Zobrazeno 1 - 10
of 257
pro vyhledávání: '"R.M. McDermott"'
Autor:
A. Kallenbach, R. Dux, S.S. Henderson, C. Tantos, M. Bernert, C. Day, R.M. McDermott, V. Rohde, A. Zito, the ASDEX Upgrade Team
Publikováno v:
Nuclear Fusion, Vol 64, Iss 5, p 056003 (2024)
Particle balance calculations are done for the seeding species N _2 , Ne, Ar, Kr as well as He with the aim of obtaining a realistic description of the divertor and core plasma impurity content. Experimental time traces of main plasma impurity densit
Externí odkaz:
https://doaj.org/article/05cc83332aa24c91bd9c471931a7cc08
Autor:
A. Mariani, L. Aucone, A. Balestri, P. Mantica, G. Merlo, R. Ambrosino, F. Bagnato, L. Balbinot, J. Ball, T. Bolzonella, D. Brioschi, I. Casiraghi, A. Castaldo, S. Coda, L. Frassinetti, V. Fusco, T. Happel, J. Hobirk, P. Innocente, R.M. McDermott, P. Muscente, T. Pütterich, O. Sauter, F. Sciortino, M. Vallar, B. Vanovac, N. Vianello, G. Vlad, C.F.B. Zimmermann, the EUROfusion Tokamak Exploitation team, the TCV Team, the ASDEX Upgrade Team
Publikováno v:
Nuclear Fusion, Vol 64, Iss 10, p 106024 (2024)
Experiments, gyrokinetic simulations and transport predictions were performed to investigate if a negative triangularity (NT) L-mode option for the Divertor Tokamak Test (DTT) full-power scenario would perform similarly to the positive triangularity
Externí odkaz:
https://doaj.org/article/ad8c023c71ac4433897c59a75f9f17f3
Autor:
D. Fajardo, C. Angioni, E. Fable, G. Tardini, R. Bilato, T. Luda, R.M. McDermott, O. Samoylov, the ASDEX Upgrade Team
Publikováno v:
Nuclear Fusion, Vol 64, Iss 10, p 104001 (2024)
In present-day fusion devices, central wave heating is crucial to avoid core tungsten (W) accumulation. In this work, we present an integrated modelling framework that reproduces the reduction of core W peaking in ASDEX Upgrade experiments when multi
Externí odkaz:
https://doaj.org/article/ce529e5c153f4ffb981fa3a55e89f509
Autor:
M. Bernert, S. Wiesen, O. Février, A. Kallenbach, J.T.W. Koenders, B. Sieglin, U. Stroth, T.O.S.J. Bosman, D. Brida, M. Cavedon, P. David, M.G. Dunne, S. Henderson, B. Kool, T. Lunt, R.M. McDermott, O. Pan, A. Perek, H. Reimerdes, U. Sheikh, C. Theiler, M. van Berkel, T. Wijkamp, M. Wischmeier
Publikováno v:
Nuclear Materials and Energy, Vol 34, Iss , Pp 101376- (2023)
Future fusion reactors require a safe, steady-state divertor operation. With deep divertor detachment, which is typically induced by impurity seeding, the radiation concentrates in a small region at the X-point or on closed flux surfaces above the X-
Externí odkaz:
https://doaj.org/article/a19cf8e87ba64819b1c5210e6d695632
Publikováno v:
Nuclear Materials and Energy, Vol 34, Iss , Pp 101346- (2023)
For gas puff imaging (GPI) studies of turbulent processes in the plasma edge, it is often assumed that the emitted light is mainly proportional to the local electron density. This, however, only holds for low electron densities in the far scrape-off
Externí odkaz:
https://doaj.org/article/d832f7c38cf84d91a3401e07e3cbc551
Autor:
D. Silvagni, P.T. Lang, T. Happel, A. Bock, R. Fischer, L. Gil, O.J.W.F. Kardaun, R.M. McDermott, U. Plank, B. Plöckl, D. Stieglitz, G. Tardini, the ASDEX Upgrade Team
Publikováno v:
Nuclear Fusion, Vol 63, Iss 8, p 084001 (2023)
This letter reports on the efforts carried out at the ASDEX Upgrade tokamak to integrate I-mode plasmas with pellet fueling and to increase the I-mode Greenwald fraction $f_{\mathrm{GW}}$ , two important requirements for any DEMO operational scenario
Externí odkaz:
https://doaj.org/article/040ebffe9f67413ab895d1744dbc1ad2
Autor:
A. Zito, M. Wischmeier, A. Kappatou, A. Kallenbach, F. Sciortino, V. Rohde, K. Schmid, E.T. Hinson, O. Schmitz, M. Cavedon, R.M. McDermott, R. Dux, M. Griener, U. Stroth, the ASDEX Upgrade Team
Publikováno v:
Nuclear Fusion, Vol 63, Iss 9, p 096027 (2023)
An efficient removal of He ash by active pumping in future fusion devices is necessary to avoid fuel dilution and not degrade the core confinement properties. Therefore, a deep understanding of the underlying physics mechanisms is mandatory. Helium e
Externí odkaz:
https://doaj.org/article/a4521c74ae5d423bb74201af40c554c8
Autor:
C.F.B. Zimmermann, R.M. McDermott, C. Angioni, B.P. Duval, R. Dux, E. Fable, A. Salmi, U. Stroth, T. Tala, G. Tardini, T. Pütterich, the ASDEX Upgrade Team
Publikováno v:
Nuclear Fusion, Vol 63, Iss 12, p 126006 (2023)
Advanced momentum transport analysis is used to study matched hydrogen (H) and deuterium (D) plasmas in the core of ASDEX Upgrade. The aim is to validate gyrokinetic theory and assess a possible isotope dependence. The methodology extracts momentum d
Externí odkaz:
https://doaj.org/article/6aa5efa85c9f4f71830710e9ca162999
Autor:
C.F.B. Zimmermann, R.M. McDermott, C. Angioni, B.P. Duval, R. Dux, E. Fable, T. Luda, A. Salmi, U. Stroth, T. Tala, G. Tardini, T. Pütterich, the ASDEX Upgrade Team
Publikováno v:
Nuclear Fusion, Vol 63, Iss 12, p 124003 (2023)
A new approach to infer the momentum transport in tokamak core plasmas via perturbation experiments is presented. For the first time, the analysis self-consistently includes all momentum transport components and their time dependencies, which are ess
Externí odkaz:
https://doaj.org/article/65e38810e6444de5a49c53ed74ec1c67
Autor:
N. Leuthold, W. Suttrop, M. Willensdorfer, G. Birkenmeier, D. Brida, M. Cavedon, M. Dunne, G.D. Conway, R. Fischer, L. Gil, T. Happel, P. Hennequin, A. Kappatou, A. Kirk, P. Manz, R.M. McDermott, J. Vicente, H. Zohm, the ASDEX Upgrade Team, the EUROfusion MST1 Team
Publikováno v:
Nuclear Fusion, Vol 63, Iss 4, p 046014 (2023)
We study localized edge turbulence in the ASDEX Upgrade tokamak that appears if resonant magnetic perturbations (RMP) are applied to suppress edge localized modes (ELMs) in the high confinement mode. The concomitant density fluctuations are detected
Externí odkaz:
https://doaj.org/article/4366f9da340749dbb4b88fb9f2841769