大功率速調管中寄生振蕩問題的實驗研究
ON OSCILLATIONS IN HIGH POWER KLYSTRONS
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摘要: 本文詳細地描述了在S波段20MW大功率速調管和S波段1.5MW寬頻帶速調管中觀察到的兩種不同類型的振蕩現象。實驗和理論分析表明,一種類型的振蕩足電子槍區(qū)的二極管振蕩,另一種類型的振蕩是由速調管諧振腔的高次模TM011引起的模型單腔振蕩。為研制工作穩(wěn)定可靠的高峰值和高平均功率速調管提供了有價值的理論和實驗依據。Abstract: Two different types of oscillations observed in S-band 20 MW high power klystron and S-band 1.5 MW broadband klystron are described in detail. Experiments and theoretical analysis show that one type of oscillation is diode oscillation happened in the ele-ctron gun region, and the other is -mode monotron oscillation caused by the first high order mode TM011 of the klystron cavities. In order to suppress the diode oscillation, the geometry of the electron gun has been redesigned for destroying the phase condition of the oscillation. In order to overcome the -mode monotron oscillation, the QL of cavities is decreased t0 300- 400 by plasma coating the microwave attenuation material on the interior surface of cavjties. The research work on these types of oscillations provides valuable theoretical and experimental design basis for high peak and high average power klystrons with good performance, high stability and reliability.
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謝家麐,趙永翔,速調管群聚理論,科學出版社,北京,1966年,第八章.[2]K. G. Merdinian, J. V. Lebacqz, Higb Power, Permanent Magnet Focused, S-band Klystron for Linear Accelerator Use, Proc. of Fifth International Conf. of Microwave Tubes, Paris, France, (1965), pp. 242-245.[3]R. W. Pierce.[J].J. Jasberg, J. V. Lebacqz, Klystrons, The Two-Mile Electron Accelerator, Published by SLAC, USA.1966,:-[4]K. Tomiyasu, M. P. Forrer, IRE Trans. on ED, ED-8(1961)5, 381-386.[5]K. Tomiyasu, IRE Trans. on ED, ED-10(1963)2, 95.[6]K. Tomiyasu, PIRE, 49(1961)7, 1207-1208.[7]K. Tomiyasu, IRE Trans. on MTT, MTT-9(1961)11, 480-484.[8]K. H. Kreuchen, N. J. Disereus, PIEE, 105(B) Suppl. (1958)12, 860-869.[9]D. H. Presist, W. J. Leidigh, IRE Trans. on ED, ED-10(1963)3, 201-211.[10]丁耀根,大功率寬頻帶速調管振蕩問題的研究,中國電子學會真空電子學會第八屆年會論文摘要集,陜西咸陽,1990年12月,第3頁. -
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