Experimental Study of Diamond Like Carbon (DLC) Coated Electrodes for Pulsed High Gradient Electron Gun

Autor:	Paraliev, M., Gough, C., Ivkovic, S., Pimpec, F. Le
Rok vydání:	2010
Předmět:	Physics - Accelerator Physics
Druh dokumentu:	Working Paper
DOI:	10.1109/IPMHVC.2010.5958444
Popis:	For the SwissFEL Free Electron Laser project at the Paul Scherrer Institute, a pulsed High Gradient (HG) electron gun was used to study low emittance electron sources. Different metals and surface treatments for the cathode and anode were studied for their HG suitability. Diamond Like Carbon (DLC) coatings are found to perform exceptionally well for vacuum gap insulation. A set of DLC coated electrodes with different coating parameters were tested for both vacuum breakdown and photo electron emission. Surface electric fields over 250MV/m (350 - 400kV, pulsed) were achieved without breakdown. From the same surface, it was possible to photo-emit an electron beam at gradients up to 150MV/m. The test setup and the experimental results are presented Comment: 4 pages, 14 figures, IPMHVC 2010 : IEEE International Power Modulator and High Voltage Conference
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1006.2001 Zobrazit plný text záznamu View this record from Arxiv