A5038357952- Particle accelerators and beam dynamics
- Gyrotron and Vacuum Electronics Research
- Magnetic confinement fusion research
- Particle Accelerators and Free-Electron Lasers
- Superconducting Materials and Applications
- Fusion materials and technologies
- Plasma Diagnostics and Applications
- Atomic and Subatomic Physics Research
- Radiation Effects in Electronics
- Emotional Labor in Professions
- Healthcare professionals’ stress and burnout
- Astro and Planetary Science
- Microwave Engineering and Waveguides
- Solid State Laser Technologies
- Particle Detector Development and Performance
- Low-power high-performance VLSI design
- Nursing education and management
- Nuclear reactor physics and engineering
- Advanced Fiber Laser Technologies
- Ionosphere and magnetosphere dynamics
- Laser-Matter Interactions and Applications
- Advanced Data Storage Technologies
- Photocathodes and Microchannel Plates
- Pulsed Power Technology Applications
Institute for Atomic and Molecular Physics
1992-2003
The 110 GHz and the new 140 gyrotron systems for electron cyclotron resonance heating (ECRH) ECCD on TEXTOR are described results of ECRH experiments with system reported. Central Ohmic plasmas shows presence an internal transport barrier near q = 1. This is confirmed by modulated experiments. A central also indicated in radiatively improved (RI) mode discharges up to two barriers seen during current ramp phase. control sawteeth reported both RI target plasmas.
A free-electron maser (FEM) has been built as a pilot experiment for millimetre-wave source applications on future fusion research devices such ITER, the International Tokamak Experimental Reactor. unique feature of Dutch FEM is possibility to tune frequency over entire range from 130 260 GHz at an output power exceeding 1 MW. In first phase project, so-called inverse set-up used. The electron gun mounted inside high-voltage terminal. beam line was tested successfully with extremely low loss...
A free electron maser (FEM) has been built as a pilot mm-wave source for applications on future fusion research devices such the International Tokamak Experimental Reactor (ITER). unique feature of Dutch FEM is possibility to tune frequency over entire range from 130 260 GHz at an output power exceeding one MW. In first phase project, so-called inverse setup used, where gun mounted inside high-voltage terminal. The beam line was tested successfully with extremely low loss current, lower than...
A free electron maser (FEM) has been built as a mm-wave source for applications on future fusion research devices such ITER, the international tokamak experimental reactor [M. A. Makowski, F. Elio, and D. Loeser, April 97, Proc. 10th Workshop ECE ECRH, EC10, 549-559. World Scientific (1998)]. unique feature of Dutch fusion-FEM is possibility to tune frequency over entire range from 130 260 GHz at an output power exceeding 1 MW. In first phase project, so-called inverse setup used. The gun...
An electron cyclotron resonance heating (ECRH) system has been designed for JET in the framework of enhanced performance project (JET-EP) under European fusion development agreement. Due to financial constraints it decided not implement this project. Nevertheless, design work conducted from April 2000 January 2002 shows a number features that can be relevant preparation future ECRH systems, e.g. ITER. The was foreseen comprise six gyrotrons, 1 MW each, order deliver 5 into plasma (Verhoeven...
An ECRH (Electron Cyclotron Resonance Heating) system has been designed for JET in the framework of Enhanced-Performance project (JET-EP) under European Fusion Development Agreement (EFDA). Due to financial constraints it recently decided not implement this project. Nevertheless, design work conducted from April 2000 January 2002 shows a number features that can be relevant preparation future systems, e.g., ITER.
Preliminary ECW experiments on TEXTOR have been performed using a 110 GHz, /spl sim/350 kW, 200 ms, gyrotron. This system has operating reliably since beginning in 2000. The is now being upgraded to up 1 MW, 10 s at 140 GHz. while operation of the old GHz gyrotron will remain possible mainly for diagnostic purposes. two gyrotrons their own beam forming and polariser units but main part quasi optical transmission line be used both power, including window launcher.