Results 91 to 100 of about 6,348 (198)

K2 Discovers a Busy Bee: An Unusual Transiting Neptune Found in the Beehive Cluster

, 2016
Open clusters have been the focus of several exoplanet surveys but only a few planets have so far been discovered. The \emph{Kepler} spacecraft revealed an abundance of small planets around small, cool stars, therefore, such cluster members are prime ...
Aller, Kimberly M., Beichmann, Charles A., Christiansen, Jessie L., Ciardi, David R., Crossfield, Ian J. M., David, Trevor J., Everett, Mark, Henning, Thomas, Hillenbrand, Lynne A., Hirsch, Lea, Horch, Elliot, Howard, Andrew W., Howell, Steve B., Isaacson, Howard, Kluge, Matthias, Liu, Michael C., Livingston, John, Lépine, Sébastien, Obermeier, Christian, Petigura, Erik A., Saglia, Roberto P., Schlieder, Joshua E., Sinukoff, Evan, Teske, Johanna   +23 more
core   +1 more source

A neural network-based method for input parameter optimization of edge transport modeling utilizing experimental diagnostics

Nuclear Fusion
A neural network-based method is developed to fast optimize EMC3-EIRENE input parameters, enabling EMC3-EIRENE to produce synthetic data that closely match experimental measurements on Wendelstein 7-X.
Y. Luo, S. Xu, Y. Liang, E. Wang, J. Cai, Y. Feng, D. Reiter, A. Knieps, S. Brezinsek, D. Harting, M. Krychowiak, D. Gradic, P. Ren, D. Zhang, Y. Gao, G. Fuchert, A. Pandey, M. Jakubowski, the W7-X Team   +18 more
doaj   +1 more source

Experimental investigation of the ECRH stray radiation during the start-up phase in Wendelstein 7-X

EPJ Web of Conferences, 2017
Electron cyclotron resonance heating (ECRH) is the main heating mechanism in the Wendelstein 7-X stellarator (W7-X). W7-X is equipped with five absolutely calibrated sniffer probes that are installed in each of the five modules of the device. The sniffer
Moseev Dmitry, Laqua Heinrich, Marsen Stefan, Stange Torsten, Braune Harald, Erckmann Volker, Gellert Florian, Oosterbeek Johann Wilhelm, Wenzel Uwe   +8 more
doaj   +1 more source

Evolution of the polarization of the optical afterglow of the gamma-ray burst GRB 030329

, 2003
We report 31 polarimetric observations of the afterglow of GRB 030329 with high signal-to-noise and high sampling frequency. We establish the polarization light curve, detect sustained polarization at the percent level, and find significant variability ...
Barnbantner, O., Grav, T., Greiner, J., Hartmann, D. H., Henden, A., Hjorth, J., Jehin, E., Kaas, A. A., Kaufer, A., Klose, S., Kouveliotou, C., Palazzi, E., Park, H. -S., Pedersen, H., Rau, A., Reimer, O., Reinsch, K., Ries, C., Sari, R., Schmid, H. M., Stecklum, B., Straubmeier, C., Tovmassian, G., Wijers, R. A. M. J., Williams, G., Zharikov, S.   +25 more
core   +1 more source

Modelling of ICRH slow wave propagation and absorption in Wendelstein 7-X stellarator

Nuclear Fusion
The propagation and absorption of the slow waves (SWs) in the three-ion plasma of the Wendelstein 7-X stellarator have been investigated by ray tracing.
D. Grekov, C. Albert, Yu. Turkin, Yu. Volkova   +3 more
doaj   +1 more source

Advanced electron cyclotron heating and current drive experiments on the stellarator Wendelstein 7-X

EPJ Web of Conferences, 2017
During the first operational phase (OP 1.1) of Wendelstein 7-X (W7-X) electron cyclotron resonance heating (ECRH) was the exclusive heating method and provided plasma start-up, wall conditioning, heating and current drive. Six gyrotrons were commissioned
Stange Torsten, Laqua Heinrich Peter, Beurskens Marc, Bosch Hans-Stephan, Bozhenkov Sergey, Brakel Rudolf, Braune Harald, Brunner Kai Jakob, Cappa Alvaro, Dinklage Andreas, Erckmann Volker, Fuchert Golo, Gantenbein Gerd, Gellert Florian, Grulke Olaf, Hartmann Dirk, Hirsch Matthias, Höfel Udo, Kasparek Walter, Knauer Jens, Langenberg Andreas, Marsen Stefan, Marushchenko Nikolai, Moseev Dmitry, Pablant Novomir, Pasch Ekkehard, Rahbarnia Kian, Mora Humberto Trimino, Tsujimura Toru, Turkin Yuriy, Wauters Tom, Wolf Robert   +31 more
doaj   +1 more source

Vertical supports of the PV Wendelstein 7-X [PDF]

, 2009
Capriccioli, A., Cardella, A., Friedrich, P., Koppe, T., Missal, B., Schrader, M.   +5 more
core   +1 more source

Comparative Analysis of the public discourse about fusion and nuclear energy before and after Fukushima: WP12-SER-ACIF-1 Final Report [PDF]

, 2013
This report presents a comparative analysis of media coverage of fusion and fission energy before and after the accident in the nuclear reactors of Fukushima, Japan.
Horta, Ana, Oliveira, Carla, Pereira, Sérgio, Schmidt, Luísa   +3 more
core  

First experimental observation of zonal flows in the optimized stellarator Wendelstein 7-X

Physical Review Research
In this work, we present the first experimental evidence of the presence of zonal flow (ZF) structures in the optimized stellarator Wendelstein 7-X.
D. Carralero, T. Estrada, J. M. García-Regaña, E. Sánchez, T. Windisch, A. Alonso, E. Maragkoudakis, C. Brandt, K. J. Brunner, C. Gallego-Castillo, P. Kornejew, K. Parks, K. Rahbarnia, H. Thienpondt   +13 more
doaj   +1 more source

Impurity leakage mechanisms in the Wendelstein 7-X island divertor under friction-dominated conditions

Nuclear Fusion
The EMC3-Eirene code was used to study the main impurity leakage mechanism for the island divertor in the standard magnetic field configuration. It was found that under experimentally accessible plasma scenarios in the last experimental campaign, the ...
V.R. Winters, F. Reimold, Y. Feng, V. Perseo, M. Beurskens, S. Bozhenkov, K.J. Brunner, G. Fuchert, R. Koenig, J. Knauer, M. Krychowiak, E. Pasch, E. Scott, D. Zhang, the W7-X Team   +14 more
doaj   +1 more source