title: GEANT4 simulations for low energy proton computerized tomography.
abstract: This work presents the recent results of computer simulations for the low energy proton beam tomographic scanner installed at the cyclotron CV-28 of IEN/CNEN. New computer simulations were performed in order to adjust the parameters of previous simulation within the first experimental results and to understand some specific effects that affected the form of the final proton energy spectra. To do this, the energy and angular spread of the initial proton beam were added, and the virtual phantom geometry was specified more accurately in relation to the real one. As a result, a more realistic view on the measurements was achieved.
authors.affiliation: Federal University of Technology-Parana, UTFPR, Curitiba-PR, Brazil.
authors.forename: Edney
authors.initials: E
authors.lastname: Milhoretto
authors.forename: Hugo R
authors.initials: HR
authors.lastname: Schelin
authors.forename: João A P
authors.initials: JA
authors.lastname: Setti
authors.forename: Valery
authors.initials: V
authors.lastname: Denyak
authors.forename: Sergei A
authors.initials: SA
authors.lastname: Paschuk
authors.forename: Ivan G
authors.initials: IG
authors.lastname: Evseev
authors.forename: Joaquim T
authors.initials: JT
authors.lastname: de Assis
authors.forename: O
authors.initials: O
authors.lastname: Yevseyeva
authors.forename: Ricardo T
authors.initials: RT
authors.lastname: Lopes
authors.forename: Ubirajara M
authors.initials: UM
authors.lastname: Vinagre Filho
mesh_terms: D000535:Aluminum / Q000737:chemistry*; D003198:Computer Simulation; D015233:Models, Statistical; D011522:Protons; D011829:Radiation Dosage; D015203:Reproducibility of Results; D012542:Scattering, Radiation; D012680:Sensitivity and Specificity; D012984:Software; D012986:Software Validation; D014057:Tomography, X-Ray Computed / Q000379:methods*
chemical_list: D011522:Protons; D000535:Aluminum