Mitigating the effects of higher order multipole fields in the magnets of the Accelerator Test Facility 2 at KEK

BAI Sha; WANG Dou; GAO Jie

doi:10.1088/1674-1137/36/8/013

Chinese Physics C> 2012, Vol. 36> Issue(8) : 756-760 DOI: 10.1088/1674-1137/36/8/013

Mitigating the effects of higher order multipole fields in the magnets of the Accelerator Test Facility 2 at KEK

Abstract
HTML
Reference
Related

PDF

Abstract：
The ATF2 project is the final focus system prototype for the ILC and CLIC linear collider projects, with the purpose of reaching a 37nm vertical beam size at the interaction point. In the nanometer beam size regime, higher order multipoles in magnets become a crucial point for consideration. The strength and rotation angle of the ATF2 QEA magnets were reconstructed from the IHEP measurements and compared with the KEK ones to be identical. Based on the study of the skew multipoles sensitivity, we report on the analysis of the possible mitigation of the measured multipoles. A suggestion is given which will benefit the ATF2 present commissioning to reach the goal beam size, and also the reduced β optics in future.

References

[1]

Grishanov B I et al. 2005, Report No. SLAC-R-771[2] Bambade P et al. Phys. Rev. ST Accel. Beams, 2010, 13: 042801[3] ILC RDR, ILC-Report-2007-001[4] Masuzawa M, Sugahara R. IEEE Transations on Applied Superconductivity, 2010, 20(3): 1969-1972[5] Tomas R et al. PAC09 WE6PFP024[6] Cherrill S. 2010, Report No. SLAC-PUB-14339[7] Iselin F C. 1985, CERN LEP-TH No. 85-15[8] Marin E et al. 2011, CERN-ATS-2011-122

