High-power test of the new 3-dB power splitter for the PAL XFEL S-band LINAC RF system

详细信息    查看全文

• 作者：Youngdo Joo (1)
  Yongjung Park (1)
  Hoon Heo (1)
  Jinyul Hu (1)
  Sung-Soo Park (1)
  Sang-Hee Kim (1)
  Woonha Hwang (1)
  Gun-Young Moon (1)
  Sosung Lee (1)
  Heung-Soo Lee (1)
  Sungju Noh (2)
  Kyoungmin Oh (2)
  
• 关键词：3 ; dB power splitter ; Biplanar coupler ; FDTD simulation ; LINAC ; PAL XFEL
• 刊名：Journal of the Korean Physical Society
• 出版年：2014
• 出版时间：April 2014
• 年：2014
• 卷：64
• 期：8
• 页码：1096-1104
• 全文大小：
• 参考文献：1. J. H. Han, H. S. Kang and I. S. Ko, / Proceedings of IPAC2012, TUPPP061 (New Orleans, Louisiana, USA, May 21鈥?5, 2012), p. 1735.
  2. J. Choi / et al., J. Korean Phys. Soc. 50, 1372 (2007). CrossRef
  3. M. G. Kim, J. Choi, T. Y. Lee, H. S. Kang, C. M. Yim and I. S. Ko, J. Korean Phys. Soc. 53, 3741 (2008). CrossRef
  4. W. H. Hwang, Y. D. Joo, Y. J. Park, S. H. Kim, H. G. Kim, H. S. Lee, H. S. Kang and J. Y. Huang, / Proceedings of IPAC2012, THPPC057 (New Orleans, Louisiana, USA, May 21鈥?5, 2012), p. 3419.
  5. P. B. Wilson, SLAC-TN-73-15, Stanford Linear Accelerator technical note (1973).
  6. Z. D. Farkas, H. A. Hogg, G. A. Loew and P. B. Wilson, SLAC-PUB-1453 (1974).
  7. C. G. Montgomery, R. H. Dicke and E. M. Purcell, / Principles of Microwave Circuits (McGraw-Hill, New York, 1948).
  8. J. Neilson, S. Tantawi and V. Dolgashev, / Proceedings of Linear Accelerator Conference, MOP077, (Tsukuba, Japan, Sep. 12鈥?7, 2010), p. 235.
  9. S. Tantawi, Phys. Rev. ST Accel. Beams 9, 112001 (2006). CrossRef
  10. CST Microwave Studio User鈥檚 Manual, available on website http://www.youtube.com/playlist?list=PL0A63CDCC0D6466C8.
  
• 作者单位：Youngdo Joo (1)
  Yongjung Park (1)
  Hoon Heo (1)
  Jinyul Hu (1)
  Sung-Soo Park (1)
  Sang-Hee Kim (1)
  Woonha Hwang (1)
  Gun-Young Moon (1)
  Sosung Lee (1)
  Heung-Soo Lee (1)
  Sungju Noh (2)
  Kyoungmin Oh (2)
  
  1. Pohang Accelerator Laboratory, Pohang, 790-784, Korea
  2. VitzroTech, Ansan, 425-833, Korea
  
• ISSN：1976-8524

文摘

The 3-dB power splitter to be used in the Pohang Accelerator Laboratory X-ay Free-electron Laser (PAL XFEL), which have been under construction since 2011, must operate at a peak power of 400 MW and a repetition rate of 120 Hz. For these operational conditions of the PAL XFEL, the old 3-dB power splitter that was originally designed to be used in the PLS LINAC will most suffer from RF breakdown. Therefore, for the new 3-dB power splitter, the original design has been modified to reduce the field gradient and the surface current. The new 3-dB power splitter is designed by using a finite-difference time-domain (FDTD) simulation. We have fabricated a prototype, and the result of a high-power test indicates that the RF performance of the new 3-dB power splitter satisfies the specifications of the PAL XFEL S-band LINAC RF system.