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BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20201120T100000
DTEND;TZID=America/Los_Angeles:20201120T110000
DTSTAMP:20260404T073039
CREATED:20201109T002353Z
LAST-MODIFIED:20201109T002353Z
UID:916-1605866400-1605870000@inpa.lbl.gov
SUMMARY:Special Double feature Virtual INPA seminar  | Anton Baleato Lizancos (Cambridge) and Utkarsh Giri (PITP)
DESCRIPTION:Speaker: Anton Baleato Lizancos (Cambridge) \nTitle: “Understanding biases to CMB lensing and delensing on the road to precision science” \nAbstract: For cosmologists\, CMB lensing can be both a blessing and a nuisance. It’s a nuisance because it generates spurious B-mode polarisation which obscures the highly-sought-after signal from inflationary gravitational waves\, but it’s a blessing because it can be used to reconstruct maps of the projected matter distribution of the Universe\, from which any physics affecting the growth of cosmic structure can be constrained. In this talk\, I will focus on systematics that need to be addressed in order to harness the full statistical power of upcoming CMB experiments and make progress in both of these exciting areas. In the first part of my talk\,  I will briefly review the ways in which extragalactic emission from galaxies and clusters can bias CMB lensing reconstruction power spectra and cross-correlations with other tracers of the matter distribution. I will then present ongoing work on a novel approach where we model these biases analytically as a function of experimental characteristics\, enabling improved physical insight\, a quantification of theoretical uncertainties and potentially opening the door to improved mitigation methods. In the second part of the talk\, I will explain how the lensing contamination to CMB B-modes can be removed — what is known as delensing — in order to facilitate searches for inflationary gravitational waves\, and describe limitations of the commonly-used “template” approach to delensing. I will then briefly summarize preparatory efforts to delens data from the upcoming Simons Observatory. Finally\, I will conclude by discussing biases affecting the procedure (and how to mitigate them) when lensing is reconstructed internally from the CMB itself\, and in the alternative scenario where the CIB is used as a tracer of the matter. \nSpeaker: Utkarsh Giri (Perimeter Institute of Theoretical Physics)  \nTitle: “Exploring kSZ velocity reconstruction with N-body simulations and the halo model” \nAbstract:  \nKSZ velocity reconstruction is a recently proposed method for mapping the largest-scale modes of the universe\, by applying a quadratic estimator v̂ to the small-scale CMB and a galaxy catalog. We implement kSZ velocity reconstruction in an N-body simulation pipeline and explore its properties. We find that the reconstruction noise can be larger than the analytic prediction which is usually assumed. We revisit the analytic prediction and find additional noise terms that explain the discrepancy. The new terms are obtained from a six-point halo model calculation\, and are analogous to the N(1) and N(3/2) biases in CMB lensing. We implement an MCMC pipeline which estimates fNL from N-body kSZ simulations and show that it recovers unbiased estimates of fNL\, with statistical errors consistent with a Fisher matrix forecast. Overall\, these results confirm that kSZ velocity reconstruction will be a powerful probe of cosmology in the near future\, but new terms should be included in the noise power spectrum. \nJoin Zoom Meeting: https://lbnl.zoom.us/j/97706913102?pwd=QVl4M0xScklRbUwyVXNVbkF2R0tDUT09 \nMeeting ID: 977 0691 3102 \nPasscode: 505782 505782 \nAbstract: https://inpa.lbl.gov/event/special-double-f…tkarsh-giri-pitp/
URL:https://inpa.lbl.gov/event/special-double-feature-virtual-inpa-seminar-anton-baleato-lizancos-cambridge-and-utkarsh-giri-pitp/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20201120T120000
DTEND;TZID=America/Los_Angeles:20201120T130000
DTSTAMP:20260404T073039
CREATED:20201109T005051Z
LAST-MODIFIED:20201113T222559Z
UID:920-1605873600-1605877200@inpa.lbl.gov
SUMMARY:VIRTUAL INPA SEMINAR | Liang Dai (UCB)
