7.5.3 Hodoscope Cut
The CsI array, as well as the NaI-wall, was equipped with plastic scintillators
at the front. This allows to cut out charged tracks. A charged particle here
might have been generated by either scattered beam particles or converted
photons. A cut requiring the energy deposition not to be above 0.51 MeV takes
care of both sources. A multiplicative correction of 0.999 [Spu77] for
suppressed electrons and positrons that originated either directly from RC and
SCX or pair conversion of photons was applied for the final calculation of the
Panofsky rate.