Search Results - "Höfel, Udo"

ECE Diagnostic for the initial Operation of Wendelstein 7-X by Hirsch, Matthias, Höfel, Udo, Oosterbeek, Johan Willem, Chaudhary, Neha, Geiger, Joachim, Hartfuss, Hans-Jürgen, Kasparek, Walter, Marushchenko, Nikolai, van Milligen, Boudewijn, Plaum, Burkhard, Stange, Torsten, Svensson, Jakob, Tsuchiya, Hayato, Wagner, Dietmar, McWeir, Gavin, Wolf, Robert

“…The ECE diagnostic at W7-X in its standard mode of operation measures in X2 mode polarization with a 32 channel radiometer in the frequency band around 140 GHz…”
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Assessment of ECH stray radiation levels at the W7-X Michelson Interferometer and Profile Reflectometer by Oosterbeek, Johan. W., Chaudhary, Neha, Hirsch, Matthias, Höfel, Udo, Wolf, Robert. C.

“…Electron Cyclotron Heating and Electron Cyclotron Current Drive are key components for heating and control in magnetically confined fusion plasmas. The high…”
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Advanced electron cyclotron heating and current drive experiments on the stellarator Wendelstein 7-X by 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

“…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…”
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Investigation of Optically Grey Electron Cyclotron Harmonics in Wendelstein 7-X by Chaudhary, Neha, Oosterbeek, Johan W., Hirsch, Matthias, Höfel, Udo, Wolf, Robert C.

“…For a magnetic field of 2.5T, the electron cyclotron harmonics are spectrally well separated in W7-X as it has a large aspect ratio. Because of this advantage…”
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Biot-Savart routines with minimal floating point error by Schilling, Jonathan, Svensson, Jakob, Höfel, Udo, Geiger, Joachim, Thomsen, Henning

“…A set of routines to compute the magnetic vector potential and magnetic field of two types of current carriers is presented. The (infinitely thin) current…”
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Bayesian Analysis of Electron Cyclotron Emission Measurements at Wendelstein 7-X by Höfel, Udo

“…Electron cyclotron emission spectroscopy (ECE) is a standard diagnostic technique on the optimized stellarator Wendelstein 7-X (W7-X) that can record data with…”
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Accelerated Bayesian inference of plasma profiles with self-consistent MHD equilibria at W7-X via neural networks by Merlo, Andrea, Pavone, Andrea, Böckenhoff, Daniel, Pasch, Ekkehard, Fuchert, Golo, Brunner, Kai Jakob, Rahbarnia, Kian, Schilling, Jonathan, Höfel, Udo, Kwak, Sehyun, Svensson, Jakob, Pedersen, Thomas Sunn, team, the W7-X

“…High-$\langle \beta \rangle$ operations require a fast and robust inference of plasma parameters with a self-consistent MHD equilibrium. Precalculated MHD…”
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Proof of concept of a fast surrogate model of the VMEC code via neural networks in Wendelstein 7-X scenarios by Merlo, Andrea, Böckenhoff, Daniel, Schilling, Jonathan, Höfel, Udo, Kwak, Sehyun, Svensson, Jakob, Pavone, Andrea, Lazerson, Samuel Aaron, Pedersen, Thomas Sunn, Team, W7-X

“…Nucl. Fusion 61 (2021) 096039 In magnetic confinement fusion research, the achievement of high plasma pressure is key to reaching the goal of net energy…”
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Quantification of systematic errors in the electron density and temperature measured with Thomson scattering at W7-X by Nelde, Philipp, Fuchert, Golo, Pasch, Ekkehard, Beurskens, Marc N. A, Bozhenkov, Sergey A, Brunner, Kai Jakob, Höfel, Udo, Kwak, Sehyun, Meineke, Jens, Scott, Evan R, Wolf, Robert C, team, W7-X

“…The electron density and temperature profiles measured with Thomson scattering at the stellarator Wendelstein 7-X show features which seem to be unphysical,…”
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