DESCRIPTION:Speaker: Liang Dai (UC Berkeley) \nTitle: A New Window Into the Universe: Gravitational Waves From Compact Binary Coalescence \n Abstract: \nDetection of chirping gravitational waves (GWs) at ground-based laser interferometry observatories LIGO and Virgo have uncovered a population of compact binary mergers. Forthcoming observing runs with upgraded sensitivity and more observatories joining the network will tremendously increase the number of source systems\, which will shed light on their astrophysical origin and enable to exploit those events as cosmological probes. I will present independent efforts by the IAS group to analyze the publicly available LIGO/Virgo data and report newly discovered GW events in addition to what experimental collaborations have reported. I will highlight several original and crucial data analysis methodologies we have developed for template matching\, noise characterization and parameter estimation. In addition\, I will give outlook on gravitational lensing of cosmological GW sources as expected from forthcoming observations and envisage its applications. I will explain our new findings of how wave propagation effects\, measurable with GWs but unfeasible with usual electromagnetic sources\, can allow extraction of unique information to reconstruct the lens or to probe non-luminous sub-galactic dark matter structures\, thereby deepening our understanding of the matter distribution in the Universe. \nJoin Zoom Meeting\nhttps://lbnl.zoom.us/j/95757502382?pwd=bkdDbGx4NlVKUGVkY0NYVE85Y2RuZz09\nMeeting ID: 957 5750 2382\nPasscode: 554719
URL:https://inpa.lbl.gov/event/virtual-inpa-seminar-liang-dai-ucb/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20201204T120000
DTEND;TZID=America/Los_Angeles:20201204T130000
DTSTAMP:20260404T073039
CREATED:20201130T164628Z
LAST-MODIFIED:20201130T171000Z
UID:928-1607083200-1607086800@inpa.lbl.gov
SUMMARY:VIRTUAL INPA SEMINAR | Tongyan Lin (UCSD)
DESCRIPTION:Speaker: Tongyan Lin (UC San Diego) \nTitle: Direct Detection of Sub-GeV Dark Matter with the Migdal Effect in Semiconductors \nAbstract: \nAs direct detection experiments expand the search for sub-GeV dark matter and lower their energy thresholds\, the many-body physics of crystals can be increasingly important and also be used to enhance discovery potential. In this talk\, I will discuss the Migdal effect in semiconductors\, which is the creation of charge signals from inelastic dark matter-nucleus scattering. The Migdal effect has previously been studied in atomic targets\, and used to set limits in liquid Xe experiments. Because of the smaller gap for electron excitations\, we find that the rate for the Migdal effect is much higher in semiconductors\, and accounting for it can significantly improve the reach of experiments. \nJoin Zoom Meeting  \nhttps://lbnl.zoom.us/j/92147497949 \nMeeting ID: 921 4749 7949 \nPasscode: 441771
URL:https://inpa.lbl.gov/event/virtual-inpa-seminar-tongyan-lin-ucsd/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20201211T120000
DTEND;TZID=America/Los_Angeles:20201211T130000
DTSTAMP:20260404T073039
CREATED:20201207T162252Z
LAST-MODIFIED:20201207T162252Z
UID:933-1607688000-1607691600@inpa.lbl.gov
SUMMARY:VIRTUAL INPA SEMINAR | Elena Gramellini (Fermilab)
DESCRIPTION:Speaker: ​Elena Gramellini (​Fermilab) \nTitle: Seeing the ​L​ight in ​P​ixelated TPCs: Q-Pix and LILAr  \nAbstract: \nNoble elements Time Projection Chambers (TPC) are the detector technology of choice for the next generation of discovery at the intensity frontier. These detectors provide a number of experimental handles\, such as full 3D-imaging\, excellent particle identification and precise calorimetric energy reconstruction which makes them extremely flexible tools suitable for a wide range of physics measurements. Indeed\, TPC applications range from dark matter\, rare decays and capture\, neutrino oscillations and nucleon decay\, and neutrino less double beta decay. A key feature of noble elements for particle detectors is the double response to the passage of charged particles in the active volume\, in the form of correlated ionization charge and scintillation