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SUMMARY:Simulation of a pencil proton beam in a water phantom using variou
 s monte carlo codes.
DTSTART;VALUE=DATE-TIME:20110714T150000Z
DTEND;VALUE=DATE-TIME:20110714T170000Z
DTSTAMP;VALUE=DATE-TIME:20260715T040806Z
UID:indico-contribution-5011@events.saip.org.za
DESCRIPTION:Speakers: Carmen Jacobs (University of the Western Cape)\n\nTh
 is study investigates the Pencil Proton Beam scanning technique to determi
 ne the dosage obtained during clinical treatments due to secondary radiati
 on. Simulations in MCNPX and GEANT4/GATE are of particular interest in thi
 s study. The study is based on a variation of the traditional Hogstrom Pen
 cil beam model for electron beams to provide a description of clinical pro
 ton beams. This new Hogstrom model is based on the Fermi-Eyges theory of p
 article transport.\n \nThe method used in this investigation is to simulat
 e a proton pencil beam entering a water phantom at various discrete energi
 es and determining the secondary particles distributed throughout the wate
 r phantom by studying both Coulombic and Nuclear interactions of the incid
 ent proton in water. This allows one to determine how much of the total do
 sage obtained by the patient is from the primary particle and what part of
  the dosage is due to the secondary particles. In order to accurately comp
 are the Monte Carlo codes\, a further study was done to understand the und
 erlying physics principles used by MCNPX and GEANT4. The development of an
  analytical model for primary proton beams which included depth distributi
 on\, propagations of protons in matter\, and scattering theory was also in
 vestigated. \n\nBesides comparing Monte Carlo codes this study also has re
 al life implications. Pencil beam scanning leads to improving and advancin
 g treatment planning.\n\nhttps://events.saip.org.za/event/7/contributions/
 5011/
LOCATION: Asteria
URL:https://events.saip.org.za/event/7/contributions/5011/
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