FEL2012 - List of Authors (Damminsek, K.)

Paper	Title	Page
MOPD38	Investigation of Non-rectangular RF Pules influence in Emitted Electron Beam of Thermionic RF-gun at the Linac-based THz Facility in Thailand	113
	K. Damminsek, S. Rimjaem Chiang Mai University, Chiang Mai, Thailand
	Funding: Department of Physics and Materials Science at Chiang Mai University, Thailand Center of Excellence in Physics and the Development and Promotion of Science and Technology talents project. An electron gun of a linac based THz source at the Plasma and Beam Physics (PBP) Research facility, Chiang Mai University in Thailand is a 1-1/2 cell S-band standing wave RF cavity with an Os/Ru coating dispenser cathode. The electron current density of a few amperes per square centimeter can be achieved from zero-field thermionic emission using this cathode type at a desired operating temperature. However, Non-Rectangular RF pulse have significant influence on the emitted electron current in a thermionic RF-gun. Numerical and experimental studies of the contribution of the effect have been carried out. Results of the investigation together with a proposed model to improve the performance of the thermionic RF-gun will be presented and discussed in this contribution.

Paper

Title

Page

Investigation of Non-rectangular RF Pules influence in Emitted Electron Beam of Thermionic RF-gun at the Linac-based THz Facility in Thailand

113

K. Damminsek, S. Rimjaem
Chiang Mai University, Chiang Mai, Thailand

Funding: Department of Physics and Materials Science at Chiang Mai University, Thailand Center of Excellence in Physics and the Development and Promotion of Science and Technology talents project.
An electron gun of a linac based THz source at the Plasma and Beam Physics (PBP) Research facility, Chiang Mai University in Thailand is a 1-1/2 cell S-band standing wave RF cavity with an Os/Ru coating dispenser cathode. The electron current density of a few amperes per square centimeter can be achieved from zero-field thermionic emission using this cathode type at a desired operating temperature. However, Non-Rectangular RF pulse have significant influence on the emitted electron current in a thermionic RF-gun. Numerical and experimental studies of the contribution of the effect have been carried out. Results of the investigation together with a proposed model to improve the performance of the thermionic RF-gun will be presented and discussed in this contribution.