidler, M. Endler, D. Gradic, M. Jakubowski, R. König, T. Kremeyer, M. Krychowiak, D. Naujoks, M. Otte, V. Perseo, F. Reimold, G. Schlisio, the W7-X Team

Source: Nuclear Fusion, Vol 64, Iss 8, p 086027 (2024)

Subject Terms: W7-X, island divertor, EMC3-Eirene, detachment stability, X-point radiation, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798

File Description: electronic resource

Relation: https://doaj.org/toc/0029-5515

Access URL: https://doaj.org/article/e480cf4b37d540f18a7ed9fe3958ffb7

Reduction of neoclassical bulk-ion transport to avoid helium-ash retention in stellarator reactors

Authors: C.D. Beidler, M. Drevlak, J. Geiger, P. Helander, H.M. Smith, Y. Turkin

Source: Nuclear Fusion, Vol 64, Iss 12, p 126030 (2024)

Subject Terms: stellarator impurity transport, stellarator reactor optimization, neoclassical helium-ash retention, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798

File Description: electronic resource

Relation: https://doaj.org/toc/0029-5515

Access URL: https://doaj.org/article/86af501a99094e7d850a07360527beca

The effect of plasmoid drifts on the pellet rocket effect in magnetic confinement fusion plasmas

Authors: Guth, N. J., Vallhagen, O., Helander, P., Fülöp, T., Tresnjic, A., Newton, S. L., Pusztai, I.

Subject Terms: Physics - Plasma Physics

Access URL: http://arxiv.org/abs/2412.15824

The pellet rocket effect in magnetic confinement fusion plasmas

Authors: Guth, Nico J., Vallhagen, Oskar, Helander, Per, Pusztai, Istvan, Newton, Sarah L., Fülöp, Tünde

Subject Terms: Physics - Plasma Physics

Access URL: http://arxiv.org/abs/2412.15080

First determination of the $${\rho }$$ ρ parameter at $${\sqrt{s} = 13}$$ s=13 TeV: probing the existence of a colourless C-odd three-gluon compound state

Authors: G. Antchev, P. Aspell, I. Atanassov, V. Avati, J. Baechler, C. Baldenegro Barrera, V. Berardi, M. Berretti, E. Bossini, U. Bottigli, M. Bozzo, R. Bruce, H. Burkhardt, F. S. Cafagna, M. G. Catanesi, M. Csanád, T. Csörgő, M. Deile, F. De Leonardis, A. D’Orazio, M. Doubek, D. Druzhkin, K. Eggert, V. Eremin, F. Ferro, A. Fiergolski, F. Garcia, H. Garcia Morales, V. Georgiev, S. Giani, L. Grzanka, J. Hammerbauer, J. Heino, P. Helander, T. Isidori, V. Ivanchenko, M. Janda, A. Karev, J. Kašpar, J. Kopal, V. Kundrát, S. Lami, G. Latino, R. Lauhakangas, R. Linhart, C. Lindsey, M. V. Lokajíček, L. Losurdo, M. Lo Vetere, F. Lucas Rodríguez, M. Macrí, M. Malawski, A. Mereghetti, N. Minafra, S. Minutoli, D. Mirarchi, T. Naaranoja, F. Nemes, H. Niewiadomski, T. Novák, E. Oliveri, F. Oljemark, M. Oriunno, K. Österberg, P. Palazzi, V. Passaro, Z. Peroutka, J. Procházka, M. Quinto, E. Radermacher, E. Radicioni, F. Ravotti, S. Redaelli, E. Robutti, C. Royon, G. Ruggiero, H. Saarikko, B. Salvachua, A. Scribano, J. Siroky, J. Smajek, W. Snoeys, R. Stefanovitch, J. Sziklai, C. Taylor, E. Tcherniaev, N. Turini, V. Vacek, G. Valentino, J. Welti, J. Wenninger, J. Williams, P. Wyszkowski, J. Zich, K. Zielinski

Source: European Physical Journal C: Particles and Fields, Vol 79, Iss 9, Pp 1-26 (2019)

Subject Terms: Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798

File Description: electronic resource

Relation: http://link.springer.com/article/10.1140/epjc/s10052-019-7223-4; https://doaj.org/toc/1434-6044; https://doaj.org/toc/1434-6052

Access URL: https://doaj.org/article/62f5092602884aa9af8de84925eee5b5

Zombie Epidemic -- on Modeling the Effect of Interventions

Authors: Ek, Kaisa, Avela, Aleksi, Haaki, Willehard, Helander, Sami, Lumme, Ville, Mutikainen, Terho, Pere, Jaakko, Vesselinova, Natalia, Viitasaari, Lauri, Ilmonen, Pauliina

Subject Terms: Statistics - Applications

Access URL: http://arxiv.org/abs/2410.12502

First measurement of elastic, inelastic and total cross-section at $$\sqrt{s}=13$$ s=13 TeV by TOTEM and overview of cross-section data at LHC energies

