Design optimization of a pixel-based range telescope for proton computed tomography
Purpose - A pixel-based range telescope for tracking particles during proton imaging is described. The detector applies a 3D matrix of stacked Monolithic Active Pixel Sensors with fast readout speeds. This study evaluates different design alternatives of the range telescope on basis of the protons’...
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| Main Authors: | , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
06 June 2019
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| In: |
Physica medica
Year: 2019, Volume: 63, Pages: 87-97 |
| ISSN: | 1724-191X |
| DOI: | 10.1016/j.ejmp.2019.05.026 |
| Online Access: | Verlag, Volltext: https://doi.org/10.1016/j.ejmp.2019.05.026 Verlag: http://www.sciencedirect.com/science/article/pii/S1120179719301358 
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| Author Notes: | Helge Egil Seime Pettersen, Johan Alme, Gergely Gábor Barnaföldi, Rene Barthel, Anthony van den Brink, Mamdouh Chaar, Viljar Eikeland, Alba García-Santos, Georgi Genov, Silje Grimstad, Ola Grøttvik, Håvard Helstrup, Kristin Fanebust Hetland, Shruti Mehendale, Ilker Meric, Odd Harald Odland, Gábor Papp, Thomas Peitzmann, Pierluigi Piersimoni, Attiq Ur Rehman, Matthias Richter, Andreas Tefre Samnøy, Joao Seco, Hesam Shafiee, Eivind Vågslid Skjæveland, Jarle Rambo Sølie, Ganesh Tambave, Kjetil Ullaland, Monika Varga-Kofarago, Lennart Volz, Boris Wagner, Shiming Yang, Dieter Röhrich |
| Summary: | Purpose - A pixel-based range telescope for tracking particles during proton imaging is described. The detector applies a 3D matrix of stacked Monolithic Active Pixel Sensors with fast readout speeds. This study evaluates different design alternatives of the range telescope on basis of the protons’ range accuracy and the track reconstruction efficiency. - Method - Detector designs with different thicknesses of the energy-absorbing plates between each sensor layer are simulated using the GATE/Geant4 Monte Carlo software. Proton tracks traversing the detector layers are individually reconstructed, and a Bragg curve fitting procedure is applied for the calculation of each proton’s range. - Results - Simulations show that the setups with 4mm and thinner absorber layers of aluminum have a low range uncertainty compared to the physical range straggling, systematic errors below 0.3mm water equivalent thickness and a track reconstruction capability exceeding ten million protons per second. - Conclusions - In order to restrict the total number of layers and to yield the required tracking and range resolution properties, a design recommendation is reached where the proposed range telescope applies 3.5mm thick aluminum absorber slabs between each sensor layer. |
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| Item Description: | Available online 06 June 2019 Gesehen am 23.10.2019 |
| Physical Description: | Online Resource |
| ISSN: | 1724-191X |
| DOI: | 10.1016/j.ejmp.2019.05.026 |