Self-consistent Analysis of 3D Wake Fields in High Energy Particle Accelerators

高能粒子加速器中 3D 尾流场的自洽分析

• 批准号: 13640251
• 负责人: KAWAGUCHI Hideki
• 金额: $ 1.79万
• 依托单位: MURORAN INSTITUTE OF TECHNOLOGY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13640251/
• 关键词: Particle Accelerators; Wake Fields; Time Domain Boundary Element Method; Coherent Synchrotron Radiation; Linear Collider; Bunch Compressor; Lienard-Wiechert Fields; MPI Parallel Processing; 時間領域境界積分方程式法; リニアーコライダー; 数値解析; 境界積分方程式法・境界要素法; 並列計算・M

Numerical Codes for particle accelerator wake field analysis which are based on time domain boundary element method (TDBEM) are developed.The TDBEM gives us attractive possibility of self-consistent analysis of wake fields and charged particle motion in the next generation high energy particle accelerators, especially for analysis of coherent synchrotron radiation in bunch compressor section of the Linear Colliders.During the term of this project, the TDBEM codes were developed for axi-symmetric 2D,3D and 2.5D accelerator cavity systems. Then the biggest problem of TDBEM in practical use was requirement of big RAM capacity. For this, MPI parallel computation system was constructed and the TDBEM codes were turned to the MPI parallel computation.It was confirmed that the wake potential simulation showed us very good agreement with conventional FDTD analysis for all of axi-symmetric 2D,3D and 2.5D TDBEM codes. And scalability in MPI parallel computation also gave us very good performance. And then, at the same time, particle trajectory simulation codes were also included in the codes to do self-consistent analysis of the wake fields and particles dynamics.It will be future works to apply the TDBEM codes to analysis of particle dynamics in real bunch compressors.

开发了基于时间域边界元方法(TDBEM)的粒子加速器尾迹场数值分析程序。TDBEM为分析新一代高能粒子加速器尾迹场和带电粒子运动提供了诱人的可能性，特别是用于分析直线对撞机束团压缩段的相干同步辐射。在本项目期间，TDBEM程序被开发用于轴对称的2D、3D和2.5D加速器腔系统。那么TDBEM在实际应用中最大的问题就是对大容量RAM的要求。为此，构建了MPI并行计算系统，并将TDBEM程序转化为MPI并行计算程序，验证了尾迹势模拟结果与常规FDTD分析结果的一致性。MPI并行计算的可扩展性也给我们带来了很好的性能。同时，程序中还包含了粒子轨迹模拟程序，对尾迹场和粒子动力学进行了自洽分析，将TDBEM程序应用于实际束团压缩机中的粒子动力学分析是今后的工作。

项目成果

H.Kawaguchi: "Time Domain Analysis of Electromagnetic Wave Fields by Boundary Integral Equation Method"Engineering Analysis with Boundary Elements. 27. 291-304 (2002)

H.Kawaguchi：“通过边界积分方程法对电磁波场进行时域分析”边界元工程分析。

川口秀樹: "ミンコフスキーノルム保存に着目した超相対論的粒子の高精度数値積分法について"京都大学数理解析研究所講究録. 1288. (2002)

川口英树：“关于超相对论粒子的高精度数值积分方法，重点关注明可夫斯基范数的保存”京都大学数学科学研究所 Kokyuroku 1288。（2002）

H.Kawaguchi: "Minkowski Norm Preserving Integrator for Ultra-Relativistic Radiating Charged Particles"International Journal of Computing Anticipatory Systems. (In press). (2002)

H.Kawaguchi：“超相对论辐射带电粒子的闵可夫斯基范数保持积分器”国际计算预期系统杂志。

H.Kawaguchi: "Time Domain Analysis of Electromagnetic Wave Fields by Boundary Integral Equation Method"Engineering Analysis with Boundary Elements. 27. 291-304 (2003)

H.Kawaguchi：“通过边界积分方程法对电磁波场进行时域分析”边界元工程分析。

K.Fujita, H.Kawaguchi: "Analysis of Particle Accelerator Wake Field by Time Domain Boundary Integral Equation Method in MPI Parallel Computers (in Japanese)"EMT. 03-36. (2003)

K.Fujita、H.Kawaguchi：“MPI 并行计算机中时域边界积分方程法对粒子加速器尾流场的分析（日语）”EMT。