Microbunch Instability in the Beijing XFEL Test Facility Bunch Compressor

YANG Yu-Feng; ZHU Xiong-Wei; LI Ming

Chinese Physics C> 2007, Vol. 31> Issue(2) : 194-198

Microbunch Instability in the Beijing XFEL Test Facility Bunch Compressor

Institute of High Energy Physics, CAS, Beijing 100049, China2 Institute of Applied Electronics of CAEP, Mianyang 621900, China

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Abstract：
We numerically studied the microbunch instability driven by Coherent synchrotron radiation (CSR) in a magnet bunch compressor. High-frequency density perturbation may be significantly amplified when an electron beam passes through the Beijing XFEL Test Facility (BTF) magnet bunch compressor Ⅱ. The dependence of CSR-driven microbunch instability on bunch twiss parameters is sensitive. Dangerous area of twiss parameters is outlined.

References

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. The LCSL Design Study Group. SLAC Report, SLAC-R-521, 19982. Heifets S, Stupakov G. SLAC Report, SLUC-PUB-8988,20013. Saldin E L, Schneidmiller E A, Yurko M V. DESY Report,TELSA-FEL-2002-02, 20024. Heifets S, Stupakov G. Phys. Rev. ST Accel. Beams, 2002,5: 0644015. HUANG Zhi-Rong, Kim Kwang-Je. Phys. Rev. ST Accel.Beams, 2002, 5: 0744016. Saldin E L, Schneidmiller E A, Yurkov M V. NIM, 2001,A475: 3537. Saldin E L, Schneidmiller E A, Yurkov M V. NIM, 2002,A483: 5168. Heifets S, Stupakov G. SLAC Report, 2001, SLUC-PUB-87619. ZHU Xiong-Wei et al. High Energy Physics and NuclearPhysics, 2006, 30(Suppl.Ⅰ): 12610. Murphy J B, Krinsky S, Gluckstern R L. Part. Accel., 1997,57: 9

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YANG Yu-Feng, ZHU Xiong-Wei and LI Ming. Microbunch Instability in the Beijing XFEL Test Facility Bunch Compressor[J]. Chinese Physics C, 2007, 31(2): 194-198.

YANG Yu-Feng, ZHU Xiong-Wei and LI Ming. Microbunch Instability in the Beijing XFEL Test Facility Bunch Compressor[J]. Chinese Physics C, 2007, 31(2): 194-198. shu

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Received: 2006-04-17
Revised: 2006-06-23

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沈阳化工大学材料科学与工程学院沈阳 110142

Microbunch Instability in the Beijing XFEL Test Facility Bunch Compressor

Corresponding author: YANG Yu-Feng,

Institute of High Energy Physics, CAS, Beijing 100049, China2 Institute of Applied Electronics of CAEP, Mianyang 621900, China

Received Date: 2006-04-17
Accepted Date: 2006-06-23
Available Online: 2007-02-05

Abstract: We numerically studied the microbunch instability driven by Coherent synchrotron radiation (CSR) in a magnet bunch compressor. High-frequency density perturbation may be significantly amplified when an electron beam passes through the Beijing XFEL Test Facility (BTF) magnet bunch compressor Ⅱ. The dependence of CSR-driven microbunch instability on bunch twiss parameters is sensitive. Dangerous area of twiss parameters is outlined.