Development of a neutron imaging detector based on the μPIC micro-pixel gaseous chamber

Joseph D. Parker, Kaori Hattori, Chihiro Ida, Satoru Iwaki, Shigeto Kabuki, Hidetoshi Kubo, Shunsuke Kurosawa, Kentaro Miuchi, Hironobu Nishimura, Michiaki Takahashi, Toru Tanimori, Kazuki Ueno

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

2 Citations (Scopus)

Abstract

A new detector employing the micro-pixel gaseous chamber (μPIC) is currently being developed as a thermal neutron imaging detector for applications in small angle neutron scattering (SANS), neutron radiography, and radioactive material detection. Neutron detection is achieved through the 3He(n, p)3H absorption reaction by adding 3He to the usual Argon-Ethane gas mixture. The μPIC, with a pixel pitch of 400 microns, is coupled with an FPGA-based data acquisition system with a 100 MHz internal clock. This combined system has excellent spatial (< 1mm) and time (10 ns) resolutions and is capable of handling counting rates greater than 5 MHz. These qualities make it well suited to SANS measurements at pulsed neutron sources. Here, we report the performance of a new dedicated μPIC-based neutron imaging detector system along with the results of a test experiment at a small Tandem accelerator-based neutron source currently under development at Kyoto University. This new detector features a 10 x 10 x 5 cm3 active volume and operates at gas pressures up to 2 atm. With this design, we expect a neutron detection efficiency of ∼30% for a gas mixture containing 30% 3He at a total pressure of 2 atm. Additionally, an improved FPGA encoder program allows the simultaneous measurement of the track length and energy deposition, allowing a finer position resolution and strong rejection of the gamma-ray and fast neutron backgrounds.

Original languageEnglish
Title of host publication2009 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2009
Pages1107-1112
Number of pages6
DOIs
Publication statusPublished - 2009 Dec 1
Externally publishedYes
Event2009 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2009 - Orlando, FL, United States
Duration: 2009 Oct 252009 Oct 31

Publication series

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

Other

Other2009 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2009
CountryUnited States
CityOrlando, FL
Period09/10/2509/10/31

Keywords

  • Field programmable gate arrays
  • Nuclear imaging

ASJC Scopus subject areas

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

Fingerprint Dive into the research topics of 'Development of a neutron imaging detector based on the μPIC micro-pixel gaseous chamber'. Together they form a unique fingerprint.

Cite this