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X-WR-CALDESC:Events for INPA
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TZNAME:PDT
DTSTART:20180311T100000
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DTSTART:20181104T090000
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BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20190308T120000
DTEND;TZID=America/Los_Angeles:20190308T130000
DTSTAMP:20260404T073000
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:20260404T073000
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:20260404T073000
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:20260404T073000
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:20260404T073000
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:20260404T073000
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:20260404T073000
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:20260404T073000
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:20260404T073000
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:20260404T073000
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:20260404T073000
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
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20190104T120000
DTEND;TZID=America/Los_Angeles:20190104T130000
DTSTAMP:20260404T073000
CREATED:20181017T180240Z
LAST-MODIFIED:20181017T180240Z
UID:463-1546603200-1546606800@inpa.lbl.gov
SUMMARY:Holiday
DESCRIPTION:
URL:https://inpa.lbl.gov/event/holiday-3/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20181228T120000
DTEND;TZID=America/Los_Angeles:20181228T130000
DTSTAMP:20260404T073000
CREATED:20181017T180159Z
LAST-MODIFIED:20181017T180159Z
UID:461-1545998400-1546002000@inpa.lbl.gov
SUMMARY:Holiday - Shutdown
DESCRIPTION:
URL:https://inpa.lbl.gov/event/holiday-shutdown/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20181221T120000
DTEND;TZID=America/Los_Angeles:20181221T130000
DTSTAMP:20260404T073000
CREATED:20181017T180340Z
LAST-MODIFIED:20181017T180340Z
UID:465-1545393600-1545397200@inpa.lbl.gov
SUMMARY:Holiday - Shutdown
DESCRIPTION:
URL:https://inpa.lbl.gov/event/holiday-shutdown-2/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20181214T120000
DTEND;TZID=America/Los_Angeles:20181214T130000
DTSTAMP:20260404T073000
CREATED:20181017T175956Z
LAST-MODIFIED:20181207T192951Z
UID:457-1544788800-1544792400@inpa.lbl.gov
SUMMARY:Kimmy Wu (KICP Chicago) - Delensing\, Neural Networks\, the H_0 problem — a perspective from the CMB
DESCRIPTION:The cosmic microwave background (CMB) contains a wealth of information about the early and the late universe. In this talk\, I will focus on the search of primordial gravitational waves. Specifically\, I will talk about “delensing” — constraining the lensing component in the CMB B-mode maps that we might reduce the soon-to-be major uncertainty of the r measurement in the BICEP/Keck experiments. For next-generation CMB experiments\, we will need higher signal-to-noise estimates of the lensing potential beyond the commonly-used quadratic estimator approach today for delensing. I will discuss a method to extract the lensing field using a convolutional neural network (1810.01483)\, that approaches maximum-likelihood lensing estimates in a broad range of angular scales. If I have time\, I will discuss the “H_0 problem”\, where the inferred expansion rate of the universe from the CMB (and a couple other probes) are significantly lower than direct measurements. I will look at it from the sound horizon perspective (1811.00537) and show how data from the South Pole telescope can probe potential new physics.
URL:https://inpa.lbl.gov/event/kimmy-wu-kicp-chicago/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20181207T120000
DTEND;TZID=America/Los_Angeles:20181207T130000
DTSTAMP:20260404T073000
CREATED:20180917T155453Z
LAST-MODIFIED:20181207T191859Z
UID:438-1544184000-1544187600@inpa.lbl.gov
SUMMARY:Carlos García García (IFF\, Madrid) - Theoretical priors for quintessence
DESCRIPTION:Dark energy is a key unsolved problem. An enormous number of theories try to explain the accelerated expansion of the universe\, ranging from the simplicity of a cosmological constant to the inclusion of new gravitational fields that affect space-time dynamics. We need clever methods to test the landscape of theories to make the most of next-generation experiments. I will present a novel framework to study dark energy and apply it to general quintessence models\, reducing their functional freedom. Expanding the dark energy density as a truncated polynomial series\, we are able to reproduce the observables with less than 1% error\, with just 2 parameters. This economic yet precise description will allow dark energy to be constrained with next generation instruments in a general and efficient way.
