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Geant4 Applications for Modeling Molecular Transport in Complex Vacuum Geometries

We discuss a novel use of the Geant4 simulation toolkit to model molecular transport in a vacuum environment, in the molecular flow regime. The Geant4 toolkit was originally developed by the high energy physics community to simulate the…

Computational Physics · Physics 2013-10-07 J. Singal , J. Langton , R. Schindler

MinGLE: A Minimalist, Configurable, and Pedagogical Geant4 Application Template

The Geant4 toolkit is the leading software for the simulation of particle transport through matter, widely used in nuclear physics, high-energy physics, and medical physics. However, the initial learning curve for new developers can be…

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Proton radiography to improve proton radiotherapy: Simulation study at different proton beam energies

To improve the quality of cancer treatment with protons, a translation of X-ray Computed Tomography (CT) images into a map of the proton stopping powers needs to be more accurate. Proton stopping powers determined from CT images have…

Medical Physics · Physics 2019-05-22 A. K. Biegun , Jun Takatsu , M-J. van Goethem , E. R. van der Graaf , M. van Beuzekom , J. Visser , S. Brandenburg

Processing optimization with parallel computing for the J-PET tomography scanner

The Jagiellonian-PET (J-PET) collaboration is developing a prototype TOF-PET detector based on long polymer scintillators. This novel approach exploits the excellent time properties of the plastic scintillators, which permit very precise…

Instrumentation and Detectors · Physics 2016-03-22 W. Krzemień , M. Bała , T. Bednarski , P. Białas , E. Czerwiński , A. Gajos , M. Gorgol , B. Jasińska , D. Kamińska , Ł. Kapłon , G. Korcyl , P. Kowalski , T. Kozik , E. Kubicz , Sz. Niedźwiecki , M. Pałka , L. Raczyński , Z. Rudy , O. Rundel , N. G. Sharma , M. Silarski , A. Słomski , K. Stola , A. Strzelecki , D. Trybek , Anna Wieczorek , W. Wiślicki , M. Zieliński , B. K. Zgardzińska , P. Moskal

Ants3 toolkit: front-end for Geant4 with interactive GUI and Python scripting

Ants3 is a toolkit that serves as a front-end for particle simulations in Geant4 and offers a custom simulator for optical photons. It features a fully interactive Graphical User Interface and an extensive scripting system based on…

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Comprehensive procedure for personalized dosimetry in computed tomography

The purpose of this work is to develop viable procedures for verifying the applicability of personalized dosimetry in computed tomography (CT) using Monte Carlo-based simulations. Mobile equipment together with customized software was…

Medical Physics · Physics 2018-12-05 Stephan Rosendahl , Ludwig Büermann , Markus Borowski , Mika Kortesniemi , Antti Kosunen , Teemu Siiskonen , Veli-Matti Sundell

Simulation of Physical Parameters for a Photoneutron Source

A compact photoneutron source (PNS), based on an electron linac was designed and constructed to provide required nuclear data for the design of Thorium Molten Salt Reactor (TMSR). Many local shielding are built to reduce the background of…

Computational Physics · Physics 2018-01-01 Xiaohe Wang , Longxiang Liu , Jifeng Hu , Jianlong Han , Pu Yang , Zuokang Lin , Guilin Zhang , Naxiu Wang , Xianzhou Cai , Hongwei Wang , Jingen Chen

Fast full-body reconstruction for a functional human RPC-PET imaging system using list-mode simulated data and its applicability to radiation oncology and radiology

Single-bed whole-body positron emission tomography based on resistive plate chamber detectors (RPC-PET) has been proposed for human studies, as a complementary resource to scintillator-based PET scanners. The purpose of this work is mainly…

Medical Physics · Physics 2017-06-23 Paulo Magalhaes Martins , Paulo Crespo , Miguel Couceiro , Nuno Chichorro Ferreira , Rui Ferreira Marques , Joao Seco , Paulo Fonte

GEANT4 Simulation of a Cosmic Ray Muon Tomography System with Micro-Pattern Gas Detectors for the Detection of High-Z Materials

