A systematic study of the PWO heavy crystal calorimeter cells: The scintillation decay curves

The measurements of scintillation time characteristics have been performed in a large lead tungstate (PWO) crystal sample produced since 1993 at the Bogoroditsk plant, Russia, with different technologies of mass production, for the SAD-150 multiphoton high-resolution PWO spectrometer. The measurement results are presented showing that with the recently improved technology, the high scintillation time parameters are achieved, meeting the stringent requirements of the coming collider and fixed-target experiments.