CERN Accelerating science

Article
Title	Beam Property Measurements on the KU-FEL Linac
Author(s)	Masuda, Kai ; Hayakawa, Kazushi ; Kii, Toshiteru ; Murakami, Shio ; Ohgaki, Hideaki ; Yamazaki, Tetsuo ; Yoshikawa, Kiyoshi ; Zen, Heishun
Affiliation	(Kyoto University, Kyoto)
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. TUPOS23
Subject category	Accelerators and Storage Rings
Abstract	An infrared FEL facility is under construction for advanced energy researches [1]. Electron beams of around 30 MeV have been obtained by an S-band 4.5-cell rf gun with a thermionic cathode, and a recently installed 3-m accelerating tube. A 180 degree arc consisting of three bending magnets have been also set up for bunch compression, and beam property measurements are under way. Transverse phase space distributions and resultant emittances have been obtained through the tomographic technique [2] by use of a quadrupole magnet, an alumina phosphor screen and a CCD camera. An OTR screen is being prepared for a higher spatial resolution as well as for longitudinal bunch shape measurements by use of a streak camera of 0.2 psec resolution. Comparison with the start-to-end simulation results [3] will be also presented.