Magnetic Field Measurements of an HTS Retrofit Synchrotron Dipole

Author

Muratore, J. ; Escallier, J. ; Ganetis, G. ; Ghosh, A.K. ; Gupta, R.C. ; He, P. ; Jain, A. ; Joshi, P. ; Wanderer, P. ; Fee, M. ; Christian, M.

Author_Institution

Brookhaven Nat. Lab., Upton, NY, USA

Volume

21

Issue

3

fYear

2011

fDate

6/1/2011 12:00:00 AM

Firstpage

1653

Lastpage

1656

Abstract

A copper coil dipole magnet from the National Synchrotron Light Source (NSLS) at Brookhaven National Laboratory (BNL) has been retrofitted by HTS-110 Ltd with coils made from Bi-2223 wire and a self-contained cryogenic cooling system, while keeping the magnet´s original iron yoke. This modified bending dipole, which is the first such known retrofit HTS-based accelerator magnet, provides the benefits of a compact coil design to accommodate space-limited experimental issues and a significant reduction in power costs as compared to the original copper magnet. In order to validate this modified design for use in the synchrotron, a detailed magnetic field map has been measured using a multiple-Hall probe assembly and transporter system. The results are discussed in this paper, along with the performance of the closed circuit cryogenics system in keeping the coils below 45 K.

Keywords

accelerator magnets; bismuth compounds; copper; high-temperature superconductors; magnetic field measurement; superconducting coils; superconducting magnets; synchrotrons; Bi-2223 wire; HTS retrofit synchrotron dipole; HTS-based accelerator magnet; NSLS; National Synchrotron Light Source; closed circuit cryogenics system; compact coil design; copper coil dipole magnet; iron yoke; magnetic field map; magnetic field measurement; multiple-Hall probe assembly; self-contained cryogenic cooling system; transporter system; Coils; Copper; High temperature superconductors; Magnetic hysteresis; Saturation magnetization; Storage rings; Superconducting magnets; Accelerator magnets; Bi-2223 tape conductor; HTS; high temperature superconductor; magnetic field measurements; superconducting magnets;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2010.2091935

Filename

5672555