light. \nIn the context of the Deep Underground Neutrino Experiment (DUNE)\, the liquid argon community is showing great interest in developing a large scale pixelated charge readout for multi-kTon scale detectors. Pixels offer a number of benefits compared to the traditional 2D projective wire readout\, ranging from the robustness against single point failure to the native 3D nature of the data. However\, a light detection solution which would allow the full exploitation of the detection capabilities for pixelated TPCs needs to be developed:  the solutions used in traditional 2D wires projective readouts are not satisfactory (nor easily applicable). In this seminar\, we present Q-Pix — the technology which could translate pixelated readout into a reality for multi-kTon scale TPCs — and LILAr — an imaginative idea for light detection systems in pixelated TPCs. \nJoin Zoom Meeting https://lbnl.zoom.us/j/94272918445?pwd=ZHFCWUpZUXZyM2J5UVdMSmtsa1Fxdz09 \nMeeting ID: 942 7291 8445 \nPasscode: 188851
URL:https://inpa.lbl.gov/event/virtual-inpa-seminar-elena-gramellini-fermilab/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20201218T120000
DTEND;TZID=America/Los_Angeles:20201218T130000
DTSTAMP:20260404T073039
CREATED:20201213T231230Z
LAST-MODIFIED:20201213T231230Z
UID:937-1608292800-1608296400@inpa.lbl.gov
SUMMARY:VIRTUAL INPA SEMINAR | Patrick Komiske (MIT)
DESCRIPTION:Speaker: Patrick Komiske (MIT) \nTitle: Optimizing Particle Physics With Machine Learning \nAbstract: \nExciting new advances in particle physics\, particularly in the area of jet physics at colliders such as the LHC\, are being driven by machine learning (ML) methods. For example\, in just a few short years\, the state of the art for important tasks such as jet classification has progressed from cutting on single observables to hyper-variate classifiers that can be trained directly on data. In this talk\, I will discuss these and other developments that demonstrate broad synergy between ML and particle physics\, including training and calibrating jet classifiers directly on data\, visualizing and quantifying jets from the CMS Open Data with a recently proposed metric between collider events\, and simultaneously unfolding multiple observables with the OmniFold method. \nJoin Zoom Meeting\nhttps://lbnl.zoom.us/j/96028254060?pwd=OUxQbmNzVXpFNkk0YTZLdUtTczhGQT09 \nMeeting ID: 960 2825 4060\nPasscode: 456994
URL:https://inpa.lbl.gov/event/virtual-inpa-seminar-patrick-komiske-mit/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20210108T120000
DTEND;TZID=America/Los_Angeles:20210108T130000
DTSTAMP:20260404T073039
CREATED:20201218T185920Z
LAST-MODIFIED:20201218T185920Z
UID:939-1610107200-1610110800@inpa.lbl.gov
SUMMARY:VIRTUAL INPA SEMINAR | Kelly Stifter (Stanford)
DESCRIPTION:Speaker: Kelly Stifter (Stanford University) \nTitle: The LZ Dark Matter Experiment: From Detector Development to First Physics \nAbstract: \nLZ is a next generation dark matter search designed to significantly extend our sensitivity to WIMP dark matter candidates. At the core of the LZ experiment is a dual-phase xenon time projection chamber (TPC) with a 7 ton active mass. The detector has been assembled at the Sanford Underground Research Facility (SURF) in Lead\, South Dakota and is now in the commissioning phase. After 1000 days of live time\, LZ will achieve a sensitivity of about 1.4 x 10-48 cm2 at 40 GeV/c2 WIMP mass\, improving on previous results by over an order of magnitude. In this talk\, I will give an overview of the development\, construction\, and current commissioning status of the experiment\, focusing in particular on the liquid xenon detector at the core of LZ. I will highlight the design and implementation of key features that drive the sensitivity of the experiment\, including scintillation and ionization detection thresholds and control of backgrounds.\n\n\nJoin Zoom Meeting https://lbnl.zoom.us/j/93293950850?pwd=TmdTUEt1cjEyREtPbHM1U25nNzJNQT09 \nMeeting ID: 932 9395 0850 \nPasscode: 489069
URL:https://inpa.lbl.gov/event/virtual-inpa-seminar-kelly-stifter-stanford/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20210115T100000