Muon Tomography (MT) based on the measurement of multiple scattering of atmospheric cosmic ray muons traversing shipping containers is a promising candidate for identifying threatening high-Z materials. Since position-sensitive detectors…

Instrumentation and Detectors · Physics 2009-06-25 Marcus Hohlmann , Patrick Ford , Kondo Gnanvo , Jennifer Helsby , David Pena , Richard Hoch , Debasis Mitra

An efficient approach with theoretical guarantees to simultaneously reconstruct activity and attenuation sinogram for TOF-PET

In positron emission tomography (PET), it is indispensable to perform attenuation correction in order to obtain the quantitatively accurate activity map (tracer distribution) in the body. Generally, this is carried out based on the…

Medical Physics · Physics 2025-10-16 Liyang Hu , Chong Chen

Dosimetric Comparison of Passive Scattering and Active Scanning Proton Therapy Techniques Using GATE Simulation

In this study, two proton beam delivery designs, passive scattering proton therapy (PSPT) and pencil beam scanning (PBS), were quantitatively compared in terms of dosimetric indices. The GATE Monte Carlo code was used to simulate the proton…

Medical Physics · Physics 2022-09-21 A. Asadi , A. Akhavanallaf , S. A. Hosseini , H. Zaidi

LHAASO-KM2A detector simulation using Geant4

KM2A is one of the main sub-arrays of LHAASO, working on gamma ray astronomy and cosmic ray physics at energies above 10 TeV. Detector simulation is the important foundation for estimating detector performance and data analysis. It is a big…

