Calculation of Wakefield in Detuning Structure of Next Generation Linear Collider with High Accuracy—Analysis of RF Quantities in Disc Structure

WANG LanFa; LIN YuZheng

Chinese Physics C> 2000, Vol. 24> Issue(6) : 567-572

Calculation of Wakefield in Detuning Structure of Next Generation Linear Collider with High Accuracy—Analysis of RF Quantities in Disc Structure

WANG LanFa ^, ,
LIN YuZheng

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

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Abstract：
A variational method is presented for computations of both monopole mode and dipole mode rf quantities in metal disk-loaded waveguides. It allows for rounding of edge of a disk hole without any approximation in shape treatment. Good agreement has been found between computed and experimental results. It has higher accuracy than those of some existing simulation programs, hence provides a good tool to calculate wakefield of the tapered disc-loaded waveguides in next generation linear colliders.

References

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LI ZhcngHai et al. KEKISL.ACISG2, July 1998[2] Ursula Van Rienben. High order Mode Analysis of Tapered Disk-loaded Waveguides Using the Mode Matching techniyue, Particle Accelerator, 1993, 41:173-201[3] Heifers, S A, KheifeLs S ,A. Longitudinal Electromagnetic Fields in an Aperiodic Structure. SLAG-PUB-6907[4] Masashi Yamamoto. Study of Long-Rang Wake Field in Accelerating Structure of Linac. KEK Repurt 94-9[5] Bartsh M. Proc. of 1990 Linear Acc. Conf,Albuquerque, New Mexico, P. 372. LA-12004-C, Los Alamos National l.ah[6] Weiland T. CIRMEL and URMEL-TUSER GUIDE, 1982[7] Menml M T, Stokes H K. User's Guide for the POISSON/SUPERFISEI Group of Codes. .Accelerator Theory and Sinn ulation Group, AT-6, Los Alamos National Laboratory, Las Alamos, NM 87545. January 1987. L.A-UR-87-115.[8] Y E XuanHua, ZHOU WenZhen, SHEN ShuangLin et al. Analysis of Dimension and RF Quantities in Disc Structure by Variational Method. In: Institute of Science attd Technology Information in China ed. Panicle Accelerator and it's Application, Chongying;Science and Technology Press (in (:hinese),1980. 48(叶宣化,周文振,沈双林等用变分法计算电子直线加速器的盘荷波导尺寸及物理量,见:中国科学技术情报研究所重庆分所编辑.粒了加速器及其应用.重庆:科学技术文献出版社分社,1980. 48)[9] Macao Nakamura. Japanese Journal of Applied Physics, 1968,7(3):257-271

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WANG LanFa and LIN YuZheng. Calculation of Wakefield in Detuning Structure of Next Generation Linear Collider with High Accuracy—Analysis of RF Quantities in Disc Structure[J]. Chinese Physics C, 2000, 24(6): 567-572.

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Received: 1999-03-08
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Calculation of Wakefield in Detuning Structure of Next Generation Linear Collider with High Accuracy—Analysis of RF Quantities in Disc Structure

WANG LanFa ^,
LIN YuZheng

Corresponding author: WANG LanFa,

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

Received Date: 1999-03-08
Accepted Date: 1900-01-01
Available Online: 2000-06-05

Abstract: A variational method is presented for computations of both monopole mode and dipole mode rf quantities in metal disk-loaded waveguides. It allows for rounding of edge of a disk hole without any approximation in shape treatment. Good agreement has been found between computed and experimental results. It has higher accuracy than those of some existing simulation programs, hence provides a good tool to calculate wakefield of the tapered disc-loaded waveguides in next generation linear colliders.