Title :
Upgraded cavities for the positron accumulator ring of the APS
Author :
Kang, Y.W. ; Jiang, X. ; Mangra, D. ; Smith, T.
Author_Institution :
Adv. Photon Source, Argonne Nat. Lab., IL, USA
Abstract :
Upgraded versions of cavities for the APS positron accumulator ring (PAR) have been built and are being tested. Two cavities are in the PAR: a fundamental 9.8-MHz cavity and a twelfth harmonic 117.3-MHz cavity. Both cavities have been manufactured for higher voltage operation with improved Q-factors, reliability, and tuning capability. Both cavities employ current-controlled ferrite tuners for control of the resonant frequency. The harmonic cavity can be operated in either a pulsed mode or a CW mode. The RF properties of the cavities are presented
Keywords :
Q-factor; accelerator RF systems; accelerator cavities; electron accelerators; storage rings; 117.3 MHz; 9.8 MHz; APS; Advanced Photon Source; CW mode; Q-factor; RF cavities; cavities; current-controlled ferrite tuners; fundamental harmonic; positron accumulator ring; pulsed mode; reliability; resonant frequency; tuning; twelfth harmonic; Ferrites; Manufacturing; Positrons; Q factor; Radio frequency; Resonant frequency; Testing; Tuners; Tuning; Voltage;
Conference_Titel :
Particle Accelerator Conference, 1997. Proceedings of the 1997
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-4376-X
DOI :
10.1109/PAC.1997.753067
