SRF2013 - List of Authors (Sha, P.)

Paper	Title	Page
THP098	LLRF and Data Acquisition Systems for Spoke012 Cavity Vertical Test at IHEP	1158
	J.P. Dai, H. Huang, H. Li, H.Y. Lin, P. Sha, Y. Sun, Q.Y. Wang, J. Zhang IHEP, Beijing, People's Republic of China
	Development of two Spoke 012 cavities and their vertical tests have been completed successfully at IHEP with a LLRF system and DAQ (data acquisition) system specially designed. The LLRF system is developed on the basis of the proven analog system used for the test of the BEPCII 500 MHz spare cavity. The Labview 2009-based DAQ system is in charge of the communications of the measuring instruments, the local machine and the remote machine. It also completes drawing the test curve online and obtaining the test result in real time. The data connection between Labview and EPICS is implemented. The vertical test result shows that the LLRF system and the DAQ system in operation perform stably and reliably as expected. This paper introduces the two systems and the general situation for Spoke 012 cavity vertical test.

TUP044	Surface Processing Facilities for Spoke Cavities at IHEP	508
	J.P. Dai, H. Li, L.H. Li, Q.Y. Wang, J. Zhang IHEP, Beijing, People's Republic of China P. Sha Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, Beijing, People's Republic of China
	Funding: Work supported by the "Strategic Priority Research Program" of CAS, under Grant No. XDA03020600 The China ADS injector I program is building a CW 10MeV Superconducting proton linac at IHEP. To develop the superconducting spoke-type cavities incorporated in this linac, a set of new surface processing facilities were built and successfully used to treat the Spoke012 prototype cavities. In this paper, we present the design, fabrication and operation of these facilities, including BCP, HPR and UPW, etc.

THP021	Design of the SSR021 Cavity for the Proton Accelerator Main Linac of China ADS	939
	Z.Q. Li, Y.L. Chi, Q. Ma, W.M. Pan, Y. Sun, J.Y. Tang, Q.Y. Wang, B. Xu, X.Y. Zhang IHEP, Beijing, People's Republic of China Y. He, C. Zhang, S.H. Zhang, S.X. Zhang IMP, Lanzhou, People's Republic of China H.Y. Lin, P. Sha Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, Beijing, People's Republic of China
	China ADS is a high intensity proton machine based on CW superconducting technology. It includes two injectors and one main linac. The Institute of High Energy Physics (IHEP) and the Institute of Modern Physics (IMP) of the Chinese Academy of Sciences (CAS), are responsible for developing the main linac together. This paper introduces the physics and mechanical design of the single spoke resonator (SSR021, beta021 cavity), which is used for first section of the main linac.

THP022	DEVELOPMENT OF A VERY LOW BETA SUPERCONDUCTING SINGLE SPOKE CAVITY FOR CHINA-ADS LINAC*	942
	H. Li, J.P. Dai, L.H. Li, H.Y. Lin, Q. Ma, W.M. Pan, Y. Sun, Q.Y. Wang, J. Zhang IHEP, Beijing, People's Republic of China H. Huang, P. Sha Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, Beijing, People's Republic of China
	Twelve very low Beta superconducting single spoke cavities whose Beta is only 0.12 (Spoke012) operating at 325MHz, are adopted in Injector I for China-ADS linac. This type of spoke cavity is believed to be one of the key challenges for its very low geometric Beta. So far, collaborated with Peking University and Harbin Institute of Technology, IHEP has designed, fabricated and tested the spoke012 prototype cavity successfully. This paper presents the details of the design, fabrication and vertical test results for Spoke012 prototype cavity.

THP028	The Research on Spoke 0.40 Cavity	959
	P. Sha, H. Huang Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, Beijing, People's Republic of China W.M. Pan, X.Y. Zhang IHEP, Beijing, People's Republic of China
	Spoke superconducting cavity can be used in the low-energy section of the proton accelerator. It has many significant advantages: compact structure, high value of R/Q, etc. The Chinese ADS (Accelerator Driven System) project will adopt many spoke cavities with 3 different β values (0.12, 0.21, 0.40). Spoke040 cavities (β=0.40) are used to increase the proton energy from 34 MeV to 178 MeV. Now the physical design of spoke040 cavity has been finished, and the machining are going on right now. The vertical test would be held at the end of this year.

