Asdex upgrade fusion reactor

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Letztendlich verspricht der asdex upgrade fusion reactor eine saubere und praktisch unerschöpfliche energiequelle für die zukunft. These models predict energy confinement in AUG better than the commonly used global scaling laws, representing a large step towards the goal of predictive capability.

Der asdex upgrade fusion reactor stellt einen spannenden fortschritt in der fusionsforschung dar. Es ist ein komplexes zusammenspiel vieler wissenschaftlicher disziplinen. In the area of MHD physics, analysis of the hot plasma core motion in sawtooth crashes showed good agreement with nonlinear 2-fluid simulations.

Die messergebnisse von asdex upgrade liefern wertvolle daten für zukünftige kraftwerke. The “Axial-Symmetric Divertor Experiment” ASDEX Upgrade, a tokamak-type fusion device, has been in operation at Max Planck Institute for Plasma Physics in Garching near Munich since These extensions will further improve our capability to establish first principles understanding of fusion plasma physics, which is needed in order to safely extrapolate from present day devices to reactors.

A new momentum transport analysis framework has been developed that provides access to the intrinsic torque in the plasma core.

Experiments on ASDEX Upgrade AUG in and have addressed a number of critical issues for ITER and EU DEMO. Progress was also made modelling the force reduction of VDEs induced by massive gas injection on AUG. The H-mode density limit was characterised in terms of safe operational space with a newly developed active feedback control method that allowed the stability boundary to be probed several times within a single discharge without inducing a disruptive termination.

Die globale zusammenarbeit im bereich der fusionsenergie ist entscheidend.

ASDEX Upgrade

Auch die entwicklung robusterer materialien für die reaktorwände spielt eine wichtige rolle. ASDEX Upgrade (Axially Symmetric Divertor Experiment) is a divertor tokamak at the Max-Planck-Institut für Plasmaphysik, Garching that went into operation in At present, it is Germany 's second largest fusion experiment after stellarator Wendelstein 7-X.

Noch sind viele technische hürden zu überwinden, aber die fortschritte sind ermutigend. The Tokamak experiment ASDEX Upgrade (AUG) generates fusion plasmas to examine the physics of future fusion reactors. The enhanced D-alpha EDA and quasi-continuous exhaust QCE regimes have been established as promising ELM-free scenarios.

Candidates for this increased transport are locally enhanced turbulence and a locked magnetic island in the pedestal. In the area of transport physics, full radius models for both L- and H-modes have been developed. Conversely, ELM suppression by RMPs is ascribed to an increased pedestal transport that keeps the plasma away from this boundary.

Here, the exhaust power is radiated before reaching the target, allowing close proximity of the X-point to the target. Die hoffnung ist, dass diese technologie die energiewende maßgeblich mitgestalten kann. In the field of exhaust, the X-Point Radiator XPR , a cold and dense plasma region on closed flux surfaces close to the X-point, was described by an analytical model that provides an understanding of its formation as well as its stability, i.

The research program is focused on the construction and operation of the ITER fusion experiment and the next step DEMO reactor. Ein zentrales element ist die magnetische einschlusskammer, die das plasma beherbergt. Die optimierung der plasmastabilität ist eine der größten herausforderungen dabei.

Concerning disruption physics, a shattered pellet injection system was installed in collaboration with the ITER International Organisation. Forscher arbeiten intensiv daran, die effizienz der energieerzeugung zu steigern.

Concerning pedestal physics, the mitigation of edge localised modes ELMs using resonant magnetic perturbations RMPs was found to be consistent with a reduction of the linear peeling-ballooning stability threshold due to the helical deformation of the plasma.

With respect to the pumping of non-recycling impurities, the divertor enrichment was found to mainly depend on the ionisation energy of the impurity under consideration. Ziel ist es, nachhaltige energie durch die verschmelzung von atomkernen zu gewinnen.

This is suggestive that the EDA and QCE regimes have a common underlying physics origin. With the XPR close to the divertor target, a new detached divertor concept, the compact radiative divertor, was developed. No limitations by the shallow field line angle due to the large flux expansion were observed, and sufficient compression of neutral density was demonstrated.

Here, the pressure gradient at the foot of the H-mode pedestal is reduced by a quasi-coherent mode, consistent with violation of the high-n ballooning mode stability limit there. A major objective of the AUG programme is to shed light on the underlying physics of confinement, stability, and plasma exhaust in order to allow reliable extrapolation of results obtained on present day machines to these reactor-grade devices.

Thanks to the ability to vary the shard size distribution independently of the injection velocity, as well as its impurity admixture, it was possible to tailor the current quench rate, which is an important requirement for future large devices such as ITER.