Design of a technical complex for ecr heating of a plasma in the L-2 stellarator

The design of a technical complex for experiments on electron-cyclotron heating (ECH) of hydrogen plasma in the L-2 stellarator is presented. For ECH at the first and second harmonics of gyrofrequency two types of gyrotrons with wavelength 10 and 3,6 mm and radiation power 100 and 300 kW at pulse duration 1 and 20 ms respectively are used. For consistent radiation input into plasma a quasioptical channel is employed. As a result during ECH at the first gyrofrequency harmonic an unusual wave with lambda=10 mm through the four mirrors system is introduced into the L-2 upper branch pipe of 60 mm diameter in the form of gaussian wave beam of 55 mm diameter. For the second gyrofrequency harmonic through the three mirrors system SHF-beam with lambda=3,6 mm gets into the branch pipe of 86 mm diameter with dimensions 46x62 mm. In the ECR region its dimensions constitute 40x60 mm. As a switch-lamp high-voltage triode GMI 43 A is employed in the circuit control regime. As a storage a single artificial shaping nonconsistent line with oil filling is used