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Measurement of the ripple of magnet power supply and its effect to the beam energy

Abstract

Objective:

This study is aimed at measuring the ripple of magnetic power supply of BEPCII and checking its effect to beam energy.

Materials and methods:

A sensor made of printed circuit board coils is designed and manufactured. The sensor was inserted into a good area region of the magnetic field with the surface perpendicular to the field force lines. The change of the magnetic field would be detected according to Faraday’s law.

Results:

The experiment result indicates that the time-dependent ripple of the magnetic field is in the magnitude of ppm.

Conclusion:

Such a small effect of the time-dependent ripplecan be negligibleto beam energy.

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Notes

  1. The good area region of magnetic field means the magnetic force lines go through the vacuum box uniformly and vertically.

  2. Mils is a unit of length, 1 mils means one thousand of inch, namely 0.0254 mm.

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Authors

Corresponding author

Correspondence to Jian-Yong Zhang.

Additional information

This work is supported in part by National Natural Science Foundation of China (NSFC) under Contracts Nos.: 11375206, 10775142, 10825524, 11125525 and 11235011.

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Zhang, JY., Cai, X., Mo, XH. et al. Measurement of the ripple of magnet power supply and its effect to the beam energy. Radiat Detect Technol Methods 1, 7 (2017). https://doi.org/10.1007/s41605-017-0008-0

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  • DOI: https://doi.org/10.1007/s41605-017-0008-0

Keywords

  • Laser
  • HPGe detector
  • Beam energy measurement

PACS

  • 29.00.00
  • 29.30.Kv
  • 78.40.Fy