Instrumentation and Methods for Astrophysics · Physics 2024-05-14 Zhen Cao , F. Aharonian , Q. An , Axikegu , Y. X. Bai , Y. W. Bao , D. Bastieri , X. J. Bi , Y. J. Bi , J. T. Cai , Q. Cao , W. Y. Cao , Zhe Cao , J. Chang , J. F. Chang , A. M. Chen , E. S. Chen , Liang Chen , Lin Chen , Long Chen , M. J. Chen , M. L. Chen , Q. H. Chen , S. H. Chen , S. Z. Chen , T. L. Chen , Y. Chen , N. Cheng , Y. D. Cheng , M. Y. Cui , S. W. Cui , X. H. Cui , Y. D. Cui , B. Z. Dai , H. L. Dai , Z. G. Dai , Danzengluobu , X. Q. Dong , K. K. Duan , J. H. Fan , Y. Z. Fan , J. Fang , K. Fang , C. F. Feng , L. Feng , S. H. Feng , X. T. Feng , Y. L. Feng , S. Gabici , B. Gao , C. D. Gao , L. Q. Gao , Q. Gao , W. Gao , W. K. Gao , M. M. Ge , L. S. Geng , G. Giacinti , G. H. Gong , Q. B. Gou , M. H. Gu , F. L. Guo , X. L. Guo , Y. Q. Guo , Y. Y. Guo , Y. A. Han , H. H. He , H. N. He , J. Y. He , X. B. He , Y. He , Y. K. Hor , B. W. Hou , C. Hou , X. Hou , H. B. Hu , Q. Hu , S. C. Hu , D. H. Huang , T. Q. Huang , W. J. Huang , X. T. Huang , X. Y. Huang , Y. Huang , Z. C. Huang , X. L. Ji , H. Y. Jia , K. Jia , K. Jiang , X. W. Jiang , Z. J. Jiang , M. Jin , M. M. Kang , T. Ke , D. Kuleshov , K. Kurinov , B. B. Li , Cheng Li , Cong Li , D. Li , F. Li , H. B. Li , H. C. Li , H. Y. Li , J. Li , Jian Li , Jie Li , K. Li , W. L. Li , W. L. Li , X. R. Li , Xin Li , Y. Z. Li , Zhe Li , Zhuo Li , E. W. Liang , Y. F. Liang , J. Lin , B. Liu , C. Liu , D. Liu , H. Liu , H. D. Liu , J. Liu , J. L. Liu , J. Y. Liu , M. Y. Liu , R. Y. Liu , S. M. Liu , W. Liu , Y. Liu , Y. N. Liu , R. Lu , Q. Luo , H. K. Lv , B. Q. Ma , L. L. Ma , X. H. Ma , J. R. Mao , Z. Min , W. Mitthumsiri , H. J. Mu , Y. C. Nan , A. Neronov , Z. W. Ou , B. Y. Pang , P. Pattarakijwanich , Z. Y. Pei , M. Y. Qi , Y. Q. Qi , B. Q. Qiao , J. J. Qin , D. Ruffolo , A. Sáiz , D. Semikoz , C. Y. Shao , L. Shao , O. Shchegolev , X. D. Sheng , F. W. Shu , H. C. Song , Yu. V. Stenkin , V. Stepanov , Y. Su , Q. N. Sun , X. N. Sun , Z. B. Sun , P. H. T. Tam , Q. W. Tang , Z. B. Tang , W. W. Tian , C. Wang , C. B. Wang , G. W. Wang , H. G. Wang , H. H. Wang , J. C. Wang , K. Wang , L. P. Wang , L. Y. Wang , P. H. Wang , R. Wang , W. Wang , X. G. Wang , X. Y. Wang , Y. Wang , Y. D. Wang , Y. J. Wang , Z. H. Wang , Z. X. Wang , Zhen Wang , Zheng Wang , D. M. Wei , J. J. Wei , Y. J. Wei , T. Wen , C. Y. Wu , H. R. Wu , S. Wu , X. F. Wu , Y. S. Wu , S. Q. Xi , J. Xia , J. J. Xia , G. M. Xiang , D. X. Xiao , G. Xiao , G. G. Xin , Y. L. Xin , Y. Xing , Z. Xiong , D. L. Xu , R. F. Xu , R. X. Xu , W. L. Xu , L. Xue , D. H. Yan , J. Z. Yan , T. Yan , C. W. Yang , F. Yang , F. F. Yang , H. W. Yang , J. Y. Yang , L. L. Yang , M. J. Yang , R. Z. Yang , S. B. Yang , Y. H. Yao , Z. G. Yao , Y. M. Ye , L. Q. Yin , N. Yin , X. H. You , Z. Y. You , Y. H. Yu , Q. Yuan , H. Yue , H. D. Zeng , T. X. Zeng , W. Zeng , M. Zha , B. B. Zhang , F. Zhang , H. M. Zhang , H. Y. Zhang , J. L. Zhang , L. X. Zhang , Li Zhang , P. F. Zhang , P. P. Zhang , R. Zhang , S. B. Zhang , S. R. Zhang , S. S. Zhang , X. Zhang , X. P. Zhang , Y. F. Zhang , Yi Zhang , Yong Zhang , B. Zhao , J. Zhao , L. Zhao , L. Z. Zhao , S. P. Zhao , F. Zheng , J. H. Zheng , B. Zhou , H. Zhou , J. N. Zhou , M. Zhou , P. Zhou , R. Zhou , X. X. Zhou , C. G. Zhu , F. R. Zhu , H. Zhu , K. J. Zhu , X. Zuo

Synthetic PET via Domain Translation of 3D MRI

Historically, patient datasets have been used to develop and validate various reconstruction algorithms for PET/MRI and PET/CT. To enable such algorithm development, without the need for acquiring hundreds of patient exams, in this paper we…

Medical Physics · Physics 2022-06-14 Abhejit Rajagopal , Yutaka Natsuaki , Kristen Wangerin , Mahdjoub Hamdi , Hongyu An , John J. Sunderland , Richard Laforest , Paul E. Kinahan , Peder E. Z. Larson , Thomas A. Hope

Results from a Prototype Proton-CT Head Scanner

We are exploring low-dose proton radiography and computed tomography (pCT) as techniques to improve the accuracy of proton treatment planning and to provide artifact-free images for verification and adaptive therapy at the time of…

