Bucking Coil Implementation on PMT for Active Cancelling of Magnetic Field

Abstract

Aerogel and water Cerenkov detectors were employed to tag kaons for a lambda 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 (PMT) for these detectors which could not be easily shielded. As this field results in a lowered kaon detection efficiency, we implemented a bucking coil on each photomultiplier tubes to actively cancel this magnetic field, thus maximizing kaon detection efficiency.

11 pages, 25 figures

References in corpus (1)

• Observation of the Helium 7 Lambda hypernucleus by the (e,e'K+) reaction

Cited by in corpus (7)

• High Resolution Spectroscopic Study of ${}_{\Lambda }^{10}$Be
• The experiments with the High Resolution Kaon Spectrometer at JLab Hall C and the new spectroscopy of ${}_{\Lambda }^{12}\text{B}$ hypernuclei
• Spectroscopy of the neutron-rich hypernucleus ${}_{\Lambda }^7$He from electron scattering
• Spectroscopy of $A=9$ hyperlithium by the $(e,e^{\prime }{K}^{+})$ reaction
• Experimental techniques and performance of $\Lambda$-hypernuclear spectroscopy with the $(e,e^{\prime }{K}^{+})$ reaction
• The Aerogel Cherenkov Detector for the SHMS magnetic spectrometer in Hall C at Jefferson Lab
• Development of Water $\check{C}$erenkov Detector for On-line Proton Rejection in ${\Xi }^{-}$ Hypernuclear Spectroscopy via the $(K^{-},K^{+})$ Reaction