QUASI-OPTICAL GYROKLYSTRON DEVELOPMENT AT THE CENTRE DE RECHERCHES EN PHYSIQUE DES PLASMAS
In the quasi-optical gyrotron, the closed cavity of the "conventional" gyrotron is replaced by an open resonator with large dimension as compared to wavelength. The advantages of the quasi-optical open resonator are: The field patterns in the region where the beam interacts with the EM wave is linearly polarized. If the TEM-10-10 mode is excited, it has also a Gaussian radial profile. The problem of mode selection in a quasi-optical resonator is less severe than in a cavity for several reasons. A quasi-optical resonator has a large bandwidth in frequency. Using a particle trajectory simulation program we have computed numerically the efficiency of a quasi-optical gyrotron. The parameters of the calculation are given. A program to develop an advanced high frequency gyrotron has been started at the Centre de Recherche en Physique des Plasmas aimed towards the development of a gyrotron operating in the 150 GHz frequency range at high power level (>> 200 kW). Long pulse or CW operation is envisaged. A staged program has been set up. An outline of the proposals is provided. Moreover a comprehensive low power microwave test programme has been started.
Bibliographic Reference: 4TH INTERNATIONAL SYMPOSIUM ON HEATING IN TOROIDAL PLASMAS, ROMA (ITALY), MARCH 21-28, 1984 VOL. II, PP. 1437-1443 1478 P., VOL. I AND VOL. II, 1984 WRITE TO MONOTYPIA FRANCHI, ST. LUCIA - VIALE UMBRIA NO. 28, 06012 CITTA DI CASTELLO, PERUGIA (ITALY)
Record Number: 1989124031800 / Last updated on: 1987-01-01
Available languages: en