Title :
Lattice and dynamic aperture of the Duke FEL storage ring
Author :
Wu, Y. ; Litvinenko, V.N. ; Madey, J.M.J.
Author_Institution :
Free Electron Laser Lab., Duke Univ., Durham, NC, USA
Abstract :
A low emittance lattice of the Duke FEL (Free Electron Laser) storage ring dedicated to drive UV-VUV FELs is presented. The second order geometrical aberration is compensated to increase the dynamic aperture. The 6-D dynamic aperture study has been performed on this lattice using symplectic tracking codes, which demonstrates a large energy aperture. The influences of higher-order multipoles (HMs), RMS errors and 6.8-m OK-4 undulator on dynamic aperture are studied. The transverse dynamic aperture is mainly limited by HMs in the straight section quadrupoles. For future FEL operations, we have designed a new straight section lattice for a 26-m long FEL undulator. The dynamic aperture for this lattice is discussed
Keywords :
electron accelerators; particle beam diagnostics; storage rings; wigglers; Duke FEL storage ring; Free Electron Laser; OK-4 undulator; RMS errors; UV-VUV FELs; dynamic aperture; higher-order multipoles; second order geometrical aberration; straight section quadrupoles; symplectic tracking codes; transverse dynamic aperture; Apertures; Electron emission; Free electron lasers; Laboratories; Lattices; Magnets; Radio frequency; Ring lasers; Storage rings; Undulators;
Conference_Titel :
Particle Accelerator Conference, 1993., Proceedings of the 1993
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-1203-1
DOI :
10.1109/PAC.1993.308961
