Prospects and fundamental limitations of room temperature, non-avalanche, semiconductor photon-counting sensors (Conference Presentation)

2017 ◽  
Author(s):  
Jiaju Ma ◽  
Yang Zhang ◽  
Xiaoxin Wang ◽  
Lei Ying ◽  
Saleh Masoodian ◽  
...  
Keyword(s):  
Room Temperature ◽  
Photon Counting ◽  
Fundamental Limitations

Room-temperature X-ray response of cadmium–zinc–telluride pixel detectors grown by the vertical Bridgman technique

2020 ◽  
Vol 27 (2) ◽  
pp. 319-328 ◽  
Author(s):  
Leonardo Abbene ◽  
Fabio Principato ◽  
Gaetano Gerardi ◽  
Antonino Buttacavoli ◽  
Donato Cascio ◽  
...  
Keyword(s):  
Room Temperature ◽  
Cadmium Zinc Telluride ◽  
Photon Counting ◽  
Zinc Telluride ◽  
High Rate ◽  
High Flux ◽  
X Ray ◽  
Pixel Detectors ◽  
Vertical Bridgman ◽  
Cadmium Zinc

In this work, the spectroscopic performances of new cadmium–zinc–telluride (CZT) pixel detectors recently developed at IMEM-CNR of Parma (Italy) are presented. Sub-millimetre arrays with pixel pitch less than 500 µm, based on boron oxide encapsulated vertical Bridgman grown CZT crystals, were fabricated. Excellent room-temperature performance characterizes the detectors even at high-bias-voltage operation (9000 V cm−1), with energy resolutions (FWHM) of 4% (0.9 keV), 1.7% (1 keV) and 1.3% (1.6 keV) at 22.1, 59.5 and 122.1 keV, respectively. Charge-sharing investigations were performed with both uncollimated and collimated synchrotron X-ray beams with particular attention to the mitigation of the charge losses at the inter-pixel gap region. High-rate measurements demonstrated the absence of high-flux radiation-induced polarization phenomena up to 2 × 106 photons mm−2 s−1. These activities are in the framework of an international collaboration on the development of energy-resolved photon-counting systems for high-flux energy-resolved X-ray imaging.

Room temperature 1040fps, 1 megapixel photon-counting image sensor with 1.1um pixel pitch

2017 ◽  
Author(s):  
S. Masoodian ◽  
J. Ma ◽  
D. Starkey ◽  
T. J. Wang ◽  
Y. Yamashita ◽  
...  
Keyword(s):  
Room Temperature ◽  
Photon Counting ◽  
Image Sensor ◽  
Pixel Pitch

scholarly journals Designing a synchrotron micro-focusing beamline for macromolecular crystallography

2016 ◽  
Vol 62 (3) ◽  
pp. 395-400
Author(s):  
Paweł Grochulski ◽  
Mirosław Cygler ◽  
Brian Yates
Keyword(s):  
Room Temperature ◽  
Photon Counting ◽  
Low Noise ◽  
Macromolecular Crystallography ◽  
X Ray Diffraction ◽  
X Ray ◽  
Photon Counting Detector ◽  
Diffraction Patterns ◽  
Ultra Low Noise

After a successful 10 years of operation, the Canadian Macromolecular Crystallography Facility 08ID-1 beamline will undergo an upgrade to establish micro-beam capability. This paper is mostly focussed on optics and computer simulations for ray tracing of the beamline. After completion, the focussed beam at the sample will have a much smaller size of 50 × 5 μm2 (H x V), allowing measurement of X-ray diffraction patterns from much smaller crystals than possible presently. The beamline will be equipped with a fast sample changer and an ultra-low noise photon counting detector, allowing shutter-less operation of the beamline. Additionally, it will be possible to perform in-situ room-temperature experiments.

14 MHz rate photon counting with room temperature InGaAs/InP avalanche photodiodes

2004 ◽  
Vol 51 (9-10) ◽  
pp. 1369-1379
Author(s):  
Paul L. Voss ◽  
Kahraman G. Köprülü ◽  
Sang-Kyung Choi ◽  
Sarah Dugan ◽  
Prem Kumar
Keyword(s):  
Room Temperature ◽  
Avalanche Photodiodes ◽  
Photon Counting
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