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Persistent URL http://purl.org/net/epubs/work/48927
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Record Id 48927
Title FEL Scheme with Optical Cavity Round-Trip Frequency at Multiple of Electron Bunch Repetition Rate
Abstract A study is carried out to develop an optimised scheme for a free electron laser operating in the far-infrared, based upon an electron beam delivered from a prototype superconducting linac module [1]. This collaboratively developed module is capable of delivering 123 pC of bunch charge at a repetition rate of 13 MHz, or alternatively, higher bunch charges are achievable at lower repetition rates (200 pC at 4.33 MHz for example). A conventional oscillator-type FEL design is compared with a proposed alternative design; wherein the radiation makes three passes of the optical cavity per electron bunch arrival. For both schemes, the output photon properties are predicted through simulations using Genesis 1.3 in combination with the optics code OPC, and tolerances to mirror alignment are investigated and compared to predictions from theory. The further potential of schemes where the radiation makes multiple passes of the optical cavity per electron bunch arrival is discussed.
Organisation ASTeC , ASTeC-MaRS , CI , STFC
Keywords Physics , Free Electron Laser
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Language English (EN)
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Paper In Conference Proceedings In 30th International Free Electron Laser Conference (FEL 08), Gyeongju, Korea, 24-29 Aug 2008, (2008). FEL08-MOPPH042-FE… Repetition Rate.PDF 2008