DID YOU KNOW? DTIC has over 3.5 million final reports on DoD funded research, development, test, and evaluation activities available to our registered users. Click HERE
to register or log in.
Nanosecond Pulser Thyratrons.
Interim rept. no. 2, 15 Jan-30 Jul 81,
EG AND G INC SALEM MA ELECTRONIC COMPONENTS DIV
Pagination or Media Count:
The fundamental feasibility of using thyratrons for 1 ns turn-on of certain millimeter wave devices has been demonstrated, in that a voltage rise rate of 6kvns has been achieved across a pure approximately 60 pF load. Use of ferrite bead saturable reactors enabled this to be accomplished at a thyratron pressure compatible with both reliable voltage holdoff and sufficiently short recovery time for a 20 kHz prr. The thyratron used was a 3-inch diameter HY-3013 modified for low inductance and designated HY-3013L. In particular this result shows that HY-3013L will meet the recently reduced EIO triggering requirements or approx. 3 kv, even though the ratio of load voltage to thyratron voltage will decrease to only 0.5-1.0 when the pulse width is reduced to 4 ns FWHM. the exact value of this ratio will depend on the type of circuit employed. Operation at higher voltages will require a several-fold decrease in thyratron recovery time. Substantial reduction in thyratron jitter is also needed, and a reduction in the power required to trigger the thyratron would be desirable. Thyratrons based on the HY-3013L, but modified to achieve these goals, are being designed. Author
APPROVED FOR PUBLIC RELEASE