Design of Photonic Crystal Klystrons

Y. Xu, R. Seviour

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

6 Citations (Scopus)


2D Photonic crystals (PC) with defects can act as standing-wave resonators, which offer benefit of high mode selectivity for building novel RF sources [1]. We introduce our work on designing two-cavity single-beam and multi-beam klystrons using triangular lattice metallic PCs. We present the cold test results of the stub-coupled single-beam structure, which show that at resonance a very low reflection can be obtained, and the waves are well confined. We also present bead-pull measurement results of field strengths in the defect, using modified perturbation equation for small unit dielectric cylinder, which are in very good agreement to numerical results. A 6-beam klystron cavity is designed as a 6-coupled-defect structure with a central stub, which only couples to the in-phase mode at the lowest frequency. Finally, we present a feasibility discussion of using this multi-defect PC structure to construct an integrated klystron-accelerator cavity, along with numerical results showing a peak acceleration field of 22MV/m can be achieved.

Original languageEnglish
Title of host publicationIPAC 2010
Subtitle of host publicationProceedings of the 1st International Particle Accelerator Conference
EditorsA. Noda, Ch. Petit-Jean-Genaz, V. Schaa, T. Shirai, A. Shirakawa
PublisherJoint Accelerator Conferences Website (JACoW)
Number of pages3
ISBN (Print)9789290833529
Publication statusPublished - Jun 2010
Externally publishedYes
Event1st International Particle Accelerator Conference - Kyoto International Conference Center, Kyoto, Japan
Duration: 23 May 201028 May 2010
Conference number: 1


Conference1st International Particle Accelerator Conference
Abbreviated titleIPAC 2010
Internet address


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