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Ionizing Radiation Sensor and Detector

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Physical Sensors".

Deadline for manuscript submissions: closed (30 July 2021) | Viewed by 8455

Special Issue Editor


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Guest Editor
University of Bristol, Bristol, United Kingdom
Interests: Ionising radiation sensor systems, radiation hardness, data analysis techniques, particle physics, radiotherapy, monolithic active pixel sensors, HV CMOS

Special Issue Information

Dear Colleagues,

Detection of ionizing radiation is an exciting field. Many advances have been made recently and sensor systems are continually being developed for more challenging environments, like particle physics experiments, nuclear decommissioning, radiotherapy dosimetry and treatment verification for both photon and proton therapy. Novel sensor concepts provide improved time, energy, spatial resolution and radiation hardness. Real-time processing is being integrated into many detector systems and machine learning is being incorporated in the data processing and, thus, more information is being extracted from the data. This Special Issue aims to highlight advances in the development and modelling of ionizing radiation sensors and detector systems.

This Special Issue will cover novel detector concepts, novel detector materials and advances in data processing and analysis techniques, among other relevant topics

Dr. Jaap Velthuis
Guest Editor

Manuscript Submission Information

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Keywords

  • Ionizing radiation detection technologies
  • Radiotherapy sensors
  • Particle physics detectors
  • Radiation hardness
  • Detector systems for nuclear decommissioning
  • Novel sensor materials
  • Detectors for space applications
  • Position sensitive detectors
  • Real-time data processing

Published Papers (3 papers)

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14 pages, 6173 KiB  
Article
3D Dosimetry Based on LiMgPO4 OSL Silicone Foils: Facilitating the Verification of Eye-Ball Cancer Proton Radiotherapy
by Michał Sądel, Jan Gajewski, Urszula Sowa, Jan Swakoń, Tomasz Kajdrowicz, Paweł Bilski, Mariusz Kłosowski, Anna Pędracka and Tomasz Horwacik
Sensors 2021, 21(18), 6015; https://doi.org/10.3390/s21186015 - 8 Sep 2021
Cited by 8 | Viewed by 1880
Abstract
A direct verification of the three-dimensional (3D) proton clinical treatment plan prepared for tumor in the eyeball, using the Eclipse Ocular Proton Planning system (by Varian Medical Systems), has been presented. To achieve this, a prototype of the innovative two-dimensional (2D) circular silicone [...] Read more.
A direct verification of the three-dimensional (3D) proton clinical treatment plan prepared for tumor in the eyeball, using the Eclipse Ocular Proton Planning system (by Varian Medical Systems), has been presented. To achieve this, a prototype of the innovative two-dimensional (2D) circular silicone foils, made of a polymer with the embedded optically stimulated luminescence (OSL) material in powder form (LiMgPO4), and a self-developed optical imaging system, consisting of an illuminating light source and a high-sensitive CCD camera has been applied. A specially designed lifelike eyeball phantom has been used, constructed from 40 flat sheet LMP-based silicone foils stacked and placed together behind a spherical phantom made by polystyrene, all to reflect the curvature of the real eyeball. Two-dimensional OSL signals were captured and further analyzed from each single silicone foil after irradiation using a dedicated patient collimator and a 58.8 MeV modulated proton beam. The reconstructed 3D proton depth dose distribution matches very well with the clinical treatment plan, allowing for the consideration of the new OSL system for further 3D dosimetry applications within the proton radiotherapy area. Full article
(This article belongs to the Special Issue Ionizing Radiation Sensor and Detector)
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24 pages, 6999 KiB  
Article
Fully Depleted Monolithic Active Microstrip Sensors: TCAD Simulation Study of an Innovative Design Concept
by Lorenzo De Cilladi, Thomas Corradino, Gian-Franco Dalla Betta, Coralie Neubüser and Lucio Pancheri
Sensors 2021, 21(6), 1990; https://doi.org/10.3390/s21061990 - 11 Mar 2021
Cited by 9 | Viewed by 3037
Abstract
The paper presents the simulation studies of 10 μμm pitch microstrips on a fully depleted monolithic active CMOS technology and describes their potential to provide a new and cost-effective solution for particle tracking and timing applications. The Fully Depleted Monolithic Active [...] Read more.
The paper presents the simulation studies of 10 μμm pitch microstrips on a fully depleted monolithic active CMOS technology and describes their potential to provide a new and cost-effective solution for particle tracking and timing applications. The Fully Depleted Monolithic Active Microstrip Sensors (FD-MAMS) described in this work, which are developed within the framework of the ARCADIA project, are compliant with commercial CMOS fabrication processes. A set of Technology Computer-Aided Design (TCAD) parametric simulations was performed in the perspective of an upcoming engineering production run with the aim of designing FD-MAMS, studying their electrical characteristics, and optimizing the sensor layout for enhanced performance in terms of low capacitance, fast charge collection, and low-power operation. A fine pitch of 10 μμm was chosen to provide high spatial resolution. This small pitch still allows readout electronics to be monolithically integrated in the inter-strip regions, enabling the segmentation of long strips and the implementation of distributed readout architectures. The effects of surface radiation damage expected for total ionizing doses of the order of 10 to 105 krad were also modeled in the simulations. The results of the simulations exhibit promising performance in terms of timing and low power consumption and motivate R&D efforts to further develop FD-MAMS; the results will be experimentally verified through measurements on the test structures that will be available from mid-2021. Full article
(This article belongs to the Special Issue Ionizing Radiation Sensor and Detector)
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13 pages, 1583 KiB  
Letter
Performance of Optical Coupling Materials in Scintillation Detectors Post Temperature Exposure
by Gregory Romanchek, Yuli Wang, Harsha Marupudi and Shiva Abbaszadeh
Sensors 2020, 20(21), 6092; https://doi.org/10.3390/s20216092 - 27 Oct 2020
Cited by 14 | Viewed by 2386
Abstract
In this paper, the room-temperature performance of different optical coupling materials post temperature exposure was tested. The tested couplers included OC431A-LVP, OG0010 optical grease, BLUESIL V-788, and SAINT-GOBAIN BC-630. This was done by subjecting the whole detector with newly applied optical coupling materials [...] Read more.
In this paper, the room-temperature performance of different optical coupling materials post temperature exposure was tested. The tested couplers included OC431A-LVP, OG0010 optical grease, BLUESIL V-788, and SAINT-GOBAIN BC-630. This was done by subjecting the whole detector with newly applied optical coupling materials to a 2-h temperature exposure—ranging from −20 to 50 °C and then by letting it return to room temperature before collecting a spectrum from a Cs-137 source. The energy resolution at 662 keV was computed as the metric for evaluating the performance. Three trials were run at each coupler–temperature combination. Our results reveal that the performance of all coupling agents do indeed change with temperature after the 2-h exposure. Over all the tested temperature trials, the energy resolution ranged from 11.4 to 14.3% for OC431A-LVP; 10.2 to 14.6% for OG0010; 10 to 13.4% for BLUESIL V-788; and 9.8 to 13.3% for SAINT-GOBAIN BC-630. OC431A-LVP had the lowest variance over the full range, while BC-630 was the most constant for temperatures above 20 °C. Ultraviolet-visible (UV-Vis) spectra experiments were also performed on isolated optical coupling materials to measure the light absorption coefficient. The results show that the temperature-induced variance in light absorption coefficient of each optical coupling materials is one of the reasons for the variance in energy resolution performance. Our findings suggest the need for further investigation into this effect and the recommendation that optical coupling materials need to be selected for the task at hand with greater scrutiny. Full article
(This article belongs to the Special Issue Ionizing Radiation Sensor and Detector)
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