TY - JOUR
T1 - Design optimization of a pixel-based range telescope for proton computed tomography
AU - Pettersen, Helge Egil Seime
AU - Alme, Johan
AU - Barnaföldi, Gergely Gábor
AU - Barthel, Rene
AU - van den Brink, Anthony
AU - Chaar, Mamdouh
AU - Eikeland, Viljar
AU - García-Santos, Alba
AU - Genov, Georgi
AU - Grimstad, Silje
AU - Grøttvik, Ola
AU - Helstrup, Håvard
AU - Hetland, Kristin Fanebust
AU - Mehendale, Shruti
AU - Meric, Ilker
AU - Odland, Odd Harald
AU - Papp, Gábor
AU - Peitzmann, Thomas
AU - Piersimoni, Pierluigi
AU - Ur Rehman, Attiq
AU - Richter, Matthias
AU - Samnøy, Andreas Tefre
AU - Seco, Joao
AU - Shafiee, Hesam
AU - Skjæveland, Eivind Vågslid
AU - Sølie, Jarle Rambo
AU - Tambave, Ganesh
AU - Ullaland, Kjetil
AU - Varga-Kofarago, Monika
AU - Volz, Lennart
AU - Wagner, Boris
AU - Yang, Shiming
AU - Röhrich, Dieter
PY - 2019/7/1
Y1 - 2019/7/1
N2 - 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 4 mm and thinner absorber layers of aluminum have a low range uncertainty compared to the physical range straggling, systematic errors below 0.3 mm 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 3.5 mm thick aluminum absorber slabs between each sensor layer.
AB - 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 4 mm and thinner absorber layers of aluminum have a low range uncertainty compared to the physical range straggling, systematic errors below 0.3 mm 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 3.5 mm thick aluminum absorber slabs between each sensor layer.
KW - Detector optimization
KW - Monte Carlo simulation
KW - Proton computed tomography
KW - Track reconstruction
UR - http://www.scopus.com/inward/record.url?scp=85066756915&partnerID=8YFLogxK
U2 - 10.1016/j.ejmp.2019.05.026
DO - 10.1016/j.ejmp.2019.05.026
M3 - Article
C2 - 31221414
AN - SCOPUS:85066756915
SN - 1120-1797
VL - 63
SP - 87
EP - 97
JO - Physica Medica
JF - Physica Medica
ER -