Analysis and Calculation on Electron Bunch Length Measurement by Using CTR

LI Zhi-Hui; DAI Jian-Ping; YANG Xue-Ping; FAN Yao-Hui; XIE Jia-Lin; ZHU Jun-Biao

Chinese Physics C> 2003, Vol. 27> Issue(9) : 831-835

Analysis and Calculation on Electron Bunch Length Measurement by Using CTR

Institute of High Energy Physics, CAS, Beijing 100080,China

Abstract
HTML
Reference
Related

PDF

Abstract：
Measurement of electron bunch length through its generated CTR is a new frequency domain technique developed in the accelerator and FEL fields recently. In this paper we analyze theoretically and calculate numerically CTR produced by a train of RF-linac electron bunches of a few picoseconds at BFEL. For the CTR emitted at wavelengths longer than the bunch length (λ≥2πσz),the intensity is enhanced by a factor of 10⁸which is the number of electrons in the bunch; CTR energy is mainly concentrated near the beam axis and can be up to several millijoules for Gaussian and rectangular bunches. A polarized-type Michelson interferometer was designed to measure autocorrelation interferograph of CTR, from which one can diagnose longitudinal length of this bunches and derive its electron density distribution.

References

[1]

. TESLA Technical Design Report.200105,Humberg.20012. LCLS Technical Design Report SLAC-R-593LC 414,April2002 3. Happek U ,Sievers A J.Phys.Rev.Lett,1991,67:2962—29654. Shibata Y ,IshiK ,Takahashi T et al.Phys.Rev.,1992,A45:R8340—83435. Kung P ,Lihn H ,Wiedemann H .Phys.Rev.Lett.,1994,73:967—9706. Tremaine A ,Rosenzweig J B ,Anderson et al.Phys.Rev.Lett.,1998,81:5816—5819 7. Kovachiov G A et al.Nucl.Instr.and Meth.,2000,A448:70—72 8. Watanabe T et al.Nucl.Instr.and Meth.,1999,A437:10—119. Geitz Metal.Nucl.Instr.and Meth.,2000,A445:343—34710. Lumpkin A H et al.Phys.Rev.Lett.,2001,86:79—8211. XIE Jia-Lin.HEP NP ,1994,18:763—766(in Chinese)(谢家麟.高能物理与核物理,1994,18:763—766)12. FrankI M ,Ginsburg V L .J .Physics(Moscow),1945,9:353 13. ZHU Jun-Biao et al.HEP NP ,2000,24(2):172—180(in Chinese)(朱俊彪等.高能物理与核物理,2000,24(2):172—180) 14. ZHU Jun-Biao et al.HEP NP .,2001,25(5):455—460(in Chinese)(朱俊彪等.高能物理与核物理,2001,25(5):455—460)

