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Choi, J.

Paper Title Page
MOPPH058 Gun Emittance and Compact XFEL 121
 
  • T.-Y. Lee, J. Choi
    PAL, Pohang, Kyungbuk
 
  Role of gun emittance is discussed to build a compact XFEL machine. It is shown that low gun emittance plays the critical role of reducing the XFEL machine size.  
TUPPH085 Digital Power Supply for Air Core Magnet 445
 
  • S.-H. Jeong, J. Choi, D. E. Kim, K.-H. Park
    PAL, Pohang, Kyungbuk
 
  This paper presents the air core magnet power supply for the Pohang Light Source. The required current to energize the air core magnet was ±5 A with the high precision of ~2ppm resolution to accomplish a stable beam orbit correction. This power supply has been implemented using the digital signal processing technology and shows the high stability and other good responses. Various experimental results such as stability, bandwidth and simulation are given in this paper.