Neutron spectra in a 15 MV LINAC

H. R. Vega-Carrillo, Wei Han Chu, Chuan Jong Tung, Jen Hong Lan

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

Neutron spectra were calculated inside the treatment hall of a 15 MV LINAC, calculations were carried out using Monte Carlo methods. With a Bonner sphere spectrometer with pairs of thermoluminiscent dosimeters the neutron spectrum at 100 cm from the isocenter was measured and compared with the calculated spectrum. All the spectra in the treatment hall show the presence of evaporation and knock-on neutrons; also the room-return due to the hall features is shown. In the maze the large contribution are due to epithermal and thermal neutrons. A good agreement between the calculated and measured spectrum at 100 cm was noticed, from this comparison the differences are attributed to the water content in the concrete of the hall.

Original languageEnglish
Title of host publicationEleventh Mexican Symposium on Medical Physics
Pages158-161
Number of pages4
DOIs
StatePublished - 2010
Event11th Mexican Symposium on Medical Physics - Mexico City, Mexico
Duration: 19 03 201022 03 2010

Publication series

NameAIP Conference Proceedings
Volume1310
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference11th Mexican Symposium on Medical Physics
Country/TerritoryMexico
CityMexico City
Period19/03/1022/03/10

Keywords

  • LINAC
  • Monte Carlo
  • Neutrons

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