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METHOD:PUBLISH
X-WR-CALNAME:INPA
X-ORIGINAL-URL:https://inpa.lbl.gov
X-WR-CALDESC:Events for INPA
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X-Robots-Tag:noindex
X-PUBLISHED-TTL:PT1H
BEGIN:VTIMEZONE
TZID:America/Los_Angeles
BEGIN:DAYLIGHT
TZOFFSETFROM:-0800
TZOFFSETTO:-0700
TZNAME:PDT
DTSTART:20190310T100000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0700
TZOFFSETTO:-0800
TZNAME:PST
DTSTART:20191103T090000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20191122T120000
DTEND;TZID=America/Los_Angeles:20191122T130000
DTSTAMP:20260404T004932
CREATED:20191118T211507Z
LAST-MODIFIED:20191118T211530Z
UID:692-1574424000-1574427600@inpa.lbl.gov
SUMMARY:Speaker: Chirag Modi - University of California\, Berkeley
DESCRIPTION:Title: Reconstruction of Cosmological Fields in Forward Model Framework – Galaxy Clustering and Intensity Mapping \nAbstract:\nIn this talk\, I will outline the forward model approach to reconstruct cosmological fields in a Bayesian framework. I will focus on two examples – galaxy clustering and neutral hydrogen intensity mapping. \nIn galaxy clustering example\, I will use the observations of galaxy surveys to reconstruct the initial Lagrangian field. \nHere\, we develop a novel framework with neural networks to forward model halo masses and positions and demonstrate that our method outperforms standard reconstruction in both real and redshift space.  \nThis reconstructed initial field has enhanced signal for baryon acoustic oscillations and can enhance science returns for surveys like DESI.  \nFor neutral hydrogen surveys\, we lose over 50% of the modes at high redshifts due to foregrounds and it severely hampers their feasibility for cosmological analysis. \nWith a novel bias framework for the forward model\, I will show that we are able to reconstruct over 90% of these modes and this recovers cross-correlations with photo-z surveys like LSST and tracers like CMB lensing. Lastly\, I will briefly touch upon assumptions made in this reconstruction framework regarding noise models and likelihood. I will discuss preliminary ways to improve upon them using deep learning.
URL:https://inpa.lbl.gov/event/speaker-chirag-modi-university-of-california-berkeley/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20191108T120000
DTEND;TZID=America/Los_Angeles:20191108T130000
DTSTAMP:20260404T004932
CREATED:20191008T011954Z
LAST-MODIFIED:20191008T012326Z
UID:668-1573214400-1573218000@inpa.lbl.gov
SUMMARY:Speaker: Solène Chabanier - IRFU\, CEA\, Université Paris-Saclay
DESCRIPTION:The title and abstract are forthcoming.
URL:https://inpa.lbl.gov/event/speaker-solene-chabanier-irfu-cea-universite-paris-saclay/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20191025T120000
DTEND;TZID=America/Los_Angeles:20191025T130000
DTSTAMP:20260404T004932
CREATED:20191008T011714Z
LAST-MODIFIED:20191008T012522Z
UID:661-1572004800-1572008400@inpa.lbl.gov
SUMMARY:Speaker: Katherine Rawlins - University of Alaska at Anchorage
DESCRIPTION:The title and abstract are forthcoming.
URL:https://inpa.lbl.gov/event/speaker-katherine-rawlins-university-of-alaska-at-anchorage/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20191011T120000
DTEND;TZID=America/Los_Angeles:20191011T130000
DTSTAMP:20260404T004932
CREATED:20191008T010627Z
LAST-MODIFIED:20191008T011146Z
UID:656-1570795200-1570798800@inpa.lbl.gov
SUMMARY:Speaker: Mattia Beretta - Development & Application of Scintillation Detectors for Rare Events Searches
DESCRIPTION:
URL:https://inpa.lbl.gov/event/speaker-mattia-beretta-milano-bicocca/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20191004T120000
DTEND;TZID=America/Los_Angeles:20191004T130000
DTSTAMP:20260404T004932
CREATED:20191004T174245Z
LAST-MODIFIED:20191004T174245Z
UID:650-1570190400-1570194000@inpa.lbl.gov
SUMMARY:Speaker: Daniel Whiteson - What has the Machine Learned?
