Author/Authors :
Alikhani، نويسنده , , B. and Givechev، نويسنده , , A. and Heinz، نويسنده , , A. and John، نويسنده , , P.R. and Leske، نويسنده , , J. and Lettmann، نويسنده , , M. and Mِller، نويسنده , , O. and Pietralla، نويسنده , , N. and Rِder، نويسنده , , C.، نويسنده ,
Abstract :
The calibration of a highly-segmented AGATA-type HPGe-detector as a γ - ray Compton polarimeter and a method for (quasi-)continuous angle Compton polarimetry are presented. The high granularity, combined with the large detection efficiency of the AGATA-type HPGe-crystals, offers a significant advantage for polarization measurements of γ - radiation . A polarization-directional correlation experiment with γ - rays from a 60Co source with an activity of about 680 kBq was used to determine the polarization sensitivity of a single AGATA-type HPGe-crystal at 1173 and 1332 keV and to demonstrate the method. The polarization measurement was based on segment information. In our set-up a polarization sensitivity of 19% at 1332 keV has been achieved.
Keywords :
Segmented HPGe-detectors , Compton polarimeter , Compton-tracking polarimetry , Polarization sensitivity
