IEAP - Institute of Experimental and Applied Physics CTU - Czech Technical University in Prague
Česky English
IEAP - Institute of Experimental and Applied Physics CTU - Czech Technical University in Prague
CTU - Czech Technical University in Prague
Publication  > Articles in Impacted Journals  > 'Spatial Resolution of the Medipix-2 as Neutron Pixel Detector'
Spatial Resolution of the Medipix-2 as Neutron Pixel Detector

Author

Year
2005

Scientific journal
NIM A Vol. 546, pages 164-169

Web


Abstract
Nowadays promising digital active pixel detector systems are available and make possible real time imaging with high sensitivity and broad dynamic range. The hybrid silicon pixel detector device Medipix-2 was originally designed for single X-ray photon detection. The device consists of a sensor chip with 256 x 256 square pixels of 55 um size. The detector can be adapted for neutron detection by deposition of a converter layer to its surface. Thermal neutrons are converted in the layer into the secondary radiation which can be subsequently detected by the pixel detector. Different types of converter materials were examined with the aim to reach maximal spatial resolution at reasonable detection efficiency. The results demonstrate superior properties of the Medipix-2 based thermal neutron imager with a 6LiF converter in terms of spatial resolution, signal-to-noise ratio, linearity and dynamic range. Several images of real objects demonstrating the capabilities of the device are presented. The performance of the imager was compared with several types of contemporary neutron imaging systems (Medipix-1, CCD camera, imaging plates).

Cite article as:
D. Vavřík, "Spatial Resolution of the Medipix-2 as Neutron Pixel Detector", NIM A Vol. 546, pages 164-169 (2005)

Search
10th Anniversary of IEAP