Simulating the head of a TrueBeam linear particle accelerator and calculating the photoneutron spectrum on the central axis of a 10-MV photon using particle and heavy-ion transport system code.
Radiat Prot Dosimetry
; 200(8): 779-790, 2024 Jun 03.
Article
in En
| MEDLINE
| ID: mdl-38767288
ABSTRACT
Photon energy is higher than the (γ,n) threshold, allowing it to interact with the nuclei of materials with high z properties and liberate fast neutrons. This represents a potentially harmful source of radiation for humans and the environment. This study validated the Monte Carlo simulation, using the particle and heavy-ion transport code system (PHITS) on a TrueBeam 10-MV linear particle accelerator's head shielding model and then used this PHITS code to simulate a photo-neutron spectrum for the transport of the beam. The results showed that, when comparing the simulated to measured PDD and crosslines, 100% of the γ-indexes were <1 (γ3%/3mm) for both simulations, for both phase-space data source and a mono energy source. Neutron spectra were recorded in all parts of the TrueBeam's head, as well as photon neutron spectra at three points on the beamline.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Particle Accelerators
/
Computer Simulation
/
Monte Carlo Method
/
Photons
/
Neutrons
Limits:
Humans
Language:
En
Journal:
Radiat Prot Dosimetry
Year:
2024
Document type:
Article
Affiliation country: