Modelling mirror aberrations in FEL oscillators using OPC

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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
Pages207-210
Number of pages4
Publication statusPublished - 2007
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
CountryRussian Federation
CityNovosibirsk
Period26/08/0731/08/07

Keywords

  • IR-58966

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    van der Slot, P. J. M., Karssenberg, J. G., & Boller, K. J. (2007). Modelling mirror aberrations in FEL oscillators using OPC. 207-210. Paper presented at 29th International Free-Electron Laser Conference, FEL 2007, Novosibirsk, Russian Federation.