Detection efficiency of ATLAS-MPX detectors with respect to neutrons

Greiffenberg, D.; Fiederle, M.; Vykydal, Z.; Král, V.; Jakůbek, J.; Holý, T.; Pospı́šil, S.; Maneuski, D.; O’Shea, V.; Suk, M.; Králı́k, M.; Lebel, C.; Leroy, C.

doi:10.1016/j.nima.2009.03.103

Cited by 15 publications

(13 citation statements)

References 3 publications

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“…As a practical matter for measuring the energy deposited by charged particles, the minimum shutter time should be one to two orders of magnitude longer than the longest anticipated digitization time using the TOT method; for the most densely ionizing ions expected to be encountered in space, a minimum shutter time of about 10 ms suffices. The Timepix and related devices produced by the Medipix2 Collaboration are also capable of being configured to measure the properties of the incident neutron flux (Uher et al, 2005;Jakubek et al, 2006Jakubek et al, , 2009Greiffenberg et al, 2009;Vykydal et al, 2006a), but this paper will focus solely on the detection and measurement of incident charged particles. Each detector in use has been individually calibrated pixel-by-pixel to yield an accurate correlation between the TOT counts recorded and the energy deposited in the sensor volume that was responsible for that pixel's response (Fiederle et al, 2008).…”

Section: Timepix-based Radiation Imaging Detectors From the Medipix2 mentioning

confidence: 99%

A semiconductor radiation imaging pixel detector for space radiation dosimetry

Kroupa

Bahadori

Campbell-Ricketts

et al. 2015

Life Sciences in Space Research

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Section: Timepix-based Radiation Imaging Detectors From the Medipix2 mentioning

confidence: 99%

A semiconductor radiation imaging pixel detector for space radiation dosimetry

Kroupa

Bahadori

Campbell-Ricketts

et al. 2015

Life Sciences in Space Research

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“…Toward the goal of advancing both spatial and temporal resolution with the manufacturability maturity needed for a turnkey detector system-but at the cost of lower total detection efficiency-planar indirect-conversion detectors were recently revived [241,[310][311][312][313][314][315] based on advances from the medical x-ray detector community (e.g. Medipix detectors).…”

Section: Indirect-conversion Heterostructuresmentioning

confidence: 99%

The physics of solid-state neutron detector materials and geometries

Caruso

2010

J. Phys.: Condens. Matter

121

111

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Detection of neutrons, at high total efficiency, with greater resolution in kinetic energy, time and/or real-space position, is fundamental to the advance of subfields within nuclear medicine, high-energy physics, non-proliferation of special nuclear materials, astrophysics, structural biology and chemistry, magnetism and nuclear energy. Clever indirect-conversion geometries, interaction/transport calculations and modern processing methods for silicon and gallium arsenide allow for the realization of moderate- to high-efficiency neutron detectors as a result of low defect concentrations, tuned reaction product ranges, enhanced effective omnidirectional cross sections and reduced electron-hole pair recombination from more physically abrupt and electronically engineered interfaces. Conversely, semiconductors with high neutron cross sections and unique transduction mechanisms capable of achieving very high total efficiency are gaining greater recognition despite the relative immaturity of their growth, lithographic processing and electronic structure understanding. This review focuses on advances and challenges in charged-particle-based device geometries, materials and associated mechanisms for direct and indirect transduction of thermal to fast neutrons within the context of application. Calorimetry- and radioluminescence-based intermediate processes in the solid state are not included.

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“…Medipix detectors (now entering their fourth generation, Medipix1 Amendolia et al, 1999, Medipix2 Llopart et al, 2002, Medipix3 Ballabriga et al, 2011, Medipix4 collaboration founded 2016 can detect and differentiate between many types of ionizing radiation, and present many advantages compared to other methods -but at the cost of a small collecting area and comparatively high expense. Medipix detectors have been used in a wide range of applications, including high-energy physics experiments (Greiffenberg et al, 2009, Collins et al, 2011, medical physics (hence 'Medi', e.g. Blanchot et al, 2006, Butzer et al, 2008, Martišíková et al, 2011, Hartmann, 2013 and small animal imaging (Accorsi et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

First results from the LUCID-Timepix spacecraft payload onboard the TechDemoSat-1 satellite in Low Earth Orbit

Furnell

Shenoy

Fox

et al. 2019

Advances in Space Research

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The Langton Ultimate Cosmic ray Intensity Detector (LUCID) is a payload onboard the satellite TechDemoSat-1, used to study the radiation environment in Low Earth Orbit (∼635km). LUCID operated from 2014 to 2017, collecting over 2.1 million frames of radiation data from its five Timepix detectors on board. LUCID is one of the first uses of the Timepix detector technology in open space, with the data providing useful insight into the performance of this technology in new environments. It provides high-sensitivity imaging measurements of the mixed radiation field, with a wide dynamic range in terms of spectral response, particle type and direction. The data has been analysed using computing resources provided by GridPP, with a new machine learning algorithm that uses the Tensorflow framework. This algorithm provides a new approach to processing Medipix data, using a training set of human labelled tracks, providing greater particle classification accuracy than other algorithms. For managing the LUCID data, we have developed an online platform called Timepix Analysis Platform at School (TAPAS). This provides a swift and simple way for users to analyse data that they collect using Timepix detectors from both LUCID and other experiments. We also present some possible future uses of the LUCID data and Medipix detectors in space.

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Detection efficiency of ATLAS-MPX detectors with respect to neutrons

Cited by 15 publications

References 3 publications

A semiconductor radiation imaging pixel detector for space radiation dosimetry

A semiconductor radiation imaging pixel detector for space radiation dosimetry

The physics of solid-state neutron detector materials and geometries

First results from the LUCID-Timepix spacecraft payload onboard the TechDemoSat-1 satellite in Low Earth Orbit

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