S-BAND KLYSTRON FOR LONG PULSE OPERATION
S-BAND KLYSTRON FOR LONG PULSE OPERATION
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用于长脉冲操作的 S 波段速调管
DOI：
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
M. Hino
中科院分区：
文献类型：
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作者：
T. Sakai;I. Sato;K. Hayakawa;Toshinari Tanaka;Y. Hayakawa;K. Yokoyama;K. Kanno;K. Ishiwata;S. Fukuda;K. Hemmi;M. Hino
日本大学电子束研究与应用实验室研制了用于红外-紫外自由电子激光器的电子直线加速器。每个S波段速调管需要提供30 MW的峰值RF输出功率，脉冲持续时间为20µs，重复频率为12.5Hz。目前三菱PV-3030 A1速调管的输出功率被限制在约20兆瓦，由于在较高的输出功率输出RF窗口损坏。研制了PV-3030 A3型的升级型，即PV-3040 N速调管，用于输出功率约为30 MW的射频窗口的耐久性试验。PV-3040 N速调管具有改进的真空端口，通过快速真空恢复保护RF窗口免受击穿。此外，RF窗口的材料已被PV-3050型中使用的材料所取代，这将改善长脉冲操作时的输出功率极限。
The electron linac for infrared to ultraviolet free electron laser has been developed at the Laboratory for Electron Beam Research and Application in Nihon University. Each S-band klystron is required to provide a peak RF output power of 30MW with the pulse duration of 20µs at the repetition rate of 12.5Hz. The output power of the current Mitsubishi PV-3030A1 klystrons is restricted to approximately 20MW due to damage to the output RF windows at higher output powers. An upgrade version of PV-3030A3 type, i.e. a PV-3040N klystron was fabricated for a durability test of the RF window at an output power around 30MW. The PV-3040N klystron has an improved vacuum port to protect the RF window from breakdown by quick vacuum recovery. Furthermore, the material of the RF window has been replaced by the one used in PV-3050 type, which will improve the output power limit at long pulse operation.