DTEND;TZID=America/Los_Angeles:20210115T110000
DTSTAMP:20260404T073039
CREATED:20210110T123206Z
LAST-MODIFIED:20210110T123206Z
UID:947-1610704800-1610708400@inpa.lbl.gov
SUMMARY:Virtual INPA SEMINAR| Nguyen Phan (LANL)
DESCRIPTION:Speaker: Nguyen Phan (Los Alamos National Laboratory)  \nTitle: “Understanding Electrical Breakdown in Liquid Helium through Analysis of the Empirical Breakdown Field Distributions” \nAbstract: \nMany present and future large-scale detectors in nuclear\, particle\, and astroparticle physics experiments will employ very high voltages and/or high electric fields inside a noble liquid detection medium.  However\, electrical breakdown in these dielectric materials is still poorly understood and may pose a challenge to the design and operation of such experiments.  The neutron electric dipole moment (nEDM) experiment currently being developed to be mounted at the Spallation Neutron Source (SNS) at Oak Ridge National Laboratory will perform its measurements in superfluid helium with a target field of 75 kV/cm.  Vital to achieving such a high field at large-scale is a better understanding of the breakdown phenomenon.  To that end\, we have collected data on the distribution of the breakdown voltages for small stainless steel electrodes with different surface polishes immersed in liquid helium\, at various temperature and pressures\, with the goal of providing guidance on the design of the high voltage system for the nEDM experiment at SNS\, but also with potential application to other noble liquid experiments.  In this talk\, we will show how a statistical analysis of our data can be used to determine the electrode surface area scaling of the breakdown field\, a behavior that is of central importance to the design of large-scale detectors employing high voltage.  We will show that the dependence of the probability of breakdown on the field strength\, extracted from the data\, closely resembles that of the field emission\, giving a strong indication that the initial process involves the field emission from the cathode.  A method to optimize the design of arbitrary-shaped electrodes to reduce the risk of breakdown is also presented.  Most importantly\, the methods proposed in this work can be extended to other noble liquids to explore the behavior of electrical breakdown in those media. \nJoin Zoom Meeting \nhttps://lbnl.zoom.us/j/93758070002?pwd=OFIycS93bDBNTTY0SEsrNDcwdUZHQT09 \nMeeting ID: 937 5807 0002 \nPasscode: 876187
URL:https://inpa.lbl.gov/event/virtual-inpa-seminar-nguyen-phan-lanl/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20210115T120000
DTEND;TZID=America/Los_Angeles:20210115T130000
DTSTAMP:20260404T073039
CREATED:20210104T215609Z
LAST-MODIFIED:20210104T215609Z
UID:942-1610712000-1610715600@inpa.lbl.gov
SUMMARY:VIRTUAL INPA SEMINAR | Yifan Chen (Univ. of Bern)
DESCRIPTION:Speaker: Yifan Chen (University of Bern\, Switzerland) \nTitle: Just A Little Kick: Low-Energy Transfer Muon-Neutrino νμ Charged-Current Interactions on Argon \nAbstract: \nAccelerator neutrino oscillation experiments provide a sensitive way to approach a few major open questions in neutrino physics. To achieve precision neutrino oscillation measurements\, we need a better understanding of key aspects of the experiments\, such as the detection technologies and neutrino interactions. In this talk\, I will focus on low-energy transfer muon-neutrino charged-current interactions using the MicroBooNE detector\, where the neutrinos give just a little kick to the target. Neutrino interactions are poorly understood at low-energy transfers. A number of experiments operating in few-GeV accelerator neutrino beams have found discrepancies between their measured data and model predictions in this region. We explore this region of phase space with Argon for the first time\, which will be valuable for constraining uncertainties for future accelerator-based neutrino oscillation experiments. In particular\, the short baseline neutrino program (SBN) and deep underground neutrino experiment (DUNE)\, both use Argon as their target material. In addition\, MicroBooNE employs the same liquid argon time projection chamber detector technology as SBN and DUNE\, which makes the detector physics studies carried out in this analysis an additional useful input for future neutrino oscillation experiments.\n\n\n\nJoin Zoom Meeting \nhttps://lbnl.zoom.us/j/96968189658?pwd=MEMzZC9XMmpmMTdVZ3o5MGJybTg3UT09 \nMeeting ID: 969 6818 9658 \nPasscode: 816559
