Title :
Magnetic Field Measurement of the Quadrupole and Sextupole Magnets for HLS-II Storage Ring
Author :
Li, Luoqing ; Kang, Wei ; Wang, Zhen ; Li, Sinan ; Zhang, Zhenhao ; Yin, Baocai ; Zhou, J. ; Shi, Cheng
Author_Institution :
Accel. Res. Center, Inst. of High Energy Phys., Beijing, China
Abstract :
The Hefei Light Source upgrade project (HLS-II) contains 8 dipoles, 32 quadrupoles (2 spares), and 32 sextupoles (2 spares) for the storage ring. Magnets were manufactured and magnetic measurements were performed in collaboration with the Institute of High Energy Physics (IHEP), China. Magnet production and validation measurements were finished in December of 2012. Measurements for all quadrupole and sextupole magnets were performed using a harmonic coil magnetic measurements system. This paper describes the magnets and the measurement system and presents results for the integrated field strength, higher order multipole components, offsets between the mechanical and magnetic centers, and the effective length of the multipole magnets.
Keywords :
accelerator magnets; magnetic field measurement; storage rings; superconducting coils; HLS-II storage ring; Hefei light source upgrade project; IHEP; Institute of High Energy Physics; harmonic coil magnetic measurements system; higher order multipole components; integrated field strength; magnet production; magnetic center; magnetic field measurement; measurement system; mechanical center; multipole magnets; quadrupole magnet; sextupole magnet; validation measurements; Coils; Harmonic analysis; Magnetic cores; Magnetic field measurement; Probes; Saturation magnetization; Superconducting magnets; Hall probe measurement; harmonics coils; higher order multipole; quadrupole & sextupole magnets;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2013.2286399