DESCRIPTION:
URL:https://inpa.lbl.gov/event/speaker-daniel-whiteson-what-has-the-machine-learned/
LOCATION:INPA Common Room\, 50-5026
ORGANIZER;CN="Benjamin Nachman":MAILTO:bpnachman@lbl.gov
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20190712T120000
DTEND;TZID=America/Los_Angeles:20190712T130000
DTSTAMP:20260404T004932
CREATED:20190514T223322Z
LAST-MODIFIED:20190514T223322Z
UID:625-1562932800-1562936400@inpa.lbl.gov
SUMMARY:Will Thompson - COSINE-100 (Yale)
DESCRIPTION:TBA
URL:https://inpa.lbl.gov/event/will-thompson-cosine-100-yale/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20190628T120000
DTEND;TZID=America/Los_Angeles:20190628T130000
DTSTAMP:20260404T004932
CREATED:20190418T214528Z
LAST-MODIFIED:20190418T214528Z
UID:610-1561723200-1561726800@inpa.lbl.gov
SUMMARY:Adam Bernstein (LLNL) - The Watchman Experiment
DESCRIPTION:TBA
URL:https://inpa.lbl.gov/event/adam-bernstein-llnl-the-watchman-experiment/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20190524T120000
DTEND;TZID=America/Los_Angeles:20190524T130000
DTSTAMP:20260404T004932
CREATED:20190228T232835Z
LAST-MODIFIED:20190228T233043Z
UID:558-1558699200-1558702800@inpa.lbl.gov
SUMMARY:Vid Irsic (UW) - Lyman-alpha forest
DESCRIPTION:TBA
URL:https://inpa.lbl.gov/event/vid-irsic-uw-lyman-alpha-forest/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20190517T120000
DTEND;TZID=America/Los_Angeles:20190517T130000
DTSTAMP:20260404T004932
CREATED:20190118T194658Z
LAST-MODIFIED:20190515T170410Z
UID:508-1558094400-1558098000@inpa.lbl.gov
SUMMARY:Ben Land (UCB) - Solar neutrinos with SNO\, SNO+\, and Beyond
DESCRIPTION:This seminar gives a brief historical introduction to solar neutrino detection\, and motivates the use of solar neutrinos as a tool to probe physics beyond the standard model. An analysis of SNO data constraining the lifetime of neutrino decay is presented\, along with solar neutrino results from SNO+ water phase. Additionally\, R&D for simultaneous detection of Cherenkov and scintillation light in future solar neutrino experiments is discussed\, with a first look at single photon detection characteristics of LAPPDs.
URL:https://inpa.lbl.gov/event/ben-land-ucb/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20190510T120000
DTEND;TZID=America/Los_Angeles:20190510T130000
DTSTAMP:20260404T004932
CREATED:20190131T215618Z
LAST-MODIFIED:20190506T210935Z
UID:526-1557489600-1557493200@inpa.lbl.gov
SUMMARY:NO INPA SEMINAR MTG
DESCRIPTION:
URL:https://inpa.lbl.gov/event/anna-ijjas-harvard-cfa-2/
LOCATION:INPA Common Room\, 50-5026
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20190503T120000
DTEND;TZID=America/Los_Angeles:20190503T130000
DTSTAMP:20260404T004932
CREATED:20190118T194438Z
LAST-MODIFIED:20190430T223402Z
UID:506-1556884800-1556888400@inpa.lbl.gov
SUMMARY:Maria Simanovskaia (UCB) - Searching for Dark Matter Axions with HAYSTAC
DESCRIPTION:Continuing on the topic of axion searches from last week\, this seminar will highlight one experiment\, HAYSTAC\, which looks for an axion-induced power excess spectrally coincident with the resonance of a microwave cavity immersed in a strong magnetic field. This is the first such experiment to incorporate a dilution refrigerator and Josephson parametric amplifier and thereby achieve near-quantum-limited noise performance. Results will be discussed\, as well as planned upgrades and research and development work for the future.