[1]	Zhi-Wei Zuo , Jun-Chen Pei , Xue-Yu Xiong , Yi Zhu . Global analysis of Skyrme forces with higher-order density dependencies. Chinese Physics C, 2018, 42(6): 064106. doi: 10.1088/1674-1137/42/6/064106
[2]	Fei Wu , Chen Wu , Zhong-Zhou Ren . Neutron stars including the effects of chaotic magnetic fields and anomalous magnetic moments. Chinese Physics C, 2017, 41(4): 045102. doi: 10.1088/1674-1137/41/4/045102
[3]	Yun-Guo Jiang , Jia-Zhen Liu , Song He . Near integrability of kink lattice with higher order interactions. Chinese Physics C, 2017, 41(11): 113107. doi: 10.1088/1674-1137/41/11/113107
[4]	M. Mohsenzadeh , E. Yusofi . Higher order corrections to asymptotic-de Sitter inflation. Chinese Physics C, 2017, 41(8): 085101. doi: 10.1088/1674-1137/41/8/085101
[5]	Riyasat Husain , A D Ghodke , Gurnam Singh . Optimal placement of magnets in Indus-2 storage ring. Chinese Physics C, 2015, 39(3): 037002. doi: 10.1088/1674-1137/39/3/037002
[6]	JIAO Yi . Evolutionary genetic optimization of the injector beamdynamics for the ERL test facility at IHEP. Chinese Physics C, 2014, 38(8): 088102. doi: 10.1088/1674-1137/38/8/088102
[7]	CUI Xiao-Hao , JIAO Yi , WANG Jiu-Qing , WANG Shu-Hong . BBU effect in an ERL-FEL two-purpose test facility. Chinese Physics C, 2013, 37(7): 077005. doi: 10.1088/1674-1137/37/7/077005
[8]	ZHAO Yu-Ning , LI Wei-Min , WU Cong-Feng , WANG Lin . Analytic modeling of instabilities driven by higher-order modes in the HLS Ⅱ RF system with a higher-harmonic cavity. Chinese Physics C, 2013, 37(8): 087005. doi: 10.1088/1674-1137/37/8/087005
[9]	BAI Sha , GAO Jie . Propagation of a beam halo in accelerator test facility 2 at KEK. Chinese Physics C, 2013, 37(5): 057005. doi: 10.1088/1674-1137/37/5/057005
[10]	WANG Shu-Hong , WANG Jiu-Qing , CHEN Sen-Yu , CHI Yun-Long , WANG Guang-Wei , CAO Jian-She , LIU Sheng-Guang , GAO Jie , ZHAI Ji-Yuan , LIU Wei-Bin , CUI Xiao-Hao , XU Jin-Qiang , ZHOU Zu-Sheng , LI Xiao-Ping , LU Hui-Hua , XIAO Qiong . Design studies on the ERL-FEL test facility at IHEP, Beijing. Chinese Physics C, 2012, 36(5): 469-474. doi: 10.1088/1674-1137/36/5/016
[11]	KE Zun-Jian , LI Jia-Cai , ZHANG Shao-Ping , AN Guang-Peng , TANG Xing-Hua , YANG Tao . A plastic scintillating fiber position detector in vacuum for the test beam facility at BEPCⅡ-LINAC. Chinese Physics C, 2012, 36(1): 67-70. doi: 10.1088/1674-1137/36/1/011
[12]	SHEN Xiao-Kang , CAO Shu-Chun , ZHANG Zi-Min , ZHAO Hong-Wei , ZHAO Quan-Tang , LIU Ming , JING Yi , LI Zhong-Ping , WAN Ming , WANG Bin , YANG Chun-Ming , XIAO Rong-Qing , ZHANG Ying-Fa , LI Ji-An . The test pulse line ion accelerator in Lanzhou. Chinese Physics C, 2012, 36(3): 241-246. doi: 10.1088/1674-1137/36/3/009
[13]	CHEN Li-Zhu , PAN Xue , CHEN Xiao-Song , WU Yuan-Fang . Critical behavior of higher cumulants of order parameter in the 3D-Ising universality class. Chinese Physics C, 2012, 36(8): 727-732. doi: 10.1088/1674-1137/36/8/008
[14]	LIU Sheng-Guang , XU Jin-Qiang . Design studies on a 500 kV DC gun photo-injector for the BXERL test facility. Chinese Physics C, 2011, 35(1): 88-91. doi: 10.1088/1674-1137/35/1/018
[15]	ZHANG Meng , GU Qiang . New linear accelerator (Linac) design based on C-band accelerating structures for SXFEL facility. Chinese Physics C, 2011, 35(11): 1066-1069. doi: 10.1088/1674-1137/35/11/016
[16]	BAI Sha , GAO Jie . Simulation of beam size multiknobs correction at the Accelerator Test Facility 2 at KEK. Chinese Physics C, 2011, 35(4): 397-401. doi: 10.1088/1674-1137/35/4/014
[17]	CHEN Jia-Er , ZHU Kun , GUO Zhi-Yu , LU Yuan-Rong , YAN Xue-Qing , GAO Shu-Li , WANG Zhi , KANG Ming-Lei , FANG Jia-Xun , YU Mao-Lin , LI Wei-Guo , GUO Ju-Fang . Power test of the separated function RFQ accelerator. Chinese Physics C, 2009, 33(S2): 56-59. doi: 10.1088/1674-1137/33/S2/015
[18]	ZHANG Hui-Hui , SHEN Hua-Jun , ZHOU Jing-Tao , LIU Xin-Yu . Photon higher-order squeezing effects of the q analogue of a single-mode field interacting with a Ξ-type three-level atom. Chinese Physics C, 2009, 33(8): 622-625. doi: 10.1088/1674-1137/33/8/004
[19]	HUI Ping . Higher Order RPA Calculation of the Glueball Wave Function in 2+1-D SU(2) LGT. Chinese Physics C, 2005, 29(4): 345-349.
[20]	Zheng Xite , Lei Chunhong , Li Yuliang , Chen Hong . Study of Higher Order Cumulant Expansion of U(l) Lattice Gauge Model at Finite Temperature. Chinese Physics C, 1993, 17(S3): 271-276.

Access

Get Citation

BAI Sha, WANG Dou and GAO Jie. Mitigating the effects of higher order multipole fields in the magnets of the Accelerator Test Facility 2 at KEK[J]. Chinese Physics C, 2012, 36(8): 756-760. doi: 10.1088/1674-1137/36/8/013

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2011-10-12
Revised: 1900-01-01

Article Metric

Article Views(2127)
PDF Downloads(325)
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

Mitigating the effects of higher order multipole fields in the magnets of the Accelerator Test Facility 2 at KEK

Received Date: 2011-10-12

Accepted Date: 1900-01-01

Available Online: 2012-08-05

Abstract: The ATF2 project is the final focus system prototype for the ILC and CLIC linear collider projects, with the purpose of reaching a 37nm vertical beam size at the interaction point. In the nanometer beam size regime, higher order multipoles in magnets become a crucial point for consideration. The strength and rotation angle of the ATF2 QEA magnets were reconstructed from the IHEP measurements and compared with the KEK ones to be identical. Based on the study of the skew multipoles sensitivity, we report on the analysis of the possible mitigation of the measured multipoles. A suggestion is given which will benefit the ATF2 present commissioning to reach the goal beam size, and also the reduced β optics in future.

HTML

Reference (1)

Mitigating the effects of higher order multipole fields in the magnets of the Accelerator Test Facility 2 at KEK

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article

Mitigating the effects of higher order multipole fields in the magnets of the Accelerator Test Facility 2 at KEK

HTML

目录