@article{oai:repo.qst.go.jp:00049418,
 author = {Nishimori, Nobuyuki and Nagai, Ryoji and Sawamura, Masaru and Hajima, Ryoichi and 西森 信行 and 永井 良治 and 沢村 勝 and 羽島 良一},
 issue = {1},
 journal = {Particles},
 month = {Jul},
 note = {We have developed a photocathode dc gun for a compact Smith-Purcell free-electron laser in the terahertz wavelength region. The gun system consists of an alkali antimonide photocathode preparation chamber, a dc gun with a 250 kV-50 mA Cockcroft-Walton high-voltage power supply, and a downstream beamline with a water-cooled beam dump to accommodate a beam power of 5 kW. We fabricated a Cs3Sb photocathode with quantum efficiency of 5.8% at a wavelength of 532 nm and generated a 150 keV beam with current of up to 4.3 mA with a 500 mW laser. A vacuum chamber for the Smith-Purcell free-electron laser has been installed in the downstream beamline. We describe the present status of our work.},
 title = {Development of a multialkali photocathode dc gun for a Smith-Purcell terahertz free-electron laser},
 volume = {1},
 year = {2018}
}