Superconducting magnet system of the CMD-2 detector

Author

Barkov, L.M. ; Bashtovoy, N.S. ; Bragin, A.V. ; Karpov, S.V. ; Okhapkin, V.S. ; Pivovarov, S.G. ; Ruban, A.A. ; Smakhtin, V.P. ; Snopkov, I.G.

Author_Institution

Budker Inst. of Nucl. Phys., Novosibirsk, Russia

Volume

9

Issue

4

fYear

1999

Firstpage

4644

Lastpage

4647

Abstract

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.

Keywords

particle calorimetry; solenoids; superconducting magnets; 1.2 T; 4.2 K; CMD-2 detector; E/M ratio; NbTi-Cu; NbTi/Cu superconducting cable; aluminum stabilizer; distributed resistance; fluxpump power supply; magnetic field; radiation thickness; solenoid protection; superconducting magnet; Detectors; Magnetic fields; Niobium compounds; Power supplies; Power system protection; Solenoids; Superconducting cables; Superconducting coils; Superconducting magnets; Titanium compounds;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.819332

Filename

819332