Field Measurements of Magnets for Modern SR Sources and FEL

Autor: I. I. Morozov, Valeriy Kobets, Alexandr Batrakov, Ivan Okunev
Rok vydání: 2016
Předmět:
Zdroj: IEEE Transactions on Applied Superconductivity. 26:1-5
ISSN: 1558-2515
1051-8223
DOI: 10.1109/tasc.2016.2544105
Popis: Magnets for modern accelerators and storage rings may have a rather complex field distribution and strict quality requirements. The Budker Institute of Nuclear Physics (Novosibirsk, Russia) is a well-known producer of magnets for various accelerator projects worldwide. This paper describes our magnet measurement facility with examples of NSLS-II booster magnets, small-aperture X-FEL quadrupoles, and PETRA-III dipoles. NSLS-II booster dipoles have quadrupole and sextupole components with a rather high field quality of $1\cdot 10^{-3}$ in the good field region of ±2 cm, providing booster operation at energy from 170 MeV to 3.15 GeV with a 2-Hz repetition rate. We designed a special bench with a ceramic rotation coil to measure X-FEL quadrupoles. The equipment provided measurements of the magnetic axis with accuracy better than 5 $\mu\text{m}$ . We used the system of three temperature-stabilized Hall sensor arrays distributed vertically to obtain a three-dimensional field map from a single measurement of PETRA-III dipole magnets.
Databáze: OpenAIRE