Zeus Magnet Tests

A thin superconducting solenoid was designed (on the ground of a first conceptual study carried out by INFN [1]) and built [2] at ANSALDO ABB COMPONENTI. This detector was installed in the HERA ring accelerator (DESY, Hamburg) with its relative vacuum plant, 5.5 meters transfer line, current leads cryostat, current leads, power supply, dump resistor, breakers and computer control system. The magnet was cooled down and energizated to the nominal field of 1.8 T. In spite of the double layer winding configuration, and the indirect cooling system, no quench occurred. The results of the tests (finished on Febr.’90) and preliminary analysis are reported.