Precision linear and two-dimensional scintillation crystal arrays for x-ray and gamma-ray imaging applications

1999 ◽  
Author(s):  
David J. Krus ◽  
William P. Novak ◽  
Louis Perna
Keyword(s):  
Gamma Ray ◽  
Two Dimensional ◽  
Scintillation Crystal ◽  
X Ray ◽  
Gamma Ray Imaging

New Two-Dimensional Solid State Pixel Detectors With Dedicated Front-End Integrated Circuits for X-Ray and Gamma-Ray Imaging

2009 ◽  
Vol 56 (4) ◽  
pp. 2321-2329 ◽  
Author(s):  
Tumay O. Tumer ◽  
Victoria B. Cajipe ◽  
Martin Clajus ◽  
Satoshi Hayakawa ◽  
Alexander Volkovskii
Keyword(s):  
Solid State ◽  
Integrated Circuits ◽  
Gamma Ray ◽  
Two Dimensional ◽  
X Ray ◽  
Front End ◽  
Pixel Detectors ◽  
Gamma Ray Imaging

THE AGILE MISSION AND GAMMA-RAY ASTROPHYSICS

2002 ◽  
Vol 17 (12n13) ◽  
pp. 1799-1808 ◽  
Author(s):  
MARCO TAVANI
Keyword(s):  
Energy Range ◽  
Gamma Ray ◽  
Angular Resolution ◽  
Source Monitoring ◽  
Space Mission ◽  
Quick Response ◽  
Scientific Program ◽  
X Ray ◽  
Imaging Capability ◽  
Gamma Ray Imaging

Gamma-ray astrophysics in the energy range between 30 MeV and 30 GeV is in desperate need of arcminute angular resolution and source monitoring capability. The AGILE Mission planned to be operational in 2004-2006 will be the only space mission entirely dedicated to gamma-ray astrophysics above 30 MeV. The main characteristics of AGILE are the simultaneous X-ray and gamma-ray imaging capability (reaching arcminute resolution) and excellent gamma-ray timing (10-100 microseconds). AGILE scientific program will emphasize a quick response to gamma-ray transients and multiwavelength studies of gamma-ray sources.

Development of a Mercuric Iodide Detector Array For In-Vivo X-Ray Imaging

1994 ◽  
Vol 38 ◽  
pp. 615-624
Author(s):  
Bradley E. Patt ◽  
Jan S. Iwanczyk ◽  
Martin P. Tornai ◽  
Craig S. Levin ◽  
Edward J. Hoffman
Keyword(s):  
Gamma Camera ◽  
Gamma Ray ◽  
Active Area ◽  
Detector Array ◽  
Mercuric Iodide ◽  
X Ray ◽  
X Ray Imaging ◽  
Spatial Performance ◽  
Gamma Ray Imaging

Abstract A nineteen element mercuric iodide (HgI2) detector array has been developed in order to investigate the potential of using this technology for in-vivo x-ray and gamma-ray imaging. A prototype cross-grid detector array was constructed with hexagonal pixels of 1.9 mm diameter (active area = 3.28 mm2) and 0.2 mm thick septa. The overall detector active area is roughly 65 mm2. A detector thickness of 1.2 mm was used to achieve about 100% efficiency at 60 keV and 67% efficiency at 140 keV The detector fabrication, geometry and structure were optimized for charge collection and to minimize crosstalk between elements. A section of a standard high resolution cast-lead gamma-camera collimator was incorporated into the detector to provide collimation matching the discrete pixel geometry. Measurements of spectral and spatial performance of the array were made using 241-Am and 99m-Tc sources. These measurements were compared with similar measurements made using an optimized single HgI2 x-ray detector with active area of about 3 mm2 and thickness of 500 μm.

Fabrication of antiscatter grids and collimators for X-ray and gamma-ray imaging by lithography and electroforming

2008 ◽  
Vol 14 (9-11) ◽  
pp. 1613-1619 ◽  
Author(s):  
Olga V. Makarova ◽  
Guohua Yang ◽  
Platte T. Amstutz ◽  
Cha-Mei Tang
Keyword(s):  
Gamma Ray ◽  
X Ray ◽  
Gamma Ray Imaging

scholarly journals Detection of Low-Energy X-rays Using YSO Scintillation Crystal Arrays for GRB Experiments

Universe ◽  
2021 ◽  
Vol 7 (11) ◽  
pp. 396
Author(s):  
Minbin Kim ◽  
Jakub Ripa ◽  
Il H. Park ◽  
Vitaly Bogomolov ◽  
Søren Brandt ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Low Earth Orbit ◽  
Low Energy ◽  
X Rays ◽  
Engineering Model ◽  
Scintillation Crystal ◽  
X Ray ◽  
Detector Materials ◽  
Flight Model ◽  
Intrinsic Background

We developed an X-ray detector using 36 arrays, each consisting of a 64-pixellated yttrium oxyorthosilicate (YSO) scintillation crystal and a 64-channel multi-anode photomultiplier tube. The X-ray detector was designed to detect X-rays with energies lower than 10 keV, primarily with the aim of localizing gamma-ray bursts (GRBs). YSO crystals have no intrinsic background, which is advantageous for increasing low-energy sensitivity. The fabricated detector was integrated into UBAT, the payload of the Ultra-Fast Flash Observatory (UFFO)/Lomonosov for GRB observation. The UFFO was successfully operated in space in a low-Earth orbit. In this paper, we present the responses of the X-ray detector of the UBAT engineering model identical to the flight model, using 241Am and 55Fe radioactive sources and an Amptek X-ray tube. We found that the X-ray detector can measure energies lower than 5 keV. As such, we expect YSO crystals to be good candidates for the X-ray detector materials for future GRB missions.

scholarly journals Development of X-ray/gamma-ray imaging spectrometers using reach-through APD arrays

2012 ◽  
Vol 7 (03) ◽  
pp. C03038-C03038 ◽  
Author(s):  
T Nakamori ◽  
T Enomoto ◽  
T Toizumi ◽  
K Tokoyoda ◽  
Y Yatsu ◽  
...  
Keyword(s):  
Gamma Ray ◽  
X Ray ◽  
Gamma Ray Imaging
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