First lasingand initial operation ofa circularly polarized optical klystron ok-5 felandavariably polarized distributed optical klystron DOK-1 FEL at DUKE


Journal Article

To improve the capability and performance of its light sources, the Duke FEL lab (DFELL) is upgrading its storage ring based FEL. The existing linearly polarized OK-4 FEL wigglers are being replaced gradually by the next generation OK-5 wigglers capable of producing either linearly or circularly polarized light. In the second phase of this upgrade in 2005, the OK-5 FEL consisting of two wigglers is installed together with the OK-4 FEL in a specially designed magnetic lattice. The circularly polarized OK-5 FEL was first brought to lasing on Aug. 14, 2005. In the following days, the first distributed optical klystron FEL with variable polarization, the DOK-1 FEL, comprised of two horizontal OK-4 wigglers and two circular OK-5 wigglers, was brought to lasing for the first time. In this paper, we report our commissioning experience and initial measurements of both the OK-5 FEL and DOK-1 FEL.

Duke Authors

Cited Authors

  • Wu, YK; Mikhailov, S; Li, J; Popov, V; Vinokurov, NA; Gavrilov, NG; Shevchenko, OA; Vobly, PD; Kulipanov, GN

Published Date

  • December 1, 2005

Published In

  • Proceedings of the 27th International Free Electron Laser Conference, Fel 2005

Start / End Page

  • 407 - 410

Citation Source

  • Scopus