@article{oai:nagoya.repo.nii.ac.jp:00012307,
 author = {Nagai, Ryoji and Hajima, Ryoichi and Nishimori, Nobuyuki and Muto, Toshiya and Yamamoto, Masahiro and Honda, Yosuke and Miyajima, Tsukasa and Iijima, Hokuto and Kuriki, Masao and Kuwahara, Makoto and Okumi, Shoji and Nakanishi, Tsutomu},
 issue = {3},
 journal = {REVIEW OF SCIENTIFIC INSTRUMENTS},
 month = {Mar},
 note = {A high-voltage dc photocathode electron gun was successfully conditioned up to a voltage of 550 kV and a long-time holding test for 8 h was demonstrated at an acceleration voltage of 500 kV. The dc photocathode electron gun is designed for future light sources based on energy-recovery linac and consists of a Cockcroft–Walton generator, a segmented cylindrical ceramic insulator, guard-ring electrodes, a support-rod electrode, a vacuum chamber, and a pressurized insulating gas tank. The segmented cylindrical ceramic insulator and the guard-ring electrodes were utilized to prevent any damage to the insulator from electrons emitted by the support-rod electrode.},
 pages = {033304--033304},
 title = {High-voltage testing of a 500-kV dc photocathode electron gun},
 volume = {81},
 year = {2010}
}