Gabriele Cosmo
96 lines
3.9 KiB
Plaintext
96 lines
3.9 KiB
Plaintext
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| medical_linac |
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| README |
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This application has been developed by the Geant4 users:
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*Silvia Pozzi and *Barbara Caccia with the support of ^Carlo Mancini Terracciano
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Past contributros:
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$Claudio Andenna, Pablo Cirrone, Alessandro Occhigrossi*. S. Guatelli+
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Michela Piergentili with the support of M.G.Pia and Franca Foppiano.
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*Istituto Superiore di Sanita' and INFN Roma, Italy
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^Physics Dep. - Univ. La Sapienza and INFN Roma, Italy
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%LNS-INFN Catania, Italy
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+University of Wollongong, Autralia
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$INAIL DIPIA - ex ISPESL and INFN Roma, gruppo collegato Sanita', Italy
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---> A brief description
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The example is a deep update of the previous version for medlinac. The example
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is based on a medical accelerator used in a intercomparison exercise managed
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by working Group6 (Computational Dosimetry) of Eurados network (B.Caccia et
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al. "A model validation scheme for Monte Carlo simulations of a medical linear accelerator: geometrical description and dosimetric data used in the “Linac
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Action”- free download from https://eurados.sckcen.be/sites/eurados/files/uploads/Report-Publications/Reports/2020/EURADOS%20Report%202020-05.pdf).
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The medical accelerator is a GE Saturn 43 LINAC. The given description of the
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Saturn 43 LINAC corresponds to an operational mode with an acceleration voltage
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of 12 MV in the photon mode with collimator settings for a 10x10 cm^2 field size
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at standard working distance. Experimental dosimetric data are disposable and
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are related to a cubic water phantom of a 40x40x40 cm3 polymethyl methacrylate
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(PMMA) water tank filled with distilled water. At the front of the phantom, the
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thickness of PMMA crossed by the beam is 4 mm (15 mm for the all other walls of
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the phantom). The distance from the source point of the target to the external
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entrance window of the water phantom is 90 cm.
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The example package contains:
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- source files (src, include, macros)
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- CMakeLists.txt
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- README.txt
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- main.cc
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---------------------------------------------------------------
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----> 1. Experimental set-up.
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The elements simulated are:
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1 - A source of electrons. The beam direction is along the z axis.
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2 - A target
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3 - A primary collimator
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4 - A vacuum window
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5 - A flattening filter
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6 - A ion chamber
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7 - Secondary movable collimators (jaws)
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8 - A cubic phantom filled with water
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--------------------------------------------------------------
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----> 2. How to run the example.
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The example runs with the run.mac macro file.
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-----------------------------------------------------------------------
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----> 4. The physics
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The PhysicsList class allows the activation of all the physic models
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via the macro file.
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The standard electromagnetic option3 model is the default model.
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------------------------------------------------------------------------
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----> 5. Simulation output
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The output of the medlinac example is generated by the Geant4 command-based
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scorer doseDeposit.
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------------------------------------------------------------------------
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----> 6. Main differences with the previous ML2 release.
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Multithreading has been implemented and a real accelerator was used,
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with experimental data for dose profiles and deep percentage dose
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with which to check the results obtained in the simulation.
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------------------------------------------------------------------------
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----> 7. Contacts
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If you have any questions or wish to notify of updates and/or modification
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please contact:
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Silvia Pozzi at silvia.pozzi@iss.it
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Barbara Caccia at barbara.caccia@iss.it
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Istituto Superiore di Sanita' and INFN Roma, Italy
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Viale Regina Elena 299, 00161 Roma (Italy)
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