A high temperature superconducting demonstrator coil for ARCOS: a novel toroidal magnetic spectrometer for an astroparticle physics experiment in space
M. Dam on behalf of
W.J. Burger, R. Carpentiero, E. Chesta, R. Iuppa, G. De Rijk and L. Rossi*
August 03, 2021
March 18, 2022
A magnetic spectrometer determines the signed rigidity of charged particles by measuring their trajectories in the presence of a magnetic field. High Temperature Superconducting (HTS) magnets can operate in space without the use of a cryogenic liquid. While HTS magnets have many potential applications in space, including active magnetic radiation shielding, we present the design of an HTS magnetic spectrometer with a toroidal magnet providing a bending strength of 3 T m. The toroidal magnet is about 2 m in outer diameter, 2 m in height, and requires about 60 km of 12 mm wide ReBCO HTS tape. The magnet operates with an engineering current density of 855 A/mm² at a temperature of 20 K and a peak magnetic flux density of about 12 T. In the context of the HTS Demonstrator Magnet for Space (HDMS) project, we have designed and are building a small-scale coil pack of the toroidal magnet. The demonstrator magnet consists of two racetrack-like coils enclosed with copper bands that function as current leads and layer jumps. The no-insulation winding method facilitates self-protection against quenches. A lightweight mechanical structure made from aluminum alloy supports the coils.
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