Accession Number:

AD0263923

Title:

OPTIMIZATION OF RF VOLTAGE AMPLITUDES AND GAP SPACING OF GENERALIZED FLOATING DRIFT-TUBE OSCILLATORS

Descriptive Note:

Corporate Author:

NORWEGIAN DEFENCE RESEARCH ESTABLISHMENT KJELLER

Personal Author(s):

Report Date:

1961-06-01

Pagination or Media Count:

1.0

Abstract:

Research concerns the generalized floating drift-tube oscillator which is a monotron oscillator with an interaction region characterize by a number of narrow gaps separated by drift-tubes. Research was conducted to determine the configurations of gap voltages and drift engths yielding maximum conversion efficiency. The maximum efficiency increases with the length of the interacti n region, but depends very little on the number of drift-tubes. Many different configurations yield efficiencies close to the maximum. The highest calculated efficiency is 69.3 per cent for a six-gap oscillator having a total drift angle of 12 cycles. For very long interaction regions the numerical method failed. For the sake of comparison configurations with equal gap voltages and equal drift lengths are considered, and shown to yield small-signal electronic conductances close to the maxima, whereas the efficiencies are considerably lower than those associated with the optimum configurations. For a special case 6 gaps an equivalent continuous RF field distribution was investigated. The efficiency is only slightly different. Author

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Distribution Statement:

APPROVED FOR PUBLIC RELEASE