A5041668855- Particle accelerators and beam dynamics
- Magnetic confinement fusion research
- Gyrotron and Vacuum Electronics Research
- Superconducting Materials and Applications
- Particle Accelerators and Free-Electron Lasers
- Fusion materials and technologies
- Plasma Diagnostics and Applications
- Microwave Engineering and Waveguides
- Atomic and Subatomic Physics Research
- Astronomical Observations and Instrumentation
- Astro and Planetary Science
- Material Properties and Applications
- 3D IC and TSV technologies
- Muon and positron interactions and applications
- Gas Dynamics and Kinetic Theory
- Astrophysical Phenomena and Observations
- Technology Assessment and Management
- Advanced Fiber Laser Technologies
- Silicon and Solar Cell Technologies
- Environmental Science and Water Management
- Semiconductor Lasers and Optical Devices
- Electromagnetic Launch and Propulsion Technology
- Nuclear reactor physics and engineering
- Quantum, superfluid, helium dynamics
- Microwave and Dielectric Measurement Techniques
Max Planck Institute for Plasma Physics
2007-2023
Max Planck Society
2005-2018
Max Planck Institute for Plasma Physics - Greifswald
2001-2017
University of Stuttgart
2006
Max Planck Innovation
2005
The Wendelstein 7X (W7-X) stellarator (R = 5.5 m, a 0.55 B < 3.0 T), which at present is being built Max-Planck-Institut für Plasmaphysik, Greifswald, aims demonstrating the inherent steady-state capability of stellarators reactor-relevant plasma parameters. A 10-MW electron cyclotron resonance heating (ECRH) plant with continuous-wave (cw) under construction to meet scientific objectives. physics background different and current drive scenarios presented. expected parameters are calculated...
A Collective Thomson Scattering (CTS) diagnostic is installed at Wendelstein 7-X for ion temperature measurements in the plasma core. The utilizes 140 GHz gyrotrons usually used electron cyclotron resonance heating (ECRH) as a source of probing radiation. CTS uses quasi-optical transmission line covering distance over 40 m. shared between ECRH system and diagnostic. Here we elaborate on design, installation, alignment present first 7-X.
Electron cyclotron resonance heating (ECRH) plays a key role in stellarator research, because it provides net current free plasma start up and toward reactor relevant parameters. ECRH was extensively used investigated the experiments at IPP Garching, i.e., W7-A W7-AS stellarators. These provide solid physics technological basis for 10 MW, CW system, which is under construction superconducting next step W7-X will become operational 2005. We briefly describe some of major specific results on...
Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation V. Erckmann, H. Braune, G. Gantenbein, J. Jelonnek, W. Kasparek, P. Laqua, C. Lechte, N. B. Marushchenko, Michel, Plaum, M. Thumm, Weissgerber, R. Wolf, W7-X ECRH Teams; W7-X: An intriguing pair. AIP Conference Proceedings 12 February 2014; 1580 (1): 542–545. https://doi.org/10.1063/1.4864608 Download citation...
During the last years, electron cyclotron heating (ECH) was proven to be one of most attractive schemes for stellarators because it provides net-current-free plasma startup and heating. Both stellarator Wendelstein 7-X (W7-X), which is under construction at Max-Planck-Institut fu umlr Plasmaphysik, Greifswald, Germany, International Thermonuclear Experimental Reactor (ITER) tokamak, will built in Cadarache, France, equipped with a strong ECH current-drive system. systems are comparable...
For electron cyclotron resonance heating of the stellarator W7-X at IPP Greifswald, a 140 GHz/10 MW cw millimeter wave system is in construction. Two out 12 launchers will employ remote-steering design. This paper describes overall design two launchers, and issues like input coupling structures, manufacturing corrugated waveguides, optimization steering range, integration vacuum windows, mitrebends valves into as well tests prototype parts.
Electron cyclotron resonance heating (ECRH) is the main system for W7-X. A 10-MW ECRH plant with continuous wave (cw) capability under construction to support W7-X operation, which aims at demonstrating steady-state of stellarators reactor-relevant plasma parameters. The consists ten radio-frequency (rf) modules 1 MW power each 140 GHz. rf beams individual gyrotrons are transmitted in common torus via open multibeam mirror lines. losses components transmission were measured both low- and...
During the last years, electron cyclotron heating (ECH) was proven to be one of most attractive schemes for stellarators because it provides net-current-free plasma startup and heating. Both stellarator Wendelstein 7-X (W7-X) ITER tokamak will equipped with a strong ECH current-drive system. ECH&CD systems are comparable in frequency have continuous-wave (CW) capability (140 GHz, 10 MW W7-X 170 26 ITER). The heating- current drive scenarios, which support operation at various magnetic fields...
Electron Cyclotron Resonance Heating (ECRH) is a key component in the heating arsenal for next step fusion devices like W7-X and ITER. These are equipped with superconducting coils designed to operate steady state. ECRH must thus CW-mode large flexibility comply various physics demands such as plasma start-up, current drive, well configurationand MHD - control. The request many different sophisticated applications results growing complexity, which conflict high availability, reliability,...
For electron cyclotron resonance heating of the stellarator W7-X at IPP Greifswald, a 140 GHz/10 MW cw millimeter wave system is in construction. Two out 12 launchers will employ remote-steering design. This paper describes design issues like input coupling structures, manufacturing corrugated waveguides, optimization steering range, integration vacuum windows, mitrebends and valves into launchers, as well tests prototype parts.