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Chinese Physics C> 2001, Vol. 25> Issue(9) : 914-919 

Optimization of the X-Band DAW (Disk-and-Washer) Accelerating Structure

  •  Department of Engineering Physics,Tsinghua University,Beijing 100084,China

  • The Disk and Washer (DAW) accelerating structure not only has shunt impedance and high Q value,but also has a high coupling constant between the neighboring cells. At X band,its advantages are especially useful. In this work, a mathematical model used to optimize DAW (without supports) cavities by SUPERFISH was built and the solution was presented. Moreover,the optimization of DAW (with supports) by MAFIA400 was also carried out and the influence of supports was analyzed.
    The dispersion curve of the optimized DAW cavities was calculated by URMELT (without supports) and MAFIA400 (with supports),the influence of the supports was studied,and the problem of the overlapping of passband in the accelerating frequency was discussed.
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  • References

    [1] LIN Yu-Zheng.Theory of Low Energy Electron Accelerator.Teaching meterial of the Department of Engineering Physics,Tsinghua University,1990,6(in Chinese)(林郁正.低能电子加速器原理.清华大学工程物理系,教材.1990,6)2. Andreev V G et al.Study of High Energy Proton Linac Structure,LA-5115,Proceedings of the 1972 Proton Linear Accelerator Conference,Oct.1972,10—133. Iwashita Y .N .I.M .in Physics Research1994,A348,15—33 4. Iwashita Y ,Noda H A etc.Fabrication of Biperiodic DAW Cavity,PAC 1999,12035. LIN Yu Zheng,LI De-Run,CHEN Hao et al.A Novel Traveling Wave DAW Accelerating Structure.CEBAF-Report-89-001 USA ,1989,6206. Manca J J,Knapp E A .Optimization of the Disk and Washer Accelerating Cavities.LA–7407.UC–287. Inagaki S .N .I.M .in Physics Research 1986,A251:41—436 8. Iwashita Y .N .I.M .in Physics Research 1994,A348:15—33 9. SUN Xiang TONG De-Chun,LIN Yu-Zheng.Atomic Energy Science and Technology 1998,32(4)(in Chinese)(孙翔,童德春,林郁正.原子能科学技术1998,32(4))

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HU Yuan, TANG Chuan-Xiang, CHEN Huai-Bi, TONG De-Chun and LIN Yu-Zheng. Optimization of the X-Band DAW (Disk-and-Washer) Accelerating Structure[J]. Chinese Physics C, 2001, 25(9): 914-919.
HU Yuan, TANG Chuan-Xiang, CHEN Huai-Bi, TONG De-Chun and LIN Yu-Zheng. Optimization of the X-Band DAW (Disk-and-Washer) Accelerating Structure[J]. Chinese Physics C, 2001, 25(9): 914-919. shu
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Received: 2000-10-08
Revised: 1900-01-01
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Optimization of the X-Band DAW (Disk-and-Washer) Accelerating Structure

    Corresponding author: HU Yuan,
  • Department of Engineering Physics,Tsinghua University,Beijing 100084,China
  • Received Date: 2000-10-08
  • Accepted Date: 1900-01-01
  • Available Online: 2001-09-05

Abstract: The Disk and Washer (DAW) accelerating structure not only has shunt impedance and high Q value,but also has a high coupling constant between the neighboring cells. At X band,its advantages are especially useful. In this work, a mathematical model used to optimize DAW (without supports) cavities by SUPERFISH was built and the solution was presented. Moreover,the optimization of DAW (with supports) by MAFIA400 was also carried out and the influence of supports was analyzed.
The dispersion curve of the optimized DAW cavities was calculated by URMELT (without supports) and MAFIA400 (with supports),the influence of the supports was studied,and the problem of the overlapping of passband in the accelerating frequency was discussed.

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