Future Accelerator Magnet Needs

Abstract

Abstract-Superconducting magnet technology is continually evolving in order to meet the demanding needs of new accelerators and to provide necessary upgrades for existing machines. A variety of designs are now under development, including high fields and gradients, rapid cycling and novel coil configurations. This paper presents a summary of R&D programs in the EU, Japan and the USA. A performance comparison between NbTi and Nb 3 Sn along with fabrication and cost issues are also discussed.

ARIES-CS Magnet Conductor and Structure Evaluation

“…The cost of the superconducting material has been assumed to be $5000kg~2003 dollars!, slightly higher than some HEP experience 34,35 but substantially higher than what might be expected in the future. 33 The cost of the stabilizer~copper!…”

Status of the Next European Dipole (NED) Activity of the Collaborated Accelerator Research in Europe (CARE) Project

“…It can be used also to upgrade an existing superconducting cable test facility at CERN, presently limited to a 10-T background field [5]. The NED activity is also meant to complement the vigorous efforts on accelerator magnet technology carried out in the USA within the framework of the US-LHC Accelerator Research Program (LARP) [6] or as part independently-funded base programs at Lawrence Berkeley National Laboratory [7] and Fermi National Accelerator Laboratory [8].…”

Active compensation of field errors within ±2ppm in superconducting magnets

“…Nowadays, the predominant material used in superconducting magnet coils of high-performance accelerators is NbTi, owing to its straightforward coil winding and cost effectiveness [2]- [3]. The advent of a reliable Nb 3 Sn technology will increase the maximum value of the generated field to beyond 10 T for future needs [4]- [5]. However, superconducting magnets are affected by higher-order multipoles and anomalous dynamic behavior of the magnetic field [6].…”