Numerical study of effects of the beam tube on laser fields with a three-dimensional simulation code using the finite element method
Sobajima, M; Li YG(李永贵); Li, YG; Yamazaki, T; Yoshikawa, K; Ohnishi, M; Toku, H; Masuda, K; Kitagaki, J; Nakamura, T
刊名NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
1999
卷号429期号:1-3页码:414-418
关键词simulation vacuum tube Beijing FEL
学科分类Instruments & Instrumentation; Nuclear Science & Technology; Physics; Spectroscopy
DOI10.1016/S0168-9002(99)00119-9
通讯作者Kyoto Univ, Inst Adv Energy, Kyoto 6110011, Japan ; Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China ; SPring 8, Kamigori, Hyogo 67812, Japan
文章类型Article; Proceedings Paper
英文摘要In January 1997, the Beijing FEL observed large laser amplification at 8-18 mu m. However, through the collaborative work, it was found from both experiments and numerical simulations that the laser loss on the beam tube wall was not negligible, and that the saturation was not seen in the relatively long wavelength range because of this loss. This calls for further investigation on the effects of the beam tube of finite size. In order to include such effects self-consistently, we have developed a new three-dimensional code that can solve equations with the boundary conditions of the beam tube by using the Finite Element Method. Results show that the beam tube effects are dominant in deriving higher laser modes in the tube. compared with the optical guiding effects,, and consequently reduced gain especially in the longer wavelength range, where the beam tube effects are greatly emphasized. It is also found that TEM02 mode is the most dominant higher mode in the beam tube, and is also the main cause of gain reduction. (C) 1999 Elsevier Science B.V. All rights reserved.
类目[WOS]Instruments & Instrumentation ; Nuclear Science & Technology ; Physics, Particles & Fields ; Spectroscopy
研究领域[WOS]Instruments & Instrumentation ; Nuclear Science & Technology ; Physics ; Spectroscopy
原文出处查看原文
语种英语
WOS记录号WOS:000081126900074
引用统计
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/237382
专题中国科学院高能物理研究所_多学科研究中心_期刊论文
作者单位中国科学院高能物理研究所
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Sobajima, M,Li YG,Li, YG,et al. Numerical study of effects of the beam tube on laser fields with a three-dimensional simulation code using the finite element method[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT,1999,429(1-3):414-418.
APA Sobajima, M.,李永贵.,Li, YG.,Yamazaki, T.,Yoshikawa, K.,...&Nakamura, T.(1999).Numerical study of effects of the beam tube on laser fields with a three-dimensional simulation code using the finite element method.NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT,429(1-3),414-418.
MLA Sobajima, M,et al."Numerical study of effects of the beam tube on laser fields with a three-dimensional simulation code using the finite element method".NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 429.1-3(1999):414-418.
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