A PROPOSAL FOR THE MEASUREMENT OF THE REAL EMITTANCE OF THE BEAM IN CYCLIC ACCELERATORS

XU Jian-Ming; LIU Shi-Yao

Chinese Physics C> 1983, Vol. 7> Issue(2) : 178-185

A PROPOSAL FOR THE MEASUREMENT OF THE REAL EMITTANCE OF THE BEAM IN CYCLIC ACCELERATORS

XU Jian-Ming ^, ,
LIU Shi-Yao

Abstract
HTML
Reference
Related

PDF

Abstract：
In this paper, the envelope of numatched beam in the periodic focusing system is analyzed and the expression of beam cross section is given. We find that, by using the commonly used methods, we can't get the real emittance of the beam in the ring accelerators, but can only get the acceptance of the accelerator corresponding to the maximum aperature filled by the beam.
In this paper, we propose to measure the beam envelope by a thin plastic scintillation filament. And from the measured data we can get the real emittance of the beam. At the same time, we can get the tune values, the coherent oscillation amplitude and its frequency and the closed orbit distortion.

References

[1]

Schonauer, A., Beamscope-A novel device for measuring emittances and betatron amplitude distributions, CERN/PS/BR 79-8.[2] Antoniou,E., On a data reduction method for emittance measurement using the targets in the CERN PS booster rings. PS/BR Note/77-29.[3] 徐建铭，用三靶测定发散度椭圆的方法的分析，粒子加速器及其应用(科学技术文献出版社重庆分社，1980), 133页.[4] Bovet, C., Placei, A., Rabany, M., The instrumentation of the secondary beams at the CERN SPS, CERN-SPS-EBP/CB/CP 1977.

