A High Resolution, High Counting Rate Bidimensional, MWPC Imaging Detector for Small Angle X-ray Diffraction Studies

摘要

The performance is reported of a 200 mm x 200 mm X-ray imaging MWPC (Multiwire Proportional Chamber gamma Camera) aimed at applications in small angle X-ray diffraction and scattering. With quantum energies of about 8 keV, the authors report high spatial resolution (+ or - 0.5 mm x + or - 0.14 mm) with a capability for data taking at about, or > 350 kHz. The detection efficiency is about 75% and the detector operates as a sealed unit with a long lifetime.