Author: Gong, L.
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WEPMR047 Overall Design of Magnet Girder System for Heps-Tf 2383
 
  • H. Wang, L. Gong, C.H. Li, S. Li, H. Qu, Z. Wang, L. Wu
    IHEP, Beijing, People's Republic of China
 
  HEPS-TF is the test facility of HEPS (High Energy Pho-ton Source) of China. The magnet girders are used for supporting and positioning of the magnets. As the beam emittance is very low, the girder must has high adjusting precision and high stability. Besides, the girder should also be beam-based aligned. For these issues, two girder systems are designed. Both of them use cam mover mech-anisms for precision adjustment. One has six cam mover mechanisms and another has eight. The design aim of the alignment accuracy between girders is within 50 μm, and the adjusting resolution is within 3μm. The design aim of the natural frequency is above 30 Hz. This paper will discuss the scheme selection and structural design of the girder systems.  
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-WEPMR047  
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WEPMR048 Hall Element Relative Position and Angle Calibrations for the Cryogenic Permanent Magnet Undulator 2386
SUPSS108   use link to see paper's listing under its alternate paper code  
 
  • L. Gong, W. Chen, W. Kang, L.Z. Li, H.H. Lu, Y.F. Yang
    IHEP, Beijing, People's Republic of China
 
  A three dimensions Hall probe will be manufactured for characterizing the magnetic performance of Cryogenic Permanent Magnet Undulator (CPMU) of Chinese High Energy Photon Source and the test facility (HEPS-TF) at Institute of High Energy Physics (IHEP). The positional and angular misalignment errors of the Hall sensors play an important role in the measurement accuracy of CPMU. In order to minimize the misalignment errors, a method of calibrating relative displacements and assembly angles of a 3-D Hall probe is carried out. In this paper, details of the calibration procedures and the data processing are presented.  
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-WEPMR048  
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