Focusing coil | Article about focusing coil by The Free Dictionary
focusing coil[′fō·kəs·iŋ ‚kȯil]
A coil that produces a magnetic field parallel to an electron beam for the purpose of focusing the beam.
References in periodicals archive
The proton detector, a CsI scintillator, is situated on top of the storage volume; the decay protons are accelerated and focused onto it through a potential difference in the storage volume and an additional focusing coil
around the detector.