|
Abstract
| A 55 MJ magnet has been installed and commissioned at CERN for the rapid cycling bubble chamber of the EHS experiment (European hybrid spectrometer). The magnet consists of two separate circular coils, assembled with their axis horizontal into a massive iron structure, and provides a central field of 3 T in a useful volume of 1.4 m in diameter and 0.82 m gap with a completely azimuthally free acceptance of +or-18 degrees from the central plane. Special features of the magnet, which is otherwise of a classical pancake-type, bath-cooled design, are a relatively high average current density (2500 A/cm/sup 2 /) and an elaborate support structure required by the particular force configuration within the iron structure. (2 refs). |