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HK: Physik der Hadronen und Kerne
HK 38: Instrumentation und Anwendungen VI
HK 38.4: Vortrag
Mittwoch, 21. März 2001, 17:30–17:45, E
A 90O-Compton polarimeter utilizing silicon drift detectors. — •Jan They, Gerd Buschhorn, Rainer Kotthaus, and Dmitry Pugachev — Max-Planck-Institut f"ur Physik (Werner-Heisenberg-Institut),F"ohringer Ring 6, 80805 M"unchen
A compact Compton polarimeter to be used for energy resolved linear polarization analysis of large angle Parametric X-radiation (PXR) in the energy range below 10 keV has been designed, built and calibrated with monochromatized synchrotron radiation [1]. The instrument employs 4 thermoelectrically cooled silicon drift detectors to determine the linear polarization vector by measuring the azimuthal modulation of X-rays scattered off a beryllium conus. The analyzing power is close to unity in agreement with expectations and Monte Carlo simulation results. Instrumental asymmetries of a few percent have been measured and corrected for with residual statistical uncertainties of O (10−3). The orientation of the polarization plane is determined to within less than 4 milliradians.
[1] J.They et al., SPIE vol 4138, 193 (2000)