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Loaded microwave cavities

A microwave cavity has a fundamental mode, which exhibits the lowest resonant frequency of all possible resonant modes. For example, the fundamental mode of a cylindrical cavity is the TM010 mode. For certain applications, there is motivation to reduce the dimensions of the cavity. This can be done by using a loaded cavity, where a capacitive or an inductive load are integrated in the cavity’s structure.

The precise resonant frequency of a loaded cavity must be calculated using finite element methods for Maxwell’s equations with boundary conditions.

Loaded cavities are particularly suited for accelerating low velocity charged particles. This application for many types of loaded cavities has been covered in review article[1]. The most common types are listed below.


References

  1. ^ J.R., Delayen, (1990). "Low-velocity superconducting accelerating structures". {{cite journal}}: Cite journal requires |journal= (help)CS1 maint: extra punctuation (link) CS1 maint: multiple names: authors list (link)
  2. ^ Carter, Richard G.; Feng, Jinjun; Becker, Ulrich (2007). "Calculation of the Properties of Reentrant Cylindrical Cavity Resonators" (PDF). IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES. 55 (12): 2531–2538 – via IEEE Xplore.
  3. ^ https://cds.cern.ch/record/1021070/files/p125.pdf
  4. ^ E. Jaeschke et al., "The Heidelberg 3MV-CW Heavy Ion Postaccelerator Section Using Independently Phased Spiral Resonators," in IEEE Transactions on Nuclear Science, vol. 24, no. 3, pp. 1136-1140, June 1977, doi: 10.1109/TNS.1977.4328874.
  5. ^ K. W. Shepard, J. E. Mercereau and G. J. Dick, "A New Superconducting Heavy Ion Accelerating Structure Using Chemically Polished Lead Surfaces," in IEEE Transactions on Nuclear Science, vol. 22, no. 3, pp. 1179-1182, June 1975, doi: 10.1109/TNS.1975.4327840.
  6. ^ Ben-Zvi, I.; Brennan, J. M. (1983-07-01). "The quarter wave resonator as a superconducting linac element". Nuclear Instruments and Methods in Physics Research. 212 (1): 73–79. doi:10.1016/0167-5087(83)90678-6. ISSN 0167-5087.
  7. ^ Delayen, J. R., and J. E. Mercereau. "Cryogenic test of a superconducting half-wave resonator for the acceleration of heavy ions." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 257.2 (1987): 71-76.

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