Title :
Performance of a thick silicon polarimeter
Author :
Nelson, S.O. ; Phlips, B.F. ; Wulf, E.A. ; Kurfess, J.D. ; Novikov, E.I.
Author_Institution :
Naval Res. Lab., Washington, DC, USA
Abstract :
We have constructed and tested gamma-ray polarimeters from layers of 2 mm thick double-sided silicon strip detectors. The first test polarimeter consists of 2 layers of 64times64 strip detectors with a 0.891 mm strip pitch. The device was tested using 122 keV gamma-rays polarized by Compton scattering near 90deg in a 30times5 strip silicon detector. Data from a higher-energy experiment using gamma-rays from a 60Co source scattered by a 3.5 cm times 5 cm times 1 cm lead block and a single 64times64 strip Si detector was taken to test higher-energy polarimetry and allow direct background measurement. A detailed GEANT4 simulation for the low-energy polarimeter experiment has also been performed.
Keywords :
gamma-ray apparatus; gamma-ray detection; polarimeters; position sensitive particle detectors; silicon radiation detectors; 0.891 mm; 1 cm; 2 mm; 3.5 cm; 5 cm; Compton scattering; GEANT4 simulation; double-sided silicon strip detectors; gamma-ray polarimeters; silicon polarimeter; Decision support systems; Energy resolution; Gas detectors; Laboratories; Polarization; Scattering; Silicon; Strips; Telephony; Testing;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2004 IEEE
Conference_Location :
Rome
Print_ISBN :
0-7803-8700-7
Electronic_ISBN :
1082-3654
DOI :
10.1109/NSSMIC.2004.1462629
