Accession Number : ADA303434

Title :   Investigation of a Relativistic Klystron Scheme.

Descriptive Note : Final rept. 1 Apr 91-31 Oct 95,

Corporate Author : TEXAS TECH UNIV LUBBOCK DEPT OF ELECTRICAL ENGINEERING

Personal Author(s) : Zieher, Klaus W.

PDF Url : ADA303434

Report Date : 22 DEC 1995

Pagination or Media Count : 31

Abstract : A scheme to generate microwave power with a high conversion efficiency has been investigated theoretically. In the scheme microwave power at 10 GHz is generated by conversion of electron energy of a relativistic electron beam. Periodic deflection of the electron beam is used to yield time of flight bunching due to modulation of the length of the trajectory rather than modulation of the speed of the electrons. Numerical simulation predicted a conversion efficiency for a finite emittance beam at an electron energy of 1 MeV of about 55%. For budgetary reasons the design value for an experimental investigation was reduced to 100 keV electron energy. The predicted conversion efficiency did not change significantly. An experimental set up was built. Measurements on parts of the system were performed. A quality factor of about 6400 was measured in a single cell cavity resonator compared to the theoretical value of about 8800. A beam current of about 100 mA was indicated at an extraction voltage of 3.5 keV in a preliminary measurement. The theoretical and experimental investigation is continued as part of the MURI activities.

Descriptors :   *KLYSTRONS, CONVERSION, MATHEMATICAL MODELS, CELLS, NUMERICAL ANALYSIS, EFFICIENCY, VOLTAGE, MICROWAVES, ELECTRON BEAMS, ELECTRON ENERGY, EMITTANCE, QUALITY, TRAJECTORIES, CAVITY RESONATORS, RADIOFREQUENCY POWER, RELATIVITY THEORY.

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE