Jochen Linke
(Forschungszentrum Jülich GmbH)
9/8/16, 4:40 PM
F. Plasma Facing Components
Oral
To qualify new plasma facing materials (PFM) and to evaluate the high heat flux performance under ITER or DEMO relevant loading conditions, extensive High Heat Flux (HHF) testing is indispensable. This includes performance tests under cyclic stationary thermal loads and screening of different material candidates under relevant transients such as Edge Localized Modes (ELMs) with high pulse...
Walid Helou
(CEA)
9/8/16, 5:00 PM
B. Plasma Heating and Current Drive
Oral
This paper presents the Radio-Frequency (RF) design of a new type of slow-wave Lower Hybrid Current Drive (LHCD) launcher, based on the Slotted Waveguide Antenna (SWA) concept, which is particularly attractive for the use in future magnetic fusion reactors. When compared to conventional LHCD slow-wave launchers, SWA are less obstructive, allow an “off-port” extension of the launcher and are...
John Jelonnek
(Institute for Pulsed Power and Microwave Technology (IHM))
9/8/16, 5:20 PM
B. Plasma Heating and Current Drive
Oral
Long term options for a steady state DEMO may require the availability of gyrotrons with an operating frequency above 200 GHz together with an RF output power of significantly more than 1 MW and a total gyrotron efficiency higher than 60 %. Fast frequency tuning in steps of around 2-3 GHz will be needed for control of plasma stability. Multi-purpose operation at leaps of about 30 – 40 GHz...
Riccardo Ragona
(Laboratory for Plasma Physics)
9/8/16, 5:40 PM
B. Plasma Heating and Current Drive
Oral
The main advantages of Ion Cyclotron Resonance Heating and Current Drive (ICRH&CD) are its ability to achieve power deposition in the centre of the plasma column without any density limit along with direct heating of plasma ions. The challenge is then to couple large amount of power through the plasma boundary, where an evanesence layer has to be crossed, without exceeding the voltage standoff...