URL:https://inpa.lbl.gov/event/carlos-garcia-garcia-iff-madrid/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20181130T120000
DTEND;TZID=America/Los_Angeles:20181130T130000
DTSTAMP:20260404T073000
CREATED:20180917T155355Z
LAST-MODIFIED:20181128T223200Z
UID:436-1543579200-1543582800@inpa.lbl.gov
SUMMARY:Simon Foreman (CITA\, Toronto) - Gravitational lensing of line intensity maps
DESCRIPTION:Gravitational lensing of the cosmic microwave background (CMB) has emerged as a powerful cosmological probe\, made possible by the development and characterization of nearly-optimal estimators for extracting the lensing signal from temperature and polarization maps. One can ask whether similar tools can be applied to upcoming “intensity maps” of emission lines at various wavelengths (e.g. 21cm). In this talk\, I will present recent work in this direction\, focusing in particular on the impact of nonlinear gravitational clustering on standard CMB lensing estimators when applied to intensity maps. I will show how these nonlinearities can provide a significant contaminant to lensing reconstruction\, but will also describe how this contamination can largely be mitigated by modifying the lensing estimator. Finally\, I will present estimates for the detectability of lensing in ongoing and future intensity mapping surveys\, and highlight related work on reconstructing large-angle information in galaxy surveys and CMB maps.
URL:https://inpa.lbl.gov/event/simon-foreman-cita-toronto/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
ORGANIZER;CN="Kawana Yancey":MAILTO:kyancey@lbl.gov
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20181123T120000
DTEND;TZID=America/Los_Angeles:20181123T130000
DTSTAMP:20260404T073000
CREATED:20181017T175717Z
LAST-MODIFIED:20181017T175717Z
UID:455-1542974400-1542978000@inpa.lbl.gov
SUMMARY:Holiday
DESCRIPTION:
URL:https://inpa.lbl.gov/event/holiday-2/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20181116T120000
DTEND;TZID=America/Los_Angeles:20181116T130000
DTSTAMP:20260404T073000
CREATED:20180917T155219Z
LAST-MODIFIED:20181107T194052Z
UID:434-1542369600-1542373200@inpa.lbl.gov
SUMMARY:Andrej Dvornik (UNLV) - KiDS and biases
DESCRIPTION:The current ongoing large imaging surveys are an excellent tool for studying the origin and evolution of the Universe and the galaxy – dark matter connection\, using the weak gravitational lensing as the main probe. Using the predicting power of the halo model formalism\, the weak gravitational lensing (together with other large scale probes) can be used to constrain the origin of the scale dependence of the galaxy bias – the relation between the galaxies and the dark matter distribution\, as well as studying the dependence of the formation time of galaxies on their halo masses – so called assembly bias. In this talk I will present the KiDS survey and way it can be used to shine a light on the different aspects of galaxy-halo connection.
URL:https://inpa.lbl.gov/event/andrej-dvornik-unlv/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20181109T120000
DTEND;TZID=America/Los_Angeles:20181109T130000
DTSTAMP:20260404T073000
CREATED:20180917T155113Z
LAST-MODIFIED:20181107T200037Z
UID:432-1541764800-1541768400@inpa.lbl.gov
SUMMARY:Douglas Finkbeiner (Harvard) - Making neural net classifiers more robust and explainable: Lessons from Adversarial AI
DESCRIPTION:As deep neural nets achieve ever greater successes\, efforts to break them and learn about their failure modes are also ramping up. Security experts and malicious actors are interested in weaknesses per se\, and we scientists are more interested in what we can learn about robustness to inputs somewhat different from training data. I will give examples of attacks and defenses\, and talk about a measure of credibility at inference time.
URL:https://inpa.lbl.gov/event/douglas-finkbeiner-harvard/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20181102T120000
DTEND;TZID=America/Los_Angeles:20181102T130000
DTSTAMP:20260404T073000
CREATED:20181003T214654Z
LAST-MODIFIED:20181003T222849Z
UID:452-1541160000-1541163600@inpa.lbl.gov
SUMMARY:Marco Raveri (UChicago)
DESCRIPTION:TBA
URL:https://inpa.lbl.gov/event/marco-raveri-uchicago/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20181005T120000
DTEND;TZID=America/Los_Angeles:20181005T130000
DTSTAMP:20260404T073000
CREATED:20180918T165541Z
LAST-MODIFIED:20181003T214034Z
UID:440-1538740800-1538744400@inpa.lbl.gov
SUMMARY:Arka Banerjee (Stanford) - Signatures of massive neutrinos on Large Scale Structure
DESCRIPTION:Neutrino oscillation experiments have shown that there are at least two massive neutrino eigenstates\, in a mass range that can produce observable signatures in current and future cosmological surveys. I will talk about the challenges and progress in correctly including the effects of massive neutrinos in N-body simulations of structure formation. Finally\, I will talk about how these simulations can be used to study novel effects in massive neutrino cosmology – in particular\, scale-dependent bias of nonlinear objects such as halos and voids on large scales.
