Compton polarimetry with a 36-fold segmented HPGe-detector of the AGATA-type
Artikel i vetenskaplig tidskrift, 2012

The calibration of a highly-segmented AGATA-type HPGe-detector as a gamma-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 gamma-radiation. A polarization-directional correlation experiment with gamma-rays from a Co-60 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 key 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.

polarization sensitivity

parity assignments



Compton-tracking polarimetry

Compton polarimeter

Segmented HPGe-detectors



B. Alikhani

Technische Universität Darmstadt

A. Givechev

Technische Universität Darmstadt

Andreas Martin Heinz

Chalmers, Teknisk fysik, Subatomär fysik

P. R. John

Technische Universität Darmstadt

J. Leske

Technische Universität Darmstadt

M. Lettmann

Technische Universität Darmstadt

O. Moller

Technische Universität Darmstadt

N. Pietralla

Technische Universität Darmstadt

C. Roder

Technische Universität Darmstadt

Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

0168-9002 (ISSN)

Vol. 675 144-154