Quasi-traveling Wave Side Couple RF Gun Commissioning for SuperKEKB

Takuya Natsui, Yujiro Ogawa, Mitsuhiro Yoshida, Xiangyu Zhou, Petit-Jean-Genaz, Christine (Ed.), Arduini, Gianluigi (Ed.), Michel, Peter (Ed.), Schaa, Volker RW (Ed.)
2014
We are developing a new RF gun for SuperKEKB. High-charge low-emittance electron and positron beams are required for SuperKEKB. We will generate 7.0 GeV electron beam at 5 nC 20 mm-mrad by J-linac. In this linac, a photo cathode S-band RF gun will be used as the electron beam source. For this reason, we are developing an advanced RF gun. New RF gun which has two side coupled standing wave field is developed. We call it quasi traveling wave side couple RF gun. This gun has a strong focusing
more » ... at the cathode and the acceleration field distribution also has a focusing effect. Beam commissioning has been started with the new RF gun. I will report the result of beam commissioning.
doi:10.18429/jacow-ipac2014-mopri033 fatcat:osu6q5zhj5gdpnm5kiohpyepzu