Determination of optimal energy window for measurement of prompt gammas from proton beam by monte carlo simulations

Chul Hee Min, Jang Guen Park, So Hyun An, Chan Hyeong Kim

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The range of a proton beam in a patient can be determined by scanning the distribution of the prompt gammas emitted from the beam passage. However, this method suffers from a high level of background gammas, especially in the case of high energy proton beams. The present study determined the optimal energy window for selective measurement of the prompt gammas, effectively discriminating background gammas, for a prompt gamma scanning system. To that end, the energy spectra of the prompt and background gammas were calculated by transporting the protons and other secondary particles with MCNPX. A detailed analysis of these spectra revealed that the optimal energy window is 4-10 MeV. The application of the energy window to simulated and measured data confirmed that the range of a proton beam in a patient can be determined much more accurately by employing the optimal energy window.

Original languageEnglish
Pages (from-to)28-31
Number of pages4
JournalJournal of Nuclear Science and Technology
Volume45
DOIs
Publication statusPublished - 2008

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering

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