PRODUCTION ENGINEERING MEASURE FOR A PHASE II SUPER POWER HYDROGEN THYRATRON TUBE.
Abstract
During the quarterly periods covered by this report, the Phase II test modulator was completely assembled and initial operating difficulties evident during this time were overcome. As a result, the program which had been delayed by lack of this test facility was finally able to proceed and tests and evaluation of three prospective pre-production tubes were carried out. These tests show that the voltage and power capability of the original design 'A' of the 8301/KU275 tube may have limitations at the level prescribed in Specification SCL-7001/60. At a repetition rate of 4000 pps, maximum attainable power was 128 KW at epy=40 KV, Ib=6.4 Adc. Evaluation of the test material leads to the conclusion that this limited performance is primarily due to insufficient recovery and relatively poor hold-off in the discharge gaps which could be improved by changing the grid structures. No evidence was found of detrimental thermal effects at, or mechanical failure of, the grids. The program for the continuation of work on this contract is, therefore, aimed at the optimization of the grid structures and improved processing of the tubes during construction and aging. As a back-up program, if operation at full specified power and voltage cannot be achieved with thiese improvements in design 'A', the merits of adding a third gap to this design will be investigated. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 06, 1965
- Accession Number
- AD0629287
Entities
People
- H. E. Krefft