URL:https://inpa.lbl.gov/event/maria-simanovskaia-ucb/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20190426T120000
DTEND;TZID=America/Los_Angeles:20190426T130000
DTSTAMP:20260404T004932
CREATED:20190118T194151Z
LAST-MODIFIED:20190424T201308Z
UID:504-1556280000-1556283600@inpa.lbl.gov
SUMMARY:Karl van Bibber (UCB) - A Primer on the Axion
DESCRIPTION:This is the first of a two-part series on the axion and the current experimental campaign to find it. This first seminar will focus on the history and motivation of the axion\, rooted in the Strong-CP problem\, i.e. the absence of the neutron electric dipole moment\, some phenomenology\, and an overview of experimental avenues to detect the axion. In the second part next week\, by Maria Simanovskaia\, one particular experiment\, HAYSTAC will be presented in detail\, which searches for the axion as the dark matter of the universe.
URL:https://inpa.lbl.gov/event/karl-van-bibber-ucb/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20190419T120000
DTEND;TZID=America/Los_Angeles:20190419T130000
DTSTAMP:20260404T004932
CREATED:20190309T001014Z
LAST-MODIFIED:20190417T153815Z
UID:570-1555675200-1555678800@inpa.lbl.gov
SUMMARY:NO INPA SEMINAR MTG
DESCRIPTION:
URL:https://inpa.lbl.gov/event/adam-bernstein-llnl-2/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20190412T120000
DTEND;TZID=America/Los_Angeles:20190412T130000
DTSTAMP:20260404T004932
CREATED:20190409T225801Z
LAST-MODIFIED:20190417T151122Z
UID:602-1555070400-1555074000@inpa.lbl.gov
SUMMARY:NO INPA SEMINAR MTG
DESCRIPTION:
URL:https://inpa.lbl.gov/event/no-inpa-seminar-mtg-scheduled/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20190408T103000
DTEND;TZID=America/Los_Angeles:20190408T113000
DTSTAMP:20260404T004932
CREATED:20190401T170905Z
LAST-MODIFIED:20190401T223331Z
UID:594-1554719400-1554723000@inpa.lbl.gov
SUMMARY:SPECIAL - Rajesh Sankaran - (ANL) - Waggle and Array of Things
DESCRIPTION:The Waggle Platform is a research project at Argonne National Laboratory to\ndesign\, develop\, and deploy a novel wireless sensor platform with advanced edge\ncomputing capabilities to enable a new breed of sensor-driven environmental\nscience and smart city research. The software and hardware designs from the\nWaggle project are used by the NSF funded Array Of Things\, which is building\na smart city and open data with urban sensors in Chicago. The innovative\narchitecture leverages emerging technology in low-power processors\, sensors\,\nand cloud computing to build powerful and reliable sensor nodes that can\nactively analyze and respond to data. Cloud computing provides elastic resources\nfor storing and computing on data. Waggle is designed from the ground up with\nsecurity\, privacy\, extensibility\, and survivability as key design points. The\nWaggle reference platforms and software are launching points. All of the\nsoftware is Open Source\, and the software is modular\, so researchers can add\ntheir own sensors\, computing pipelines\, and data analysis. The talk will discuss\nthe various technical aspects of the Waggle platform and the Array of Things\nurban deployment.
URL:https://inpa.lbl.gov/event/special-rajesh-sankaran-argonne-national-lab-waggle-and-array-of-things/
LOCATION:50-Auditorium
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20190405T120000
DTEND;TZID=America/Los_Angeles:20190405T130000
DTSTAMP:20260404T004932
CREATED:20190118T192400Z
LAST-MODIFIED:20190402T232332Z
UID:500-1554465600-1554469200@inpa.lbl.gov
SUMMARY:Giovanni Benato (UCB\, LBL) - Waiting for neutrinoless double beta decay with cryogenic calorimeters
DESCRIPTION:Neutrinoless double beta decay is the matter-creating process that is most accessible with the current technology.\nIts discovery would demonstrate the non-conservation of lepton number and that neutrinos have a Majorana mass component\, and indicate a possible solution for the baryon asymmetry of the universe.\nIn this seminar\, I will review the current status of the search for neutrinoless double beta decay\,\ndiscussing the recent developments of models for the calculation of nuclear matrix elements\,\nand the various possible mechanisms contributing to the process.\nIn addition\, I will report on the current status of the CUORE experiment for the search of neutrinoless double beta decay with cryogenic calorimeters\, and on the plans for its upgrade\, CUPID.
