TY - GEN
T1 - Mini Compton camera based on an array of Frisch-grid CdZnTe detectors
AU - Lee, Wonho
AU - Bolotnikov, Aleksey
AU - Lee, Taewoong
AU - Camarda, Giuseppe
AU - Cui, Yonggang
AU - Gul, Rubi
AU - Hossain, Anwar
AU - Roy, Utpal
AU - Yang, Ge
AU - James, Ralph
N1 - Funding Information:
This work was supported by U.S. Department of Energy, Office of Defense Nuclear Nonproliferation Research & Development, DNN R&D, U.S. Defense Threat Reduction Agency (DTRA) and BNL's Technology Maturation Award. The manuscript has been authored by Brookhaven Science Associates, LLC under Contract no. DE-AC02-98CH1-886 with the U. S. Department of Energy. This work was supported by the BK21plus (21A20132212094) and National Research Foundation of Korea (NRF) grant (2012M2AA401092) funded by the Korean government (MEST).
Publisher Copyright:
© 2014 IEEE.
PY - 2016/3/10
Y1 - 2016/3/10
N2 - We constructed a mini Compton camera based on an array of CdZnTe detectors and assessed its spectral and imaging properties. The entire array consisted of 6×6 Frisch-grid CdZnTe detectors, each with a size of 6×6×15 mm3. Since it is easier and more practical to grow small CdZnTe crystals rather than large monolithic ones, constructing a mosaic array of parallelepiped crystals can be an effective way to build a more efficient, large-volume detector. With the fully operational CdZnTe array, we measured the energy spectra for 133Ba-, 137Cs-, 60Co-radiation sources; we also located these sources using a Compton imaging approach. Although the Compton camera was small enough to hand-carry, its intrinsic efficiency was several orders higher than those generated in previous research using spatially separated scintillator arrays, because our camera measured the interactions inside the CZT detector array, wherein the detector elements were positioned very close to each other.
AB - We constructed a mini Compton camera based on an array of CdZnTe detectors and assessed its spectral and imaging properties. The entire array consisted of 6×6 Frisch-grid CdZnTe detectors, each with a size of 6×6×15 mm3. Since it is easier and more practical to grow small CdZnTe crystals rather than large monolithic ones, constructing a mosaic array of parallelepiped crystals can be an effective way to build a more efficient, large-volume detector. With the fully operational CdZnTe array, we measured the energy spectra for 133Ba-, 137Cs-, 60Co-radiation sources; we also located these sources using a Compton imaging approach. Although the Compton camera was small enough to hand-carry, its intrinsic efficiency was several orders higher than those generated in previous research using spatially separated scintillator arrays, because our camera measured the interactions inside the CZT detector array, wherein the detector elements were positioned very close to each other.
KW - CdZnTe
KW - Compton Camera
KW - Electronic Collimation
KW - Frisch-Grid
UR - http://www.scopus.com/inward/record.url?scp=84965047560&partnerID=8YFLogxK
U2 - 10.1109/NSSMIC.2014.7431262
DO - 10.1109/NSSMIC.2014.7431262
M3 - Conference contribution
AN - SCOPUS:84965047560
T3 - 2014 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2014
BT - 2014 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2014
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2014
Y2 - 8 November 2014 through 15 November 2014
ER -