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Superconducting magnet system of the CMD-2 detector

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9 Author(s)
Barkov, L.M. ; Budker Inst. of Nucl. Phys., Novosibirsk, Russia ; Bashtovoy, N.S. ; Bragin, A.V. ; Karpov, S.V.
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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.

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Applied Superconductivity, IEEE Transactions on  (Volume:9 ,  Issue: 4 )