TY - GEN
T1 - DC photoemission gun upgrade at the compact ERL
AU - Nishimori, N.
AU - Hajima, R.
AU - Nagai, R.
AU - Mori, M.
AU - Yamamoto, M.
AU - Honda, Y.
AU - Miyajima, T.
AU - Uchiyama, T.
N1 - Publisher Copyright:
Copyright © 2016 CC-BY-3.0 and by the respective authors.
PY - 2016
Y1 - 2016
N2 - We have developed a DC photoemission gun at the compact ERL (cERL) at KEK for future energy recovery linac light sources and high repetition rate X-ray FELs. The cERL gun has stably provided beam for ERL commissioning and laser Compton scattering experiments since April 2013. The operational voltage has however been limited to 390 kV due to failures of two segments out of the full ten segmented ceramics. In order to recover 500 kV operation, we installed an additional two segmented ceramics on the existing ceramics during summer shutdown in 2015. We performed high voltage conditioning up to 548 kV and holding test at 500 kV for more than four hours. With the upgraded gun we demonstrated high current operation up to 1 mA at 390 kV as well as high voltage operation at 450 kV at the cERL.
AB - We have developed a DC photoemission gun at the compact ERL (cERL) at KEK for future energy recovery linac light sources and high repetition rate X-ray FELs. The cERL gun has stably provided beam for ERL commissioning and laser Compton scattering experiments since April 2013. The operational voltage has however been limited to 390 kV due to failures of two segments out of the full ten segmented ceramics. In order to recover 500 kV operation, we installed an additional two segmented ceramics on the existing ceramics during summer shutdown in 2015. We performed high voltage conditioning up to 548 kV and holding test at 500 kV for more than four hours. With the upgraded gun we demonstrated high current operation up to 1 mA at 390 kV as well as high voltage operation at 450 kV at the cERL.
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M3 - Conference contribution
AN - SCOPUS:85015270080
T3 - IPAC 2016 - Proceedings of the 7th International Particle Accelerator Conference
SP - 3944
EP - 3946
BT - IPAC 2016 - Proceedings of the 7th International Particle Accelerator Conference
PB - Joint Accelerator Conferences Website (JACoW)
T2 - 7th International Particle Accelerator Conference, IPAC 2016
Y2 - 8 May 2016 through 13 May 2016
ER -