URL:https://inpa.lbl.gov/event/giovanni-benato-ucb-lbl-2/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20190329T120000
DTEND;TZID=America/Los_Angeles:20190329T130000
DTSTAMP:20260404T004932
CREATED:20190118T193206Z
LAST-MODIFIED:20190326T181647Z
UID:502-1553860800-1553864400@inpa.lbl.gov
SUMMARY:Morgan Askins (UCB) - Search for invisible nucleon decay in the SNO+ detector
DESCRIPTION:Many Grand Unified Theories predict processes that would allow baryons to decay to leptons\, violating baryon number conservation. The observation of baryon number violation in nucleon decay would be a revelation as well as being pivotal in understanding the apparent asymmetry between baryons and anti-baryons in the universe. This is manifest in some theories primarily through the decay of nucleons to three chargeless leptons (e.g. n to 3 neutrino)\, which can only be observed through the resulting nuclear deexcitation gamma. This “invisible” nucleon decay could be observable in water through the deexcitation of the resulting oxygen-15 nucleus which emits a 6.2 MeV gamma and requires that backgrounds at these energies\, in a large detector\, to be extremely low. Presented here are the first results from the SNO+ light water phase which consists of nearly 120 days of live data taking. A blind analysis was performed using a Poisson counting method and a maximum likelihood method independently to obtain the results.
URL:https://inpa.lbl.gov/event/morgan-askins-ucb/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20190322T120000
DTEND;TZID=America/Los_Angeles:20190322T130000
DTSTAMP:20260404T004932
CREATED:20190305T175138Z
LAST-MODIFIED:20190311T222024Z
UID:565-1553256000-1553259600@inpa.lbl.gov
SUMMARY:Aaron Manalaysay (UC Davis) - 178 nm: The magic of liquid xenon and the search for dark matter
DESCRIPTION:The introduction of liquid-xenon (LXe) to the field of dark-matter direct detection caused a paradigm shift in this search. Primarily focused on the search for the Weakly Interacting Massive Particle\, LXe detectors have improved our sensitivity to these dark-matter candidates by a factor of 10\,000 since their introduction roughly ten years ago\, compared to the factor of 50 sensitivity improvement that the field had covered in the twenty years before that. The rapid pace at which LXe detectors have pushed the field is due in part to their ability to scale to arbitrarily large size\, thereby drastically reducing the rates of background signals in these rare-event searches. Though these detectors have seen tremendous successes\, each result has been accompanied by its own set of challenges to be overcome\, which will also be true for the next generation experiments. I will describe the most recent such U.S.-based experiment\, LUX\, and highlight the key innovative analyses that led to its impressive results. I will extend the discussion to cover LUX’s upcoming LBL-led successor\, LZ\, which will be sensitive to WIMP-nucleus interactions as rare as roughly 0.5 events/kg/millennium. Time permitting\, I will expand the view by discussing the ways in which LXe is a powerful tool for probing non-WIMP dark-matter candidates.
