Diagnosis of Individual Cell Frequencies in a Coupled Cavity Chain by Genetic Algorithms

NI Yi; TONG De-Chun; LIN Yu-Zheng

Chinese Physics C> 2001, Vol. 25> Issue(7) : 689-695

Diagnosis of Individual Cell Frequencies in a Coupled Cavity Chain by Genetic Algorithms

Department of Engineering Physics, Tsinghua University, Beijing 100084, China

Abstract
HTML
Reference
Related

PDF

Abstract：
Genetic algorithms (GAs) is used to diagnose individual call frequencies in a coupled cavity chain with no need of any probe insertion. The cell frequencies and couplings between the cells are determined in terms of the measured pass-band performance. It will simplify the tuning processes and make the tuning of the sealed cavity possible. The solution is cast as an optimization problem and GAs is used as a function optimizer to solve this problem. Moreover, in order to expedite the convergence, nonlinear least squares method is added as one kind of mutation into GAs, which makes GAs converge faster and improves the precision of the solution. The effectiveness of the new technique has been demonstrated through some numerical examples, and the results have also been compared with those of the conventional GAs.

References

[1]

. Hable E et al.Tuning of a Superconducting Accelerating Cavity Under Operating Conditions.CERN/EF/RF81-5,1981 2. YUAN Ya-Xiang et al.Theory and Method of Optimization.Beijing:Science Publishing House,1997.1— 339(in Chinese)(袁亚湘等.最优化理论与方法.北京:科学出版社,1997.1—339)3. Gay D M et al.An Adaptive Nonlinear Least-Squares Algorithm.ACM Trans.Math.Software,1981,7:348— 368 4. Michalewicz Z .Genetic Algorithms+Data Structures =Evolution Programs.New York :Springer ,1994 .1—336 5. Nagle D E et al.Coupled Resonator Model for Standing Wave Accelerator Tanks.The Review of Scientific Instruments,1967,38:1—11 6. Schriber S O.Fitting of an Ordered Set of Model Frequencies.Master Thesis,Chalk River Nuclear Laboratories,1970 7. Dennis J E et al.Algorithm 573.NL2SOL———An Adaptive Nonlinear Least-Squares Algorithm .ACM Trans.Math.Software,1981,7:369—383