Authors: G. Antchev, P. Aspell, I. Atanassov, V. Avati, J. Baechler, C. Baldenegro Barrera, V. Berardi, M. Berretti, E. Bossini, U. Bottigli, M. Bozzo, H. Burkhardt, F. S. Cafagna, M. G. Catanesi, M. Csanád, T. Csörgő, M. Deile, F. De Leonardis, A. D’Orazio, M. Doubek, D. Druzhkin, K. Eggert, V. Eremin, F. Ferro, A. Fiergolski, F. Garcia, V. Georgiev, S. Giani, L. Grzanka, J. Hammerbauer, J. Heino, P. Helander, T. Isidori, V. Ivanchenko, M. Janda, A. Karev, J. Kašpar, J. Kopal, V. Kundrát, S. Lami, G. Latino, R. Lauhakangas, R. Linhart, C. Lindsey, M. V. Lokajíček, L. Losurdo, M. Lo Vetere, F. Lucas Rodríguez, M. Macrí, M. Malawski, N. Minafra, S. Minutoli, T. Naaranoja, F. Nemes, H. Niewiadomski, T. Novák, E. Oliveri, F. Oljemark, M. Oriunno, K. Österberg, P. Palazzi, V. Passaro, Z. Peroutka, J. Procházka, M. Quinto, E. Radermacher, E. Radicioni, F. Ravotti, E. Robutti, C. Royon, G. Ruggiero, H. Saarikko, A. Scribano, J. Siroky, J. Smajek, W. Snoeys, R. Stefanovitch, J. Sziklai, C. Taylor, E. Tcherniaev, N. Turini, V. Vacek, J. Welti, J. Williams, P. Wyszkowski, J. Zich, K. Zielinski

Source: European Physical Journal C: Particles and Fields, Vol 79, Iss 2, Pp 1-10 (2019)

Subject Terms: Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798

File Description: electronic resource

Relation: http://link.springer.com/article/10.1140/epjc/s10052-019-6567-0; https://doaj.org/toc/1434-6044; https://doaj.org/toc/1434-6052

Access URL: https://doaj.org/article/0917c4d864954e0cb796db1026af5c32

Quasi-isodynamic stellarators with low turbulence as fusion reactor candidates

Authors: Goodman, Alan G., Xanthopoulos, Pavlos, Plunk, Gabriel G., Smith, Håkan, Nührenberg, Carolin, Beidler, Craig D., Henneberg, Sophia A., Roberg-Clark, Gareth, Drevlak, Michael, Helander, Per

Subject Terms: Physics - Plasma Physics

Access URL: http://arxiv.org/abs/2405.19860

Available energy of plasmas with small fluctuations

Authors: Helander, P., Mackenbach, R. J. J.

Source: J. Plasma Phys. 90 (2024) 905900401

Subject Terms: Physics - Plasma Physics

Access URL: http://arxiv.org/abs/2405.12599

Optimised stellarators with a positive radial electric field

Authors: Helander, Per, Goodman, Alan G., Beidler, Craig D., Kuczyński, Michal, Smith, Håkan M.

Subject Terms: Physics - Plasma Physics

Access URL: http://arxiv.org/abs/2405.07085

Confirmation of the topology of the Wendelstein 7-X magnetic field to better than 1:100,000

Authors: T. Sunn Pedersen, M. Otte, S. Lazerson, P. Helander, S. Bozhenkov, C. Biedermann, T. Klinger, R. C. Wolf, H. -S. Bosch, The Wendelstein 7-X Team

Source: Nature Communications, Vol 7, Iss 1, Pp 1-10 (2016)

Subject Terms: Science

File Description: electronic resource

Relation: https://doaj.org/toc/2041-1723

Access URL: https://doaj.org/article/fc8e142bc97b4203952ed069d8ffb68c

The maximum-$J$ property in quasi-isodynamic stellarators

Authors: Rodriguez, E., Helander, P., Goodman, A. G.

Subject Terms: Physics - Plasma Physics

Access URL: http://arxiv.org/abs/2311.14439

Ion temperature and density gradient driven instabilities and turbulence in Wendelstein 7-X close to the stability threshold

Authors: Podavini, L., Zocco, A., García-Regaña, J. M., Barnes, M., Parra, F. I., Mishchenko, A., Helander, P.

Subject Terms: Physics - Plasma Physics

Access URL: http://arxiv.org/abs/2311.04342

The residual flow in well-optimized stellarators

Authors: Plunk, G. G., Helander, P.

Source: Journal of Plasma Physics , Volume 90 , Issue 2 , April 2024 , 905900205

Subject Terms: Physics - Plasma Physics

Access URL: http://arxiv.org/abs/2310.14218

Available energy of trapped electrons in Miller tokamak equilibria

Authors: Mackenbach, R. J. J., Proll, J. H. E., Snoep, G., Helander, P.

Subject Terms: Physics - Plasma Physics

Access URL: http://arxiv.org/abs/2307.02304

Bounce-averaged drifts: Equivalent definitions, numerical implementations, and example cases

Authors: Mackenbach, R. J. J., Duff, J. M., Gerard, M. J., Proll, J. H. E., Helander, P., Hegna, C. C.

Subject Terms: Physics - Plasma Physics, Physics - Computational Physics

Access URL: http://arxiv.org/abs/2305.01225

Administrative Structures of Higher Education Institutions - Connection with the Experience of Professional Agency of Teaching Staff

Authors: Tanja Hautala (ORCID 0000-0002-6508-9822), Jaakko Helander (ORCID 0000-0002-0733-4236), Vesa Korhonen (ORCID 0000-0001-5265-4549)

Source: International Journal of Leadership in Education. 2024 27(4):909-933.

Peer Reviewed: Y

Page Count: 25

Descriptors: Universities, Colleges, Administrative Organization, College Faculty, Teachers, Professional Autonomy, Experience, Foreign Countries, College Administration, Educational Change, Work Environment, Work Attitudes

Geographic Terms: Finland