Ground plane insulation failure in the first TPC superconducting coil

Author

Green, M.A. ; Pierre, P.D. ; Derby, K. ; DeOlivares, J.M. ; Eberhard, P.H. ; Fultz, B.T. ; Giauque, R.D. ; Gibson, G.H. ; Goulding, F.S. ; Kim, J.I. ; Martin, P.S. ; Morris, J.W. ; Pripstein, M. ; Ross, R.R. ; Shapiro, M.D. ; Smits, R.G. ; Taylor, J.D.

Author_Institution

University of California, Berkeley, CA, USA

Volume

17

Issue

5

fYear

1981

fDate

9/1/1981 12:00:00 AM

Firstpage

1855

Lastpage

1859

Abstract

On August 27, 1980, an insulation failure occurred during the testing of the TPC (Time Projection Chamber) thin superconducting solenoid. The accident caused shorts between the Ultra pure aluminum (UPA) secondary circuit and the superconducting coil. There were also shorts between the UPA circuit and ground. The results of an analysis of experimental data taken at 5 millisecond intervals by a data logger and a PDP-11 computer are presented. This paper discusses the results of x-ray and ultrasonic tests and the results of the coil autopsy. From the evidence, a most probable cause for the failure is given [1].

Keywords

Magnet wire insulation; Proportional counters; Superconducting magnets; Aluminum; Boring; Current density; Insulation; Iron; Magnetic circuits; Magnetic separation; Solenoids; Superconducting coils; Superconducting magnets;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.1981.1061311

Filename

1061311