WEP098  加速器技術/ビーム診断・制御  8月5日 小ホール 13:00 - 15:00
Development of RFdeflector for KEK-Linac
○井上 彬(総研大),吉田 光宏,夏井 拓也(高エネ研)
○Akira Inoue (SOKENDAI), Mitsuhiro Yoshida, Takuya Natsui (KEK)
The advanced RF electron gun was installed for an electronic source of a high charge and a low emittance in KEK e+/e- Linac, and the sliced bunch monitor is needed to achieve the required emittance for the SuperKEKB injection. In the KEK-Linac, we are monitoring using a fluorescent plate on the beam line. It is possible to measure the projection emittance of the beam in this way, however it is not possible to measure the slice emittance. To develop an electron gun which can be generating a beam of super-low emittance corresponding to SuperKEKB, monitoring of the slice emittance is required. The slice of time direction on a beam can be acquired by measuring the beam sliced with the RFdeflector using a fluorescent plate. RF-deflector performance is square root of RF frequency, has developed a highpowered ones corresponding to 10 GeV beam using X-band frequency at near the end of KEK-Linac. However, because the beam energy is about 10MeV at the RF gun exit, enough resolution is obtained even by low energy. So, we have developed a new low energy RF-deflector using C-band frequency.