Bucking coil implementation on PMT for active canceling of magnetic field

T. Gogami, A. Asaturyan, J. Bono, P. Baturin, C. Chen, A. Chiba, N. Chiga, Y. Fujii, D. Kawama, T. Maruta, V. Maxwell, A. Mkrtchyan, S. Nagao, S. N. Nakamura, J. Reinhold, A. Shichijo, L. Tang, N. Taniya, S. A. Wood, Z. Ye

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


Aerogel and water Čherenkov detectors were employed to tag kaons for a Λ hypernuclear spectroscopic experiment which used the (e,e′K+) reaction in experimental Hall C at Jefferson Lab (JLab E05-115). Fringe fields from the kaon spectrometer magnet yielded ~5 gauss at the photomultiplier tubes for these detectors. These fields, which could not be easily passively shielded, would result in a lowered kaon detection efficiency if not mitigated. A bucking coil was placed on each photomultiplier tube to actively cancel this magnetic field, thus recovering kaon detection efficiency.

Original languageEnglish
Pages (from-to)816-824
Number of pages9
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Publication statusPublished - 2013


  • Active magnetic field canceling
  • Bucking coil
  • Photomultiplier tube
  • Čherenkov detector

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation


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