CERN Accelerating science

Article
Title	Upgrade of a Photocathode RF Gun at SPring-8
Author(s)	Taniuchi, Tsutomu ; Asaka, Takao ; Dewa, Hideki ; Hanaki, Hirofumi ; Kobayashi, Toshiaki ; Mizuno, Akihiko ; Suzuki, Shinsuke ; Tomizawa, Hiromitsu ; Yanagida, Kenichi
Affiliation	(JASRI-SPring-8, Hyogo UTNL, Ibaraki)
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. TUPOS18
Subject category	Accelerators and Storage Rings
Abstract	The test bench of a photocathode RF gun at SPring-8 has been upgraded. The radiation shielded area was expanded about 3 times larger and the maximum beam energy was increased from up to 30 MeV including a 3-m long accelerating tube. The clean room for the drive laser system was newly built and the performance and reliability of the laser was improved. After the construction of the shielded room and set up of the components, the RF conditioning of the waveguides, the gun cavity and the accelerating tube was successfully performed and the beam characteristics such as the emittance and bunch length were measured. In this presentation, further plans for the improvement of the beam quality will also be presented.