title: Nuclear resonant scattering measurements on (57)Fe by multichannel scaling with a 64-pixel silicon avalanche photodiode linear-array detector.
abstract: We developed a silicon avalanche photodiode (Si-APD) linear-array detector for use in nuclear resonant scattering experiments using synchrotron X-rays. The Si-APD linear array consists of 64 pixels (pixel size: 100 × 200 μm(2)) with a pixel pitch of 150 μm and depletion depth of 10 μm. An ultrafast frontend circuit allows the X-ray detector to obtain a high output rate of >10(7) cps per pixel. High-performance integrated circuits achieve multichannel scaling over 1024 continuous time bins with a 1 ns resolution for each pixel without dead time. The multichannel scaling method enabled us to record a time spectrum of the 14.4 keV nuclear radiation at each pixel with a time resolution of 1.4 ns (FWHM). This method was successfully applied to nuclear forward scattering and nuclear small-angle scattering on (57)Fe.
authors.affiliation: Institute of Materials Structure Science, KEK, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Kishimoto
authors.affiliation: Kansai Photon Science Institute, JAEA, 1-1-1 Kouto, Sayo-cho, Hyogo 679-5198, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Mitsui
authors.affiliation: Institute of Materials Structure Science, KEK, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan.
authors.forename: R
authors.initials: R
authors.lastname: Haruki
authors.affiliation: Japan Synchrotron Radiation Research Institute, 1-1-1 Kouto, Sayo-cho, Hyogo 679-5198, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Yoda
authors.affiliation: Institute of Particle and Nuclear Physics, KEK, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Taniguchi
authors.affiliation: Institute of Particle and Nuclear Physics, KEK, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Shimazaki
authors.affiliation: Institute of Particle and Nuclear Physics, KEK, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Ikeno
authors.affiliation: Institute of Particle and Nuclear Physics, KEK, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Saito
authors.affiliation: Institute of Particle and Nuclear Physics, KEK, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Tanaka