Modelling Mirror Aberrations in FEL Oscillators Using OPC

P.J.M. van der Slot, J.G. Karssenberg, K.J. Boller

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Abstract

Several high power free-electron lasers (FELs) are currently under design, operational or being upgraded. One central issue is the beam outcoupling and mirror deformation due to absorbed power. Here we present an extension to the OPC code that allows it to model mirror distorions. We use this code to model the high average power vacuum ultra violet FEL oscillator of the 4th generation light source. Both Genesis 1.3 and Medusa are used to calculate the gain provided by the undulator. Our findings indicate that the high gain oscillator is quite resilient to thermal mirror deformation and operation well into the kW range of average power can be expected.
Original languageEnglish
Title of host publication29th International Fee-Electron Laser Conference, FEL07
Subtitle of host publicationBudker INP, Novosibirsk, Aug. 26-31, 2007: Proceedings
EditorsMaksim V. Kuzin, Volker R.W. Schaa
PublisherSocial Science Research Council
Pages207-210
Publication statusPublished - 26 Aug 2008
Event29th International Free-Electron Laser Conference, FEL 2007 - Novosibirsk, Russian Federation
Duration: 26 Aug 200731 Aug 2007
Conference number: 29

Conference

Conference29th International Free-Electron Laser Conference, FEL 2007
Abbreviated titleFEL
Country/TerritoryRussian Federation
CityNovosibirsk
Period26/08/0731/08/07

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