Zobrazeno 1 - 10
of 65
pro vyhledávání: '"Plaum Burkhard"'
Publikováno v:
EPJ Web of Conferences, Vol 277, p 01005 (2023)
A dedicated optical system is designed for the breakdown of the first ITER plasma, when the machine will not be equipped with the equatorial ECRH-launcher. Seven beams from the upper launcher will be transmitted via several in-vessel mirrors through
Externí odkaz:
https://doaj.org/article/3ebcc42dc2004c4d9a4450b778d0ca9b
Autor:
Schubert Martin, Stober Joerg, Herrmann Albrecht, Grigore Eduard, Kasparek Walter, Lechte Carsten, Monaco Francesco, Petzold Bernhard, Plaum Burkhard, Poli Emanuele, Ruset Cristian, Vorbrugg Stefan, Wagner Dietmar
Publikováno v:
EPJ Web of Conferences, Vol 277, p 02008 (2023)
Reflecting gratings have been installed in the vacuum vessel of ASDEX Upgrade for all beamlines of the electron cyclotron resonance heating system. Potentially unabsorbed millimetre wave power after the first pass through the plasma is redirected tow
Externí odkaz:
https://doaj.org/article/71ee14641bd247248efbc105912c7a2c
Autor:
Lechte Carsten, Kasparek Walter, Plaum Burkhard, Leuterer Fritz, Schubert Martin, Stober Jörg, Wagner Dietmar
Publikováno v:
EPJ Web of Conferences, Vol 203, p 04010 (2019)
High power mm waves for fusion plasma heating need to be elliptically polarised to ensure good absorption in the plasma. In some scenarios, electron cyclotron resonance heating (ECRH) at higher harmonics (X3 and O2) is used, but this has significant
Externí odkaz:
https://doaj.org/article/6abea8f9fd1d49288805d8873e08cb43
Autor:
Zach Alexander, Kasparek Walter, Lechte Carsten, Plaum Burkhard, Monaco Francesco, Schütz Harald, Stober Jörg, Idei Hiroshi, Hirth Thomas
Publikováno v:
EPJ Web of Conferences, Vol 203, p 04018 (2019)
Transmission of high-power millimeter waves for ECRH is often realised with oversized corrugated circular waveguides. Coupling from the gyrotron source to the waveguide is typically done via matching mirrors in free space. Small alignment errors of t
Externí odkaz:
https://doaj.org/article/f8463b858bf74e22ab509df1c9596e3c
Autor:
Schubert Martin, Plaum Burkhard, Stober Jörg, Herrmann Albrecht, Kasparek Walter, Lechte Carsten, Leuterer Fritz, Monaco Francesco, Petzold Bernhard, Poli Emanuele, Vorbrugg Stefan, Wagner Dietmar
Publikováno v:
EPJ Web of Conferences, Vol 203, p 02009 (2019)
The electron cyclotron resonance heating system at ASDEX Upgrade (AUG) is currently being extended to eight similar Gyrotrons in total. Each Gyrotron operates at 105 and 140 GHz and is designed for up to 1 MW millimetre wave output power. A substanti
Externí odkaz:
https://doaj.org/article/22d667cff7474dac801df0a64d52a841
Autor:
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
Publikováno v:
EPJ Web of Conferences, Vol 203, p 03007 (2019)
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 for central magnetic field 2.5T. The radiometer is calibrated by a noise source and the ov
Externí odkaz:
https://doaj.org/article/41320716b32841edba05e42d261ac664
Publikováno v:
EPJ Web of Conferences, Vol 203, p 04012 (2019)
An existing framework for the design of reflection gratings was reworked. It takes the astigmatic complex beam parameters and the orientations of the beam axes of the incident and reflected beams as input and synthesizes a grating, which transforms t
Externí odkaz:
https://doaj.org/article/b48b695ac7914c1dbb28030c5adb6112
Autor:
Plaum Burkhard
Publikováno v:
EPJ Web of Conferences, Vol 147, p 04001 (2017)
The contributions on technology are summarized.
Externí odkaz:
https://doaj.org/article/2fc10b9ad4fb4435ae3d192873c8424a
Autor:
Schubert Martin, Stober Jörg, Herrmann Albrecht, Kasparek Walter, Leuterer Fritz, Monaco Francesco, Petzold Bernhard, Plaum Burkhard, Vorbrugg Stefan, Wagner Dietmar, Zohm Hartmut
Publikováno v:
EPJ Web of Conferences, Vol 157, p 03047 (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. The syst
Externí odkaz:
https://doaj.org/article/363d3a982cad4e80821240ce5b002c57
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