Title :
Thermal emittance measurement design for diamond secondary emission
Author :
Wu, Q. ; Ben-Zvi, I. ; Burrill, A. ; Chang, X. ; Kayran, D. ; Rao, T. ; Smedley, J.
Author_Institution :
BNL, Upton
Abstract :
Thermal emittance is a very important characteristic of cathodes. A carefully designed method of measuring the thermal emittance of secondary emission from diamond is presented. Comparison of possible schemes is carried out by simulation, and the most accessible and accurate method and values are chosen. Systematic errors can be controlled and maintained at small values, and are carefully evaluated. Aberration and limitations of all equipment are taken into account.
Keywords :
diamond; electron beam focusing; electron sources; photocathodes; secondary electron emission; space charge; C; aberration; beam focusing; diamond secondary emission; electron beam; electron source; laser-photocathode gun; space charge effects; thermal emittance measurement design; Acceleration; Anodes; Apertures; Cathodes; Electron emission; Energy measurement; Size measurement; Solenoids; Space charge; Surface emitting lasers;
Conference_Titel :
Particle Accelerator Conference, 2007. PAC. IEEE
Conference_Location :
Albuquerque, NM
Print_ISBN :
978-1-4244-0916-7
DOI :
10.1109/PAC.2007.4441087
