Accession Number:

AD0613216

Title:

EXPERIMENTS WITH A SYMMETRICAL, GRADIENT-GRID THYRATRON,

Descriptive Note:

Corporate Author:

ARMY ELECTRONICS COMMAND FORT MONMOUTH N J

Personal Author(s):

Report Date:

1965-01-01

Pagination or Media Count:

17.0

Abstract:

A study of the problems associated with the design of high-voltage thyratrons was conducted. The initial device selected for the study is an experimental gradient-grid thyratron that has a symmetrical stacking arrangement to achieve highvoltage holdoff. The design consists basically of a series of split, baffled, cavity grids. The purpose of the cavity is to permit sufficient length on the ceramic spacers to prevent external arcovers. Tests were performed on a 120-kv peak voltage modulator. The modulator consists of a 3.3-microsecond line with a characteristic impedance of 20 ohms, a matched load, and a resonance charging rate of 300 pps. Measurements obtained on a triple-gap structure are discussed. The two-cavity, three-gap geometry is a satisfactory high-voltage structure. Modulator characteristics, such as TAD, delta TAD, minimum E sub bb, and e sub py versus reservoir voltage, were measured. Minimum E sub bb was found to be high. Other characteristics were considered satisfactory. The double cavity permitted operation in air, provided corona from the anode was eliminated. Multiple-gap structures are feasible for operation at voltages in excess of 90 kilovolts. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE