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Simulations of the HEX payload using Geant4

  • Manju Sudhakar*
  • , Santosh Vadawale
  • , P. Sreekumar
  • *Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

CHANDRAYAAN-I, India's first mission to the Moon, carries on board, the High Energy X-ray Spectrometer (HEX) payload. This is a spectroscopic experiment, designed to measure the line and continuum flux from the Lunar surface in the 30-250 keV energy range. The main science goal of HEX is to map the strength of the 46.5 keV line, emitted when volatile 222Rn decays to 210Pb, across the Lunar surface. Mapping the intensity of this line as a function of Lunar latitude, is an indirect tracer of the migration of volatile substances (like water) over the Lunar surface. This paper addresses various design optimizations of the HEX payload, spectral redistribution function of the primary detector, and estimation of the detector background due to Lunar γ-ray Albedo and Galactic Cosmic Ray protons, using the software toolkit, Geant4.

Original languageEnglish
Title of host publication2007 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS-MIC
Pages2351-2357
Number of pages7
DOIs
Publication statusPublished - 2007
Event2007 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS-MIC - Honolulu, HI, United States
Duration: 27-10-200703-11-2007

Publication series

NameIEEE Nuclear Science Symposium Conference Record
Volume3
ISSN (Print)1095-7863

Conference

Conference2007 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS-MIC
Country/TerritoryUnited States
CityHonolulu, HI
Period27-10-0703-11-07

All Science Journal Classification (ASJC) codes

  • Radiation
  • Nuclear and High Energy Physics
  • Radiology Nuclear Medicine and imaging

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