Sm<SUB>2</SUB>Co<SUB>17</SUB> magnet blocks for the in-vacuum undulators (IVU20) at the SSRF

HE Yong-Zhou; ZHOU Qiao-Gen; ZHANG Ji-Dong

doi:10.1088/1674-1137/35/4/013

Chinese Physics C> 2011, Vol. 35> Issue(4) : 392-396 DOI: 10.1088/1674-1137/35/4/013

Sm₂Co₁₇ magnet blocks for the in-vacuum undulators (IVU20) at the SSRF

Abstract
HTML
Reference
Related

PDF

Abstract：
The design and development status of Sm₂Co₁₇ magnet blocks for two in-vacuum undulators (IVU20) at the SSRF with the same hybrid design has been described. By the technological improvement of some processes and comparison with the experimental Sm₂Co₁₇ magnet blocks for the IVU25A, magnetic properties such as the intrinsic coercive force H_ci and the average magnetic moment M are increased, the bend point magnetic field H_k value and pass rate are significantly increased, and the magnetic field uniformity of the magnet blocks are significantly improved. The basic developmental method of high uniformity Sm₂Co₁₇ magnet blocks for IVU20 is presented. The magnetic field qualities of the magnet blocks, including the magnetic property, the magnetic moment distribution, the magnetization deviation angle and the magnetic field uniformity, basically satisfy the specifications of the two IVU20 in-vacuum undulators.

References

[1]

JIA Qi-Ka. High Power Laser and Particle Beams, 2003, 15(6): 5 (in Chinese)2 HE Yong-Zhou, ZHANG Ji-Dong, ZHOU Qiao-Gen et al. High Power Laser and Particle Beams, 2010, 22(7): 1629 (in Chinese)3 Rober C.O'handley. Modern Magnetic Materials Principles and Applications. Beijing: Chemical Industry Press, 2002. 506-5074 Yamamoto S et al. Rev. Sci. Instrum., 1992, 63(1): 400-4-35 Yamamoto S et al. AIP Conf. Proc., 2004, 705: 211-2146 HE Shui-Jiao. The Latest Developments of HighPerformance SmCo Rare Earth Permanent Magnet. In: HE Shui-Jiao. China Magnetic IndustryStrategies Seminar for Sustainable Development by Leaps and Bounds. Mianyang: Southwest Institute of Applied Magnetic of China (SIAM), 2003. 66 (in Chinese)

