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X-WR-CALDESC:Events for INPA
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DTSTART:20170312T100000
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DTSTART:20171105T090000
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DTSTART;TZID=America/Los_Angeles:20171103T120000
DTEND;TZID=America/Los_Angeles:20171103T130000
DTSTAMP:20260527T133029
CREATED:20171019T174547Z
LAST-MODIFIED:20171024T173800Z
UID:283-1509710400-1509714000@inpa.lbl.gov
SUMMARY:Noah Kurinsky (Stanford) - Pushing to Low Mass with SuperCDMS SNOLAB: New Developments in Ultra-Low Threshold Dark Matter Detectors
DESCRIPTION:In the last few years\, the dark matter field has bifurcated into experiments focused on wimp-scale dark matter with massive liquid noble detectors and experiments focused on so-called ‘hidden sectors’ dark matter\, pushing small detectors to much lower energy resolutions. Low-mass dark matter searches\, focusing on single eV-scale energy deposits\, are sensitive to different backgrounds than their higher-threshold counterparts\, including but not limited to infrared emissions from the experimental environment and low-rate cosmogenic contamination in the target materials. The traditional paradigm of 2-phase detectors used to discriminate between electronic and nuclear recoils is no longer effective\, both because of experimental limitations and kinematic constraints. The low-mass reach of SuperCDMS SNOLAB is based on the idea of moving from a phonon+charge readout to a charge-mediated phonon readout; introducing degeneracy between our separate detection channels to achieve lower thresholds. In this talk I will discuss the theory behind the CDMS-HV detector technology and present exciting results from prototype detectors run at test facilities in the CDMS collaboration. I will then discuss the science reach given these results\, and explore future directions with this technology.I will describe our development of a convolutional neural network (CNN) to learn to search for and characterize absorption lines in quasar spectra. Specifically\, the algorithm discovers and measures the redshift and Hydrogen column density of damped Lya systems (DLAs). These systems dominate the neutral hydrogen gas of the universe\, trace the interstellar medium of distant galaxies\, and offer cosmological constraints on the build up of gas and heavy elements across cosmic time. I will discuss the lessons learned employing CNN techniques on large spectral datasets and the prospects for future analysis.
URL:https://inpa.lbl.gov/event/noah-kurinsky-stanford/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
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DTSTART;TZID=America/Los_Angeles:20171110T120000
DTEND;TZID=America/Los_Angeles:20171110T130000
DTSTAMP:20260527T133029
CREATED:20171019T174749Z
LAST-MODIFIED:20171027T144234Z
UID:285-1510315200-1510318800@inpa.lbl.gov
SUMMARY:Katelin Schutz (UCB) - Excluding a thin dark matter disk in the Milky Way with Gaia DR1: Resurrecting the Dinosaurs
DESCRIPTION:If a component of the dark matter has dissipative interactions\, it could collapse to form a thin dark disk in our Galaxy coincident with the baryonic disk. It has been suggested that dark disks could explain a variety of observed phenomena\, including mass extinction events due to periodic comet impacts. Using the first data release from the Gaia space observatory\, I will present the results of a search for a dark disk via its effect on stellar kinematics in the Milky Way. I will discuss our strong new limits that disfavor the presence of a thin dark matter disk and present updated measurements on the total matter density in the solar neighborhood.
URL:https://inpa.lbl.gov/event/katelin-schutz-ucb/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
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DTSTART;TZID=America/Los_Angeles:20171124T080000
DTEND;TZID=America/Los_Angeles:20171124T170000
DTSTAMP:20260527T133029
CREATED:20171019T175040Z
LAST-MODIFIED:20171019T175040Z
UID:289-1511510400-1511542800@inpa.lbl.gov
SUMMARY:Holiday
DESCRIPTION:
URL:https://inpa.lbl.gov/event/holiday/
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