@inproceedings{oai:repo.qst.go.jp:00054951,
 author = {山本将博 and 西森, 信行 and 宮島司 and 本田洋介 and 羽島, 良一 and 西森 信行 and 羽島 良一},
 book = {第15回日本加速器学会年会論文集},
 month = {Jan},
 note = {The compact-ERL (cERL), which has been developed as a next generation radiation light accelerator in KEK, has
changed its policy in 2016, and thereafter, the research and development of the accelerator as an industrial application has
been progressed, but the long-term stable supply of the low emittance beam of the electron gun remains unchanged and
is one of the most important items. From June 2017, we started operation with accelerating voltage 500 kV with electron
gun test mode operation, then 500 keV beam was supplied in cERL operation in March and June 2018. As a result,
we succeeded in maintaining the acceleration voltage of 500 kV without causing discharge even for 369 hours or more.
From the experience of the operation of the electron gun there is a possibility that a very slow conditioning effect may
be obtained even during high voltage operation. It is presumed that stable operation itself contributes to making a state
where discharge is less likely to occur. We report on the background and current problems that the state of acceleration
DC voltage of 500 kV can be maintained for a long time stably},
 title = {compact-ERL DC電子銃の500 kV長期安定運転},
 year = {2019}
}