Relativistic multiwave Cerenkov generator
Abstract
The design and operation of a multiwave Cerenkov generator using a relativistic electron beam are reported. The device comprises a 3-cm-radius tubular graphite cathode fed with a 1-microsec 1-2.5-MW pulse from a Marx generator; a 5.6-cm-radius anode; an increasing 14-32-kG magnetic field; a 3.4-cm-aperture-radius graphite collimating iris; a stainless-steel semitoroidal-iris-loaded slow-wave structure of maximum length 48.6 cm, inside radius 4.2 cm, iris aperture radius 3.0 cm, iris minor radius 3 mm, and period 1.5 cm; a stainless-steel cone collector; and a vacuum-tight 60-cm-radius window. At 2.5 MV and 21 kG, output power at wavelength 3.15 + or - 0.1 cm is measured as about 5 GW, with baseline pulse length 30-50 nsec and efficiency up to about 10 percent.
- Publication:
-
Pisma v Zhurnal Tekhnischeskoi Fiziki
- Pub Date:
- November 1983
- Bibcode:
- 1983PZhTF...9.1385B
- Keywords:
-
- Cerenkov Radiation;
- Microwaves;
- Relativistic Electron Beams;
- Waveguides;
- Power Efficiency;
- Radiation Distribution;
- Electronics and Electrical Engineering