URL:https://inpa.lbl.gov/event/aaron-manalaysay-uc-davis/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20190315T120000
DTEND;TZID=America/Los_Angeles:20190315T130000
DTSTAMP:20260404T004932
CREATED:20190313T211459Z
LAST-MODIFIED:20190417T151143Z
UID:578-1552651200-1552654800@inpa.lbl.gov
SUMMARY:NO INPA SEMINAR MTG
DESCRIPTION:
URL:https://inpa.lbl.gov/event/no-inpa-seminar/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20190308T120000
DTEND;TZID=America/Los_Angeles:20190308T130000
DTSTAMP:20260404T004932
CREATED:20190118T190951Z
LAST-MODIFIED:20190417T151202Z
UID:498-1552046400-1552050000@inpa.lbl.gov
SUMMARY:NO INPA SEMINAR MTG
DESCRIPTION:
URL:https://inpa.lbl.gov/event/adam-bernstein-llnl/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20190301T120000
DTEND;TZID=America/Los_Angeles:20190301T130000
DTSTAMP:20260404T004932
CREATED:20190222T173049Z
LAST-MODIFIED:20190227T000936Z
UID:548-1551441600-1551445200@inpa.lbl.gov
SUMMARY:Dr. Quentin Riffard (LBL) - Direct detection of Dark Matter: from LUX to LZ
DESCRIPTION:Liquid xenon two-phase time projection chamber (TPC) is one of the most promising technologies for WIMP dark matter direct detection. By using this technology\, the LUX\, XENON1T\, and PANDAX-II collaborations established the most stringent limits on WIMP-nucleus cross section above 10 GeV. For WIMP searches\, the expected signal is composed of nuclear recoils (NR)\, while our background is composed by both electron recoils (ER) and NR. The limits on the WIMP-nucleus cross section are extracted using a Profile Likelihood Ratio (PLR). The usage of the PLR requires a precise knowledge of signal and background models. In the first section\, I will focus on the improvement of the detector response modeling and the re-analysis of the background model for LUX Run4 analyses. The LUX Run4 represents a challenge for the modeling of the detector response as several experimental parameters vary as a function of time. Then I will present a new detector response model based on the NEST yield model to consider those variations. This new model has been tuned on Run4 calibration data across many electric fields. After the decommissioning of the LUX experiment\, some parts of the detector have been re-assayed to reevaluate the activity of the contaminants. I’m developing a new background model based on a Monte-Carlo simulation of the detector and those new measurements. Once achieved\, this background model will be used in future analyses. I used the new detector response model to test the impact of the electric field and the light collection efficiency on detector sensitivity for several dark matter models. \nAmong few collaborations\, the LUX-ZEPLIN (LZ) is currently building one of the next generation of dark matter detector. The NR response detector calibration is a fundamental aspect of dark matter searches. I am involved in development of a photo-neutron source for the low energy NR calibration of the detector. By using a Monte-Carlo simulation\, we determined the expected event rate. Moreover\, by using photo neutron simulations\, I also identify a plausible low energy calibration source. After Xe neutron capture\, we have the emission of very high energy gammas ~ 9 MeV and a ~300 eV NR. In some case only the NR is visible as the gamma can escape the LXe without depositing any energy. By using the veto to tag this neutron capture reaction\, I show that we have a new possible low energy NR internal calibration source.
URL:https://inpa.lbl.gov/event/dr-quentin-riffard-uc-berkeley-direct-detection-of-dark-matter-from-lux-to-lz/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20190222T120000
DTEND;TZID=America/Los_Angeles:20190222T130000
DTSTAMP:20260404T004932
CREATED:20181107T194732Z
LAST-MODIFIED:20190221T172729Z
UID:477-1550836800-1550840400@inpa.lbl.gov
SUMMARY:Jia Liu (Princeton) - Nonlinear cosmology with massive neutrinos
DESCRIPTION:The non-zero mass of neutrinos suppresses the growth of cosmic structure on small scales. Since the level of suppression depends on the masses of the three active neutrino species\, the evolution of large-scale structure is a promising tool to constrain the total mass of neutrinos and possibly shed light on the mass hierarchy. I will discuss recent progress and future prospects to constrain the neutrino mass sum with cosmology\, with a focus on the nonlinear regime.
