Status of the superconducting magnet for the Alpha Magnetic Spectrometer

The Alpha Magnetic Spectrometer (AMS) is a particle physics experiment based on the International Space Station (ISS). At the heart of the detector is a large superconducting magnet, cooled to a temperature of 1.8 K by superfluid helium. The magnet and cryogenic system are currently under construction by Space Cryomagnetics Ltd of Culham, England. This paper describes the current status of the design and manufacture of the magnet system-including test results from the fourteen superconducting coils-and outlines the remaining work required to complete the project.