Author: Wei, Y.
Paper Title Page
TUPTY043 Analysis of Intensity-dependent Effects on LHC Transverse Tunes at Injection Energy 2108
 
  • R. De Maria, M. Giovannozzi, T. Persson, R. Tomás
    CERN, Geneva, Switzerland
  • Y. Wei
    IHEP, Beijing, People's Republic of China
 
  The LHC Run I has provided a huge amount of data that can be used to deepen the understanding of the beam behaviour. In this paper the focus is on the analysis of transverse tunes at injection energy to detect signs of intensity-dependent effects. BPM data, recording the injection oscillations of the operational beams during the ring-filling phase, have been analysed in detail to enable extracting useful information about the tune shift vs. injected beam intensity. The data processing and the results are discussed in detail, including also possible implications for future operation.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-TUPTY043  
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THPF054 XAL Development for CSNS/RCS Commissioning 3821
 
  • Y.W. An, L. Huang, W.B. Liu, Y.D. Liu, S. Wang, Y. Wei
    IHEP, Beijing, People's Republic of China
 
  Funding: Work supported by the National Natural Science Fund Committee, contract 11405189.
As a key component 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. A high level application programming framework code called XAL, based on Java Language with a well-performance online model, initially developed at the Spallation Neutron Source (SNS), has been installed as a part of control system via connection to EPICS for CSNS. Much of the applications have been initially established such as Tune Scan, Tune Monitor, Orbit Response Matrix Measurement, RCS Orbit Display, and Beta Function Measurement for preparing CSNS/RCS commissioning are showed in this paper.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-THPF054  
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