TY - GEN
T1 - Experimental optimization of a reflex triode virtual cathode oscillator
AU - Mankowski, John J.
AU - Chen, Xupeng
AU - Dickens, James C.
AU - Kristiansen, Magne
PY - 2004
Y1 - 2004
N2 - Experimental findings on a high power Reflex Triode Virtual Cathode Oscillator (Vircator) at Texas Tech University are reported. In order to optimize performance, changes to the AK gap distance were made. The AK gap was varied from 0.5 to 1.5 cm. The type of cathode material employed was velvet. Cathode radius was 2.5 cm. The Reflex Triode Vircator is driven by a 350 kV Marx generator with a 60 ns, 20 ohm pulsed forming line. Typical peak input power is 4 GW. The output microwave power is measured in the far-field with a waveguide to coax adapter. Thus far we have observed microwave peak power output as high as 330 MW corresponding to a peak power efficiency of 11 %. In an effort to provide premodulation to the vircator region, reflecting strips were added in the downstream waveguide. This technique has been employed with success by this group with a coaxial Vircator.
AB - Experimental findings on a high power Reflex Triode Virtual Cathode Oscillator (Vircator) at Texas Tech University are reported. In order to optimize performance, changes to the AK gap distance were made. The AK gap was varied from 0.5 to 1.5 cm. The type of cathode material employed was velvet. Cathode radius was 2.5 cm. The Reflex Triode Vircator is driven by a 350 kV Marx generator with a 60 ns, 20 ohm pulsed forming line. Typical peak input power is 4 GW. The output microwave power is measured in the far-field with a waveguide to coax adapter. Thus far we have observed microwave peak power output as high as 330 MW corresponding to a peak power efficiency of 11 %. In an effort to provide premodulation to the vircator region, reflecting strips were added in the downstream waveguide. This technique has been employed with success by this group with a coaxial Vircator.
UR - http://www.scopus.com/inward/record.url?scp=84864231347&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84864231347
SN - 5879110885
SN - 9785879110883
T3 - 15th International Conference on High-Power Particle Beams - Proceedings, BEAMS-2004
SP - 426
EP - 429
BT - 15th International Conference on High-Power Particle Beams - Proceedings, BEAMS-2004
T2 - 15th International Conference on High-Power Particle Beams, BEAMS-2004
Y2 - 18 July 2004 through 23 July 2004
ER -