  Calibration of three scintillators (EJ232Q, BC422Q and EJ410) in a
time-of-flight (TOF) arrangement using a laser drive-neutron source is
presented. The three plastic scintillator detectors were calibrated with gamma
insensitive bubble detector spectrometers, which were absolutely calibrated
over a wide range of neutron energies ranging from sub MeV to 20 MeV. A typical
set of data obtained simultaneously by the detectors are shown, measuring the
neutron spectrum emitted from a petawatt laser irradiated thin foil.
