| Title | Analysis of the Jefferson Lab C100 Cavities using Mode Extraction |
| Authors | J. Cary, J. Leddy, C. Bauer, G. Werner, F. Marhauser, R. Rimmer |
| JLAB number | (None) |
| LANL number | (None) |
| Other number | (None) |
| Document Type(s) | (Meeting) |
| Associated with EIC: | No |
| Supported by Jefferson Lab LDRD Funding: | No |
| Funding Source: | Nuclear Physics (NP) |
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Meeting
Abstract compiled for IPAC 2019
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| Publication Abstract: | Mode extraction makes use of the Filter Diagonalization Method to find the modes of an oscillator, in particular an electromagnetic cavity. Mode extraction can find multiple modes at once, from time series data that has duration much less than that required for the resolution of closely spaced modes. Mode extraction can handle degenerate modes, and it can provide mode profiles. Here we report on the application of mode extraction to the Jefferson Lab C100 cavities. The lowest (accelerating) pass band modes
are at frequencies, 1.478e9 to 1.500e9, with minimum separation of 2 MHz, for which fourier resolution would require a time series of 500 ns. However, mode extraction is able to accurately compute the separate modes with a time series of only 40 ns. The ability to compute multiple modes quickly reduces design time, in particular that associated with computing impedances due to higher-order modes. A design process including mode extraction will be presented. |
| Experiment Numbers: | other |
| Group: | SRF Research & Dev |
| Document: | |
| DOI: | |
| Accepted Manuscript: | |
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