P. O’Connor
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View article: Integrating the LSST camera
Integrating the LSST camera Open
SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan
View article: Development and characterization of the flight model spectrometer onboard LuSEE-Night
Development and characterization of the flight model spectrometer onboard LuSEE-Night Open
The Cosmic Microwave Background (CMB) is radiation released some 400 thousand years after the Big Bang when the primordial cosmic plasma made of mostly hydrogen and helium atoms immersed in the sea of photons and electrons cools to the tem…
View article: Design and Characterization of the Engineering Model of the Spectrometer Onboard LuSEE‐Night
Design and Characterization of the Engineering Model of the Spectrometer Onboard LuSEE‐Night Open
The Lunar Surface Electromagnetics Explorer—Night, LuSEE‐Night, is a low‐frequency radio astronomy experiment that will explore the cosmic Dark Ages signal on the radio‐quiet farside of the Moon. The LuSEE‐Night carries a radio frequency s…
View article: Design and Characterization of the Engineering Model of the Spectrometer Onboard LuSEE-Night
Design and Characterization of the Engineering Model of the Spectrometer Onboard LuSEE-Night Open
The Lunar Surface Electromagnetics Explorer - Night, LuSEE-Night, is a low-frequency radio astronomy experiment that will explore the cosmic Dark Ages signal on the radio quiet farside of the Moon. The LuSEE-Night carries a radio frequency…
View article: Astro2020 Science White Paper: Cosmological Synergies Enabled by Joint Analysis of Multi-probe data from WFIRST, Euclid, and LSST
Astro2020 Science White Paper: Cosmological Synergies Enabled by Joint Analysis of Multi-probe data from WFIRST, Euclid, and LSST Open
NASA, NSF, and DOE will collectively spend well over $4B this decade and the next on missions and surveys that have dark energy cosmology as one of their primary drivers. WFIRST, Euclid, and LSST are all missions designed to perform dedica…
View article: The benefits of index telephone consultations in patients referred on the two-week wait colorectal cancer pathway
The benefits of index telephone consultations in patients referred on the two-week wait colorectal cancer pathway Open
Introduction The coronavirus disease 2019 (COVID-19) pandemic led to hospitals in the UK substituting face-to-face (FtF) clinics with virtual clinic (VC) appointments. We evaluated the use of virtual two-week wait (2-ww) lower gastrointest…
View article: Laboratory Measurements of Instrumental Signatures of the LSST Camera Focal Plane
Laboratory Measurements of Instrumental Signatures of the LSST Camera Focal Plane Open
Electro-optical testing and characterization of the Vera C. Rubin Observatory Legacy Survey of Space and Time (LSST) Camera focal plane, consisting of 205 charge-coupled devices (CCDs) arranged into 21 stand-alone Raft Tower Modules (RTMs)…
View article: Laboratory measurements of instrumental signatures of the LSST camera focal plane
Laboratory measurements of instrumental signatures of the LSST camera focal plane Open
Electro-optical testing and characterization of the Vera C. Rubin Observatory\nLegacy Survey of Space and Time (LSST) Camera focal plane, consisting of 205\ncharge-coupled devices (CCDs) arranged into 21 stand-alone Raft Tower Modules\n(RT…
View article: The Baryon Mapping Experiment (BMX), a 21cm intensity mapping pathfinder
The Baryon Mapping Experiment (BMX), a 21cm intensity mapping pathfinder Open
The Baryon Mapping eXperiment (BMX) is an interferometric array designed as a pathfinder for a future post-reionization 21 cm intensity mapping survey. It consists of four 4-meter parabolic reflectors each having offset pyramidal horn feed…
View article: Basic Research Needs for High Energy Physics Detector Research & Development: Report of the Office of Science Workshop on Basic Research Needs for HEP Detector Research and Development: December 11-14, 2019
Basic Research Needs for High Energy Physics Detector Research & Development: Report of the Office of Science Workshop on Basic Research Needs for HEP Detector Research and Development: December 11-14, 2019 Open
Transformative discovery in science is driven by innovation in technology. Our boldest undertakings in particle physics have at their foundation precision instrumentation. To reveal the profound connections underlying everything we see fro…
View article: Uniformity and stability of the LSST focal plane
Uniformity and stability of the LSST focal plane Open
The Large Synoptic Survey Telescope (LSST) focal plane consists of 21 autonomous modules [raft tower modules (RTMs)], each of which contains nine thick, fully depleted 4k × 4k CCDs with associated control and readout electronics. To enable…
View article: Research and Development for HI Intensity Mapping
Research and Development for HI Intensity Mapping Open
Development of the hardware, data analysis, and simulation techniques for large compact radio arrays dedicated to mapping the 21 cm line of neutral hydrogen gas has proven to be more difficult than imagined twenty years ago when such teles…
View article: Uniformity and Stability of the LSST Focal Plane
Uniformity and Stability of the LSST Focal Plane Open
The LSST focal plane consists of 21 autonomous modules ("Raft Tower Modules", RTM), each of which contains nine thick, fully-depleted 4K x 4K CCDs with associated control and readout electronics. To enable LSST's repetitive short-exposure …
View article: Connectivity and functional verification for the LSST science raft towers
Connectivity and functional verification for the LSST science raft towers Open
The LSST Camera focal plane will be constructed with 21 144-Mpixel modules (\\Raft Tower Module", RTM). An extensive operational test is performed to confirm the integrity of all connections and to verify the basic functionality. Each RTM …
View article: High fidelity point-spread function retrieval in the presence of electrostatic, hysteretic pixel response
High fidelity point-spread function retrieval in the presence of electrostatic, hysteretic pixel response Open
We employ electrostatic conversion drift calculations to match CCD pixel\nsignal covariances observed in flat field exposures acquired using candidate\nsensor devices for the LSST Camera. We thus constrain pixel geometry\ndistortions prese…
View article: Integrated system tests of the LSST raft tower modules
Integrated system tests of the LSST raft tower modules Open
The science focal plane of the LSST camera is made up of 21 fully autonomous 144 Mpixel imager units designated raft tower modules (RTM). These imagers incorporate nine 4K x 4K fully-depleted CCDs and 144 channels of readout electronics, i…
View article: Stability of the Baseline Holder in Readout Circuits for Radiation Detectors
Stability of the Baseline Holder in Readout Circuits for Radiation Detectors Open
Baseline holder (BLH) circuits are used widely to stabilize the analog output of application-specific integrated circuits (ASICs) for high-count-rate applications. The careful design of BLH circuits is vital to the overall stability of the…
View article: Verification Of Absolute Calibration Of Quantum Efficiency For Lsst Ccds
Verification Of Absolute Calibration Of Quantum Efficiency For Lsst Ccds Open
We describe a system to measure the Quantum Efficiency in the wavelength range of 300nm to 1100nm of 40x40 mm n-channel CCD sensors for the construction of the 3.2 gigapixel LSST focal plane. The technique uses a series of instruments to c…
View article: Test of a 32-channel prototype ASIC for photon counting application
Test of a 32-channel prototype ASIC for photon counting application Open
A new low-power application-specific integrated circuit (ASIC) for Cadmium Zinc Telluride (CZT) detectors for single-photon emission computed tomography (SPECT) application is being developed at BNL. As the first step, a 32-channel prototy…