Light-weight flexible magnetic shields for large-aperture photomultiplier tubes

P. Devore, D. Escontrias, T. Koblesky, C. J. Lin, D. W. Liu, K. B. Luk, J. Ngan, J. C. Peng, C. Polly, J. Roloff, H. Steiner, S. Wang, J. Wong, M. Yeh

Research output: Contribution to journalArticlepeer-review

Abstract

Thin flexible sheets of high-permeability FINEMET® foils encased in thin plastic layers have been used to shield various types of 20-cm-diameter photomultiplier tubes from ambient magnetic fields. In the presence of the Earth's magnetic field this type of shielding is shown to increase the collection efficiency of photoelectrons and can improve the uniformity of response of these photomultiplier tubes.

Original languageEnglish (US)
Pages (from-to)222-228
Number of pages7
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume737
DOIs
StatePublished - Feb 11 2014

Keywords

  • FINEMET
  • Magnetic shield
  • Photomultiplier tube

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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