A new method for compensation and rematch of cavity failure in the C-ADS linac

Zhou Xue; Jian-Ping Dai; Cai Meng

doi:10.1088/1674-1137/40/6/067003

Chinese Physics C> 2016, Vol. 40> Issue(6) : 067003 DOI: 10.1088/1674-1137/40/6/067003

A new method for compensation and rematch of cavity failure in the C-ADS linac

Zhou Xue ^1,2 ,
Jian-Ping Dai ^2,, ,
Cai Meng ²

1.
University of Chinese Academy of Sciences, Beijing 100049, China
2.
Institute of High Energy Physics(IHEP), Chinese Academy of Sciences, Beijing 100049, China
3.
Institute of High Energy Physics(IHEP), Chinese Academy of Sciences, Beijing 100049, China

Abstract
HTML
Reference
Related

PDF

Abstract：
For proton linear accelerators used in applications such as accelerator-driven systems, due to the nature of the operation, it is essential for the beam failure rate to be several orders of magnitude lower than usual performance of similar accelerators. A fault-tolerant mechanism should be mandatorily imposed in order to maintain short recovery time, high uptime and extremely low frequency of beam loss. This paper proposes an innovative and challenging way for compensation and rematch of cavity failure using fast electronic devices and Field Programmable Gate Arrays (FPGAs) instead of embedded computers to complete the computation of beam dynamics. A method of building an equivalent model for the FPGA, with optimization using a genetic algorithm, is shown. Results based on the model and algorithm are compared with TRACEWIN simulation to show the precision and correctness of the mechanism.
- compensation ,
- rematch ,
- FPGA ,
- modeling algorithm

References

[1]	Jing-Yu Tang, and Zhi-Hui Li et al, Edited, Conceptual Physics design on the C-ADS accelerator, IHEP-CADS-Report/2012-01E
[2]	Zhi-Hui Li et al, Physical Review Special Topics-Accelerators and Beams 16:080101(2013)
[3]	Jean-Luc Biarrotte, and Didier Uriot, Physical review special topics-Accelerators and beams, 11:(072803):1-11(2008)
[4]	J. Galambos, S. Henderson, Y. Zhang, A Fault Recovery System For the SNS Superconducting Cavity LINAC, Proceedings of LINAC, Knoxville, Tennessee USA 2006
[5]	Biao Sun, Fang Yan et al, Chinese Physics C, 39(11):117003(2015)
[6]	D. Uriot, TraceWin Documentation, CEA/SACLAY-DSM/Irfu/SACM, 2014
[7]	K. R. Crandall, and D. P. Rusthoi, TRACE 3-D Documentation, LA-UR-97-886, Third Edition, May 1997
[8]	J. Galambos, S. Henderson, A. Shishlo, Y. Zhang, Operational Experience of a Superconducting Cavity Fault Recovery System at the Spallation Neutron Source, Proceedings of the Workshop on Utilisation and Reliability of High Power Proton Accelerators (HPPA5), 6-9 May 2007, Mol, Belgium, (2008), p. 161
[9]	M. Jordan, J. Kleinberg, B. Schlkopf, Pattern Recognition and Machine Learning, Springer Science + Business Media, LLC, p138-139(2006)
[10]	Jie Chen, Matlab Manual, Publishing House of Electronics Industry, p152-158(2013)(in Chinese)
[11]	Frank J. Sacherer, Rms Envelope Equations with Space Charge, IEEE Trans:p1105-1107(1971)
[12]	Jin-Hai Li, Jing-Yu Tang, Hua-Fu Ouyang, Chinese Physics C, 33 (10):905-913(2009)
[13]	G. Poplau, U. van Rienen, An efficient 3D Space Charge Routine with Self-Adaptive Discretization, Proceedings of ICAP09, San Francisco, CA
[14]	P. Sing Babu, A. Goswami, V. S. Pandit, Physics Letters A, 376:3192-3198(2012)
[15]	David E, Goldberg, Genetic Algorithms in Search, Optimization, and Machine Learning, Addison-Wesley, 1989
[16]	J. Guyard, and M. Weiss, Use Of Beam Emittance Measurements In Matching Problems, Proc. 1976 Proton Linear Accel. Conf., Chalk River, Ontario, Canada

Access

Get Citation

Zhou Xue, Jian-Ping Dai and Cai Meng. A new method for compensation and rematch of cavity failure in the C-ADS linac[J]. Chinese Physics C, 2016, 40(6): 067003. doi: 10.1088/1674-1137/40/6/067003

Zhou Xue, Jian-Ping Dai and Cai Meng. A new method for compensation and rematch of cavity failure in the C-ADS linac[J]. Chinese Physics C, 2016, 40(6): 067003. doi: 10.1088/1674-1137/40/6/067003 shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2015-10-08

Fund

Supported by China ADS Project (XDA03020600) and Natural Science Foundation of China (11575216)

Article Metric

Article Views(2716)
PDF Downloads(371)
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 new method for compensation and rematch of cavity failure in the C-ADS linac

Corresponding author: Jian-Ping Dai,

1. University of Chinese Academy of Sciences, Beijing 100049, China
2. Institute of High Energy Physics(IHEP), Chinese Academy of Sciences, Beijing 100049, China
3. Institute of High Energy Physics(IHEP), Chinese Academy of Sciences, Beijing 100049, China

Received Date: 2015-10-08
Available Online: 2016-06-05

Fund Project: Supported by China ADS Project (XDA03020600) and Natural Science Foundation of China (11575216)

Abstract: For proton linear accelerators used in applications such as accelerator-driven systems, due to the nature of the operation, it is essential for the beam failure rate to be several orders of magnitude lower than usual performance of similar accelerators. A fault-tolerant mechanism should be mandatorily imposed in order to maintain short recovery time, high uptime and extremely low frequency of beam loss. This paper proposes an innovative and challenging way for compensation and rematch of cavity failure using fast electronic devices and Field Programmable Gate Arrays (FPGAs) instead of embedded computers to complete the computation of beam dynamics. A method of building an equivalent model for the FPGA, with optimization using a genetic algorithm, is shown. Results based on the model and algorithm are compared with TRACEWIN simulation to show the precision and correctness of the mechanism.