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Kakizaki, S.

Paper Title Page
TUP83 Results of the Magnetic Field Measurements of the DTL Quadrupole Magnets for the J-PARC 468
 
  • E. Takasaki, F. Naito, H. Tanaka, K. Yoshino
    KEK, Ibaraki
  • H. Ino, Z. Kabeya, S. Kakizaki, T. Kawasumi
    Mitsubishi Heavy Industries Ltd., Nagoya Aerospace Systems Works, Nagoya
  • T. Itou
    JAERI/LINAC, Ibaraki-ken
  
  A quadrupole electromagnet is installed in the drift tube, which has an outer diameter of 140 mm and its minimum length of 53 mm. Hence, a coil of this magnet was made by the advanced periodic reverse copper electroforming method instead of the conventional hollow conductor. Recently, 149 quadrupole electromagnets were completed and then installed in the drift tube within a high accuracy. The magnetic field measurements have been carried out with two different measurement methods at each stage of the manufacturing process. The discrepancies between the magnetic field center and the mechanical center are within about ±35 μm after installation of the quadrupole magnet inside the drift tube. This paper will describe methods and results of the magnetic field measurements.