NDLI: Secondary electron emission from alumina RF windows

Content Provider	IEEE Xplore Digital Library
Author	Michizono, S.
Copyright Year	1994
Abstract	The development of alumina RF windows for use at the output section of high-power RF sources is an important issue for accelerators. The breakdown of RF windows is caused by 1. the multipactor effect (electron multiplication on the surface) and/or 2. the discharge of accumulated charges (due to the multipactor effect). Measurements of secondary electron emission (SEE) and surface charging were carried out to determine the durability of various alumina ceramics in this application. Since excessive surface heating takes place during surface discharge, SEE yields at high temperature were also measured. The results indicate that SEE yields become lower at high temperature, and that higher purity alumina ceramics show higher SEE yields. High-power tests using a resonant ring were conducted in order to observe surface charging and electron accumulation. Higher purity alumina ceramics showed superior performance in the high-power tests, probably due to lower surface charging.
Sponsorship	National Natural Science Foundation of China (NSFC) Region Centre Ville de Tours Conseil General D'Indre et Loire ABB IEEE Sandia National Laboratories TOSHIBA
File Size	1561318
File Format	PDF
ISSN	10709878
Volume Number	14
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Electron emission Radio frequency Surface charging Surface discharges Ceramics Temperature measurement Testing Electric breakdown Fault location Heating
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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Secondary Electron Emission from Alumina RF Windows

Breakdown of alumina RF windows

Surface breakdown phenomena in alumina rf windows

Secondary electron emission and surface charging evaluation of alumina ceramics and sapphire

Secondary electron emission and surface charging from alumina at high temperature

Surface charging by UV irradiation at the alumina RF window

Annealing effects on breakdown threshold of RF windows

Secondary electron emission on alumina output windows with longitudinal RF electric field

Impulse surface flashover development associated with transient charging by explosive electron emission in vacuum

Secondary electron emission from alumina RF windows

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Secondary Electron Emission from Alumina RF Windows

Breakdown of alumina RF windows

Surface breakdown phenomena in alumina rf windows

Secondary electron emission and surface charging evaluation of alumina ceramics and sapphire

Secondary electron emission and surface charging from alumina at high temperature

Surface charging by UV irradiation at the alumina RF window

Annealing effects on breakdown threshold of RF windows

Secondary electron emission on alumina output windows with longitudinal RF electric field

Impulse surface flashover development associated with transient charging by explosive electron emission in vacuum

Secondary electron emission from alumina RF windows