Beam alignment for SXFEL

Gu Duan; Zhao MinGhua

doi:10.3788/HPLPB20122409.2183

Volume 24 Issue 09

Aug. 2012

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Article Navigation > High Power Laser and Particle Beams > 2012 > 24(09): 2183-2168

Li ChaoLong, Shi Haiquan, Liu Zhengfang, et al. Simulation calculation of intense beam transporting in dipole magnet field[J]. High Power Laser and Particle Beams, 2012, 24: 2718-2722. doi: 10.3788/HPLPB20122411.2718

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Gu Duan, Zhao MinGhua. Beam alignment for SXFEL[J]. High Power Laser and Particle Beams, 2012, 24: 2183-2168. doi: 10.3788/HPLPB20122409.2183

Citation:

Gu Duan, Zhao MinGhua. Beam alignment for SXFEL[J]. High Power Laser and Particle Beams, 2012, 24: 2183-2168. doi: 10.3788/HPLPB20122409.2183

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Beam alignment for SXFEL

doi: 10.3788/HPLPB20122409.2183

Gu Duan^,,
Zhao MinGhua

1.
Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,China

Received Date: 2012-04-05
Rev Recd Date: 2012-05-25
Publish Date: 2012-08-24

Abstract

Abstract

The SXFEL has stringent restrictions on beam emittance growth, and the traditional optical alignment can no longer meet its requirements, but the beam-based alignment(BBA) method allows more precise alignment, further reducing the linac errors to meet SXFEL requirements. In undulator sections, orbit changes are not only caused by misalignments of quadrupole magnet position, but also the errors of undulator magnet. In order to achieve alignment accuracy over long distance, the quadrupole magnet errors and beam position monitor (BPM) offset are obtained by measuring. BPM data under different conditions and using SVD algorithm for calculation and analysis,With the method above, software based on Matlab has been designed and comparedwith other software simulation results demonstrate that the orbit offset could be reduced by one order.
- beam alignment,
- free-electron laser,
- orbit correction,
- beam position offset,
- quadrupole offset

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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

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Beam alignment for SXFEL

doi: 10.3788/HPLPB20122409.2183

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Beam alignment for SXFEL

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