The Experts below are selected from a list of 20577 Experts worldwide ranked by ideXlab platform
S.y. Kim - One of the best experts on this subject based on the ideXlab platform.
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First limit on WIMP cross section with low background CsI(Tℓ) Crystal Detector
Physics Letters B, 2006Co-Authors: H. S. Lee, H. J. Kim, H. C. Bhang, J.h. Choi, I.s. Hahn, M.j. Hwang, S.c. Kim, S.k. Kim, S.y. KimAbstract:AbstractThe Korea Invisible Mass Search (KIMS) Collaboration has been carrying out WIMP search experiment with CsI(Tℓ) Crystal Detectors at the YangYang Underground Laboratory. A successful reduction of the internal background of the Crystal was done and a good pulse shape discrimination was achieved. We report the first result on WIMP search obtained with 237 kg days data using one full-size CsI(Tℓ) Crystal of 6.6 kg mass
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First limit on wimp cross section with low background csi(tl) Crystal Detector
Physics Letters B, 2005Co-Authors: Hee-jung Lee, H. J. Kim, H. C. Bhang, J.h. Choi, I.s. Hahn, M.j. Hwang, S.c. Kim, S. H. Kim, S.y. KimAbstract:Abstract The Korea Invisible Mass Search (KIMS) Collaboration has been carrying out WIMP search experiment with CsI ( T l ) Crystal Detectors at the YangYang Underground Laboratory. A successful reduction of the internal background of the Crystal was done and a good pulse shape discrimination was achieved. We report the first result on WIMP search obtained with 237 kg days data using one full-size CsI ( T l ) Crystal of 6.6 kg mass.
R Partridge - One of the best experts on this subject based on the ideXlab platform.
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thermal detection of single e h pairs in a biased silicon Crystal Detector
Applied Physics Letters, 2018Co-Authors: R K Romani, P L Brink, B Cabrera, M Cherry, T Howarth, N A Kurinsky, R A Moffatt, R PartridgeAbstract:We demonstrate that individual electron-hole pairs are resolved in a 1 cm2 by 4 mm thick silicon Crystal (0.93 g) operated at ∼35 mK. One side of the Detector is patterned with two quasiparticle-trap-assisted electro-thermal-feedback transition edge sensor arrays held near ground potential. The other side contains a bias grid with 20% coverage. Bias potentials up to ±160 V were used in the work reported here. A fiber optic provides 650 nm (1.9 eV) photons that each produce an electron-hole (e– h+) pair in the Crystal near the grid. The energy of the drifting charges is measured with a phonon sensor noise σ ∼0.09 e– h+ pair. The observed charge quantization is nearly identical for h+s or e–s transported across the Crystal.
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thermal detection of single e h pairs in a biased silicon Crystal Detector
arXiv: Instrumentation and Detectors, 2017Co-Authors: R K Romani, P L Brink, B Cabrera, M Cherry, T Howarth, N A Kurinsky, R A Moffatt, R PartridgeAbstract:We demonstrate that individual electron-hole pairs are resolved in a 1 cm$^2$ by 4 mm thick silicon Crystal (0.93 g) operated at $\sim$35 mK. One side of the Detector is patterned with two quasiparticle-trap-assisted electro-thermal-feedback transition edge sensor (QET) arrays held near ground potential. The other side contains a bias grid with 20\% coverage. Bias potentials up to $\pm$ 160 V were used in the work reported here. A fiber optic provides 650~nm (1.9 eV) photons that each produce an electron-hole ($e^{-} h^{+}$) pair in the Crystal near the grid. The energy of the drifting charges is measured with a phonon sensor noise $\sigma$ $\sim$0.09 $e^{-} h^{+}$ pair. The observed charge quantization is nearly identical for $h^+$'s or $e^-$'s transported across the Crystal.
Tatiana Pikuz - One of the best experts on this subject based on the ideXlab platform.
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In Situ Characterization of XFEL Beam Intensity Distribution and Focusability by High-Resolution LiF Crystal Detector
Springer Proceedings in Physics, 2018Co-Authors: Tatiana Pikuz, A. Ya. Faenov, Takeshi Matsuoka, B. Albertazzi, Norimasa Ozaki, N. Hartely, O. Muray Ricardo Arturo, T. Yabuuchi, Hideaki Habara, Satoshi MatsuyamaAbstract:We present here a new diagnostics based on using LiF Crystal Detectors that are able to perform measurements an intensity distribution of X-rays beams with diameters ranging from some microns up to some centimetres with high spatial resolution (~1 µm). In situ, 3D visualization of SACLA XFEL focused beam profile along propagation, including propagation inside photoluminescence solid materials, is demonstrated. Also, a high spatial resolution control a quality of targets used in optical laser pump—XFEL probe HEDS experiments is proposed.
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3d visualization of xfel beam focusing properties using lif Crystal x ray Detector
Scientific Reports, 2016Co-Authors: Tatiana Pikuz, Anatoly Ya. Faenov, Takeshi Matsuoka, B. Albertazzi, Norimasa Ozaki, Satoshi Matsuyama, Kazuto Yamauchi, Yuichi InubushiAbstract:Here, we report, that by means of direct irradiation of lithium fluoride a (LiF) Crystal, in situ 3D visualization of the SACLA XFEL focused beam profile along the propagation direction is realized, including propagation inside photoluminescence solid matter. High sensitivity and large dynamic range of the LiF Crystal Detector allowed measurements of the intensity distribution of the beam at distances far from the best focus as well as near the best focus and evaluation of XFEL source size and beam quality factor M2. Our measurements also support the theoretical prediction that for X-ray photons with energies ~10 keV the radius of the generated photoelectron cloud within the LiF Crystal reaches about 600 nm before thermalization. The proposed method has a spatial resolution ~ 0.4–2.0 μm for photons with energies 6–14 keV and potentially could be used in a single shot mode for optimization of different focusing systems developed at XFEL and synchrotron facilities.