URL:https://inpa.lbl.gov/event/jia-liu-princeton/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20190215T120000
DTEND;TZID=America/Los_Angeles:20190215T130000
DTSTAMP:20260404T004932
CREATED:20181107T194600Z
LAST-MODIFIED:20190206T164328Z
UID:475-1550232000-1550235600@inpa.lbl.gov
SUMMARY:Alexander Fieguth (Stanford) - Recent results of the Xenon-1t dark matter experiment
DESCRIPTION:Beyond the Standard Model of particle physics there exists a form of matter\, which seems to be dark in all interaction channels but in its gravitational influence. The nature of this major constituent of the universe is still not understood. The assumption that it is made up of particles which can possibly leave a trace in any detection channel is an established concept since decades. \nWeakly Interacting Massive Particles (WIMPs) are one of the promising candidates for dark matter constituents. The hunt for a direct detection of a WIMP scattering off a target nucleus on earth is ongoing and pursued with larger efforts than ever before. Among different experiments\, the dual-phase xenon time projection chambers are the most sensitive detectors for scatterings between WIMPs above a few GeV/c^2 and normal matter. The XENON1T experiment located at LNGS is such a detector. Using an exposure of one (tonne x yr) a null-result was obtained and this way the parameter space was probed down to a minimum of 4.1 x 10^(-47) cm^2 for a 30 GeV/c^2 WIMP at 90% C.L. A crucial aspect behind its sensitivity is the mitigation and understanding of background sources mimicking a WIMP signal. Notably\, the rate of electronic recoils in the detector (82^(+5)_(−3) (sys.) ± 3 (stat)) events/(tonne×yr×keV) is the lowest achieved in any dark matter detector. \nAn introduction to the general direct detection principle will be given in this talk. Furthermore\, the experimental picture of direct dark matter search will be introduced with a focus on the results from the XENON1T experiment. In addition\, an outlook on recent efforts to open up for scenarios beyond the vanilla dark matter search\, e.g. the interaction of WIMPS purely with pions within the nucleus\, will be included. Finally\, an insight into the possibilities a large liquid xenon low background detector offers for physics channels beyond the dark matter search will be given.
URL:https://inpa.lbl.gov/event/alexander-fieguth-stanford/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20190208T120000
DTEND;TZID=America/Los_Angeles:20190208T130000
DTSTAMP:20260404T004932
CREATED:20181107T194431Z
LAST-MODIFIED:20190205T180628Z
UID:473-1549627200-1549630800@inpa.lbl.gov
SUMMARY:Sinead Griffin (LBL) - Materials considerations for New Dark Matter Detectors
DESCRIPTION:New discoveries in quantum information science and in dark matter detection rely on finding more sensitive detectors than those in state-of-the-art experiments. Traditional detector technologies\, based on nuclear and electron scattering\, have a lower bound on their sensitivity depending on the target’s mass and bandgap. We investigate two classes of new low-threshold detector target materials — Dirac electrons and optical phonons — using first-principles calculations. We discuss how the dark matter/target interaction can be optimized using chemical and physical engineering\, and present the target reach for these new dark matter detection proposals.
URL:https://inpa.lbl.gov/event/sinead-griffin-lbl/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20190201T120000
DTEND;TZID=America/Los_Angeles:20190201T130000
DTSTAMP:20260404T004932
CREATED:20181107T194304Z
LAST-MODIFIED:20190125T184855Z
UID:471-1549022400-1549026000@inpa.lbl.gov
SUMMARY:Hillary Child - Nonlinear Structure Formation at Two Scales: from Bispectrum Baryon Acoustic Oscillations to Evolution of Halo Profiles
DESCRIPTION:The “cosmic web” of dark matter halos forms via the collapse of post-inflation density fluctuations. While linear perturbation theory describes this process well at large scales and low densities\, it fails at small scales and high densities. I explore two facets of nonlinear structure formation that constrain cosmology: at mildly nonlinear scales\, measuring the baryon acoustic oscillation (BAO) distance scale in the bispectrum\, and at deeply nonlinear scales\, tracking the evolution of simulated dark matter halo profiles.\n\nAt mildly nonlinear scales\, the BAO distance scale constrains the expansion history of the universe and dark energy. The BAO feature has been detected in both the three-point correlation function and the bispectrum\, but challenges remain in fully exploiting three-point data. I present a strategy to select triangle configurations that maximize the amplitude of the BAO signal in the bispectrum. A relatively small set of bispectrum measurements can improve constraints on the BAO length scale over power spectrum measurements alone.\n\nI next turn to the internal structure of dark matter halos\, whose formation is highly nonlinear. The spherically-averaged density of a halo is well described by the Navarro-Frenk-White (NFW) profile\, a function of two parameters: concentration\, which describes the density of the central region of the halo\, and halo mass. These two parameters are correlated\, and the resulting concentration-mass (c-M) relation is sensitive to cosmological parameters. I present a robust measurement of the c-M relation from the largest ever sample of simulated halos (~30 million) and track the evolution of individual halos to connect halo formation time and concentration.
