0

Full Content is available to subscribers

Subscribe/Learn More  >

GEANT4 Simulations Response of Cylindrical Silicon-on-Insulator Microdosimeter Array Detector for Neutrons Detection

[+] Author Affiliations
Ming Lei, Shu-Huan Liu, Chao-Hui He, Cen Xiong

Xi’an Jiaotong University, Xi’an, Shaanxi, China

Paper No. ICONE21-15279, pp. V001T04A010; 8 pages
doi:10.1115/ICONE21-15279
From:
  • 2013 21st International Conference on Nuclear Engineering
  • Volume 1: Plant Operations, Maintenance, Engineering, Modifications, Life Cycle and Balance of Plant; Nuclear Fuel and Materials; Radiation Protection and Nuclear Technology Applications
  • Chengdu, China, July 29–August 2, 2013
  • Conference Sponsors: Nuclear Engineering Division
  • ISBN: 978-0-7918-5578-2
  • Copyright © 2013 by ASME

abstract

In the experiment about the radiation protection and radiation biology, microdosimeter is often used as a tool for tissue equivalent microdosimetry measurement. The characteristics of neutron energy response for the cylindrical SOI (Silicon-on-Insulator) microdosimeter arrays detector designed with different technology structures are simulated and compared with GEANT4 toolkit. In this work, the distributions of neutron linear energy spectra which influenced by influence angles of incident particles, types and depth of conversion materials are studied. The characteristics of neutron energy response with different kinds of conversion materials of the SOI microdosimeter arrays are mainly analyzed. Meanwhile, we also calculate dose distributions of linear energy spectra in a kind of novel cylindrical Silicon-on-Insulator microdosimeter arrays detector (with sensitive sizes to 1um and 2um) due to 252Cf neutron source. Comparisons between simulated data with the SOI microdosimeter measurement and previous reported experimental data with TEPC (tissue-equivalent proportional counter) show a rather good agreement. Differences partly due to different kinds of conversion materials are analyzed. The results show that LDPE (low-density polyethylene) is a better kind of tissue equivalent material for neutron microdosimetry, but the differences in the detection of higher linear energy range 10–100KeV/um between LDPE and other tissue-equivalent materials may be caused by the lack of microelements for LDPE material and the sensitivity to the angle of incidence in the linear energy range 10–100KeV/um also should not be neglected for the distorted spectrum caused by setting angular deviation of more than 45 degree on the detector surface. The main reason of the influence on the linear energy spectra from the larger angular deviation incidence is that the design of cylindrical shell structure of sensitive volume could increase the recorded length of the tracks of secondary particles of larger angular incidence neutron included in the sensitive volume cell. The results of calculations and analyses could provide some important information for the optimization to the SOI microdosimeter measurement.

Copyright © 2013 by ASME

Figures

Tables

Interactive Graphics

Video

Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In