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Propagation-based phase-contrast enhancement of nanostructure images using a debris-free femtosecond-laser-driven cluster-based plasma soft x-ray source and an LiF Crystal Detector
Applied optics, 2009Co-Authors: Tatiana Pikuz, Anatoly Ya. Faenov, S. V. Gasilov, Igor Yu. Skobelev, Yuji Fukuda, Masaki Kando, Hideyuki Kotaki, T. Homma, Keigo Kawase, Yukio HayashiAbstract:We demonstrate in-line phase-contrast imaging of nanothickness foils by using a relatively large, polychromatic, debris-free femtosecond-laser-driven cluster-based plasma soft x-ray source, and a high-resolution, large dynamic range LiF Crystal Detector. The spatial coherence length of radiation in our setup reached a value of 5 μm on the sample plane, which is enough to observe phase-contrast enhancement in the images registered by the Detector placed only a few hundred micrometers behind the object. We have developed a tabletop soft x-ray emission source, which emits radiation within a 4π sr solid angle, and which allows one to obtain contact and propagation-based phase-contrast imaging of nanostructures with 700 nm spatial resolutions. This advance could be of utility for metrology applications.
B Cabrera - One of the best experts on this subject based on the ideXlab platform.
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thermal detection of single e h pairs in a biased silicon Crystal Detector
Applied Physics Letters, 2018Co-Authors: R K Romani, P L Brink, B Cabrera, M Cherry, T Howarth, N A Kurinsky, R A Moffatt, R PartridgeAbstract:We demonstrate that individual electron-hole pairs are resolved in a 1 cm2 by 4 mm thick silicon Crystal (0.93 g) operated at ∼35 mK. One side of the Detector is patterned with two quasiparticle-trap-assisted electro-thermal-feedback transition edge sensor arrays held near ground potential. The other side contains a bias grid with 20% coverage. Bias potentials up to ±160 V were used in the work reported here. A fiber optic provides 650 nm (1.9 eV) photons that each produce an electron-hole (e– h+) pair in the Crystal near the grid. The energy of the drifting charges is measured with a phonon sensor noise σ ∼0.09 e– h+ pair. The observed charge quantization is nearly identical for h+s or e–s transported across the Crystal.
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thermal detection of single e h pairs in a biased silicon Crystal Detector
arXiv: Instrumentation and Detectors, 2017Co-Authors: R K Romani, P L Brink, B Cabrera, M Cherry, T Howarth, N A Kurinsky, R A Moffatt, R PartridgeAbstract:We demonstrate that individual electron-hole pairs are resolved in a 1 cm$^2$ by 4 mm thick silicon Crystal (0.93 g) operated at $\sim$35 mK. One side of the Detector is patterned with two quasiparticle-trap-assisted electro-thermal-feedback transition edge sensor (QET) arrays held near ground potential. The other side contains a bias grid with 20\% coverage. Bias potentials up to $\pm$ 160 V were used in the work reported here. A fiber optic provides 650~nm (1.9 eV) photons that each produce an electron-hole ($e^{-} h^{+}$) pair in the Crystal near the grid. The energy of the drifting charges is measured with a phonon sensor noise $\sigma$ $\sim$0.09 $e^{-} h^{+}$ pair. The observed charge quantization is nearly identical for $h^+$'s or $e^-$'s transported across the Crystal.
N A Kurinsky - One of the best experts on this subject based on the ideXlab platform.
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thermal detection of single e h pairs in a biased silicon Crystal Detector
Applied Physics Letters, 2018Co-Authors: R K Romani, P L Brink, B Cabrera, M Cherry, T Howarth, N A Kurinsky, R A Moffatt, R PartridgeAbstract:We demonstrate that individual electron-hole pairs are resolved in a 1 cm2 by 4 mm thick silicon Crystal (0.93 g) operated at ∼35 mK. One side of the Detector is patterned with two quasiparticle-trap-assisted electro-thermal-feedback transition edge sensor arrays held near ground potential. The other side contains a bias grid with 20% coverage. Bias potentials up to ±160 V were used in the work reported here. A fiber optic provides 650 nm (1.9 eV) photons that each produce an electron-hole (e– h+) pair in the Crystal near the grid. The energy of the drifting charges is measured with a phonon sensor noise σ ∼0.09 e– h+ pair. The observed charge quantization is nearly identical for h+s or e–s transported across the Crystal.
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thermal detection of single e h pairs in a biased silicon Crystal Detector
arXiv: Instrumentation and Detectors, 2017Co-Authors: R K Romani, P L Brink, B Cabrera, M Cherry, T Howarth, N A Kurinsky, R A Moffatt, R PartridgeAbstract:We demonstrate that individual electron-hole pairs are resolved in a 1 cm$^2$ by 4 mm thick silicon Crystal (0.93 g) operated at $\sim$35 mK. One side of the Detector is patterned with two quasiparticle-trap-assisted electro-thermal-feedback transition edge sensor (QET) arrays held near ground potential. The other side contains a bias grid with 20\% coverage. Bias potentials up to $\pm$ 160 V were used in the work reported here. A fiber optic provides 650~nm (1.9 eV) photons that each produce an electron-hole ($e^{-} h^{+}$) pair in the Crystal near the grid. The energy of the drifting charges is measured with a phonon sensor noise $\sigma$ $\sim$0.09 $e^{-} h^{+}$ pair. The observed charge quantization is nearly identical for $h^+$'s or $e^-$'s transported across the Crystal.