URL:https://inpa.lbl.gov/event/arka-banerjee-stanford/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20180824T120000
DTEND;TZID=America/Los_Angeles:20180824T130000
DTSTAMP:20260404T073000
CREATED:20180809T170858Z
LAST-MODIFIED:20180809T170858Z
UID:423-1535112000-1535115600@inpa.lbl.gov
SUMMARY:Jyoti Joshi (BNL) - Recent Results from MicroBooNE Liquid Argon TPC
DESCRIPTION:MicroBooNE is a large (85-ton active mass) liquid argon time projection chamber (LArTPC) experiment operating near the surface at Fermilab in Batavia\, Illinois. The detector observes neutrino interactions from the on-axis Booster Neutrino Beam (BNB) at short distance (470 m)\, enabling an investigation of the MiniBooNE low-energy excess as well as neutrino-argon cross section measurements. Another key purpose of the experiment is to gain experience with the operation and calibration of large LArTPC detectors in preparation for the SBN (Short Baseline Neutrino) program at Fermilab and DUNE (the Deep Underground Neutrino Experiment). We discuss the principal physics goals of MicroBooNE and highlight aspects related to operating a large LArTPC near the surface. The MicroBooNE LArTPC calibration program and different neutrino event reconstruction techniques are discussed\, and recent results from the experiment are presented.
URL:https://inpa.lbl.gov/event/jyoti-joshi-bnl-recent-results-from-microboone-liquid-argon-tpc-2/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20180817T120000
DTEND;TZID=America/Los_Angeles:20180817T130000
DTSTAMP:20260404T073000
CREATED:20180809T170709Z
LAST-MODIFIED:20180815T154237Z
UID:420-1534507200-1534510800@inpa.lbl.gov
SUMMARY:Chris Benson (UCB) - Using MiniCLEAN and measurements of microphysical material properties in the vacuum ultraviolet regime to inform next-generation dark matter and neutrino detectors
DESCRIPTION:Single phase\, zero-field\, liquid noble gas scintillator detectors are a simple\, scalable and cost-effective approach for dark matter and neutrino detection. MiniCLEAN is a liquid argon dark matter detector located 6\,800 feet underground at SNOLAB in Canada. In addition to its role as a detector for dark matter searches\, MiniCLEAN also serves as a technology demonstrator for a scalable\, single-phase detector and is aimed at informing the design and sensitivity of monolithic\, large-scale\, next-generation dark matter and neutrino detectors. This presentation will provide an overview of the MiniCLEAN experiment and a summary of the author’s contributions to construction\, commissioning\, and analysis efforts. The results of a supporting wavelength shifting thin film R&D effort\, a technology important to several current and future dark matter and neutrino experiments\, will also be presented.
URL:https://inpa.lbl.gov/event/chris-benson-ucb-measurement-of-microphysical-material-properties-in-the-extreme-ultraviolet-regime-for-next-generation-neutrino-and-dark-matter-detectors/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20180720T120000
DTEND;TZID=America/Los_Angeles:20180720T130000
DTSTAMP:20260404T073000
CREATED:20180711T231927Z
LAST-MODIFIED:20180711T231927Z
UID:416-1532088000-1532091600@inpa.lbl.gov
SUMMARY:Jyoti Joshi (BNL) - Recent Results from MicroBooNE Liquid Argon TPC
DESCRIPTION:MicroBooNE is a large (85-ton active mass) liquid argon time projection chamber (LArTPC) experiment operating near the surface at Fermilab in Batavia\, Illinois. The detector observes neutrino interactions from the on-axis Booster Neutrino Beam (BNB) at short distance (470 m)\, enabling an investigation of the MiniBooNE low-energy excess as well as neutrino-argon cross section measurements. Another key purpose of the experiment is to gain experience with the operation and calibration of large LArTPC detectors in preparation for the SBN (Short Baseline Neutrino) program at Fermilab and DUNE (the Deep Underground Neutrino Experiment). We discuss the principal physics goals of MicroBooNE and highlight aspects related to operating a large LArTPC near the surface. The MicroBooNE LArTPC calibration program and different neutrino event reconstruction techniques are discussed\, and recent results from the experiment are presented.
