CSNS校正磁铁积分场均匀性测量研究

Zhou Jianxin; Kang Wen; Li Shuai; Sun Xianjing; Wu Xi; Wu Yuwen; Liu Yiqin; Li Li; Deng Changdong

doi:10.11884/HPLPB201931.190028

CSNS校正磁铁积分场均匀性测量研究

doi: 10.11884/HPLPB201931.190028

周建新^{1, 2, 3,},
康文^{1, 2, 3},
李帅^{1, 2, 3},
孙献静¹,
吴锡^{1, 2, 3},
吴煜文^{1, 2, 3},
刘艺琴^{1, 2, 3},
李藜^{1, 2, 3},
邓昌东^{1, 2, 3}

1.
中国科学院高能物理研究所, 北京 100049
2.
散裂中子源科学中心, 广东东莞 523803
3.
东莞高精度磁场测量重点实验室, 广东东莞 523803

基金项目:

China Spallation Neutron Source Project; National Natural Science Foundation of China 11775241

详细信息

中图分类号: TL816
计量
- 文章访问数: 1136
- HTML全文浏览量: 253
- PDF下载量: 55
- 被引次数: 0
出版历程
- 收稿日期: 2019-01-31
- 修回日期: 2019-07-15
- 刊出日期: 2019-11-15

Research on measurement of integral field uniformity of CSNS corrector magnets

Zhou Jianxin^{1, 2, 3
,},
Kang Wen^{1, 2, 3},
Li Shuai^{1, 2, 3},
Sun Xianjing¹,
Wu Xi^{1, 2, 3},
Wu Yuwen^{1, 2, 3},
Liu Yiqin^{1, 2, 3},
Li Li^{1, 2, 3},
Deng Changdong^{1, 2, 3}

1.
Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
2.
Spallation Neutron Source Science Center, Dongguan 523803, China
3.
Dongguan Key Laboratory of High Precision Magnetic Field Measurement, Dongguan 523803, China

Funds:

China Spallation Neutron Source Project; National Natural Science Foundation of China 11775241

More Information

Author Bio:
Zhou Jianxin(1983—), male, doctor, engaged in magnetic field measurement; zhoujx@ihep.ac.cn

摘要

摘要: 中国散裂中子源(CSNS)加速器主要由一台直线加速器、一台1.6 GeV快循环加速器以及低能、高能输运线组成。其中有十二种类型校正磁铁，共计74台。校正磁铁是加速器运行的重要组成部件，必须测量其积分场及均匀性以确保加速器性能。为了快速和高效地完成磁铁测量任务，使用了旋转线圈测量系统。对测量原理、数据处理方法以及系统之间的测量结果对比进行了介绍。这对批量磁铁高效率测量是有帮助的。
- 校正磁铁 /
- 磁场测量 /
- 旋转线圈测量系统 /
- 积分场均匀性
Abstract: The China Spallation Neutron Source (CSNS) accelerator mainly consists of a linear accelerator, a 1.6 GeV rapid cycling synchrotron (RCS), a low energy transport line and a high energy transport line. Among them, there are twelve types of corrector magnets, a total of 74 sets. In order to complete the measurement of the corrector magnets quickly and efficiently, the rotating coil measurement system is used. This paper will introduce the measurement principle, the magnetic measurement system, and a comparison of the measurement results in detail, which is helpful for efficient measurement of mass magnets.
- corrector magnet /
- magnetic field measurement /
- rotating coil measurement system /
- integral field uniformity

HTML全文

Figure 1. Photo of RCS magnets

下载: 全尺寸图片幻灯片

Figure 2. Overview of the CSNS rotating coil measurement system

下载: 全尺寸图片幻灯片

Figure 3. Mechanical structure of radial coil

下载: 全尺寸图片幻灯片

Figure 4. Overview of the magnet support and adjustment platform

下载: 全尺寸图片幻灯片

Figure 5. integral field uniformities measured by Hall probe androtating coil separately (LRBT-80CV-2#)

下载: 全尺寸图片幻灯片

Figure 6. Horizontal and vertical correctors being tested

下载: 全尺寸图片幻灯片

Figure 7. Batch magnets measurement are completed by rotating coil system

下载: 全尺寸图片幻灯片

Table 1. Parameters of partial corrector magnets for CSNS

magnet type	quantity	B₀/T	effective length/m	integral field/ (T·m)	aperture	the width of good field region/mm(±1%)	total weight/kg
LRBT-80CH/V	15	0.01	0.2	0.002	80 mm×80 mm	70	35
RCS-300CH/V	34	—	—	0.008	300 mm×300 mm	192(CH)/218(CV)	186
RTBT-180CH/V	8	0.04	0.2	0.008	180 mm×180 mm	153	144
RTBT-206CH/V	9	0.04	0.2	0.008	206 mm×206 mm	175	168

下载: 导出CSV

Table 2. Design parameters of radial coil

coil number	magnet type	radius r₁/mm	radius r₂/mm	radius r₃/mm	radius r₄/mm	outer coil/ turns	inner coil/ turns	skeleton length/mm
A	LR-80Q, LR-120Q, LR-80CH/V	36	25.5	27	16.5	280	420	750
B	RT-180QA/B, RT-180CH/V, RT-206CH/V	76.5	54.18	57.38	35.06	120	180	1300
C	RCS-230S, RCS-300CH/V	102	79.59	81.6	66.8	160	320	1300