[1]	MIAO Xi-Xi , LIU Lie . Preliminary Research of the Propagation of Annular IREBS in Coaxial Permanent Magnet Halbach Circuit. Chinese Physics C, 2008, 32(S1): 313-316.
[2]	. CCD Camera System designing for the Beam Diagnose using OTR. Chinese Physics C, 2008, 32(1): 67-71. doi: 10.1088/1674-1137/32/1/015
[3]	SUN Da-Rui , XU Jin-Qiang , TANG Kun . Simulation and Error Analysis of Electro-optic Sampling Measurement of Ultrashort Electron Beam Bunch Length. Chinese Physics C, 2008, 32(S1): 121-123.
[4]	DAI Jian-Ping . Adjustment of Energy of BFEL Linac. Chinese Physics C, 2006, 30(S1): 93-95.
[5]	JIANG Xiao-Guo , LI Cheng-Gang , WANG Yuan , DAI Wen-Hua , XIA Lian-Sheng , CHEN Nan , YANG Guo-Jun . Accurate Burst Trigger Mode for Dragon-Ⅰ Electron Beam Measurement System. Chinese Physics C, 2006, 30(8): 784-787.
[6]	XIANA Dao , HUANG Wen-Hui . Diffraction Radiation and Its Applications in Electron Beam Diagnostics. Chinese Physics C, 2006, 30(S1): 75-77.
[7]	ZHU Jun-Biao , LI Zhi-Hui , BAI Sha , XIE Jia-Lin . Off-line Experiment on the Bunchlength Diagnostic Device at BFEL. Chinese Physics C, 2006, 30(S1): 78-80.
[8]	WU Chong , SUN Zhi-Jia , HENG Yue-Kun , ZHAO Xiao-Jian , WU Jin-Jie , SHI Feng , XUE Sheng-Tian , ZHAO Yu-Da , ZHAO Li , JIANG Lin-Li , WANG Feng-Mei . A Measurement of Transit Time Spread of Photomultiplier Tube with Cherenkov Light. Chinese Physics C, 2005, 29(9): 896-899.
[9]	YANG Guo-Jun , ZHANG Zhuo , CHEN Si-Fu , LIU Cheng-Jun , LIN Yu-Zheng . Research of Transition Radiation on Intense Electron Beam Diagnostics. Chinese Physics C, 2005, 29(3): 305-311.
[10]	JIANG Xiao-Guo , YANG Guo-Jun , ZHANG Kai-Zhi , SHI Jin-Shui , DENG Jian-Jun , WANG Yuan , LI Cheng-Gang . Time-Resolved Measurement System Using Optical Transition Radiation for Electron Beam of High Energy and High Current. Chinese Physics C, 2005, 29(11): 1095-1099.
[11]	LIU Ai-Qin , LOU Zheng-Ping , CHEN You-Zhong , ZHOU Wei-Min , Dai Zhi-Min . Analysis and Calculation on Electron Bunch Length Measurementby Using CDR. Chinese Physics C, 2005, 29(5): 517-523.
[12]	GU An-Jia , DING Yuan-Tao , ZHAO Kui , ZHANG Bao-Cheng , QUAN Sheng-Wen , LU Xiang-Yang , CHEN Jia-Er . A New Measurement of Electron Beam Emittance with Cerenkov Radiation “Double Imaging” Method. Chinese Physics C, 2003, 27(2): 163-168.
[13]	ZHAO Zheng , GUO Zhi-Yuan , LIU De-Kang , MA Li , QIN Qing , WANG Jiu-Qing , XU Gang . Bunch Length Measurement of BEPC with a Streak Camera. Chinese Physics C, 2003, 27(4): 359-362.
[14]	PAN Wei-Min , LI Zhong-Quan , XIE Xi . Effects of the Relativistic Electron Beam on the Phase Velocity of RF Field in Accelerator. Chinese Physics C, 2001, 25(10): 1022-1028.
[15]	ZHU Jun-Biao , ZHANG Guo-Qing , LI Yong-Gui , XIE Jia-Lin . Numerical Calculation on Coherent Synchrotron Radiation Intensity Due to Inter-Bunch Interference in the Bunch Train. Chinese Physics C, 2001, 25(5): 455-460.
[16]	YANG XiaoDong , SONG MingTao , XIA JiaWen , WEI BaoWen , WU JunLi . Adiabatic Expansion of Electron Beam. Chinese Physics C, 2000, 24(12): 1179-1184.
[17]	WANG ShuiQing . Calculation of the Electron Trajectory for 200kV Self-shielded Electron Accelerator. Chinese Physics C, 2000, 24(6): 573-577.
[18]	ZHU JunBiao , LI YongGui , XIE JiaLin . Theoretical Estimation and Experimental Design of High lntensity Coherent Synchrotron Radiation Generated by Short Electron Bunches at BFEL. Chinese Physics C, 2000, 24(2): 172-180.
[19]	Li Yun , Wang Guangwei . Research of Bunch Lengthening of BEPC Ring by Many-Particle Simulation. Chinese Physics C, 1996, 20(10): 950-956.
[20]	LI Jin , MAO Ze-Pu . The Measurement of Bunch Length of Beijing Electron Positron Collider. Chinese Physics C, 1991, 15(5): 385-390.

Access

Get Citation

LI Zhi-Hui, DAI Jian-Ping, YANG Xue-Ping, FAN Yao-Hui, XIE Jia-Lin and ZHU Jun-Biao. Analysis and Calculation on Electron Bunch Length Measurement by Using CTR[J]. Chinese Physics C, 2003, 27(9): 831-835.

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2003-01-28
Revised: 1900-01-01

Article Metric

Article Views(2991)
PDF Downloads(657)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Analysis and Calculation on Electron Bunch Length Measurement by Using CTR

Corresponding author: LI Zhi-Hui,

Institute of High Energy Physics, CAS, Beijing 100080,China

Received Date: 2003-01-28

Accepted Date: 1900-01-01

Available Online: 2003-09-05

Abstract: Measurement of electron bunch length through its generated CTR is a new frequency domain technique developed in the accelerator and FEL fields recently. In this paper we analyze theoretically and calculate numerically CTR produced by a train of RF-linac electron bunches of a few picoseconds at BFEL. For the CTR emitted at wavelengths longer than the bunch length (λ≥2πσz),the intensity is enhanced by a factor of 10⁸which is the number of electrons in the bunch; CTR energy is mainly concentrated near the beam axis and can be up to several millijoules for Gaussian and rectangular bunches. A polarized-type Michelson interferometer was designed to measure autocorrelation interferograph of CTR, from which one can diagnose longitudinal length of this bunches and derive its electron density distribution.

HTML

Reference (1)

Analysis and Calculation on Electron Bunch Length Measurement by Using CTR

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article