The MOCCA code is one of the most advanced codes which has the capacity to simulate a realistic sized star cluster with a full dynamical history including star evolution using Monte Carlo methods for the cluster evolution and the Fewbody code for scattering.The dynamical evolution of a cluster can result in the formation of many binary system.Some of these binaries may be very close.Close white dwarf binaries may be promising gravitational wave sources.Our work uses MOCCA to simulate 90 globular clusters of different number of stars,binary fraction,metallicity and initial mass function slope.After ruling out models which evaporate before 9 Gyrs and uninteresting models with a very low number of white dwarf binaries,we do multiple runs of the remaining models for around a Hubble time in order to get statistics on the overall white dwarf binary population of different component types,orbit periods and cluster radii in the time range from 8 Gyrs to 10 Gyrs.We consider that white dwarf binaries which exist within a specified time range & lagrangian radius range and have orbit at periods less than a day are observable.Thus we set up a map of possible white dwarf binary detection rates for different types of globular clusters.