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Superconducting magnet system of the CMD-2 detector

1999; IEEE Council on Superconductivity; Volume: 9; Issue: 4 Linguagem: Inglês

10.1109/77.819332

1558-2515

Л.М. Барков, N.S. Bashtovoy, A.V. Bragin, S.V. Karpov, V.S. Okhapkin, S.G. Pivovarov, A.A. Ruban, V.P. Smakhtin, I.G. Snopkov,

Particle Detector Development and Performance

This paper describes the superconducting magnet system of the CMD-2 detector. The magnetic field is provided by the main and two compensating superconducting solenoids. The unique features of this system are the solenoids protection method utilizing a distributed resistance along the coil and the power supply being a fluxpump type. The main solenoid produces a field up to 1.2 T in a volume of /spl phi/ 0.71 m/spl times/0.9 m. Its radiation thickness and E/M ratio are 0.38 X/sub 0/ and 5 kJ/kg, respectively. NbTi/Cu superconducting cables without any insulation and an aluminum stabilizer were used for the design of solenoid coils. The superconducting cable was wound in a stainless-steel bobbin and soldered by a PbSn alloy. The cooling bath provides a temperature of 4.2 K in the system. The superconducting magnet system of the CMD-2 detector was manufactured and tested in 1989.