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

Volume

24

Issue

3

fYear

2014

fDate

Jun-14

Firstpage

1

Lastpage

4

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;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2013.2286399

Filename

6637015