Tuning and Measuring of RFQ with Resonantly Coupled Segments

OUYANG Hua-Fu; FU Shi-Nian

Chinese Physics C> 2003, Vol. 27> Issue(6) : 551-554

Tuning and Measuring of RFQ with Resonantly Coupled Segments

OUYANG Hua-Fu ^, ,
FU Shi-Nian

Institute of High Energy Physics, CAS, Beijing 100039, China

Abstract
HTML
Reference
Related

PDF

Abstract：
Tuning and measuring on a 3-meter aluminum RFQ cold model with three resonantly coupled segments is carried out, RF electric field distribution with flatness better than 4 percent is obtained. The reason for the formation of RF electric distribution steps at the location of coupling cells is described, and the relation of the step size and the local resonant frequency difference between the two sides of coupling cell is also given. With this relation, the RF electric field distribution steps at the location of coupling cells can be removed in one tuning operation. The best tuning procedure is finally determined. Following this procedure, the tuning of RFQ with several resonantly coupled segments is easy and fast.

References

[1]	. TRASO_AC Group.Status of TRASCO.Internal Report INFN-TC-0023,21—242. Wangler T P.Principles of RF Linear Accelerators.John Willy Sons,INC,1998,Chap.8 3. Comuninan M et al.TRASCO RFQ Design.EPAC2000,Vienna,2000,927—9294. Slater J C.Microwave Electronics. D.Van Nostrand,Princeton,N. J.,1950,80