Paper

Title

Page

LLRF and Data Acquisition Systems for Spoke012 Cavity Vertical Test at IHEP

1158

J.P. Dai, H. Huang, H. Li, H.Y. Lin, P. Sha, Y. Sun, Q.Y. Wang, J. Zhang
IHEP, Beijing, People's Republic of China

Development of two Spoke 012 cavities and their vertical tests have been completed successfully at IHEP with a LLRF system and DAQ (data acquisition) system specially designed. The LLRF system is developed on the basis of the proven analog system used for the test of the BEPCII 500 MHz spare cavity. The Labview 2009-based DAQ system is in charge of the communications of the measuring instruments, the local machine and the remote machine. It also completes drawing the test curve online and obtaining the test result in real time. The data connection between Labview and EPICS is implemented. The vertical test result shows that the LLRF system and the DAQ system in operation perform stably and reliably as expected. This paper introduces the two systems and the general situation for Spoke 012 cavity vertical test.

TUP044

Surface Processing Facilities for Spoke Cavities at IHEP

508

J.P. Dai, H. Li, L.H. Li, Q.Y. Wang, J. Zhang
IHEP, Beijing, People's Republic of China
P. Sha
Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, Beijing, People's Republic of China

Funding: Work supported by the "Strategic Priority Research Program" of CAS, under Grant No. XDA03020600
The China ADS injector I program is building a CW 10MeV Superconducting proton linac at IHEP. To develop the superconducting spoke-type cavities incorporated in this linac, a set of new surface processing facilities were built and successfully used to treat the Spoke012 prototype cavities. In this paper, we present the design, fabrication and operation of these facilities, including BCP, HPR and UPW, etc.

THP021

Design of the SSR021 Cavity for the Proton Accelerator Main Linac of China ADS

939

Z.Q. Li, Y.L. Chi, Q. Ma, W.M. Pan, Y. Sun, J.Y. Tang, Q.Y. Wang, B. Xu, X.Y. Zhang
IHEP, Beijing, People's Republic of China
Y. He, C. Zhang, S.H. Zhang, S.X. Zhang
IMP, Lanzhou, People's Republic of China
H.Y. Lin, P. Sha
Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, Beijing, People's Republic of China

China ADS is a high intensity proton machine based on CW superconducting technology. It includes two injectors and one main linac. The Institute of High Energy Physics (IHEP) and the Institute of Modern Physics (IMP) of the Chinese Academy of Sciences (CAS), are responsible for developing the main linac together. This paper introduces the physics and mechanical design of the single spoke resonator (SSR021, beta021 cavity), which is used for first section of the main linac.

THP022

DEVELOPMENT OF A VERY LOW BETA SUPERCONDUCTING SINGLE SPOKE CAVITY FOR CHINA-ADS LINAC*

942

H. Li, J.P. Dai, L.H. Li, H.Y. Lin, Q. Ma, W.M. Pan, Y. Sun, Q.Y. Wang, J. Zhang
IHEP, Beijing, People's Republic of China
H. Huang, P. Sha
Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, Beijing, People's Republic of China

Twelve very low Beta superconducting single spoke cavities whose Beta is only 0.12 (Spoke012) operating at 325MHz, are adopted in Injector I for China-ADS linac. This type of spoke cavity is believed to be one of the key challenges for its very low geometric Beta. So far, collaborated with Peking University and Harbin Institute of Technology, IHEP has designed, fabricated and tested the spoke012 prototype cavity successfully. This paper presents the details of the design, fabrication and vertical test results for Spoke012 prototype cavity.

THP028

The Research on Spoke 0.40 Cavity

959

P. Sha, H. Huang
Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, Beijing, People's Republic of China
W.M. Pan, X.Y. Zhang
IHEP, Beijing, People's Republic of China

Spoke superconducting cavity can be used in the low-energy section of the proton accelerator. It has many significant advantages: compact structure, high value of R/Q, etc. The Chinese ADS (Accelerator Driven System) project will adopt many spoke cavities with 3 different β values (0.12, 0.21, 0.40). Spoke040 cavities (β=0.40) are used to increase the proton energy from 34 MeV to 178 MeV. Now the physical design of spoke040 cavity has been finished, and the machining are going on right now. The vertical test would be held at the end of this year.