888 research outputs found

    Characterisation of a Thin Fully Depleted SOI Pixel Sensor with High Momentum Charged Particles

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    This paper presents the results of the characterisation of a thin, fully depleted pixel sensor manufactured in SOI technology on high-resistivity substrate with high momentum charged particles. The sensor is thinned to 70 ÎĽ\mum and a thin phosphor layer contact is implanted on the back-plane. Its response is compared to that of thick sensors of same design in terms of signal and noise, detection efficiency and single point resolution based on data collected with 300 GeV pions at the CERN SPS. We observe that the charge collected and the signal-to-noise ratio scale according to the estimated thickness of the sensitive volume and the efficiency and single point resolution of the thinned chip are comparable to those measured for the thick sensors.Comment: 8 pages, 3 figures, submitted to Nucl. Instr. and Meth., section

    Characterisation of a Thin Fully-Depleted SOI Pixel Sensor with Soft X-ray Radiation

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    This paper presents the results of the characterisation of a back-illuminated pixel sensor manufactured in Silicon-On-Insulator technology on a high-resistivity substrate with soft X-rays. The sensor is thinned and a thin Phosphor layer contact is implanted on the back-plane. The response to X-rays from 2.12 up to 8.6 keV is evaluated with fluorescence radiation at the LBNL Advanced Light Source.Comment: 9 pages, 5 figures, submitted to Nuclear Instruments and Methods

    Discovering and Understanding “Sabbath Rest” in Hebrews 3:7-4:11

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    The book of Hebrews is a complex and intricate book full of Old Testament references. Intertextuality, or the New Testament’s use of the Old Testament, plays an important role in Hebrews, specifically in the context of 3:7-4:11. In this passage there occurs a phrase unique to the whole Bible, “Sabbath rest” (4:9). While this phrase seems to point to some sort of eschatological reality, there are numerous factors which play a role in determining what this “Sabbath rest” actually is. In order to come to a proper understanding of the meaning and significance of this phrase, an analysis of the author’s use of intertextuality must be conducted

    Studies of Vertex Tracking with SOI Pixel Sensors for Future Lepton Colliders

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    This paper presents a study of vertex tracking with a beam hodoscope consisting of three layers of monolithic pixel sensors in SOI technology on high-resistivity substrate. We study the track extrapolation accuracy, two-track separation and vertex reconstruction accuracy in pion-Cu interactions with 150 and 300 GeV/c pions at the CERN SPS. Results are discussed in the context of vertex tracking at future lepton colliders.Comment: 15 pages, 8 figures, submitted to Nuclear Instruments and Methods

    Cluster Imaging with a Direct Detection CMOS Pixel Sensor in Transmission Electron Microscopy

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    A cluster imaging technique for Transmission Electron Microscopy with a direct detection CMOS pixel sensor is presented. Charge centre-of-gravity reconstruction for individual electron clusters improves the spatial resolution and thus the point spread function. Data collected with a CMOS sensor with 9.5 micron pixels show an improvement of a factor of two in point spread function to 2.7 micron at 300 keV and of a factor of three in the image contrast, compared to traditional bright field illumination.Comment: 6 pages, 3 figures, submitted to Nucl. Instr. Meth.

    Monolithic Pixel Sensors in Deep-Submicron SOI Technology with Analog and Digital Pixels

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    This paper presents the design and test results of a prototype monolithic pixel sensor manufactured in deep-submicron fully-depleted Silicon-On-Insulator (SOI) CMOS technology. In the SOI technology, a thin layer of integrated electronics is insulated from a (high-resistivity) silicon substrate by a buried oxide. Vias etched through the oxide allow to contact the substrate from the electronics layer, so that pixel implants can be created and a reverse bias can be applied. The prototype chip, manufactured in OKI 0.15 micron SOI process, features both analog and digital pixels on a 10 micron pitch. Results of tests performed with infrared laser and 1.35 GeV electrons and a first assessment of the effect of ionising and non-ionising doses are discussed.Comment: 5 pages, 7 figures, submitted to Nuclear Instruments and Methods

    Bayesian perceptual inference in linear Gaussian models

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    The aim of this paper is to provide perceptual scientists with a quantitative framework for modeling a variety of common perceptual behaviors, and to unify various perceptual inference tasks by exposing their common computational underpinnings. This paper derives a model Bayesian observer for perceptual contexts with linear Gaussian generative processes. I demonstrate the relationship between four fundamental perceptual situations by expressing their corresponding posterior distributions as consequences of the model's predictions under their respective assumptions
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