[1]	Jing Wang , Jian-Long Huang , Xiao-Qi Zhang , Bin Zhang , Yuan He , Zhou-Li Zhang , Ai-Min Shi . Frequency tuning with RFQ temperature in China ADS Injector Ⅱ. Chinese Physics C, 2016, 40(3): 037003. doi: 10.1088/1674-1137/40/3/037003
[2]	SHI Ai-Min , SUN Lie-Peng , ZHANG Zhou-Li , XU Xian-Bo , SHI Long-Bo , LI Chen-Xing , WANG Wen-Bin . Design of the new couplers for C-ADS RFQ. Chinese Physics C, 2015, 39(4): 047004. doi: 10.1088/1674-1137/39/4/047004
[3]	XIAO Chen , HE Yuan , LU Yuan-Rong , Yuri Batygin , YIN Ling , WANG Zhi-Jun , YUAN You-Jin , LIU Yong , CHANG Wei , DU Xiao-Nan , WANG Zhi , XIA Jia-Wen . A Particle-in-cell scheme of the RFQ in the SSC-Linac. Chinese Physics C, 2010, 34(11): 1749-1753. doi: 10.1088/1674-1137/34/11/016
[4]	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
[5]	CHEN Jia-Er , GUO Zhi-Yu , FU Shi-Nian , FANG Jia-Xun , LU Yuan-Rong , YAN Xue-Qing . Studies on RFQ accelerators and its applications. Chinese Physics C, 2009, 33(10): 926-929. doi: 10.1088/1674-1137/33/10/019
[6]	WANG Yue , HUANG Wen-Xue , TIAN Yu-Lin , ZHU Zhi-Chao , XU Hu-Shan , XIAO Guo-Qing , ZHAN Wen-Long . Latest progress of the RFQ cooler and buncher RFQ1L. Chinese Physics C, 2008, 32(S2): 222-224.
[7]	OUYANG Hua-Fu , YAO Yuan . Thermal Analysis of CSNS RFQ. Chinese Physics C, 2007, 31(12): 1116-1121.
[8]	GUO Zhi-Yu , XIE Yi , LIU Ke-Xin , FANG Jia-Xun , YANG Xue-Qing , CHEN Jia-Rong . Physical Design of A Low-Energy-Spread RFQ Accelerator. Chinese Physics C, 2006, 30(S1): 114-116.
[9]	HUANG Wen-Xue , WANG Yue , ZHU Zhi-Chao , TIAN Yu-Lin , XU Hu-Shan , SUN Zhi-Yu , XIAO Guo-Qing , ZHAN Wen-Long . Experimental Study of the High-Voltage Breakdown and Simulations for the RFQ Cooler and Buncher RFQ1L. Chinese Physics C, 2006, 30(S2): 261-264.
[10]	FANG Jia-Xun , YANG Xue-Qing , LI Wei-Guo , GUO Zhi-Yu , GUO Jiu-Fang , LU Yuan-Rong , GAO Shu-Li , ZHU Kun , WANG Zhi , YU Mao-Lin , CHEN Jia-Rong . Study of physical Performances for Separated Function RFQ. Chinese Physics C, 2006, 30(S1): 16-18.
[11]	FU Shi-Nian , OUYANG Hua-Fu , XU Tao-Guang . Study on the Function of Dipole Stabilizer Rods in an RFQ Accelerator. Chinese Physics C, 2005, 29(3): 295-300.
[12]	HUANG Wen-Xue , WANG Yue , XU Hu-Shan , SUN Zhi-Yu , LI Zhan-Kui , XIAO Guo-Qing , ZHAN Wen-Long . Extraction System for RFQ Cooler and Buncher. Chinese Physics C, 2005, 29(8): 802-805.
[13]	HUANG Wen-Xue , WANG Yue , XU Hu-Shan , SUN Zhi-Yu , XIAO Guo-Qing , ZHAN Wen-Long . RFQ Cooler and Buncher for Radioactive Ion Beam. Chinese Physics C, 2004, 28(S1): 90-92.
[14]	GUO Zhi-Yu , FANG Jia-Xun , GUO Ju-Fang , LI Wei-Guo , YU Mao-Lin , GAO Shu-Li , GUAN Xia-Ling , FU Shi-Nian , OUYANG Hua-Fu , XU Wen-Wu , XU Tao-Guang . Development and Measurements of a Technological Cavity for 350MHz High Current Proton RFQ. Chinese Physics C, 2004, 28(7): 762-766.
[15]	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.
[16]	FU Shi-Nian . Study on the Field Tuning Method of a Resonantly Coupled RFQ. Chinese Physics C, 2002, 26(8): 870-875.
[17]	WANG Shu-Hong . RFQ's Beam Dynamics and RF Structure. Chinese Physics C, 1993, 17(4): 310-321.
[18]	LUO ZI-HUA , LUO YING-XIONG , WANG LIN-LIN . STUDY OF THE BEAM TRAMSVERSE MOTION IN THE RFQ STRUCTURE. Chinese Physics C, 1982, 6(6): 688-696.
[19]	LOU ZI-HUA . REDUCTION OF THE BEAM ENERGY SPREAD OF RFQ BY DEBUNCHER. Chinese Physics C, 1982, 6(4): 507-511.
[20]	WG SHU-HIUNG . BEAM DYNAMICS DESIGN STUDY FOR RFQ LINAC. Chinese Physics C, 1982, 6(4): 428-434.

Access

Get Citation

OUYANG Hua-Fu and FU Shi-Nian. Tuning and Measuring of RFQ with Resonantly Coupled Segments[J]. Chinese Physics C, 2003, 27(6): 551-554.

OUYANG Hua-Fu and FU Shi-Nian. Tuning and Measuring of RFQ with Resonantly Coupled Segments[J]. Chinese Physics C, 2003, 27(6): 551-554. shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2002-08-16
Revised: 1900-01-01

Article Metric

Article Views(2759)
PDF Downloads(589)
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

Tuning and Measuring of RFQ with Resonantly Coupled Segments

OUYANG Hua-Fu ^,
FU Shi-Nian

Corresponding author: OUYANG Hua-Fu,

Institute of High Energy Physics, CAS, Beijing 100039, China

Received Date: 2002-08-16
Accepted Date: 1900-01-01
Available Online: 2003-06-05

Abstract: Tuning and measuring on a 3-meter aluminum RFQ cold model with three resonantly coupled segments is carried out, RF electric field distribution with flatness better than 4 percent is obtained. The reason for the formation of RF electric distribution steps at the location of coupling cells is described, and the relation of the step size and the local resonant frequency difference between the two sides of coupling cell is also given. With this relation, the RF electric field distribution steps at the location of coupling cells can be removed in one tuning operation. The best tuning procedure is finally determined. Following this procedure, the tuning of RFQ with several resonantly coupled segments is easy and fast.