Impedance measurements on a test bench model of the ILC crab cavity

In order to verify detailed impedance simulations, the resonant modes in an aluminium model of the ILC crab cavity were investigated using a bead-pulling technique as well as a stretched-wire frequency domain measurement. The combination of these techniques allow for a comprehensive study of the mod...

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Bibliographic Details
Main Authors: Goudket, P., Beard, C., McIntosh, P., Burt, G., Dexter, A., Chanlek, N., Jones, R.M.
Format: Conference Proceeding
Language:English
Subjects:
Aluminum
Electromagnetic fields
Electromagnetic measurements
Frequency domain analysis
Frequency measurement
Impedance measurement
Radio frequency
Resonance
Testing
Wire
Online Access:Request full text
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Summary:In order to verify detailed impedance simulations, the resonant modes in an aluminium model of the ILC crab cavity were investigated using a bead-pulling technique as well as a stretched-wire frequency domain measurement. The combination of these techniques allow for a comprehensive study of the modes of interest. For the wire measurement, a transverse alignment system was fabricated and RF components were carefully designed to minimize any potential impedance mismatches. The measurements are compared with direct simulations of the stretched-wire experiments using numerical electromagnetic field codes. High impedance modes of particular relevance to the ILC crab cavity are identified and characterized.
ISSN:1944-4680
2152-9582
DOI:10.1109/PAC.2007.4441198