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Observation of Mode Patterns for High Purity Mode Operation in the Submillimeter Wave Gyrotron FU VA |
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| Authors: | T. Idehara I. Ogawa S. Maeda R. Pavlichenko S. Mitsudo D. Wagner M. Thumm |
| Affiliation: | (1) Research Center for Development of Far Infrared Region, Fukui University, 3-9-1 Bunkyo, Fukui-shi, 8507, Japan;(2) Cryogenic Laboratory, Faculty of Engineering, Fukui University, 3-9-1 Bunkyo, Fukui-shi, 8507, Japan;(3) Institut für Plasmaforchung, Universität Stuttgart, Pfaffenwaldring 31, D-70569 Stuttgart, Germany;(4) Institut für Hochleistungsimpulse- und Mikrowellentechnik, Forschungszentrum Karlsruhe, P.O. Box 3640, D-76021 Karlsruhe, Germany |
| Abstract: | Operation tests of a cavity designed for high purity mode operation of the submillimeter wave gyrotron FU VA has been carried out successfully. The observed emission patterns of several cavity modes appear very pure and are compared with calculated results. High purity mode operation has the advantage of making the conversion to Gaussian-like beams more efficient. |
| Keywords: | high purity mode submillimeter wave gyrotron emission pattern liquid-helium free superconducting magnet |
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