IPAC2015 - List of Authors (Xue, Z.)

Paper	Title	Page
MOPTY008	Preliminary Hardware Implementation of Compensation Mechanism of Superconducting Cavity Failure in C-ADS Linac	953
	Z. Xue, J.P. Dai IHEP, Beijing, People's Republic of China L. Cheng, Y. Yang SINANO, Suzhou, People's Republic of China
	For the proton linear accelerators used in applications such as ADS, due to the nature of the operation, it is essential to have beam failures at the rate several orders of magnitude lower than usual performance of similar accelerators. In order to achieve this extremely high performance reliability requirement, in addition to hardware improvement, a failure tolerant design is mandatory. A compensation mechanism to cope with hardware failure, mainly RF failures of superconducting cavities, will be in place in order to maintain the high uptime, short recovery time and extremely low frequency of beam loss. The hardware implementation of the mechanism poses high challenges due to the extremely tight timing constraints, high logic complexity, and mostly important, high flexibility and short turnaround time due to varying operation contexts. We will explore the hardware implementation of the scheme using fast electronic devices and Field Programmable Gate Array (FPGA). In order to achieve the goals of short recovery time and flexibility in compensation algorithms, an advanced hardware design methodology including high-level synthesis will be used.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-MOPTY008
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THPF055	Status of the Superconducting Cavity Development at IHEP for the CADS Linac	3824
	F.S. He, J.P. Dai, J. Dai, X. Huang, L.H. Li, Z.Q. Li, Q. Ma, Z.H. Mi, B. Ni, W.M. Pan, X.H. Peng, T. Qi, P. Sha, G.W. Wang, Q.Y. Wang, Z. Xue, X.Y. Zhang, G.Y. Zhao IHEP, Beijing, People's Republic of China H. Huang, H.Y. Lin Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, Beijing, People's Republic of China
	IHEP (Institute of High Energy Physics) is developing a CW 10MeV proton injector and part of the 25MeV main linac for the CADS project. 14 SRF (superconducting radio frequency) spoke-012 cavities for the injector, as well as 6 SRF spoke-021 cavities for the main linac are to be beam commissioned before middle of 2016; meanwhile, VT (vertical test) of two more types of prototype cavities are to be finished with 2015, for the future phases of the project. In this paper, the VT statistics of 10 spoke012 cavities, 4 spoke021 cavities, and a 5-cell β0.82 elliptical cavity are reported; the cavity performance during beam commissioning of the TCM (test cryomodule) is reported as well.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-THPF055
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Paper

Title

Page

Preliminary Hardware Implementation of Compensation Mechanism of Superconducting Cavity Failure in C-ADS Linac

953

Z. Xue, J.P. Dai
IHEP, Beijing, People's Republic of China
L. Cheng, Y. Yang
SINANO, Suzhou, People's Republic of China

For the proton linear accelerators used in applications such as ADS, due to the nature of the operation, it is essential to have beam failures at the rate several orders of magnitude lower than usual performance of similar accelerators. In order to achieve this extremely high performance reliability requirement, in addition to hardware improvement, a failure tolerant design is mandatory. A compensation mechanism to cope with hardware failure, mainly RF failures of superconducting cavities, will be in place in order to maintain the high uptime, short recovery time and extremely low frequency of beam loss. The hardware implementation of the mechanism poses high challenges due to the extremely tight timing constraints, high logic complexity, and mostly important, high flexibility and short turnaround time due to varying operation contexts. We will explore the hardware implementation of the scheme using fast electronic devices and Field Programmable Gate Array (FPGA). In order to achieve the goals of short recovery time and flexibility in compensation algorithms, an advanced hardware design methodology including high-level synthesis will be used.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-MOPTY008

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPF055

Status of the Superconducting Cavity Development at IHEP for the CADS Linac

3824

F.S. He, J.P. Dai, J. Dai, X. Huang, L.H. Li, Z.Q. Li, Q. Ma, Z.H. Mi, B. Ni, W.M. Pan, X.H. Peng, T. Qi, P. Sha, G.W. Wang, Q.Y. Wang, Z. Xue, X.Y. Zhang, G.Y. Zhao
IHEP, Beijing, People's Republic of China
H. Huang, H.Y. Lin
Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, Beijing, People's Republic of China

IHEP (Institute of High Energy Physics) is developing a CW 10MeV proton injector and part of the 25MeV main linac for the CADS project. 14 SRF (superconducting radio frequency) spoke-012 cavities for the injector, as well as 6 SRF spoke-021 cavities for the main linac are to be beam commissioned before middle of 2016; meanwhile, VT (vertical test) of two more types of prototype cavities are to be finished with 2015, for the future phases of the project. In this paper, the VT statistics of 10 spoke012 cavities, 4 spoke021 cavities, and a 5-cell β0.82 elliptical cavity are reported; the cavity performance during beam commissioning of the TCM (test cryomodule) is reported as well.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-THPF055

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)