Open AccessRF system of the SPring‐8 storage ring
Author(s) -
Ego Hiroyasu,
Hara Masahiro,
Kawashima Yoshitaka,
Ohashi Yuji,
Ohshima Takashi,
Takashima Takeo
Publication year - 1998
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s0909049597015318
Subject(s) - storage ring , spring (device) , spring 8 , synchrotron radiation , synchrotron light source , cavity wall , coupling (piping) , instability , ring (chemistry) , beam (structure) , water cooling , synchrotron , optics , materials science , electrical impedance , physics , optoelectronics , mechanics , beamline , chemistry , composite material , thermodynamics , quantum mechanics , organic chemistry
Construction of three RF stations in the storage ring of SPring‐8 has been completed. The design concept concentrates on avoiding a coupled‐bunch instability which limits the stored current or makes the synchrotron radiation beam unstable. The cavity is bell‐shaped to reduce the coupling impedance of the higher‐order modes. The cavity dimensions are trimmed systematically to distribute the higher‐order mode frequencies. Each cavity has two movable tuners. The temperature of the cavity cooling water is controlled within 0.02 K and the water flow is kept constant. The construction and commissioning of the SPring‐8 storage ring RF system is reported.