Installation of new damped cavities at the Photon Factory storage ring.
New damped cavities have been installed in the Photon Factory (PF) storage ring and successfully operated in the last scheduled user run of 1996. The new damped cavity is a simple single-cell cavity with somewhat large beam-duct holes. The part of the beam duct that is attached to the cavity is made of SiC, which works as a microwave absorber and damps the higher-order modes excited in the cavity. Because of its simple structure, the operation of the cavity is very stable and also a high power input of more than 150 kW is possible. No coupled-bunch instabilities due to the new cavity were observed during operation.
Izawa
M
M
Light Source Division, Institute of Materials Structure Science, High Energy Accelerator Research Organization, Oho 1-1, Tsukuba-shi, Ibaraki 305, Japan.
Koseki
T
T
Sakanaka
S
S
Takahashi
T
T
Hass
K
K
Tokumoto
S
S
Kamiya
Y
Y