Scintillators in magnetic fields up to 20 T

Abstract

Plastic scintillators and wavelength shifting fibers have been placed in magnetic fields of up to 20 T and the change in light yield measured. The light yield in scintillators increases at very low magnetic fields and continues to increase with increasing field until saturation at about 2 T. The maximum increase is between 6% and 8%, depending on the plastic composition. This increase is due to the polymer and not due to the dyes (fluors) used in the scintillators. No change of light yield due to magnetic fields has been observed in wavelength shifting fibers.