Results 81 to 90 of about 90,764 (192)

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

L- to H-mode transitions at low density in ASDEX Upgrade [PDF]

, 2011
The results from ASDEX Upgrade discharges dedicated specifically to the investigation of low-density L-to-H transitions are presented. The plasmas were heated by electron cyclotron resonance heating to achieve a separation of electron and ion heat ...
Sauter, P., E. Viezzer, Conway, G. D., S.K. Rathgeber, Fischer, R., R. Fischer, McDermott, R., E. Wolfrum, Rathgeber, S. K., Conway, G., Rathgeber, S., Pütterich, T., T. Pütterich, F. Ryter, P. Sauter, McDermott, R. M., Kurzan, B., ASDEX Upgrade Team, B. Kurzan, Viezzer, E., G.D. Conway, R.M. McDermott, Ryter, F., Wolfrum, E.   +23 more
core   +1 more source

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

Recent Developments in the ASDEX Upgrade DAQ and RP Environment

, 2005
The ASDEX Upgrade data acquisition environment has been extended by new diagnostics which considerably increase the amount of data acquired. The new diagnostics, as well as the server, storage, and network upgrades are presented.
Behler, K. ; https://orcid.org/
core  

Hydrogen Ion Cyclotron Wall Conditioning for Fuel Removal on TEXTOR and ASDEX Upgrade [PDF]

, 2012
Ion Cyclotron Wall Conditioning (ICWC), applicable in presence of the toroidal magnetic field, is envisaged in ITER to recover from disruptions, leaks and torus vents, for recycling control and for fuel removal.
Rubel, M, Crombé, Kristel, Sergienko, G, Koslowski, Hans Rudolf, Freisinger, M., Noterdaeme, J.-M., Möller, S., Kogut, D., Möller, S, Noterdaeme, J., Crombé, K., Kreter, A, Philipps, V, Vervier, M, Douai, D., Freisinger, M, Van Schoor, M., the TEXTOR team, Nicolai, D., Koslowski, R., Rohde, V., Wauters, T., Rubel, M., Vervier, M., Rohde, V, TEXTOR Team, Bobkov, V., ASDEX Upgrade Team, Douai, D, Nicolai, D, Van Schoor, M, Philipps, V., Lyssoivan, A, Wauters, T, Bobkov, V, Sergienko, G., Koslowski, R, Lyssoivan, A., Kogut, D, Noterdaeme, Jean-Marie, the ASDEX Upgrade Team, Kreter, A.   +41 more
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Molecular contribution to the Dα emission in the divertor of the ASDEX Upgrade experiment

, 2007
Spectral line emission from the deuterium Balmer alpha line and from molecular deuterium in the Fulcher band, d(3)Pi(u)-> a(3)Sigma(+)(g), was studied in the outer divertor region of the ASDEX Upgrade plasma with a pair of relatively calibrated ...
Pugno, R., Rachlew, Elisabeth,, Fantz, U.,, Rachlew, E., Fantz, U., Menmuir, Sheena,, Dux, R., Menmuir, S., Fantz, Ursel, ASDEX Upgrade Team, Pugno, R.,, Dux, R.,   +11 more
core   +1 more source

Non-adiabatic passing electron response and outward impurity convection in gyrokinetic calculations of impurity transport in ASDEX upgrade plasmas [PDF]

, 2007
Gyrokinetic calculations with the GS2 code of impurity transport in ASDEX Upgrade H-mode plasmas are presented. A method to separate the diagonal and off-diagonal terms in the quasi-linear flux computed by the gyrokinetic code for a trace impurity is ...
Angioni, C., Angioni, C. ; https://orcid.org/, Peeters, A., Fable, E., Dux, R., HASH(0x55a67f7a4f40), Peeters, A. G., ASDEX Upgrade Team   +7 more
core   +1 more source

Tungsten behaviour in radiatively cooled plasma discharges in ASDEX Upgrade [PDF]

, 2011
In the all W ASDEX Upgrade impurities are injected routinely for radiative cooling. Amongst the different species used, nitrogen has been shown to provide the best cooling effect, while maintaining or even improving the energy confinement.
G. J. van Rooij, Potzel, S., Fischer, R., Janzer, A., Dux, R., Pütterich, T., Neu, R., ASDEX Upgrade Team, Sertoli, M., van Rooij, G., Müller, H. W., Fuchs, J. C., Fuchs, J., Müller, H., Kallenbach, A.   +14 more
core  

Development and application of a predictive model for advanced tokamak scenario design

Nuclear Fusion
Advanced tokamak (AT) scenarios applying additional heating during the current ramp (early-heating) usually require many iterations if developed fully empirically.
Raphael Schramm, Alexander Bock, Emiliano Fable, Jörg Stober, Marc Maraschek, Maximilian Reisner, Rainer Fischer, Hartmut Zohm, the ASDEX-Upgrade Team   +8 more
doaj   +1 more source

Determination of photon efficiencies and hydrocarbon influxes in the detached outer divertor plasma of ASDEX upgrade [PDF]

, 2007
Hydrocarbon injection experiments with in situ calibration of spectroscopic signals have been carried out to determine the hydrocarbon flux and the chemical erosion yield under detached plasma conditions in ASDEX Upgrade.
Brezinsek, S., Pugno, R., Fantz, U., Mertens, P., Fantz, Ursel, Manhard, A., Müller, H. W., Müller, H., Kallenbach, A., Mertens, Ph., ASDEX Upgrade Team   +10 more
core   +1 more source