  It is important to identify and reduce the gamma radiation which can be a
significant source of background for any double beta decay experiment. The
TIN.TIN detector array, which is under development for the search of
Neutrinoless Double Beta Decay in $^{124}$Sn, has the potential to utilize the
hit multiplicity information to discriminate the gamma background from the
events of interest. Monte Carlo simulations for optimizing the design of a Tin
detector module has been performed by varying element sizes with an emphasis on
the gamma background reduction capabilities of the detector array.

Instrumentation and Detectors;Nuclear Experiment