URL:https://inpa.lbl.gov/event/virtual-inpa-seminar-yifan-chen-univ-of-bern/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20210122T120000
DTEND;TZID=America/Los_Angeles:20210122T130000
DTSTAMP:20260404T073039
CREATED:20210115T211646Z
LAST-MODIFIED:20210115T211646Z
UID:951-1611316800-1611320400@inpa.lbl.gov
SUMMARY:VIRTUAL INPA SEMINAR | Tucker Elleflot (LBNL)
DESCRIPTION:Speaker: Tucker Elleflot (Lawrence Berkeley National Laboratory) \nTitle: Multiplexed Readout of Transition Edge Sensors for CMB Polarization Experiments \nAbstract: \nThe polarization of the Cosmic Microwave Background (CMB) provides a valuable means to study the very early universe and high energy physics beyond the standard model. Remarkable experimental progress has been made on this front in the past decade. Modern experiments employ as many as O(10\,000) Transition Edge Sensor (TES) bolometers and highly multiplexed readout systems\, all operating below the photon noise level. My research has focused on the development of the sensors and multiplexing systems for CMB experiments. I will first describe my contributions to TES characterization for the POLARBEAR-2 experiment\, emphasizing a specific systematic effect created by the multiplexing system. Next I will discuss my current research: taking the lessons learned from POLARBEAR-2 to develop an even higher performance multiplexing system for the next generation of CMB experiments such as CMB-S4 and LiteBIRD. I will end by noting potential applications of this work to dark matter direct detection experiments using TES calorimeters. \nJoin Zoom Meeting\nhttps://lbnl.zoom.us/j/92456461157?pwd=dDM1YzBkVlIzS0pJTS9QUVFSK3pzQT09\nMeeting ID: 924 5646 1157\nPasscode: 637320
URL:https://inpa.lbl.gov/event/virtual-inpa-seminar-tucker-elleflot-lbnl/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20210129T120000
DTEND;TZID=America/Los_Angeles:20210129T130000
DTSTAMP:20260404T073039
CREATED:20210124T002424Z
LAST-MODIFIED:20210124T002424Z
UID:954-1611921600-1611925200@inpa.lbl.gov
SUMMARY:VIRTUAL INPA SEMINAR | Joseph DeRose (UC Santa Cruz)
DESCRIPTION:Speaker: VIRTUAL INPA SEMINAR | Joseph DeRose (UC Santa Cruz) \nTitle: “Models of the Non-Linear Universe for Precision Cosmology” \nAbstract: \nImaging and redshift surveys of galaxies and high resolution observations of the CMB promise to shed light on the physical nature of dark matter and dark energy in the coming decade. One of the main factors limiting the precision and accuracy of cosmological constraints coming from these measurements will be our understanding of how non-linear structure forms in our universe. In this talk I will present a roadmap for leveraging cosmological simulations to improve this understanding. First\, I will discuss recent progress on combining perturbative models of structure formation with N-body simulations in order to obtain highly optimized predictions for real-space galaxy clustering and weak lensing\, and describe how similar models might be used to confront a variety of observations. I will then show how realistic models of galaxy formation and evolution combined with contemporary machine learning techniques can be used as robustness tests for complex cosmological analyses\, with case studies from the Dark Energy Survey and the Dark Energy Spectroscopic Instrument. \nJoin Zoom Meeting \nhttps://lbnl.zoom.us/j/96158079387?pwd=aXY5QStNZUpUbUpUYUpTZm5SblYyZz09 \nMeeting ID: 961 5807 9387 \nPasscode: 363617
URL:https://inpa.lbl.gov/event/virtual-inpa-seminar-joseph-derose-uc-santa-cruz/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20210205T120000
DTEND;TZID=America/Los_Angeles:20210205T130000
DTSTAMP:20260404T073039
CREATED:20210201T165032Z
LAST-MODIFIED:20210201T165032Z
UID:957-1612526400-1612530000@inpa.lbl.gov
SUMMARY:VIRTUAL INPA SEMINAR | Zack Li (Princeton Univ.)
