Keyword: storage-ring
Paper Title Other Keywords Page
MOVIR06 Preliminary Sirius Commissioning Results MMI, injection, booster, dipole 11
 
  • L. Liu, M.B. Alves, F.C. Arroyo, J.F. Citadini, R.H.A. Farias, J.G.R.S. Franco, R. Junqueira Leão, S.R. Marques, R.T. Neuenschwander, A.C.S. Oliveira, X.R. Resende, A.R.D. Rodrigues, C. Rodrigues, F. Rodrigues, R.M. Seraphim, F.H. de Sá
    LNLS, Campinas, Brazil
 
  Sirius is a 4th generation 3 GeV low emittance electron storage ring that is in final commissioning phase at the Brazilian Centre for Research in Energy and Materials (CNPEM) campus in Campinas, Brazil. Presently (April 2020) we have accumulated 15 mA of current, limited by vacuum, using a nonlinear kicker for injection. In this paper we report on the Sirius main commissioning results and main subsystems issues during installation and commissioning.  
video icon
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2020-MOVIR06  
About • paper received ※ 01 June 2020       paper accepted ※ 11 June 2020       issue date ※ 01 September 2020  
Export • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)  
 
WEVIR04 On-Axis Beam Accumulation Based on a Triple-Frequency RF System cavity, injection, simulation, synchrotron 40
 
  • G. Xu, S.C. Jiang
    IHEP, Beijing, People’s Republic of China
 
  Considering the incompatible off-axis injection scheme on the newly constructed light sources, we have proposed a new on-axis accumulation scheme based on the so-called triple-frequency RF system [1]. By means of additional second harmonic cavities, the original static longitudinal acceptance will be lengthened, which will provide the sufficient time to raise a full-strength kicker pulse. Through imposing the specific restriction on the RF parameters, the final bunch length can also be stretched to satisfy the functions of the conventional bunch lengthening system. In this paper, we will move on to explain how to build this complex triple-frequency RF system, and present the relevant simulation works.
[1] S.C. Jiang, G. Xu, On-axis injection scheme based on a triplefrequency rf system for diffraction-limited storage rings. Phys.
Rev. ST Accel. Beams 21, 110701 (2018).
 
video icon
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2020-WEVIR04  
About • paper received ※ 26 May 2020       paper accepted ※ 14 June 2020       issue date ※ 25 June 2020  
Export • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)  
 
WEVIR05 Longitudinal Stability with Landau Cavities at MAX IV cavity, damping, HOM, feedback 44
 
  • F.J. Cullinan, Å. Andersson, P.F. Tavares
    MAX IV Laboratory, Lund University, Lund, Sweden
 
  The use of Landau cavities was foreseen for both the 1.5 GeV and 3 GeV storage rings at the MAX IV facility from conception. Along with increasing the Touschek lifetime and reducing the emittance degradation due to intrabeam scattering, their purpose is to stabilise the beam in the longitudinal plane. They now play a crucial role in the everyday operation of the two storage rings. This paper outlines the current status and the aspects of longitudinal beam stability that are affected, positively or negatively, by the presence of Landau cavities. Their effectiveness in the two storage rings is also compared.  
video icon
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2020-WEVIR05  
About • paper received ※ 01 June 2020       paper accepted ※ 12 June 2020       issue date ※ 02 November 2020  
Export • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)