| Electron Beam Spectrum Diagnostics with Optical Transition Radiation on the Beijing Free-Electron Laser |
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| 作者姓名： | 李泉凤 吴频 高建江 吴刚 |
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| 作者单位： | [1]DepartmentofEngineeringPhysics,TsinghuaUniversity,Beijing100084,China [2]BeijingFree-ElectronLaserLaboratory,InstituteofHighEnergyPhysics,Beijing100084,China |
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| 基金项目： | Supported by the National Natural Science Foundation of China (No. 19875029) |
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| 摘 要： | A measurement system was developed to measure the electron beam spectrum of the Beijing free-electron laser based on the optical transition radiation (OTR). This paper describes the system, which consists of a 32-channel high resolution of 0.02% OTR detector, especially the spectrometer. The OTR an- gular-distribution pattern at the focal plane has two apexes, but the two apexes are smoothed out due to theel ectron beam energy distribution. The energy spectrum can be measured if the magnet energy resolution is higher than 0.7% to distinguish the electron beam energy distribution.
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| 关 键 词： | 光学转换辐射 电子束诊断 能谱 自由电子激光 |
Electron Beam Spectrum Diagnostics with Optical Transition Radiation on the Beijing Free-Electron Laser |
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| LI Quanfeng ,WU Pin,GAO Jianjiang,WU Gang.Electron Beam Spectrum Diagnostics with Optical Transition Radiation on the Beijing Free-Electron Laser[J].Tsinghua Science and Technology,2004,9(2):246-248. |
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| Authors: | LI Quanfeng WU Pin GAO Jianjiang WU Gang |
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| Institution: | LI Quanfeng **,WU Pin,GAO Jianjiang,WU Gang Department of Engineering Physics,Tsinghua University,Beijing 100084,China, Beijing Free-Electron Laser Laboratory,Institute of High Energy Physics,Beijing 100084,China |
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| Abstract: | A measurement system was developed to measure the electron beam spectrum of the Beijing free-electron laser based on the optical transition radiation (OTR). This paper describes the system, which consists of a 32-channel high resolution of 0.02% OTR detector, especially the spectrometer. The OTR an-gular-distribution pattern at the focal plane has two apexes, but the two apexes are smoothed out due to the electron beam energy distribution. The energy spectrum can be measured if the magnet energy resolution is higher than 0.7% to distinguish the electron beam energy distribution. |
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| Keywords: | optical transition radiation beam diagnostics energy spectrum |
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