Publications (11)
On the effect of flux-surface shaping on trapped-electron modes in quasi-helically symmetric stellarators
M. J. Gerard, M. J. Pueschel, B. Geiger +5
Using a novel optimization procedure it has been shown that the Helically Symmetric eXperiment (HSX) stellarator can be optimized for reduced trapped-electron-mode (TEM) instabilit…
Computing Flux-Surface Shapes in Tokamaks and Stellarators
M. J. Gerard, M. J. Pueschel, S. Stewart +2
There is currently no agreed-upon methodology for characterizing a stellarator magnetic field geometry, and yet modern stellarator designs routinely attain high levels of magnetic-…
The role of vimentin in regulating cell-invasive migration in dense cultures of breast carcinoma cells
Y. Messica, A. Laser-Azogui, T. Volberg +6
Cell migration and mechanics are tightly regulated by the integrated activities of the various cytoskeletal networks. In cancer cells, cytoskeletal modulations have been implicated…
Evidence of sub-surface energy storage in comet 67P from the outburst of 2016 July 3
J. Agarwal, V. Della Corte, P. D. Feldman +67
On 3 July 2016, several instruments on board ESA's Rosetta spacecraft detected signs of an outburst event on comet 67P, at a heliocentric distance of 3.32 AU from the sun, outbound…
Flexible Stellarator Physics Facility
F. I. Parra, S. -G. Baek, M. Churchill +21
We propose to build a Flexible Stellarator Physics Facility to explore promising regions of the vast parameter space of disruption-free stellarator solutions for Fusion Pilot Plant…
First year of coordinated science observations by Mars Express and ExoMars 2016 Trace Gas Orbiter
A. Cardesin-Moinelo, B. Geiger, G. Lacombe +8
In this paper we describe the first combined observations executed by the Mars Express and Trace Gas Orbiter missions since the start of the TGO operational phase in April 2018 unt…
Validation of gyrokinetic modelling of light impurity transport including rotation in ASDEX Upgrade
F. J. Casson, R. M. McDermott, C. Angioni +9
Upgraded spectroscopic hardware and an improved impurity concentration calculation allow accurate determination of boron density in the ASDEX Upgrade tokamak. A database of boron m…
Validating the ASCOT modelling of NBI fast ions in Wendelstein 7-X stellarator
S. Ãkäslompolo, P. Drewelow, Y. Gao +37
The first fast ion experiments in Wendelstein 7-X were performed in 2018. They are one of the first steps in demonstrating the optimised fast ion confinement of the stellarator. Th…
Experimental investigation of the radial structure of energetic particle driven modes
L. Horvath, G. Papp, Ph. Lauber +8
Alfvén eigenmodes (AEs) and energetic particle modes (EPMs) are often excited by energetic particles (EPs) in tokamak plasmas. One of the main open questions concerning EP driven…
Advancing technologies for high-resolution spatial and temporal measurements of macroscopic stellarator flows
A. M. Wright, D. J Den Hartog, B. Geiger +3
Stellarators, together with tokamaks, represent the two mainstream approaches to realizing fusion energy via toroidal magnetic confinement of highly ionized gases - plasmas - at ex…
Suppression of core turbulence by profile shaping in Wendelstein 7-X
A. v. Stechow, O. Grulke, Th. Wegner +23
In the Wendelstein 7-X magnetic confinement experiment, a reduction of turbulent density fluctuations as well as anomalous impurity diffusion is associated with a peaking of the pl…