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Title: High-power RF Window

Publication Date:
Research Org.:
Asgard Microwave, 6010 E. Alki Avenue, Unit #2, Spokane, WA 99212
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
Report Number(s):
DOE Contract Number:
Type / Phase:
Resource Type:
Technical Report
Country of Publication:
United States
43 PARTICLE ACCELERATORS; 42 ENGINEERING; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; distributed window; waveguide window; high-power window

Citation Formats

Aster, David B. High-power RF Window. United States: N. p., 2007. Web.
Aster, David B. High-power RF Window. United States.
Aster, David B. Tue . "High-power RF Window". United States. doi:.
title = {High-power RF Window},
author = {Aster, David B},
abstractNote = {},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 30 00:00:00 EST 2007},
month = {Tue Jan 30 00:00:00 EST 2007}

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  • The construction of a reheatable high-power ceramic window used with a traveling-wave linear accelerator between the acceleraror waveguide and the source of of power is described. This window consists of a high-purity alumina disk mounted in the common wall between two offset sections of rectangular waveguide. This location removes the ceramic disk from direct electron bombardment, in case this is a problem. O.F.H.C. copper is vacuum-cast around the edge of the disk, which is metailized with titanium hydride. A molybdenum washer is cast in the copper centered on the edge of the disk, which reduces the strain on the copper-ceramicmore » joint during subsequent reheats by restricting the expansion of the copper. After being cast, the metalized disk is machined, then vacuum-checked heated to 500 deg in hydrogen cooled and rechecked for vacuum tighthess. If still vacuumtight, it is hydrogen-furnacebrazed with a silver- copper eutectic in o the waveguide assembly. Windows of this type typically have a voltagestanding-wave ratio (V.S.W.R.) in the range 1.01 to 1.03. One window gave a V.S.W.R. or 1.01 at 2855 megacycles with a V.S.W.R. less than 1.02 for 200 megacycles centered around 2850 megacycies. This type of window was used successfully on four linacs. (auth)« less
  • The 6th Workshop on High Energy Density and High Power RF (RF 2003) was held from June 22 to June 26 at the Coolfont Resort and Conference Center in Berkeley Springs, West Virginia. The Workshop was hosted by the Institute for Research in Electronics and Applied Physics (IREAP) of the University of Maryland, College Park and by the Naval Research Laboratory, Washington DC. As its name implies this was the sixth in a series of biennial workshops devoted to exchanging information and ideas on high power microwave sources and components. The applications addressed included particle accelerators, radar, HPM, space exploration,more » neutron sources and plasma heating and current driven in controlled thermonuclear fusion research. This Final Report includes a brief description of the RF 2003 Workshop and the distribution of the published proceedings.« less