DocumentCode
1961084
Title
Photoemission phenomena on CEBAF RF windows at cryogenic temperatures
Author
Powers, T. ; Kneisel, P. ; Vaidya, M.
Author_Institution
Continuous Electron Beam Accel. Facility, Newport News, VA, USA
fYear
1993
fDate
17-20 May 1993
Firstpage
1010
Abstract
This paper reports on the photoemission observed during the tests on a single-cell 1500 MHz niobium cavity with a polycrystalline alumina rf interface window operated at 2 K. The light emission from the window at 2 K was detected using a multi-channel fiber optics/PMT system and recorded with a 100 Ms/sec acquisition system. The spectral composition of two types of discharges has been measured. The results indicate that both broadband and narrow-band emissions are present, depending on the discharge type
Keywords
beam handling equipment; cavity resonators; linear accelerators; niobium; photoemission; 1500 MHz; 2 K; CEBAF RF windows; Nb; broadband emissions; cryogenic temperatures; light emission; multi-channel fiber optics/PMT system; narrow-band emissions; photoemission phenomena; spectral composition; Aluminum oxide; Ceramics; Cryogenics; Electron beams; Niobium; Optical surface waves; Optical waveguides; Photoelectricity; Radio frequency; Temperature;
fLanguage
English
Publisher
ieee
Conference_Titel
Particle Accelerator Conference, 1993., Proceedings of the 1993
Conference_Location
Washington, DC
Print_ISBN
0-7803-1203-1
Type
conf
DOI
10.1109/PAC.1993.308700
Filename
308700
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