Results 61 to 70 of about 387 (143)

The quasi-continuous exhaust regime in JET

open access: yesNuclear 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   +19 more
doaj   +1 more source

Extension of electron cyclotron heating at ASDEX Upgrade with respect to high density operation

open access: yesEPJ Web of Conferences, 2017
The ASDEX Upgrade electron cyclotron resonance heating operates at 105 GHz and 140 GHz with flexible launching geometry and polarization. In 2016 four Gyrotrons with 10 sec pulse length and output power close to 1 MW per unit were available.
Schubert Martin   +10 more
doaj   +1 more source

Overview of the ASDEX Upgrade results

open access: yesNuclear Fusion
After a 26-month vent ASDEX Upgrade (AUG) went back in operation with a newly designed upper W-divertor suitable for alternative divertor configurations (featuring in-vessel coils and cryo-pump).
T. Pütterich   +428 more
doaj   +1 more source

Radiation transport modelling for the interpretation of oblique ECE measurements

open access: yesEPJ 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.   +8 more
doaj   +1 more source

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

open access: yesNuclear 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   +6 more
doaj   +1 more source

Determination of the stochastic layer properties induced by magnetic perturbations via heat pulse experiments at ASDEX upgrade

open access: yesNuclear Materials and Energy, 2017
A heat pulse experiment was carried out in the tokamak ASDEX Upgrade to estimate the stochastic layer width of a deuterium L-mode discharge with externally applied Magnetic Perturbations.
D. Brida   +12 more
doaj   +1 more source

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

open access: yesNuclear Fusion
Advanced tokamak (AT) scenarios applying additional heating during the current ramp (early-heating) usually require many iterations if developed fully empirically.
Raphael Schramm   +8 more
doaj   +1 more source

Divertor enrichment of recycling impurity species (He, N2, Ne, Ar, Kr) in ASDEX Upgrade H-modes

open access: yesNuclear Fusion
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.
A. Kallenbach   +9 more
doaj   +1 more source

Compact shunts for the upper divertor of ASDEX Upgrade [PDF]

open access: yesAIP Advances
The compact shunts that are mounted in the upper divertor of ASDEX Upgrade are now operational and measure the thermocurrents generated by the temperature difference between the two target plates of the upper divertor cassette.
L. Giannone   +8 more
doaj   +1 more source

Advances, Challenges, and Future Perspectives of Microwave Reflectometry for Plasma Position and Shape Control on Future Nuclear Fusion Devices. [PDF]

open access: yesSensors (Basel), 2023
Gonçalves B   +21 more
europepmc   +1 more source

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