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Chinese Physics C> 2005, Vol. 29> Issue(11) : 1095-1099 

Time-Resolved Measurement System Using Optical Transition Radiation for Electron Beam of High Energy and High Current

  •  Institute of Fluid Physics,China Academy of Engineering Physics,Mianyang 621900,China

  • The technology using optical transition radiation (OTR) which is a main method for measuring the electron beam of high energy and high current has been developed for the past ten years．OTR characterized by the ultra-fast response，high resolution and capability of measuring both spatial and angular profiles of an electron beam．It also can measure the beam energy and divergence．A time-resolved measurement results of an electron beam produced by linear induction accelerator (LIA) can provide much more detail information so that many problems about the beam transmission can be known well．Such a time-resolved measurement system has been developed recently in our lab and put into operation．It provides an on-line beam diagnostic method for a 18.5MeV, 2kA, 90ns electron pulse．The beam emittance and its variation during the 90ns pulse are obtained in 10ns time interval．This system can capture 8 frame images at one time in the minimum interval period of 10ns while the exposure time is 3ns．The frame interval time is 8 level which changes from 10ns to 1280ns in power of 2 and the exposure time can change in three level of 3ns, 5ns, 10ns．The size of image is 1376×1035 and the object plane size can reach φ80mm.
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  • References

    [1] . ZHANG Y K. Preliminary Research of Real-Time Energy-Spectrum Analysis Based on Optical Transition Radiation.Thesis of Master’s Degree, Tsinghua University, 1999(in Chinese)(张贇凯.基于光学渡越辐射方法实时能谱分析的初步研究.清华大学硕士学位论文，1999)2. JIN X. Research of Applying Optical Transition Radiationon Beam Diagnostics. Thesis of Master’s Degree, CAEP,1997(in Chinese)(金晓.穿越辐射光在束流诊断中的应用研究.中国上程物理研究院硕士学位论文，1997)3. GU An-Jia, DING Yuan-Tao, ZHAO Kui et al.High En-ergy Phys. and Nucl. Phys., 2003, 27(2): 163—168(in Chinese)(谷安佳，丁原涛，赵夔等.高能物理与核物理，2003，27(2): 163-168)4. CHENG Si-Fu, DING Bo-Nan, XIA Lian-Shen et al. HighPower Laser and Particle Beams, 2002, 14(2): 317—320(in Chinese)(陈思富，丁伯南，夏连胜等.强激光与粒子束，2002, 14(2):317-320)5. YANG Guo-Jun, LIU Chen-Jun, LIN Yu-Zheng et al.HighEnergy Phys. and Nucl. Phys., 2005, 29(3): 305—308(in Chinese)(杨国君，刘承俊，林郁正等.高能物理与核物理，2005, 29(3):305-308)6. Sage G P Le. Time-Resolved Emittance Characterizationof an Induction Linac Beam Using Optical Transition Ra-diation: UCRL-ID-153254(LLNL). 2002. 117. Vermare C, Moir D C, Seitz G J. Optical Transition Radi-ation(OTR) Measurements of an Intense Pulsed ElectronBeam: LA-UR-00-2064. 2000. 187—1898. DENG Jian-Jun, DING Bo-Nan, WANG Hua-Chen etal.High Power Laser and Particle Beams, 2003, 15(5):502—504(in Chinese)(邓建军，丁伯南，王华岑等.强激光与粒子束，2003, 15(5):502-504)9. Richardson R D, Platt R C, Crist C E. Particle AcceleratorConference, 1993, 3: 2456—2458

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JIANG Xiao-Guo, YANG Guo-Jun, ZHANG Kai-Zhi, SHI Jin-Shui, DENG Jian-Jun, WANG Yuan and LI Cheng-Gang. Time-Resolved Measurement System Using Optical Transition Radiation for Electron Beam of High Energy and High Current[J]. Chinese Physics C, 2005, 29(11): 1095-1099.
JIANG Xiao-Guo, YANG Guo-Jun, ZHANG Kai-Zhi, SHI Jin-Shui, DENG Jian-Jun, WANG Yuan and LI Cheng-Gang. Time-Resolved Measurement System Using Optical Transition Radiation for Electron Beam of High Energy and High Current[J]. Chinese Physics C, 2005, 29(11): 1095-1099. shu
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Received: 2005-03-07
Revised: 1900-01-01
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Time-Resolved Measurement System Using Optical Transition Radiation for Electron Beam of High Energy and High Current

    Corresponding author: JIANG Xiao-Guo,
  • Institute of Fluid Physics,China Academy of Engineering Physics,Mianyang 621900,China
  • Received Date: 2005-03-07
  • Accepted Date: 1900-01-01
  • Available Online: 2005-11-05

Abstract: The technology using optical transition radiation (OTR) which is a main method for measuring the electron beam of high energy and high current has been developed for the past ten years．OTR characterized by the ultra-fast response，high resolution and capability of measuring both spatial and angular profiles of an electron beam．It also can measure the beam energy and divergence．A time-resolved measurement results of an electron beam produced by linear induction accelerator (LIA) can provide much more detail information so that many problems about the beam transmission can be known well．Such a time-resolved measurement system has been developed recently in our lab and put into operation．It provides an on-line beam diagnostic method for a 18.5MeV, 2kA, 90ns electron pulse．The beam emittance and its variation during the 90ns pulse are obtained in 10ns time interval．This system can capture 8 frame images at one time in the minimum interval period of 10ns while the exposure time is 3ns．The frame interval time is 8 level which changes from 10ns to 1280ns in power of 2 and the exposure time can change in three level of 3ns, 5ns, 10ns．The size of image is 1376×1035 and the object plane size can reach φ80mm.

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