Results 101 to 110 of about 311,028 (224)

Chemically assisted physical sputtering of Tungsten: Identification via the 6Π→6Σ+ transition of WD in TEXTOR and ASDEX Upgrade plasmas

Nuclear Materials and Energy, 2019
Tungsten (W) is a preferred plasma-facing material for areas of high particle and power impact in present day and future fusion devices. The lifetime of W plasma-facing components (PFCs) under steady-state conditions is limited by erosion processes ...
S. Brezinsek, A. Pospieszczyk, G. Sergienko, R. Dux, M. Cavedon, M. Faitsch, K. Krieger   +6 more
doaj   +1 more source

Multi-mode Alfv\'enic Fast Particle Transport and Losses: Numerical vs. Experimental Observation

, 2013
In many discharges at ASDEX Upgrade fast particle losses can be observed due to Alfv\'enic gap modes, Reversed Shear Alfv\'en Eigenmodes or core-localized Beta Alfv\'en Eigenmodes.
Bilato, Roberto, Brüdgam, Michael, García-Muñoz, Manuel, Günter, Sibylle, Lauber, Philipp, Schneller, Mirjam, Team, the ASDEX Upgrade   +6 more
core   +1 more source

The quasi-continuous exhaust regime in JET

Nuclear Fusion
The quasi-continuous exhaust (QCE) regime is a regime that is naturally type-I ELM-free. It combines the high density at the plasma edge needed for power exhaust with the high normalised energy confinement typical for H-mode operation.
M. Faitsch, M. Dunne, E. Lerche, P. Lomas, I. Balboa, P. Bilkova, P. Bohm, A. Kappatou, D. Kos, B. Labit, S. Menmuir, O. Sauter, S. Silburn, E.R. Solano, H.J. Sun, A. Tookey, E. Viezzer, U. Stroth, JET Contributors, the EUROfusion Tokamak Exploitation Team   +19 more
doaj   +1 more source

Further upgrades of the ASDEX Upgrade ICRF system [PDF]

EPJ Web of Conferences
The original plans were to operate the tokamak ASDEX Upgrade (AUG) for ten years. The flexibility of the experiment lead to the fact, that AUG is now operating for over three decades.
Faugel Helmut, Bobkov Volodymyr, Schmidt Alexander Benjamin, Peglau Matthias, Helou Walid, Mulzer Roger, Fünfgelder Helmut, Girka Oleksii, Ochoukov Roman, Mendelevitch Boris   +9 more
doaj   +1 more source

A new B-dot probe-based diagnostic for amplitude, polarization, and wavenumber measurements of ion cyclotron range-of frequency fields on ASDEX Upgrade [PDF]

, 2015
A new B-dot probe-based diagnostic has been installed on an ASDEX Upgrade tokamak to characterize ion cyclotron range-of frequency (ICRF) wave generation and interaction with magnetized plasma.
Ekedahl A., Garrett M. L., H. Faugel, H. Fünfgelder, J.-M. Noterdaeme, R. Ochoukov, Reardon J., V. Bobkov, Van Nieuwenhove R.   +8 more
core   +2 more sources

Radiation transport modelling for the interpretation of oblique ECE measurements

EPJ Web of Conferences, 2017
The electron cyclotron emission (ECE) diagnostic provides routinely electron temperature (Te) measurements. At ASDEX Upgrade an electron cyclotron forward model, solving the radiation transport equation for given Te and electron density profile, is used ...
Denk Severin S., Fischer Rainer, Maj Omar, Poli Emanuele, Stober Jörg K., Stroth Ulrich, Vanovac Branka, Suttrop Wolfgang, Willensdorfer Matthias   +8 more
doaj   +1 more source

Nonlinear alfv\'enic fast particle transport and losses [PDF]

, 2012
Magnetohydrodynamic instabilities like Toroidal Alfv\'en Eigenmodes or core-localized modes such as Beta Induced Alfv\'en Eigenmodes and Reversed Shear Alfv\'en Eigenmodes driven by fast particles can lead to significant redistribution and losses in ...
Brüdgam, Michael, García-Muñoz, Manuel, Günter, Sibylle, Lauber, Philipp, Schneller, Mirjam   +4 more
core   +2 more sources

Neural networks for reconstruction and uncertainty quantification of fast-ion phase-space distributions using FILD and INPA measurements

Nuclear Fusion
This study introduces the use of a deep convolutional neural network for reconstructing fast-ion velocity distributions from fast-ion loss detectors and imaging neutral particle analyzers (INPAs), automatically integrating uncertainty quantification ...
B. S. Schmidt, J. Rueda-Rueda, J. Galdon-Quíroga, M. García-Muñoz, P. A. Schneider, M. Salewski, the ASDEX Upgrade Team   +6 more
doaj   +1 more source

2D and 3D studies of the X-divertor configuration in the future upper divertor of ASDEX upgrade

Nuclear Materials and Energy, 2019
ASDEX Upgrade is planning the installation of a pair of in-vessel coils in order to study alternative divertor configurations, like an X-divertor (XD) or a Snowflake (SF) in a machine with a high heating power compared to its size.
T. Lunt, O. Pan, A. Herrmann, M. Teschke, M. Dunne, Y. Feng, M. Wischmeier   +6 more
doaj   +1 more source

ASCOT: solving the kinetic equation of minority particle species in tokamak plasmas

, 2013
A comprehensive description of methods, suitable for solving the kinetic equation for fast ions and impurity species in tokamak plasmas using Monte Carlo approach, is presented.
Asunta, Otto, Hirvijoki, Eero, Koskela, Tuomas, Kurki-Suonio, Taina, Miettunen, Juho, Sipilä, Seppo, Snicker, Antti, Äkäslompolo, Simppa   +7 more
core   +1 more source