Author: Kim, E.-S.
Paper Title Page
MOPB66
 Optimization of the Interferometry Beam Size Monitor in PLS-II  
 
  • J.G. Hwang
    Kyungpook National University, Daegu, Republic of Korea
  • J.Y. Huang, C. Kim, G.H. Kim, H.-S. Lee, S. Shin
    PAL, Pohang, Kyungbuk, Republic of Korea
  • E.-S. Kim
    KNU, Deagu, Republic of Korea
  • H.K. Park
    CHEP, Daegu, Republic of Korea
  
  Pohang Light Source-II (PLS-II) is recently upgraded to 3 GeV and the circumference, beam current, emittance of PLS-II storage ring are 281.82 m, 100 mA and 5.7 nm-rad, respectively. The storage ring includes an interferometry beam size monitor system in 2B beam line. It consists of the quadrature slit, lens, 650 nm wave-length filter and CCD camera. We will present the measurement results and the issues to optimize the beam size monitor system in the beam line.  
 
TUPA14
 Development of Cavity-type Beam Position Monitors with High Resolution for ATF2  
 
  • S.W. Jang, A. Heo, E.-S. Kim
    KNU, Deagu, Republic of Korea
  • Y. Honda, T. Tauchi, N. Terunuma
    KEK, Ibaraki, Japan
  • J.G. Hwang
    Kyungpook National University, Daegu, Republic of Korea
  
  We have developed a high resolution beam position monitors for ATF2 at KEK, which is an accelerator test facility for International Linear Collider(ILC). The main goals of ATF2 are achievement of 37nm beam size and 2nm beam position resolution for beam stabilization. For these goals, low-Q IP-BPM(Interaction Point Beam Position Monitor) with latency of 20 ns are being developed. In this paper, we will describe about design of Low-Q IP-BPM, the basics test results as RF test and BPM sensitivity test. An electronics for Low-Q IP-BPM will be also described.