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HK: Fachverband Hadronen und Kerne
HK 63: Accelerators and Instrumentation II
HK 63.8: Talk
Wednesday, March 18, 2009, 18:45–19:00, H-ZO 90
Analysis of the polarization sensitivity of the DAGATA polarimeter — •Babak Alikhani1, Philpp Rudolf John1,2, Jörg Leske1, Oliver Möller1, and Norbert Pietralla1 — 1Technische Universität Darmstadt TUD,Germany — 2Middle East Technical University METU, Ankara, Turkey
Besides the energy and the spin of an excited nuclear state the determination of its parity is of crucial importance for instance for the interpretation of results from Nuclear Resonance Fluorescence experiments (NRF). For this purpose the sensitivity of the Compton Effect is used to measure the linear polarization of emitted photons. In comparison to standard Compton Polarimeters the DAGATA (Darmstadt GAmma-ray Tracking Assembly) polarimeter will significantly enhance the sensitivity for gamma rays above 4 MeV making use of its large volume 36-fold segmented HPGe AGATA crystal and the resulting superior position resolution. Results from Monte Carlo Simulations will be presented as well as approaches for data analysis to further improve the sensitivity. Application limits and realistic simulated spectra will be compared to results from existing polarimeters.