Title :
HOM power propagation and attenuation in PEP-II B-factory
Author :
Lin, Xintian E. ; Ng, C.K. ; Ko, K.
Author_Institution :
Linear Accel. Center, Stanford Univ., CA, USA
Abstract :
Most of the higher-order-mode (HOM) power that propagates in the PEP-II rings is generated in the RF cavities but its content in terms of TE and TM components has not been accurately determined. For purpose of shielding beamline components such as bellows and BPMs from TE power penetration and determining the heating on the cavity HOM absorber, this HOM power content and its distribution profile around the rings are needed. This paper calculates the TE and TM contributions of the RF cavities to the circulating HOM power and their transmission properties at another cavity downstream. By considering both the generation in, and scattering by the cavities, as well as the attenuation along the vacuum chamber, a complete distribution profile for the TE and TM HOM power can be obtained
Keywords :
accelerator RF systems; accelerator cavities; electromagnetic wave absorption; electron accelerators; microwave propagation; storage rings; B-factory; HOM power attenuation; HOM power propagation; PEP-II; RF cavities; TE mode; TM mode; attenuation; higher-order-mode attenuation; higher-order-mode power propagation; Attenuation; Bellows; Heating; Linear accelerators; Optical reflection; Power generation; Radio frequency; Resonance; Scattering; Tellurium;
Conference_Titel :
Particle Accelerator Conference, 1997. Proceedings of the 1997
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-4376-X
DOI :
10.1109/PAC.1997.753099
