TY - GEN
T1 - Neutron imaging detector based on the μpIC micro-pixel gaseous chamber
AU - Parker, Joseph D.
AU - Harada, Masahide
AU - Hattori, Kaori
AU - Iwaki, Satoru
AU - Kabuki, Shigeto
AU - Kishimoto, Yuji
AU - Kubo, Hidetoshi
AU - Kurosawa, Shunsuke
AU - Miuchi, Kentaro
AU - Nishimura, Hironobu
AU - Oku, Takayuki
AU - Sawano, Tatsuya
AU - Shinohara, Takenao
AU - Suzuki, Jun Ichi
AU - Tanimori, Toru
AU - Ueno, Kazuki
N1 - Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2011
Y1 - 2011
N2 - A neutron imaging detector employing the micro-pixel gaseous chamber (μPIC) and an FPGA (Field Programmable Gate Array)-based data acquisition system has been developed for applications in small-angle neutron scattering (SANS) and neutron radiography at high-intensity, pulsed neutron sources. A small amount of 3He added to the gas mixture is used as the neutron absorber, with a detection efficiency for thermal neutrons of up to 30%. Our FPGA program permits the simultaneous measurement of the track length and energy deposition for the resulting proton-triton tracks, allowing the separation of the proton and triton for improved position resolution. The detector features a spatial resolution of less than 120 μm, a time resolution of ∼1 μs, and an effective gamma sensitivity of less than 10-9. We report preliminary results from a third test experiment performed in February 2011 at the NOBORU beam line at the J-PARC spallation neutron source. We will also discuss ongoing efforts to optimize the gas mixture for improved position resolution and planned upgrades to the data acquisition system.
AB - A neutron imaging detector employing the micro-pixel gaseous chamber (μPIC) and an FPGA (Field Programmable Gate Array)-based data acquisition system has been developed for applications in small-angle neutron scattering (SANS) and neutron radiography at high-intensity, pulsed neutron sources. A small amount of 3He added to the gas mixture is used as the neutron absorber, with a detection efficiency for thermal neutrons of up to 30%. Our FPGA program permits the simultaneous measurement of the track length and energy deposition for the resulting proton-triton tracks, allowing the separation of the proton and triton for improved position resolution. The detector features a spatial resolution of less than 120 μm, a time resolution of ∼1 μs, and an effective gamma sensitivity of less than 10-9. We report preliminary results from a third test experiment performed in February 2011 at the NOBORU beam line at the J-PARC spallation neutron source. We will also discuss ongoing efforts to optimize the gas mixture for improved position resolution and planned upgrades to the data acquisition system.
KW - Field programmable gate arrays
KW - Nuclear imaging
KW - Radiation detectors
UR - http://www.scopus.com/inward/record.url?scp=84858632555&partnerID=8YFLogxK
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U2 - 10.1109/NSSMIC.2011.6154525
DO - 10.1109/NSSMIC.2011.6154525
M3 - Conference contribution
AN - SCOPUS:84858632555
SN - 9781467301183
T3 - IEEE Nuclear Science Symposium Conference Record
SP - 393
EP - 399
BT - 2011 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2011
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2011 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2011
Y2 - 23 October 2011 through 29 October 2011
ER -