Title :
Two frequencies cavities for beam position monitor
Author :
Kaljuzhny, V.E. ; Kostin, D.V. ; Lalayan, M.W. ; Milovanov, O.S. ; Sobenin, N.P. ; Yarigin, S.N. ; Holtkamp, N. ; Dohlus, M.
Author_Institution :
Eng. Phys. Inst., Moscow, Russia
Abstract :
Use of the symmetrical SBLC section coupler (hybrid coupler) as well as one of the section cell (BPM cell) for the beam position monitor (BPM) was studied. In both cases the requirements were the high order mode (HOM) power withdrawal of two polarization without changing frequencies at operational mode and HOM. In case of hybrid coupler the protrusions inside the cavity were used. In case of the BPM cell in 15th cell of SBLC disk loaded waveguide (DLW), four cut-off waveguides at operating frequency were used. Calculations and measurements with initial 30 cells of SBLC DLW results are presented
Keywords :
accelerator cavities; circular waveguides; particle beam diagnostics; position measurement; BPM; beam position monitor; cutoff waveguides; disk loaded waveguide; high order mode power withdrawal; hybrid coupler; symmetrical SBLC section coupler; two frequencies cavities; Cutoff frequency; Equivalent circuits; Monitoring; Optical coupling; Physics; Pins; Polarization; Power engineering and energy; Synchrotrons; Tuning;
Conference_Titel :
Particle Accelerator Conference, 1997. Proceedings of the 1997
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-4376-X
DOI :
10.1109/PAC.1997.751122