[1]	MIAO Xi-Xi , LIU Lie . Preliminary Research of the Propagation of Annular IREBS in Coaxial Permanent Magnet Halbach Circuit. Chinese Physics C, 2008, 32(S1): 313-316.
[2]	HUANG Guo-Qing , YE Kai-Rong . Beam Measurement Using Digital Technology. Chinese Physics C, 2008, 32(S1): 142-144.
[3]	YANG Xue-Qing , FANG Jia-Xun , GUO Zhi-Yu , CHEN Jia-Rong . Matching Design Method for High Intensity RFQ Accelerators. Chinese Physics C, 2006, 30(S1): 19-21.
[4]	YANG Guo-Jun , ZHANG Zhuo , CHEN Si-Fu , XU Tie-Zheng , MU Fan , lijin , JIANG Xiao-Guo . Beam Measurement of Dragon-I Linear Induction Accelerator. Chinese Physics C, 2006, 30(S1): 105-107.
[5]	CHEN Yan-Wei , WANG Shu-Hong , PEI Guo-Xi , LIU Wei-Bin , YE Qiang . Beam Commissioning of BEPCII Injector Linac. Chinese Physics C, 2006, 30(6): 562-565.
[6]	PEI Shi-Lun , WANG Shu-Hong . Transient Beam Loading Effects on Standing Wave Cavities in Linear Accelerators. Chinese Physics C, 2006, 30(5): 454-461.
[7]	YANG Guo-Jun , ZHANG Zhuo , CHEN Si-Fu , LIU Cheng-Jun , LIN Yu-Zheng . Time-Resolved Emittance Measurement of Intense Pulse Beams Using the Modified Three Gradient Method. Chinese Physics C, 2005, 29(2): 191-196.
[8]	LI Shi-Hong , JIANG Shan , HE Ming , GUAN Yong-Jing , DONG Ke-Jun , WU Shao-Yong , YUAN Yuan , MI Sheng-Quan , LIU Shu-Tian , YUAN Jian . Measurements of 41Ca in Biological Samples by AMS Using CaF2 Target. Chinese Physics C, 2005, 29(12): 1210-1213.
[9]	XIE Jia-Lin , WANG Fa-Ya , YANG Xue-Ping , SHEN Bin , GU Wei , ZHANG Li-Wen . Proof-of-Principle Research on a Novel Compact Linac. Chinese Physics C, 2004, 28(2): 105-109.
[10]	XING Qing-Zi , LIN Yu-Zheng , FU Shi-Nian , FANG Shou-Xian . Study of Simultaneous Acceleration of Positive and Negative Ion Beams by Dynamic Simulation in RFQ. Chinese Physics C, 2004, 28(6): 659-663.
[11]	XING Qing-Zi , FU Shi-Nian , LIN Yu-Zheng , FANG Shou-Xian . Calculation of Beam Acceptance for RFQ Accelerators. Chinese Physics C, 2003, 27(7): 628-632.
[12]	WANG Shu-Hong , YE Qiang , CAO Jian-She , MA Li , LIU Yu-Cheng , LE Qi , PEI Guo-Xi , ZHANG Jia-Fei . Emittance Measurement by Multi-Changing Focusing Strength. Chinese Physics C, 2002, 26(11): 1184-1188.
[13]	WANG ShuiQing . Calculation of the Electron Trajectory for 200kV Self-shielded Electron Accelerator. Chinese Physics C, 2000, 24(6): 573-577.
[14]	Tang Jingyu , Lei Wen , Wang Yifang . Beam Loss in HIRFL-CSR Due to CollisionsWith Residual Gas in Vacuum. Chinese Physics C, 1998, 22(8): 745-754.
[15]	Chen Yinbao , Huang Zhibin , FuShinian . Scaling Law of Emittance Growth for Bunched Beam with Gaussian Density Distribution in Both Longitudinal and Transverse Directions in Linac. Chinese Physics C, 1997, 21(7): 657-663.
[16]	Luo Zihua , Wang Shuhong . Design and Study of Beam Dynamics for the BPL-RFQ. Chinese Physics C, 1995, 19(7): 658-666.
[17]	WANG Shu-Hong . RFQ's Beam Dynamics and RF Structure. Chinese Physics C, 1993, 17(4): 310-321.
[18]	YIN Zhao-Sheng , XU Jian-Ming . SOME METHODS OF PRODUCING LOCAL SKEW QUADRUPOLE FIELD IN ACCELERATOR RING. Chinese Physics C, 1988, 12(3): 361-364.
[19]	WEI Kai-Yu , LIN Zhen-Hua , LÜ Ji-Hua , WANG Shu-Hong , LUO Zi-Hua , SUN Song-Lan , ZHU Ren-Quan . DESIGN AND BEAM TEST FOR THE BPL 35.5MeV BEAM TRANSPORT SYSTEM. Chinese Physics C, 1987, 11(4): 571-576.
[20]	LUO Zi-Hua , WANG Shu-Hong . BEAM MATCHING CALCULATIONS IN TRANSVERSE MOTION FOR THE 10MeV BEIJING PROTON LINAC. Chinese Physics C, 1985, 9(2): 191-199.

Access

Get Citation

XU Jian-Ming and LIU Shi-Yao. A PROPOSAL FOR THE MEASUREMENT OF THE REAL EMITTANCE OF THE BEAM IN CYCLIC ACCELERATORS[J]. Chinese Physics C, 1983, 7(2): 178-185.

XU Jian-Ming and LIU Shi-Yao. A PROPOSAL FOR THE MEASUREMENT OF THE REAL EMITTANCE OF THE BEAM IN CYCLIC ACCELERATORS[J]. Chinese Physics C, 1983, 7(2): 178-185. shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 1900-01-01
Revised: 1900-01-01

Article Metric

Article Views(2158)
PDF Downloads(459)
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

A PROPOSAL FOR THE MEASUREMENT OF THE REAL EMITTANCE OF THE BEAM IN CYCLIC ACCELERATORS

XU Jian-Ming ^,
LIU Shi-Yao

Corresponding author: XU Jian-Ming,

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1983-04-05

Abstract: In this paper, the envelope of numatched beam in the periodic focusing system is analyzed and the expression of beam cross section is given. We find that, by using the commonly used methods, we can't get the real emittance of the beam in the ring accelerators, but can only get the acceptance of the accelerator corresponding to the maximum aperature filled by the beam.
In this paper, we propose to measure the beam envelope by a thin plastic scintillation filament. And from the measured data we can get the real emittance of the beam. At the same time, we can get the tune values, the coherent oscillation amplitude and its frequency and the closed orbit distortion.