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

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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)

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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.

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

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通讯作者: 陈斌, bchen63@163.com

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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.

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Analysis and Calculation on Electron Bunch Length Measurement by Using CTR

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