Title :
Measurements on prototype cavities (352 MHz) for the Advanced Photon Source (APS)
Author :
Bridges, J.F. ; Cook, J.M. ; Kustom, R.L. ; Song, J.J.H.
Author_Institution :
Argonne Nat. Lab., IL, USA
Abstract :
Measurements of the higher order modes of a prototype single-cell 352-MHz cavity for the APS 7-GeV storage ring are presented and discussed. A 352-MHz cylindrical pill-box cavity made of aluminum has been built to test and verify the measurement instruments using the analytically derived resonant frequencies of both the fundamental and higher-order modes. A cavity made from solid copper was built according to dimensions derived from URMEL program runs. The longitudinal and transverse impedances of the first several higher-order modes have been measured using various shaped metal beads.<>
Keywords :
beam handling equipment; storage rings; 352 MHz; 7 GeV; APS; Advanced Photon Source; Al; Cu; URMEL program; analytically derived resonant frequencies; cylindrical pill-box cavity; fundamental; higher order modes; longitudinal impedances; measurement instruments; prototype cavities; shaped metal beads; single-cell; storage ring; transverse impedances; Aluminum; Copper; Frequency measurement; Impedance; Instruments; Prototypes; Resonant frequency; Solids; Storage rings; Testing;
Conference_Titel :
Particle Accelerator Conference, 1991. Accelerator Science and Technology., Conference Record of the 1991 IEEE
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-0135-8
DOI :
10.1109/PAC.1991.164409
