Title :
RF breakdown studies in X-band klystron cavities
Author :
Xu, X. ; Callin, R.S. ; Fowkes, W.R. ; Menegat, A. ; Scheitrum, G.P. ; Whittum, D.H.
Author_Institution :
Linear Accel. Center, Stanford Univ., CA, USA
Abstract :
RF breakdown studies are presently being carried out at SLAC with klystron cavities in a traveling wave resonator (TWR). Different kinds of fabrication methods and several kinds of semiconducting and insulating coatings have been applied to X-Band TM010 cavities. RF breakdown thresholds up to 250 MV/m have been obtained. Dark current levels were found to be depressed in TiN-coated and single-point diamond turned cavities. A new TM020 cavity with demountable electrodes has been designed and will be used to test a variety of materials, coatings, and processes. Recent tests of klystron output windows at 119 MW are also presented in this paper
Keywords :
accelerator cavities; dark conductivity; electric breakdown; electron accelerators; klystrons; linear colliders; RF breakdown studies; SLAC; TiN-coated cavities; X-Band TM010 cavities; X-band klystron cavities; dark current levels; demountable electrodes; fabrication methods; klystron output windows; single-point diamond turned cavities; traveling wave resonator; Coatings; Dark current; Electric breakdown; Electrodes; Fabrication; Insulation; Klystrons; Materials testing; Radio frequency; Semiconductivity;
Conference_Titel :
Particle Accelerator Conference, 1997. Proceedings of the 1997
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-4376-X
DOI :
10.1109/PAC.1997.753103