DESCRIPTION:Speaker: Zack Li (Princeton University) \nTitle: “Enabling New Views of the Early Universe from the Atacama in the Next Five Years” \nAbstract:  \nWe’re producing some exciting Cosmic Microwave Background data with high-resolution\, ground-based observations at 27 – 280 GHz\, from experiments like ACT\, SPT\, and (soon) SO and CMB-S4. I’ll discuss present and future challenges for CMB data analysis\, and show results from integrating Planck data analysis with the Simons Observatory power spectrum pipeline. I’ll also talk about prospects for these surveys to use the early Universe to detect the particle nature of dark matter\, and briefly introduce a theory code intended for machine learning. \nJoin Zoom Meeting  \nhttps://lbnl.zoom.us/j/97817863355?pwd=ckpYbFd6Y3pReXgwT1VEN1ZqdnVhQT09  \nMeeting ID: 978 1786 3355  \nPasscode: 229498
URL:https://inpa.lbl.gov/event/virtual-inpa-seminar-zack-li-princeton-univ/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20210212T120000
DTEND;TZID=America/Los_Angeles:20210212T130000
DTSTAMP:20260404T073039
CREATED:20210207T072344Z
LAST-MODIFIED:20210207T072344Z
UID:959-1613131200-1613134800@inpa.lbl.gov
SUMMARY:VIRTUAL INPA SEMINAR | Guang Yang (Stony Brook University)
DESCRIPTION:Speaker: Guang Yang (Stony Brook University) \nTitle: Securing An Accurate CP Violation Phase Measurement In DUNE \nAbstract:  \nThe requirements for a 5 non-zero delta CP violation phase measurement (if CP violation phase = -pi/2) are a wide-band muon neutrino beam\, a 1\,300 km baseline\, an order of 10s kt fiducial mass detector with high particle identification efficiency and low external background. Additionally\, the orders of uncertainty should be 2% for the signal and 5% for the background\, which requires an unprecedented level of robustness and redundancy in the measurement. Deep Underground Neutrino Experiment (DUNE) plans to achieve this goal. In this talk\, I will focus on some key concepts that were initiated by the Stony Brook Nucleon decay and Neutrino group. One of them is a new detector that is capable to detect the final state neutron kinetic energy named 3DST (3D projection scintillator tracker) and others include an idea to move part of the near detector system off-axis transverse to the beamline and employing a 10kt level water-based liquid scintillator detector as a far detector module. \nJoin Zoom Meeting \nhttps://lbnl.zoom.us/j/95279935975?pwd=dUtwMkJKU1JxYkF6U1c4ZHY3UTlpUT09\nMeeting ID: 952 7993 5975\nPasscode: 671109 \n 
URL:https://inpa.lbl.gov/event/virtual-inpa-seminar-guang-yang-stony-brook-university/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20210219T120000
DTEND;TZID=America/Los_Angeles:20210219T130000
DTSTAMP:20260404T073039
CREATED:20210214T013739Z
LAST-MODIFIED:20210214T013739Z
UID:963-1613736000-1613739600@inpa.lbl.gov
SUMMARY:VIRTUAL INPA SEMINAR | Zepeng Li (Yale University)
DESCRIPTION:Speaker: Zepeng Li (Yale University) \nTitle: Search For Neutrinoless Double Beta Decay In Liquid Xenon TPC \nAbstract: \nSearch for neutrinoless double beta decay is a direct tool to investigate the Majorana nature of the neutrinos and mechanism of neutrino mass generation. Discovery of neutrinoless double beta decay would be a direct indication of lepton number violation\, and provide a portal to probe physics beyond the Standard Model. The nEXO experiment\, built on the success of EXO-200 experiment\, will search for neutrinoless double beta decay of 136Xe using a large ultra-low background liquid xenon time projection chamber\, nEXO has distinct advantages of good energy resolution\, full 3-D reconstruction of energy depositions in the detector\, and excellent self-shielding against external backgrounds\, that will provide world-leading sensitivity to neutrinoless double beta decay. I will talk about the development of new experimental techniques for the nEXO experiment from both software and hardware perspectives. \nJoin Zoom Meeting \nhttps://lbnl.zoom.us/j/97776930106?pwd=Q0tybnYyRWtpcW1kTGR6M1F4dGtEQT09 \nMeeting ID: 977 7693 010 \nPasscode: 826943
