Analysis of calibration schemes for CSNS quadrupole

Na Ma; Bo Li; Lan Dong; Xiaolong Wang; Lingling Men; Tong Wang; Jing Liang; Zhenqiang He; Zhiyong Ke; Shang Lu; Yuanying Han; Luping Yan; Luyan Zhang; Haoyue Yan

doi:10.11884/HPLPB202234.210512

High Power Laser and Particle Beams, Volume. 34, Issue 8, 084002(2022)

Analysis of calibration schemes for CSNS quadrupole

Na Ma^1,2,3, Bo Li^1,2、*, Lan Dong^1,2, Xiaolong Wang^1,2, Lingling Men^1,2, Tong Wang^1,2, Jing Liang^1,2, Zhenqiang He^1,2, Zhiyong Ke^1,2, Shang Lu¹, Yuanying Han¹, Luping Yan¹, Luyan Zhang¹, and Haoyue Yan¹

Author Affiliations

¹Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

²Spallation Neutron Source Science Center, Dongguan 523803, China

³School of Optics Photonics, Beijing Institute of Technology, Beijing 100081, China

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Figures & Tables(12)

Fig. 1. Main quadrupoles’ layout of CSNS’s ring

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Fig. 2. Diagram of the quadrupole model and device coordinate

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Fig. 3. Magnetic measuring platform

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Fig. 4. Magnet collimation reference parts

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Fig. 5. Calibration of the rotation center

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Fig. 6. X-direction deviation between rotation center and magnetic field center

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Fig. 7. Y-direction deviation between rotation center and magnetic field center

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Fig. 8. X-direction deviation between rotation center and mechanical center

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Fig. 9. Y-direction deviation between rotation center and mechanical center

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Table 1. Main mechanical parameters of quadrupole of CSNS’s ring
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Table 1. Main mechanical parameters of quadrupole of CSNS’s ring
category aperture/mm magnetic field length/mm magnet core length/mm magnet height/mm quantity
206Q 206 410 320 1000 16
272Q 272 900 810 1340 16
222Q 222 450 370 1080 8
253Q 253 620 510 1240 8

Table 2. Deviation of deviation between mechanical center and rotation center under two calibrations

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Table 2. Deviation of deviation between mechanical center and rotation center under two calibrations

magnet type	maximum deviation/mm	minimum deviation/mm	deviation standard deviation/mm	maximum deviation/mm	minimum deviation/mm	deviation standard deviation/mm
magnet type	X-direction			Y-direction
206Q	0.04	−0.06	0.02	0.02	−0.04	0.01
222Q	0.03	−0.06	0.03	0.05	−0.03	0.03
253Q	0.04	−0.03	0.02	0.02	−0.05	0.02
272Q	0.03	−0.04	0.02	0.05	−0.08	0.03

Table 3. Deviation statistics of mechanical center and rotation center

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Table 3. Deviation statistics of mechanical center and rotation center

magnet type	maximum deviation/mm	minimum deviation/mm	deviation standard deviation/mm	maximum deviation/mm	minimum deviation/mm	deviation standard deviation/mm
magnet type	X-direction			Y-direction
206Q	0.26	−0.12	0.09	0.16	−0.10	0.06
222Q	0.03	−0.18	0.06	0.12	−0.21	0.09
253Q	0.07	−0.13	0.07	0.06	−0.17	0.07
272Q	0.22	−0.14	0.10	0.09	−0.23	0.10

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Na Ma, Bo Li, Lan Dong, Xiaolong Wang, Lingling Men, Tong Wang, Jing Liang, Zhenqiang He, Zhiyong Ke, Shang Lu, Yuanying Han, Luping Yan, Luyan Zhang, Haoyue Yan. Analysis of calibration schemes for CSNS quadrupole[J]. High Power Laser and Particle Beams, 2022, 34(8): 084002

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