July 2024 – Page 8 – Kavli Institute Pre-Print Publications

Towards efficient machine-learning-based reduction of the cosmic-ray induced background in X-ray imaging detectors: increasing context awareness

Posted by dbos July 23, 2024Stanford

Kavli Affiliate: Sven Herrmann | First 5 Authors: Artem Poliszczuk, Dan Wilkins, Steven W. Allen, Eric D. Miller, Tanmoy Chattopadhyay | Summary: Traditional cosmic ray filtering algorithms used in X-ray imaging detectors aboard space telescopes perform event reconstruction based on the properties of activated pixels above a certain energy threshold, within 3×3 or 5×5 pixel […]

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Towards efficient machine-learning-based reduction of the cosmic-ray induced background in X-ray imaging detectors: increasing context awareness

Posted by dbos July 23, 2024Stanford

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Hydrophilic/ Omniphobic droplet arrays for high-throughput and quantitative enzymology

Posted by dbos July 23, 2024August 5, 2024Hopkins

Kavli Affiliate: Michael Miller | Authors: Byungjin Lee, Fanny Sunden, Michael Miller, Bumshik Pak, Anke Krebber, Stefan Lutz and Polly M Fordyce | Summary: Engineered enzymes with enhanced or novel functions are specific catalysts with wide-ranging applications in industry and medicine. Here, we introduce Droplet Array Microfluidic Enzyme Kinetics (DA-MEK), a high-throughput enzyme screening platform […]

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Continued developments in X-ray speed reading: fast, low noise readout for next-generation wide-field imagers

Posted by dbos July 23, 2024Stanford

Kavli Affiliate: Sven Herrmann | First 5 Authors: Sven Herrmann, Peter Orel, Tanmoy Chattopadhyay, Glenn Morris, Gregory Prigozhin | Summary: Future strategic X-ray astronomy missions will require unprecedentedly sensitive wide-field imagers providing high frame rates, low readout noise and excellent soft energy response. To meet these needs, our team is employing a multi-pronged approach to […]

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Continued developments in X-ray speed reading: fast, low noise readout for next-generation wide-field imagers

Posted by dbos July 23, 2024August 5, 2024MIT

Kavli Affiliate: Marshall W. Bautz | First 5 Authors: Sven Herrmann, Peter Orel, Tanmoy Chattopadhyay, Glenn Morris, Gregory Prigozhin | Summary: Future strategic X-ray astronomy missions will require unprecedentedly sensitive wide-field imagers providing high frame rates, low readout noise and excellent soft energy response. To meet these needs, our team is employing a multi-pronged approach […]

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X-ray speed reading with the MCRC: prototype success and next generation upgrades

Posted by dbos July 23, 2024MIT

Kavli Affiliate: Richard Foster | First 5 Authors: Peter Orel, Abigail Y. Pan, Sven Herrmann, Tanmoy Chattopadhyay, Glenn Morris | Summary: The Advanced X-ray Imaging Satellite (AXIS) is a NASA probe class mission concept designed to deliver arcsecond resolution with an effective area ten times that of Chandra (at launch). The AXIS focal plane features […]

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The XOC X-ray Beamline: Probing Colder, Quieter, and Softer

Posted by dbos July 23, 2024August 5, 2024Stanford

Kavli Affiliate: Sven C. Herrmann | First 5 Authors: Haley R. Stueber, Tanmoy Chattopadhyay, Sven C. Herrmann, Peter Orel, Tsion Gebre | Summary: Future strategic X-ray satellite telescopes, such as the probe-class Advanced X-ray Imaging Satellite (AXIS), will require excellent soft energy response in their imaging detectors to enable maximum discovery potential. In order to […]

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Demonstrating sub-electron noise performance in Single electron Sensitive Readout (SiSeRO) devices

Posted by dbos July 23, 2024Stanford

Kavli Affiliate: Daniel R. Wilkins | First 5 Authors: Tanmoy Chattopadhyay, Sven Herrmann, Peter Orel, Kevan Donlon, Steven W. Allen | Summary: Single electron Sensitive Read Out (SiSeRO) is a novel on-chip charge detection technology that can, in principle, provide significantly greater responsivity and improved noise performance than traditional charge coupled device (CCD) readout circuitry. […]

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Demonstrating sub-electron noise performance in Single electron Sensitive Readout (SiSeRO) devices

Posted by dbos July 23, 2024August 5, 2024MIT

Kavli Affiliate: Gregory Prigozhin | First 5 Authors: Tanmoy Chattopadhyay, Sven Herrmann, Peter Orel, Kevan Donlon, Steven W. Allen | Summary: Single electron Sensitive Read Out (SiSeRO) is a novel on-chip charge detection technology that can, in principle, provide significantly greater responsivity and improved noise performance than traditional charge coupled device (CCD) readout circuitry. The […]

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Stimulation of locus coeruleus inputs to the frontal cortex in mice induces cell type-specific expression of the Apoe gene

Posted by dbos July 23, 2024August 5, 2024Hopkins

Kavli Affiliate: Keri Martinowich | Authors: Genevieve E Craig, Lizbeth Ramos, Samuel R Essig, Nicholas J Eagles, Andrew E Jaffe, Keri Martinowich and Henry L Hallock | Summary: Deficits in attention are common across a range of neuropsychiatric disorders. A multitude of brain regions, including the frontal cortex (FC) and locus coeruleus (LC), have been […]

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