URL:https://inpa.lbl.gov/event/giovanni-benato-ucb-lbl/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20190130T120000
DTEND;TZID=America/Los_Angeles:20190130T130000
DTSTAMP:20260404T004932
CREATED:20190118T190235Z
LAST-MODIFIED:20190130T174941Z
UID:496-1548849600-1548853200@inpa.lbl.gov
SUMMARY:SPECIAL - Brittany Kamai (CalTech) - Looking further back with LIGO
DESCRIPTION:Gravitational wave detectors require constant innovation in detector technology to meet the growing needs of the astrophysics community. With improved sensitivity\, we can move beyond the measurements in the local universe and perform precision tests of cosmology. I will discuss our efforts to reduce the amount of low frequency noise within the LIGO detectors\, which has a direct impact on our ability to measure heavier mass black hole mergers further out into the universe. I will focus on a proposed major upgrade to the LIGO detectors that will use silicon optics cooled to cryogenic temperatures. Additionally\, I will discuss ideas for a passive seismic isolation system that uses advances in seismic cloaking technology. These improvements will extend distance measurements on gravitational wave mergers from the local universe out to much higher redshifts.
URL:https://inpa.lbl.gov/event/special-brittany-kamai-caltech/
LOCATION:INPA Common Room\, 50-5026
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20190125T120000
DTEND;TZID=America/Los_Angeles:20190125T130000
DTSTAMP:20260404T004932
CREATED:20181003T214506Z
LAST-MODIFIED:20190417T151057Z
UID:450-1548417600-1548421200@inpa.lbl.gov
SUMMARY:NO INPA SEMINAR MTG
DESCRIPTION:
URL:https://inpa.lbl.gov/event/anna-ijjas-harvard-cfa/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20190118T120000
DTEND;TZID=America/Los_Angeles:20190118T130000
DTSTAMP:20260404T004932
CREATED:20181003T214412Z
LAST-MODIFIED:20190116T211131Z
UID:448-1547812800-1547816400@inpa.lbl.gov
SUMMARY:Silvia Scorza (Snolab\, Sudbury) - Updates from SNOLAB
DESCRIPTION:Astroparticle physics experiments searching for rare events\, such as neutrinoless double beta decay and dark matter particles interactions\, have to be shielded from background radiation that would interact and hide the physics of interest\, and have to exhibit a radioactive background as low as possible. Therefore\, underground site are preferred. Being protected from cosmic rays\, the underground environment provides the conditions necessary for experiments dealing with such rare or exotic interactions. \nSNOLAB is one such facility\, based at a depth of 2km in the Vale Creighton mine near Sudbury\, Ontario. The lab hosts a number of neutrino and dark matter experiments as well as new biology and genomic experiments making use of the unique facility.
URL:https://inpa.lbl.gov/event/silvia-scorza-snolab-sudbury/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20190111T120000
DTEND;TZID=America/Los_Angeles:20190111T130000
DTSTAMP:20260404T004932
CREATED:20181003T214303Z
LAST-MODIFIED:20181003T214303Z
UID:446-1547208000-1547211600@inpa.lbl.gov
SUMMARY:Aleksandar Cikota (LBNL)
DESCRIPTION:TBA
URL:https://inpa.lbl.gov/event/aleksandar-cikota-lbnl/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20190104T120000
DTEND;TZID=America/Los_Angeles:20190104T130000
DTSTAMP:20260404T004932
CREATED:20181207T193104Z
LAST-MODIFIED:20181207T193104Z
UID:486-1546603200-1546606800@inpa.lbl.gov
SUMMARY:Matt Shaw (JPL) - Silicon nanowire single photon detectors
DESCRIPTION:TBA
URL:https://inpa.lbl.gov/event/matt-shaw-jpl-silicon-nanowire-single-photon-detectors/
LOCATION:INPA Common Room\, 50-5026
END:VEVENT
END:VCALENDAR