[1]	Abdurrahim , A. D. Ghodke . Effect of undulators on the stored electron beam of Indus-2. Chinese Physics C, 2015, 39(7): 077002. doi: 10.1088/1674-1137/39/7/077002
[2]	YANG Xiao-Liang , MA Li-Zhen , WU Wei , ZHENG Shi-Jun , DU Jun-Jie , HAN Shao-Fei , GUAN Ming-Zhi , HE Yuan . Design of a superconducting magnet for CADS. Chinese Physics C, 2012, 36(9): 886-890. doi: 10.1088/1674-1137/36/9/016
[3]	Michel Davier . New results on the hadronic vacuum polarization contribution to the muon g－2. Chinese Physics C, 2010, 34(6): 718-727. doi: 10.1088/1674-1137/34/6/018
[4]	ZHOU Xue-Mei , LIU Gui-Min , HOU Jie , ZHANG Wen-Zhi , TIAN Shun-Qiang . Excitation curve calibration for the SSRF magnet system. Chinese Physics C, 2010, 34(5): 589-592. doi: 10.1088/1674-1137/34/5/015
[5]	ZHAO Yu-Bin , YIN Cheng-Ke , ZHANG Tong-Xuan , FU Ze-Chuan , ZHAO Zhen-Tang , DAI Zhi-Min , LIU Jian-Fei , WANG Fang . Digital prototype of LLRF system for SSRF. Chinese Physics C, 2008, 32(9): 758-760. doi: 10.1088/1674-1137/32/9/015
[6]	QIN Song-Mei , ZHOU Li-Juan , GU Yun-Ting , MA Wei-Xing . Vacuum condensates of QCD. Chinese Physics C, 2008, 32(7): 521-529. doi: 10.1088/1674-1137/32/7/003
[7]	WANG Fang , WANG Guang-Wei , LU Jian-Fa . Low Level RF Control System for SSRF. Chinese Physics C, 2004, 28(1): 88-91.
[8]	KANG Wen , DING Xiao-Ping , HAN Qian , PANG Jia-Biao , CHEN Sen-Yu . Design and Construction of a Thin Septum Magnet Prototype for Injection of SSRF Storage Ring. Chinese Physics C, 2002, 26(4): 423-429.
[9]	JIANG JunQin . Study of the Vacuum State for 2+1 Dimensional SU(2) Lattice Gauge Field Theory. Chinese Physics C, 2000, 24(10): 922-926.
[10]	Hui Ping . Fifth Order Approximate Analytic Calculation of (2+1)-D SU(2) Vacuum Wavefunction. Chinese Physics C, 1998, 22(4): 322-325.
[11]	Hui Ping , Chen Qizhou . Fourth Order Approximate Analytic Calculation of (2+1)-D SU(2) Vacuum Wavefunction. Chinese Physics C, 1995, 19(9): 820-825.
[12]	Chen Qizhou , Fang Xiyan , Guo Shouhong . Calculation of Vacuum State for 2+1-Dimensional SU(3) Lattice Gauge Theory. Chinese Physics C, 1995, 19(S3): 265-272.
[13]	Chen Qizhou , Li Zhibing , Li Lei , Guo Shuohong . Infrared Vacuum Wavefunction of (2+1)-Dimensional SU(2) Gauge Field. Chinese Physics C, 1994, 18(1): 37-42.
[14]	ZHU Quan-Ling , GE Ling-Xiao . Peripheral Collisions of ²⁰Ne+²⁰Ne at 25MeV/A. Chinese Physics C, 1993, 17(7): 658-664.
[15]	CHEN Qi-Zhou , LI Zhi-Bing , LUO Xiang-Qian , DAI Fu-Hua , GUO Shuo-Hong . VACUUM EXPECTATION VALUES OF 6-LINK WILSON LOOP IN SU(2) LATTICE GAUGE THEORY. Chinese Physics C, 1990, 14(3): 212-219.
[16]	LI Yun-Cai , YANG Shan-De , WU Shi-Shu . CONTRIBUTION OF THE 2H-1P MULTIPLE SCATTERING CORRELATION AND SELF SCREENING EFFECT TO THE SPECTRA OF ¹⁷O AND ¹⁵O. Chinese Physics C, 1990, 14(7): 646-653.
[17]	Wu Shishu , Yang Shande , Li Yuncai . Contribution of the 2p-1h Multiple Scattering Correlation to the Spectra of ¹⁷O and ¹⁵O. Chinese Physics C, 1989, 13(S3): 321-329.
[18]	LUO Xiang-Qian , CHEN Qi-Zhou , GUO Shuo-Hong . VACUUM OF 2+1 DIMENSIONAL SU(2) LGT WITH FERMIONS AND SPONTANEOUS CHIRAL SYMMETRY BREAKING. Chinese Physics C, 1989, 13(4): 328-333.
[19]	Luo Xiangqian , Chen Qizhou , Guo Shuohong . Vacuum State of 2+1 Dimensional SU(2) Lattice Gauge Theory With Fermions and Spontaneous Chiral Symmetry Breaking. Chinese Physics C, 1989, 13(S2): 157-164.
[20]	CHEN Xin-Yi , YANG Shan-De , WU Shi-Shu . ¹⁵O-¹⁵N,¹⁷F-¹⁷O COULOMB DISPLACEMENT ENERGIES. Chinese Physics C, 1988, 12(6): 822-828.

Access

Get Citation

HE Yong-Zhou, ZHOU Qiao-Gen and ZHANG Ji-Dong. Sm₂Co₁₇ magnet blocks for the in-vacuum undulators (IVU20) at the SSRF[J]. Chinese Physics C, 2011, 35(4): 392-396. doi: 10.1088/1674-1137/35/4/013

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2010-06-25
Revised: 1900-01-01

Article Metric

Article Views(2770)
PDF Downloads(498)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Sm₂Co₁₇ magnet blocks for the in-vacuum undulators (IVU20) at the SSRF

Received Date: 2010-06-25
Accepted Date: 1900-01-01
Available Online: 2011-04-05

Abstract: The design and development status of Sm₂Co₁₇ magnet blocks for two in-vacuum undulators (IVU20) at the SSRF with the same hybrid design has been described. By the technological improvement of some processes and comparison with the experimental Sm₂Co₁₇ magnet blocks for the IVU25A, magnetic properties such as the intrinsic coercive force H_ci and the average magnetic moment M are increased, the bend point magnetic field H_k value and pass rate are significantly increased, and the magnetic field uniformity of the magnet blocks are significantly improved. The basic developmental method of high uniformity Sm₂Co₁₇ magnet blocks for IVU20 is presented. The magnetic field qualities of the magnet blocks, including the magnetic property, the magnetic moment distribution, the magnetization deviation angle and the magnetic field uniformity, basically satisfy the specifications of the two IVU20 in-vacuum undulators.