| 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
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| 1999
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| 发表期刊 | NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
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| 卷号 | 429期号:1-3页码:414-418 |
| 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
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| 文章类型 | Article; Proceedings Paper
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| 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. |
| 关键词 | simulation
vacuum tube
Beijing FEL
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| 学科领域 | Instruments & Instrumentation; Nuclear Science & Technology; Physics; Spectroscopy
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| 研究领域[WOS] | Instruments & Instrumentation
; Nuclear Science & Technology
; Physics
; Spectroscopy
; Instruments & Instrumentation
; Nuclear Science & Technology
; Physics
; Spectroscopy
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| DOI | 10.1016/S0168-9002(99)00119-9
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| URL | 查看原文
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| 语种 | 英语
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| 研究领域[WOS] | Instruments & Instrumentation
; Nuclear Science & Technology
; Physics
; Spectroscopy
; Instruments & Instrumentation
; Nuclear Science & Technology
; Physics
; Spectroscopy
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| WOS类目 | Instruments & Instrumentation
; Nuclear Science & Technology
; Physics, Particles & Fields
; Spectroscopy
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| WOS记录号 | WOS:000081126900074
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://ir.ihep.ac.cn/handle/311005/237382
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| 专题 | 多学科研究中心
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| 作者单位 | 中国科学院高能物理研究所
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推荐引用方式
GB/T 7714 |
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.
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| 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.
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| 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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