Polarization sensitivity and efficiency for a planar-type segmented germanium detector as a Compton polarimeter
- Authors
- Lee, JH; Lee, CS
- Issue Date
- Jun-2003
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- planar-type germanium detector; 25 segments; Compton polarimeter; polarization sensitivity; coincidence efficiency; Monte Carlo simulation
- Citation
- NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, v.506, no.1-2, pp 125 - 133
- Pages
- 9
- Journal Title
- NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
- Volume
- 506
- Number
- 1-2
- Start Page
- 125
- End Page
- 133
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/24977
- DOI
- 10.1016/S0168-9002(03)01369-X
- ISSN
- 0168-9002
1872-9576
- Abstract
- We have investigated performance of a planar-type germanium detector with 25 segments as a Compton polarimeter to measure the linear polarization of gamma rays. We considered three different configurations in sampling horizontal and vertical Compton-scattering events for linearly polarized gamma rays incident on the detector. The experimental polarization sensitivity. Q, coincidence efficiency epsilon(coin), and figure of merit F for each configuration have been extracted for gamma rays of interest below 600 keV found in our previous in-beam spectroscopy on Gd-155. We also obtained theoretical values for these three quantities through a Monte Carlo simulation. Experimental values were in good accord with simulation results for all the three configurations. The third configuration, sampling pairs between the segment of incidence and any off-diagonal segments in coincidence, turned out to have the largest Q as well as epsilon(coin) value of all the three configurations, thereby resulting in the best figure of merit F. (C) 2003 Elsevier Science B.V. All rights reserved.
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