RF Couplers for Normal-Conducting Photoinjector of High-Power CW FEL

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dc.creatorKurennoy, Sergey
dc.creatorSchrage, Dale
dc.creatorWood, Richard
dc.creatorSchultheiss, Tom
dc.creatorRathke, John
dc.creatorYoung, Lloyd
dc.date2004-04-22
dc.date.accessioned2026-07-07T05:51:45Z
dc.date.available2026-07-07T05:51:45Z
dc.descriptionA high-current emittance-compensated RF photoinjector is a key enabling technology for a high-power CW FEL. A preliminary design of a normal-conducting, 2.5-cell pi-mode, 700-MHz CW RF photoinjector that will be built for demonstration purposes, is completed. This photoinjector will be capable of accelerating a 100-mA electron beam (3 nC per bunch at 35 MHz bunch repetition rate) to 2.7 MeV while providing an emittance below 7 mm-mrad at the wiggler. More than 1 MW of RF power will be fed into the photoinjector cavity through two ridge-loaded tapered waveguides. The waveguides are coupled to the cavity by "dog-bone" irises cut in a thick wall. Due to CW operation of the photoinjector, the cooling of the coupler irises is a rather challenging thermal management project. This paper presents results of a detailed electromagnetic modeling of the coupler-cavity system, which has been performed to select the coupler design that minimizes the iris heating due to RF power loss in its walls.
dc.description18 pages, 19 figures. APS Meeting, Denver, CO, May 2004
dc.identifierhttps://arxiv.org/abs/physics/0404109
dc.identifierhttp://arxiv.org/abs/physics/0404109
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/86092
dc.subjectAccelerator Physics
dc.titleRF Couplers for Normal-Conducting Photoinjector of High-Power CW FEL
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