Medical Physics · Physics 2017-10-30 R. P. Johnson , V. A. Bashkirov , G. Coutrakon , V. Giacometti , P. Karbasi , N. T. Karonis , C. E. Ordoñez , M. Pankuch , H. F. -W. Sadrozinski , K. E. Schubert , R. W. Schulte

Optimisation of the event-based TOF filtered back-projection for online imaging in total-body J-PET

We perform a parametric study of the newly developed time-of-flight (TOF) image reconstruction algorithm, proposed for the real-time imaging in total-body Jagiellonian PET (J-PET) scanners. The asymmetric 3D filtering kernel is applied at…

Medical Physics · Physics 2021-08-31 R. Y. Shopa , K. Klimaszewski , P. Kopka , P. Kowalski , W. Krzemień , L. Raczyński , W. Wiślicki , N. Chug , C. Curceanu , E. Czerwiński , M. Dadgar , K. Dulski , A. Gajos , B. C. Hiesmayr , K. Kacprzak , Ł. Kapłon , D. Kisielewska , G. Korcyl , N. Krawczyk , E. Kubicz , Sz. Niedźwiecki , J. Raj , S. Sharma , Shivani , E. L. Stȩpień , F. Tayefi , P. Moskal

Comparison of Geant4 with EGSnrc for Simulation of Gamma-Radiation Detectors Based on Semi-Insulating Materials

We considered GEANT4 version 4.9.4 with different Electromagnetic Physics Package for calculation of response functions of detectors based on semi-insulating materials. Computer simulations with GEANT4 packages were run in order to…

Instrumentation and Detectors · Physics 2011-12-13 A. I. Skrypnyk , A. A. Zakharchenko , M. A. Khazhmuradov

Novel ion imaging concept based on time-of-flight measurements with low gain avalanche detectors

Treatment planning in ion beam therapy requires accurate knowledge of the relative stopping power (RSP) distribution within the patient. Currently, RSP maps are obtained via conventional x-ray computed tomography (CT) by converting the…

Medical Physics · Physics 2023-06-21 Felix Ulrich-Pur , Thomas Bergauer , Albert Hirtl , Christian Irmler , Stefanie Kaser , Florian Pitters , Simon Rit

Application of the Compress Sensing Theory for Improvement of the TOF Resolution in a Novel J-PET Instrument

Nowadays, in Positron Emission Tomography (PET) systems, a Time of Flight information is used to improve the image reconstruction process. In Time of Flight PET (TOF-PET), fast detectors are able to measure the difference in the arrival…

Instrumentation and Detectors · Physics 2016-10-31 L. Raczynski , P. Moskal , P. Kowalski , W. Wislicki , T. Bednarski , P. Bialas , E. Czerwinski , A. Gajos , L. Kaplon , A. Kochanowski , G. Korcyl , J. Kowal , T. Kozik , W. Krzemien , E. Kubicz , Sz. Niedzwiecki , M. Palka , Z. Rudy , P. Salabura , N. G. Sharma , M. Silarski , A. Slomski , J. Smyrski , A. Strzelecki , A. Wieczorek , M. Zielinski , N. Zon

Peculiarities in the Simulation of Optical Physics with Geant4

Geant4 is a complex and widely-used software toolkit for the simulation of the passage of particles through matter and the interactions they undergo. It contains very extensive and flexible optical physics capabilities. These allow for the…

Instrumentation and Detectors · Physics 2016-12-16 Erik Dietz-Laursonn

Fully Geant4 compatible package for the simulation of Dark Matter in fixed target experiments

We present the package for the simulation of DM (Dark Matter) particles in fixed target experiments. The most convenient way of this simulation (and the only possible way in the case of beam-dump) is to simulate it in the framework of the…

High Energy Physics - Phenomenology · Physics 2021-08-18 M. Bondi , A. Celentano , R. R. Dusaev , D. V. Kirpichnikov , M. M. Kirsanov , N. V. Krasnikov , L. Marsicano , D. Shchukin