%0 Journal Article
%A Marot, Mathieu
%A Jäger, Fabian
%A Greilich, Klaus-Steffen
%A Karger, Christian P
%A Jaekel, Oliver
%A Burigo, Lucas Norberto
%T Monte Carlo simulation for proton dosimetry in magnetic fields: Fano test and magnetic field correction factors kBfor Farmer-type ionization chambers.
%J Physics in medicine and biology
%V 68
%@ 0031-9155
%C Bristol
%I IOP Publ.
%M DKFZ-2023-01641
%P 175037
%D 2023
%Z #EA:E040#LA:E040# / Phys. Med. Biol. 68 (2023) 175037
%X In this contribution we present a special Fano test for charged particles in presence of magnetic fields in the MC code TOPAS, as well as the determination of magnetic field correction factors kBfor Farmer-type ionization chambers using proton beams.</td><td width="150">
%X #xD;</td><td width="150">
%X #xD;Approach: Customized C++ extensions for TOPAS were implemented to model the special Fano tests in presence of magnetic fields for electrons and protons. The Geant4-specific transport parameters,DRoverRandfinalRange, were investigated to optimize passing rate and computation time. The kBwas determined for the Farmer-type PTW 30013 ionization chamber, and 5 custom built ionization chambers with same geometry but varying inner radius, testing magnetic flux density ranging from 0 to 1.0 T and two proton beam energies of 157.43 and 221.05 MeV.</td><td width="150">
%X #xD;</td><td width="150">
%X #xD;Main results: Using the investigated parameters, TOPAS passed the Fano test within 0.39±0.15
%K MR-guided proton therapy (Other)
%K TOPAS (Other)
%K dosimetry (Other)
%K magnetic field (Other)
%K magnetic field correction factor (Other)
%F PUB:(DE-HGF)16
%9 Journal Article
%$ pmid:37567226
%R 10.1088/1361-6560/acefa1
%U https://inrepo02.dkfz.de/record/278407