This book deals with the details of the new generation Clover Detector which will be useful to extract information about gamma rays emitted from the excited Co-60 and Eu-152 source in the laboratory. The method of Compton suppression using the co-incidence technique in order to reduce the noise in the spectra and the add-back feature of the clover detector and its efficiency are lucidly discussed in the text. The polarisation method in order to get information about the electric/magnetic nature of the gamma rays emitted from the radioactive source is also discussed.