URL:https://inpa.lbl.gov/event/jyoti-joshi-bnl-recent-results-from-microboone-liquid-argon-tpc/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20180621T120000
DTEND;TZID=America/Los_Angeles:20180621T130000
DTSTAMP:20260404T073000
CREATED:20180614T154745Z
LAST-MODIFIED:20180614T155145Z
UID:413-1529582400-1529586000@inpa.lbl.gov
SUMMARY:Ke-Jung (Ken) Chen (ASIAA) - The First Billion Years of the Universe - Rising Galaxies
DESCRIPTION:One of the paramount problems in modern astrophysics is to understand the end of the cosmic dark ages when the first stars\, supernovae\, black holes\, and galaxies transformed the simple early universe into a state of ever-increasing complexity. Modern cosmological simulations suggest that the hierarchical assembly of dark matter halos provided the gravitational wells that allowed the primordial gases to form stars and galaxies inside them. The first galaxies comprised of the first systems of stars gravitationally bound in dark matter halos are naturally recognized as the building blocks of early Universe. In this talk\, I will discuss the physical mechanics behind the first galaxy formation and present the predictions of their observational signatures which will be examined by the future observatories such as JWST and TMT.
URL:https://inpa.lbl.gov/event/ke-jung-ken-chen-asiaa-the-first-billion-years-of-the-universe-rising-galaxies/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20180525T080000
DTEND;TZID=America/Los_Angeles:20180525T170000
DTSTAMP:20260404T073000
CREATED:20180525T003827Z
LAST-MODIFIED:20180525T003838Z
UID:409-1527235200-1527267600@inpa.lbl.gov
SUMMARY:No INPA Seminar This Week
DESCRIPTION:
URL:https://inpa.lbl.gov/event/no-inpa-seminar-this-week/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20180518T120000
DTEND;TZID=America/Los_Angeles:20180518T130000
DTSTAMP:20260404T073000
CREATED:20180402T154429Z
LAST-MODIFIED:20180426T220952Z
UID:381-1526644800-1526648400@inpa.lbl.gov
SUMMARY:Alexey Drobizhev (UCB/LBNL)
DESCRIPTION:
URL:https://inpa.lbl.gov/event/alexey-drobizhev/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20180511T120000
DTEND;TZID=America/Los_Angeles:20180511T130000
DTSTAMP:20260404T073000
CREATED:20180426T215632Z
LAST-MODIFIED:20180430T171544Z
UID:400-1526040000-1526043600@inpa.lbl.gov
SUMMARY:Shirley Li (SLAC) - DUNE as the next-generation solar neutrino experiment
DESCRIPTION:
URL:https://inpa.lbl.gov/event/shirley-li-slac-dune-as-the-next-generation-solar-neutrino-experiment/
LOCATION:50A-5132- Sessler\, 50A-5132 Sessler Conference Room\, CA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20180427T120000
DTEND;TZID=America/Los_Angeles:20180427T130000
DTSTAMP:20260404T073000
CREATED:20180314T154654Z
LAST-MODIFIED:20180425T170724Z
UID:367-1524830400-1524834000@inpa.lbl.gov
SUMMARY:Dan Dwyer (LBNL) - Demonstration of a true 3D micro-power sensor for liquid argon time projection chambers
DESCRIPTION:Time projection chambers (TPCs) based on the ionization of cryogenic liquids are a prominent tool for neutrino oscillation\, neutrinoless double beta decay\, and dark matter experiments. Over the past two years I have pursued the development of a novel charge readout sensor providing true 3D imaging of particle interactions in large-scale liquid argon TPCs. The sensor must meet stringent requirements on noise (<600 electron)\, power (<100 microwatts per channel)\, and scalability (digital multiplexing of 100\,000 channels per square meter)\, all at cryogenic temperatures. Such a scalable 3D micro-power sensor would enable operation of liquid argon TPCs in high-occupancy environments\, such as the near detector site of the Deep Underground Neutrino Experiment (DUNE). I will present my recent mad dash to a successful demonstration of 3D micro-power imaging of particle tracks in liquid argon\, and discuss what worked and what didn’t work along the way. I will also discuss the potential impact on upcoming neutrino measurements.
URL:https://inpa.lbl.gov/event/dan-dwyer-lbnl-tba-dune-upgrade-tpc-readout/
END:VEVENT
END:VCALENDAR