A design is presented of the Electron Cyclotron Resonance Heating system to be used on the Rijnhuizen Tokamak Petula (RTP), which will be dedicated to plasma transport studies.
The RTP‐ECRH facility will use three 60 GHz Varian gyrotrons. Each of the gyrotrons can deliver more than 200 kW of microwave power during pulses up to 100 ms. The output power of each gyrotron is controlled by switching on the anode voltage in two steps. This enables very fast rise times. Modulation of the ECRH power by feedback control using diagnostic signals from the plasma is discussed.
The power will be launched into the RTP plasma both from the low magnetic field side through ports in the equatorial plane and from the high‐field side through top ports. The envisaged launching structures are presented.
First ECRH experiments on RTP are scheduled for 1989.
