TY - JOUR
T1 - Applications of a micro-pixel chamber (μPIC) based, time-resolved neutron imaging detector at pulsed neutron beams
AU - Parker, J. D.
AU - Harada, M.
AU - Hattori, K.
AU - Iwaki, S.
AU - Kabuki, S.
AU - Kishimoto, Y.
AU - Kubo, H.
AU - Kurosawa, S.
AU - Matsuoka, Y.
AU - Miuchi, K.
AU - Mizumoto, T.
AU - Nishimura, H.
AU - Oku, T.
AU - Sawano, T.
AU - Shinohara, T.
AU - Suzuki, J. I.
AU - Takada, A.
AU - Tanimori, T.
AU - Ueno, K.
AU - Ikeno, M.
AU - Tanaka, M.
AU - Uchida, T.
PY - 2014/1/1
Y1 - 2014/1/1
N2 - The realization of high-intensity, pulsed spallation neutron sources such as J-PARC in Japan and SNS in the US has brought time-of-flight (TOF) based neutron techniques to the fore and spurred the development of new detector technologies. When combined with high-resolution imaging, TOF-based methods become powerful tools for direct imaging of material properties, including crystal structure/internal strain, isotopic/temperature distributions, and internal and external magnetic fields. To carry out such measurements in the high-intensities and high gamma backgrounds found at spallation sources, we have developed a new time-resolved neutron imaging detector employing a micro-pattern gaseous detector known as the micro-pixel chamber (μPIC) coupled with a field-programmable-gate-array-based data acquisition system. The detector combines 100μm-level (σ) spatial and sub-μs time resolutions with low gamma sensitivity of less than 10-12 and a rate capability on the order of Mcps (mega-counts-per-second). Here, we demonstrate the application of our detector to TOF-based techniques with examples of Bragg-edge transmission and neutron resonance transmission imaging (with computed tomography) carried out at J-PARC. We also consider the direct imaging of magnetic fields with our detector using polarized neutrons.
AB - The realization of high-intensity, pulsed spallation neutron sources such as J-PARC in Japan and SNS in the US has brought time-of-flight (TOF) based neutron techniques to the fore and spurred the development of new detector technologies. When combined with high-resolution imaging, TOF-based methods become powerful tools for direct imaging of material properties, including crystal structure/internal strain, isotopic/temperature distributions, and internal and external magnetic fields. To carry out such measurements in the high-intensities and high gamma backgrounds found at spallation sources, we have developed a new time-resolved neutron imaging detector employing a micro-pattern gaseous detector known as the micro-pixel chamber (μPIC) coupled with a field-programmable-gate-array-based data acquisition system. The detector combines 100μm-level (σ) spatial and sub-μs time resolutions with low gamma sensitivity of less than 10-12 and a rate capability on the order of Mcps (mega-counts-per-second). Here, we demonstrate the application of our detector to TOF-based techniques with examples of Bragg-edge transmission and neutron resonance transmission imaging (with computed tomography) carried out at J-PARC. We also consider the direct imaging of magnetic fields with our detector using polarized neutrons.
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U2 - 10.1088/1742-6596/502/1/012048
DO - 10.1088/1742-6596/502/1/012048
M3 - Conference article
AN - SCOPUS:84899640754
VL - 502
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
SN - 1742-6588
IS - 1
M1 - 012048
T2 - 1st Conference on Light and Particle Beams in Materials Science 2013, LPBMS 2013
Y2 - 29 August 2013 through 31 August 2013
ER -