下载: 导出CSV

Table 3. Comparison of the measurement results between the two measurement systems

X/mm	uniformities of field integral (LRBT-80CH 8#)		difference	Y/mm	uniformities of field integral (LRBT-80CV 2#)		difference
X/mm	Hall probe	rotating coil	difference	Y/mm	Hall probe	rotating coil	difference
-35	0.011 122	0.010 134	0.000 988	-35	0.012 788	0.011 092	0.001 696
-30	0.007 015	0.006 459	0.000 556	-30	0.008 654	0.007 209	0.001 445
-25	0.003 989	0.003 876	0.000 113	-25	0.005 391	0.004 500	0.000 891
-20	0.002 343	0.002 143	0.000 200	-20	0.003 314	0.002 651	0.000 663
-15	0.000 848	0.001 029	-0.000 181	-15	0.001 701	0.001 418	0.000 283
-10	0.000 395	0.000 365	0.000 030	-10	0.000 939	0.000 630	0.000 309
-5	-0.000 180	0.000 042	-0.000 222	-5	0.000 462	0.000 177	0.000 285
0	0.000 000	0.000 000	0.000 000	0	0.000 000	0.000 000	0.000 000
5	0.000 386	0.000 191	0.000 195	5	0.000 377	0.000 046	0.000 331
10	0.000 697	0.000 664	0.000 033	10	0.000 603	0.000 376	0.000 227
15	0.001 355	0.001 481	-0.000 126	15	0.001 424	0.001 061	0.000 363
20	0.002 614	0.002 754	-0.000 140	20	0.002 994	0.002 222	0.000 772
25	0.004 698	0.004 653	0.000 045	25	0.004 453	0.004 043	0.000 410
30	0.007 811	0.007 422	0.000 389	30	0.007 415	0.006 779	0.000 636
35	0.011 989	0.011 371	0.000 618	35	0.011 832	0.010 797	0.001 035
Note: difference=value by Hall probe-value by Rotating coil

下载: 导出CSV

参考文献(15)

[1]	DiMarco J, Harding D J, Kashikhin V, et al. Test results of the AC field measurements of FERMILAB booster corrector magnets[C]//Proceedings of EPAC08. 2008: 2347-2349.
[2]	Harding D J, DiMarco J, Drennan C C, et al. Design and fabrication of a multi-element corrector magnet for the FERMILAB booster synchrotron[C]//Proceedings of PAC07. 2007: 452-454.
[3]	Parker B, Anerella M, Escallier J, et al. The SuperKEKB interaction region corrector magnets[C]//Proceedings of IPAC16. 2016: 1193-1195.
[4]	DiMarco J. Fundamentals of magnetic measurements with rotating coils: A tutorial[R]//19^th International magnet Measurement Workshop. 2015.
[5]	Arpaia P, Buzio M, De Oliveira R, et al. A high-precision miniaturized rotating coil transducer for magnetic measurements[J]. Sensor and Actuators A: Physical, 2018, 274: 37-49.
[6]	Fu S N, Chen H S, Chen Y W, et al. Status of CSNS project[C]//Proceedings of IPAC13. 2013: 3995-3999.
[7]	Wang Sheng, An Yuwen, Fang Shouxian, et al. An overview of design for CSNS/RCS and beam transport[J]. Sci China-Phys Mech Astron, 2011, 54: 239-244. doi: 10.1007/s11433-011-4564-x
[8]	Inner Technique Note[Z]. CSNS-ACAP-TC-11-06, CSNS-ACAP-TC-12-13, CSNS-ACMT-TC-14-04.
[9]	Tanabe J. Iron dominated electromagnets design, fabrication, assembly and measurements[R]. SLAC-R-754, 2005.
[10]	Jain A K. Measurements of field quality using harmonic coils[R/OL]. https://www.bnl.gov/magnets/staff/Gupta/scmagcourse/Harmoniccoil-slides.PDF, 2001.
[11]	Zhao Jijiu, Yin Zhaosheng. Particle accelerator technology[M]. Beijing: Higher Education Press, 2006.
[12]	Zhou Jianxin, Kang Wen, Li Shuai, et al. Development of rotating coil measurement system for China Spallation Neutron Source[J]. High Power Laser and Particle Beams, 2018, 30: 105101.
[13]	Zhou J X, Li L, Yin Baogui, et al. A harmonic coil measurement system based on a dynamic signal acquisition device[J]. Nuclear Instruments and Methods in Physics Research A, 2010, 624: 549-553. doi: 10.1016/j.nima.2010.10.009
[14]	Zhou Jianxin, Kang Wen, Yin Baogui, et al. The development of magnetic field measurement system for drift-tube linac quadrupole[J]. Nuclear Instruments and Methods in Physics Research A, 2015, 786: 142-146. doi: 10.1016/j.nima.2015.03.050
[15]	Zhou Jianxin, Kang Wen, Li Shuai, et al. AC magnetic field measurement using a small flip coil system for rapid cycling AC magnets at the China Spallation Neutron Source (CSNS)[J]. Nuclear Instruments and Methods in Physics Research A, 2018, 880: 80-86. doi: 10.1016/j.nima.2017.10.040