CERN Accelerating science

Article
Title	Misalingment Tolerance of a Hole-Coupling Optical Resonator for JAERI ERL-FEL
Author(s)	Nagai, Ryoji ; Hajima, Ryoichi ; Kikuzawa, Nobuhiro ; John Minehara, Eisuke ; Nishimori, Nobuyuki ; Sawamura, Masaru
Affiliation	(JAERI/FEL, Ibaraki-ken)
Publication	2004
In:	26th International Free Electron Laser Conference and 11th FEL User Workshop 2004, Trieste, Italy, 29 Aug - 3 Sep 2004, pp.e-proc. THPOS22
Subject category	Accelerators and Storage Rings
Abstract	The misalignment tolerance of a hole-coupling optical resonator for the JAERI ERL-FEL is estimated with a wavelength of 22 μm by a Fox-Li procedure simulation code. The output power stability depends on the misalignment tolerance. It is found that the misalignment tolerance of the hole-coupling mirror is less than the non-coupling mirror and the offset of the non-coupling mirror is compensable tilting the mirror.