[1]	XU Wen-Can , QUAN Sheng-Wen , HAO Jian-Kui , JIANG Tao , ZHANG Bao-Cheng , ZHAO Kui . Measurement and Adjustment of Dumb-Bells for 9-cell TESLA Cavity. Chinese Physics C, 2008, 32(S1): 154-156.
[2]	LI Wen-Jun , XU Zhou , LIN Yu-Zheng , SHEN Xu-Ming , LIU Jie , CHEN Ya-Nan , LI Ming , YANG Xing-Fan . Cold-Test Experimental Research of an S-Band Broadband High Power CCTWT. Chinese Physics C, 2008, 32(S1): 178-180.
[3]	PAN Wei-Min , WANG Guang-Wei , . Calculation of the External Quality Factor of the High Power Input Coupler for the BEPCII Superconducting Cavity. Chinese Physics C, 2008, 32(1): 72-74. doi: 10.1088/1674-1137/32/1/016
[4]	WANG Ju-Xia , YANG Zhi-Yong , AN Yu-Ying . Quantum Information Transfer in the Process of Coupled Atoms Interacting with Cavity Fields. Chinese Physics C, 2007, 31(2): 204-208.
[5]	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.
[6]	GE Ming-Qi , ZHAO Sheng-Chu , SUN Hong , GAO Jie . Design study on 1.3GHz Mono-cell High Gradient Low Loss Superconducting Cavity. Chinese Physics C, 2006, 30(4): 354-358.
[7]	ZHONG Juan , PAN Wei-Min . Study on the Performance of the Input Coupler for the BEPCⅡ Superconducting RF Cavity. Chinese Physics C, 2006, 30(10): 1014-1017.
[8]	BIAN Xiao-Hao , CHEN Huai-Bi , ZHENG Shu-Xin . Calculating of Coupling Factor for the Heterogeneous Part of Accelerating Structure. Chinese Physics C, 2006, 30(1): 62-65.
[9]	SHI Jia-Ru , ZHENG Shu-Xin , CHEN Huai-Bi . Calculating Field Distribution of a Linear Accelerator Using Equivalent Circuit Model. Chinese Physics C, 2006, 30(7): 699-703.
[10]	LI Zheng-Hong . Invetisgation of Thermal Emittance Measurement in RF Photoinjector. Chinese Physics C, 2005, 29(6): 615-618.
[11]	GE Ming-Qi , ZHAO Sheng-Chu . Lorentz Force Detuning Analysis of 700MHz Single-Cell Superconducting Cavity. Chinese Physics C, 2005, 29(4): 413-417.
[12]	BIAN Xiao-Hao , CHEN Huai-Bi , ZHENG Shu-Xin . Calculating of Coupling Factor for Double-Period Accelerating Structure. Chinese Physics C, 2005, 29(9): 900-902.
[13]	HAO Jian-Kui , HUANG Sen-Lin , ZHU Feng , QUAN Sheng-Wen , ZHAO Kui . Researches on the Electromagnetic Field in RF Superconducting Cavities. Chinese Physics C, 2005, 29(8): 806-809.
[14]	SUN Hong , ZHAO Sheng-Chu , GE Ming-Qi . Magnetic Shield for the Vertical Test System of Superconducting Cavity. Chinese Physics C, 2005, 29(10): 989-992.
[15]	SHI Jia-Ru , ZHENG Shu-Xin , CHEN Huai-Bi , TANG Chuan-Xiang . Calculating RF Parameters of Individual Cell by Electronic Field Distribution of a Coupled Cavity Chain. Chinese Physics C, 2005, 29(8): 818-823.
[16]	MA Qiao-Sheng , LI Zheng-Hong , MENG Fan-Bao , GAN Yan-Qing , LIU Zhong , CHANG An-Bi , ZHOU Chuan-Ming . Experimental Investigation Of repetitive X-band Quasi-Periodic RF Cavity for High Power Microwave Soruce. Chinese Physics C, 2005, 29(10): 1002-1005.
[17]	Zhang Mutian , Xu Taoguang , Zhou Linong , Guo Weiming . Design of Identical Cavity Coupled-Cavity Drift Tube Linac (CCDTL) Tanks. Chinese Physics C, 1999, 23(12): 1223-1230.
[18]	Ni Yi , Xiao Liling , Tong Dechun , Tian Bo , Jin Qingxiu , Huang Yuanzhong . Diagnosis of Individual Cell Frequencies in a Coupled Cavity Chain Without Introducing Objects Into the Cavity. Chinese Physics C, 1998, 22(6): 570-575.
[19]	Zu Donglin . Concept Design of a New Structure of 1.3GHz Single-Cell Superconducting Cavity. Chinese Physics C, 1996, 20(11): 1041-1052.
[20]	CHEN SEN-TU . THE COUPLED RESONATOR MODEL AND THE DISTRIBUTION OF THE ELECTRIC FIELD ON THE AXIS IN THE PERIODIC CAVITY CHAIN. Chinese Physics C, 1982, 6(5): 546-554.

Access

Get Citation

NI Yi, TONG De-Chun and LIN Yu-Zheng. Diagnosis of Individual Cell Frequencies in a Coupled Cavity Chain by Genetic Algorithms[J]. Chinese Physics C, 2001, 25(7): 689-695.

NI Yi, TONG De-Chun and LIN Yu-Zheng. Diagnosis of Individual Cell Frequencies in a Coupled Cavity Chain by Genetic Algorithms[J]. Chinese Physics C, 2001, 25(7): 689-695. shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2000-07-05
Revised: 1900-01-01

Article Metric

Article Views(2920)
PDF Downloads(628)
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

Diagnosis of Individual Cell Frequencies in a Coupled Cavity Chain by Genetic Algorithms

Corresponding author: NI Yi,

Department of Engineering Physics, Tsinghua University, Beijing 100084, China

Received Date: 2000-07-05

Accepted Date: 1900-01-01

Available Online: 2001-07-05

Abstract: Genetic algorithms (GAs) is used to diagnose individual call frequencies in a coupled cavity chain with no need of any probe insertion. The cell frequencies and couplings between the cells are determined in terms of the measured pass-band performance. It will simplify the tuning processes and make the tuning of the sealed cavity possible. The solution is cast as an optimization problem and GAs is used as a function optimizer to solve this problem. Moreover, in order to expedite the convergence, nonlinear least squares method is added as one kind of mutation into GAs, which makes GAs converge faster and improves the precision of the solution. The effectiveness of the new technique has been demonstrated through some numerical examples, and the results have also been compared with those of the conventional GAs.

HTML

Reference (1)

Diagnosis of Individual Cell Frequencies in a Coupled Cavity Chain by Genetic Algorithms

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article