Author: Liu, Y.D.
Paper Title Page
TUOBA1 Beam Commissioning Results of the CSNS Linac 1223
 
  • J. Peng, Y.W. An, S. Fu, L. Huang, M.Y. Huang, Y. Li, Z.P. Li, S. Wang, S.Y. Xu, Y. Yuan
    IHEP, Beijing, People's Republic of China
  • M.T. Li, Y.D. Liu
    CSNS, Guangdong Province, People's Republic of China
 
  The China Spallation Neutron Source(CSNS) accelera-tor systems is designed to deliver a 1.6GeV, 100kW pro-ton beam to a solid metal target for neutron scattering research. It consists of a 50keV H Ion Source, a 3MeV Radio Frequency Quadrupole (RFQ), an 80MeV Drift Tube Linac (DTL), and a 1.6GeV Rapid-cycling Synchro-tron (RCS). The beam commissioning has been started since April 2015. The Front End and three of the four DTL tanks have been commissioned, while the last tank and the RCS will be commissioned at the autumn this year. At the end of the DTL3, beam has been accelerated to 61MeV with nearly 100% transmission, other parame-ters such as peak current, transverse emittance and beam orbit have reached the design goal. Results and status of the beam commissioning program will be presented.
*This work is supported by National Natural Science Foundation of China (11505101).
**E-mail:pengjun@ihep.ac.cn
 
slides icon Slides TUOBA1 [4.272 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUOBA1  
Export • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)  
 
TUPVA099 Preparation for the CSNS-RCS Commissioning 2317
 
  • Y.W. An, Y.D. Liu, Y. Liu, S. Wang, S.Y. Xu
    IHEP, Beijing, People's Republic of China
 
  Funding: Work supported by National Natural Science Foundation of China (11405189)
As a key part of the China Spallation Neutron Source (CSNS) Project, the Rapid Cycling Synchrotron (RCS) accumulates and accelerates the proton beam from 80MeV to 1.6GeV for extracting and striking the target with a repetition rate of 25Hz. As a commissioning plan, the BPM offset should be carefully investigated before closed orbit distortion (COD) correction. The fast response correctors are installed to correct orbit distortion and model the lattice of the RCS in every 1ms period. The bunch-by-bunch data from BPMs are collected and decomposed for better known of the RCS Lattice.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPVA099  
Export • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)  
 
TUPVA106 Solvements of the Asynchronization between the Bpms and Corrector Power Supplies in RCS of CSNS* 2339
 
  • M.T. Li
    CSNS, Guangdong Province, People's Republic of China
  • Y.W. An, Y.D. Liu
    IHEP, Beijing, People's Republic of China
 
  Funding: Work supported by the National Natural Science Foundation of China ( Grant No. 11405189)
This paper studies the possible solvements of the asyn-chronization between the BPMs and Corrector Supplies in RCS of CSNS, to increase the accuracy of the response matrix measurement and the obit correction.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPVA106  
Export • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)  
 
WEPIK024 HTS-Coated Beam Screen for SPPC Bending Magnets 2974
SUSPSIK007   use link to see paper's listing under its alternate paper code  
 
  • P.P. Gan, Q. Fu, H.P. Li, Y.R. Lu, K. Zhu
    PKU, Beijing, People's Republic of China
  • Y.D. Liu, J.Y. Tang, Q.J. Xu
    IHEP, Beijing, People's Republic of China
 
  For studying new physics beyond the Standard Model, Supper proton-proton Collider (SPPC) with a circumfer-ence of 100 km and a centre mass energy of 100 TeV is proposed and under study in China. Due to the high particle energies and 16 T high magnet field, the synchrotron radiation power emitted from the proton beams reaches 48.5 W/m in the bending magnets, two orders of magnitude higher than that of LHC. A novel beam screen is anticipated to screen cold chamber walls from the massive synchrotron radiation power and transfer the heat load to cryogenic cooling fluid. For drastically reducing resistive wall impedance and saving refrigerator power, we have studied high temperature superconductor (HTS) coated beam screen operating in liquid nitrogen temperature area. Singly from the point of temperature, the feasibility of HTS-coated beam screen is demonstrated by steady-state thermal analysis. Two kinds of potential HTS material are also discussed in this paper.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-WEPIK024  
Export • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)