Test Results of the Thin Superconducting Solenoid for the CMD-3 Detector

Author

Bragin, Alexey V. ; Barkov, LevM ; Karpov, Sergey V. ; Okhapkin, Victor S. ; Popov, Yuri S. ; Ruban, Alexander A. ; Smakhtin, Vladimir P.

Author_Institution

Budker Inst. of Nucl. Phys., Novosibirsk

Volume

18

Issue

2

fYear

2008

fDate

6/1/2008 12:00:00 AM

Firstpage

399

Lastpage

402

Abstract

The superconducting solenoid is designed to provide 1.5 T magnetic field in the CMD-3 detector. Its dimensions are 0.7 m in diameter and 0.9 m in length. The superconducting coil is made of two layers of NbTi/Cu cable 0.87 mm in diameter. The solenoid is protected from quench by shunts, which are uniformly distributed along the coil. The total resistance of the shunts is about 40 . The superconducting coil has a minimal radiation thickness compared with other solenoids (0.085 ). The superconducting coil is indirectly cooled by liquid helium being in nucleate pool boiling state at 4.2 K. High purity aluminum strips were used to keep the solenoid at 4.2 K. The magnet system was tested for liquid helium efficiency. In May 2007, the solenoid, surrounded by a dummy iron yoke, was charged to its design current. The quench behavior of the solenoid is discussed.

Keywords

particle calorimetry; scintillation counters; superconducting coils; superconducting magnets; CMD-3 detector; NbTi/Cu cable; high purity aluminum strips; magnet system; magnetic flux density 1.5 T; nucleate pool boiling; superconducting coil; thin superconducting solenoid; Detector magnet; quench; superconducting magnets;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2008.921245

Filename

4520234