Exposure dose reduction for the high energy spectrum in the photon counting mammography: simulation study based on Japanese breast glandularity and thickness

2015 ◽  
Author(s):  
Naoko Niwa ◽  
Misaki Yamazaki ◽  
Yoshie Kodera ◽  
Mika Yamamuro ◽  
Kanako Yamada ◽  
...  
Keyword(s):  
Energy Spectrum ◽  
Dose Reduction ◽  
Simulation Study ◽  
Photon Counting ◽  
High Energy ◽  
Exposure Dose

Development of mammography system using CdTe photon counting detector for the exposure dose reduction

2014 ◽  
Author(s):  
Sho Maruyama ◽  
Naoko Niwa ◽  
Misaki Yamazaki ◽  
Tsutomu Yamakawa ◽  
Tatsuya Nagano ◽  
...  
Keyword(s):  
Dose Reduction ◽  
Photon Counting ◽  
Exposure Dose ◽  
Photon Counting Detector

scholarly journals UVscope and its application aboard the ASTRI-Horn telescope

2021 ◽  
Author(s):  
Maria Concetta Maccarone ◽  
Giovanni La Rosa ◽  
Osvaldo Catalano ◽  
Salvo Giarrusso ◽  
Alberto Segreto ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Single Photon ◽  
Photon Counting ◽  
Light Flux ◽  
Cosmic Ray ◽  
High Energy ◽  
Wide Field ◽  
High Energy Astrophysics ◽  
Single Photon Counting ◽  
Photon Counting Mode

AbstractUVscope is an instrument, based on a multi-pixel photon detector, developed to support experimental activities for high-energy astrophysics and cosmic ray research. The instrument, working in single photon counting mode, is designed to directly measure light flux in the wavelengths range 300-650 nm. The instrument can be used in a wide field of applications where the knowledge of the nocturnal environmental luminosity is required. Currently, one UVscope instrument is allocated onto the external structure of the ASTRI-Horn Cherenkov telescope devoted to the gamma-ray astronomy at very high energies. Being co-aligned with the ASTRI-Horn camera axis, UVscope can measure the diffuse emission of the night sky background simultaneously with the ASTRI-Horn camera, without any interference with the main telescope data taking procedures. UVscope is properly calibrated and it is used as an independent reference instrument for test and diagnostic of the novel ASTRI-Horn telescope.

Energy spectrum and mass composition of high-energy cosmic rays

2003 ◽  
Vol 66 (7) ◽  
pp. 1145-1206 ◽  
Author(s):  
Andreas Haungs ◽  
Heinigerd Rebel ◽  
Markus Roth
Keyword(s):  
Energy Spectrum ◽  
Cosmic Rays ◽  
High Energy ◽  
Mass Composition ◽  
High Energy Cosmic Rays

Detector commissioning and development for PETRA-III

2010 ◽  
Vol 1 (SRMS-7) ◽  
Author(s):  
David Pennicard ◽  
Heinz Graafsma ◽  
Michael Lohmann
Keyword(s):  
High Speed ◽  
Materials Science ◽  
Dynamic Range ◽  
Photon Counting ◽  
High Energy ◽  
X Rays ◽  
Silicon Detectors ◽  
Time Resolved ◽  
Wide Range ◽  
Synchrotron Light

The new synchrotron light source PETRA-III produced its first beam last year. The extremely high brilliance of PETRA-III and the large energy range of many of its beamlines make it useful for a wide range of experiments, particularly in materials science. The detectors at PETRA-III will need to meet several requirements, such as operation across a wide dynamic range, high-speed readout and good quantum efficiency even at high photon energies. PETRA-III beamlines with lower photon energies will typically be equipped with photon-counting silicon detectors for two-dimensional detection and silicon drift detectors for spectroscopy and higher-energy beamlines will use scintillators coupled to cameras or photomultiplier tubes. Longer-term developments include ‘high-Z’ semiconductors for detecting high-energy X-rays, photon-counting readout chips with smaller pixels and higher frame rates and pixellated avalanche photodiodes for time-resolved experiments.

Scattering Ray and Exposure Dose Reduction by Using Metal Sheet in X-ray Imaging System

2021 ◽  
Vol 58 (6) ◽  
pp. 89-96
Author(s):  
Ho-Il Lee ◽  
Seok-Hwan Bae ◽  
Yeun-Chul Ryu ◽  
Young-Joon Park ◽  
Yong-Gwon Kim
Keyword(s):  
Dose Reduction ◽  
Imaging System ◽  
Exposure Dose ◽  
Metal Sheet ◽  
X Ray ◽  
X Ray Imaging
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