Monte Carlo Study of Reference Photon Fields in the Irradiation Halls of the Czech Metrology Institute

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00177016%3A_____%2F07%3A%230000161" target="_blank" >RIV/00177016:_____/07:#0000161 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Monte Carlo Study of Reference Photon Fields in the Irradiation Halls of the Czech Metrology Institute

Popis výsledku v původním jazyce

The MCNPX code was used to obtain characteristics of collimated photon beams from a metrological 60Co source and a former radiotherapy 60Co irradiator ?Chisobalt 2 B75? exploited for calibration and verification of dosimeters in the Czech Metrology Institute ? Inspectorate for Ionizing Radiation (CMI-IIR; Czech metrology body). First, for each source, a longitudinal profile of air-kerma rate on the beam axis and a transversal profile of air-kerma rate at a distance of 1 m from the front of the collimator were simulated and the results were compared to the experimental data obtained with ionization chambers. Relative comparison shows good agreement. Second, the number of scattered photons in the fluence spectra along and across the beam axes and their contribution to air-kerma was specified. Third, the individual contributions of collimator, air, floor, walls, mobile platform, and other parts of the irradiation halls to the overall air-kerma on the beam axes were calculated.

Název v anglickém jazyce

Monte Carlo Study of Reference Photon Fields in the Irradiation Halls of the Czech Metrology Institute

Popis výsledku anglicky

The MCNPX code was used to obtain characteristics of collimated photon beams from a metrological 60Co source and a former radiotherapy 60Co irradiator ?Chisobalt 2 B75? exploited for calibration and verification of dosimeters in the Czech Metrology Institute ? Inspectorate for Ionizing Radiation (CMI-IIR; Czech metrology body). First, for each source, a longitudinal profile of air-kerma rate on the beam axis and a transversal profile of air-kerma rate at a distance of 1 m from the front of the collimator were simulated and the results were compared to the experimental data obtained with ionization chambers. Relative comparison shows good agreement. Second, the number of scattered photons in the fluence spectra along and across the beam axes and their contribution to air-kerma was specified. Third, the individual contributions of collimator, air, floor, walls, mobile platform, and other parts of the irradiation halls to the overall air-kerma on the beam axes were calculated.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BG - Jaderná, atomová a molekulová fyzika, urychlovače

OECD FORD obor

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Projekt

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Návaznosti

R - Projekt Ramcoveho programu EK

Rok uplatnění

2007

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

ISSN

0168-9002

e-ISSN

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Svazek periodika

580

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

5

Strana od-do

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Kód UT WoS článku

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EID výsledku v databázi Scopus

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