URL:https://inpa.lbl.gov/event/virtual-inpa-seminar-zepeng-li-yale-university/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20210226T120000
DTEND;TZID=America/Los_Angeles:20210226T130000
DTSTAMP:20260404T073039
CREATED:20210218T190617Z
LAST-MODIFIED:20210218T190617Z
UID:966-1614340800-1614344400@inpa.lbl.gov
SUMMARY:VIRTUAL INPA SEMINAR | Jay Hun Jo (Yale University)
DESCRIPTION:Speaker: Jay Hun Jo (Yale University) \nTitle: Searching For Long Standing Anomalies In Particle Physics With COSINE-100 and MicroBooNE \nAbstract: \nTwo of the most pressing questions in particle physics are the nature of the dark matter in the universe and understanding neutrinos – overall and as an explanation for our matter dominated universe. In each case\, there are long standing anomalies which must be addressed for the fields to progress to new discoveries. DAMA’s claim of a dark matter-induced annual modulation signal is being addressed by the COSINE-100 experiment\, a direct detection dark matter detector with the same sodium iodide detectors as DAMA. The short baseline anomaly which includes MiniBooNE’s LEE result\, is being addressed by the MicroBooNE single-phase liquid argon time projection chamber. I will discuss recent results from COSINE-100 and the MicroBooNE experiment in these efforts. \nJoin Zoom Meeting \nhttps://lbnl.zoom.us/j/97940510926?pwd=STRFWFRlY3UrOXA0SVpjUko4QlBXUT09 \nMeeting ID: 979 4051 0926 \nPasscode: 184057
URL:https://inpa.lbl.gov/event/virtual-inpa-seminar-jay-hun-jo-yale-university/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20210305T120000
DTEND;TZID=America/Los_Angeles:20210305T130000
DTSTAMP:20260404T073039
CREATED:20210225T014909Z
LAST-MODIFIED:20210225T014909Z
UID:971-1614945600-1614949200@inpa.lbl.gov
SUMMARY:NO VIRTUAL INPA SEMINAR
DESCRIPTION:
URL:https://inpa.lbl.gov/event/no-virtual-inpa-seminar/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20210312T120000
DTEND;TZID=America/Los_Angeles:20210312T130000
DTSTAMP:20260404T073039
CREATED:20210305T034339Z
LAST-MODIFIED:20210305T034339Z
UID:975-1615550400-1615554000@inpa.lbl.gov
SUMMARY:VIRTUAL INPA SEMINAR | Gadi Afek (Yale University)
DESCRIPTION:Speaker: Gadi Afek (Yale University) \nTitle: Searches For New Physics Using Levitated Optomechanics \nAbstract: \nIn an attempt to provide further insight into one of the major questions of physics beyond the standard model\, highly sensitive optomechanical sensors are employed utilizing techniques synchronous with those of the atomic physics community. These sensors are table-top experimental tools offering exquisite control of mechanical and electrical degrees of freedom and isolation from the environment. They enable unprecedented acceleration sensitivities for ~ng objects\, while still maintaining the access needed to probe short-ranged dynamics. In my talk I will present the experimental setup and show results from two recent searches\, one looking for small recoils from passing DM particles and the other for slight deviations from charge neutrality\, opening a window into an exploration of dark matter particles bound to matter that may carry tiny electric charge. In both searches our results are complementary to much large-scale experiments. \nJoin Zoom Meeting\nhttps://lbnl.zoom.us/j/96643713841?pwd=a1JtMjNCdGhXVURFaUlTalErNHR2QT09\nMeeting ID: 966 4371 3841\nPasscode: 635143 \n—
URL:https://inpa.lbl.gov/event/virtual-inpa-seminar-gadi-afek-yale-university/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20210319T120000
DTEND;TZID=America/Los_Angeles:20210319T130000
DTSTAMP:20260404T073039
CREATED:20210322T202122Z
LAST-MODIFIED:20210322T202122Z
UID:978-1616155200-1616158800@inpa.lbl.gov
SUMMARY:NO VIRTUAL INPA SEMINAR TODAY
DESCRIPTION:
URL:https://inpa.lbl.gov/event/no-virtual-inpa-seminar-today/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20210326T120000
DTEND;TZID=America/Los_Angeles:20210326T130000
DTSTAMP:20260404T073039
CREATED:20210322T202223Z
LAST-MODIFIED:20210322T202223Z
UID:980-1616760000-1616763600@inpa.lbl.gov
SUMMARY:NO VIRTUAL INPA SEMINAR TODAY
DESCRIPTION:
URL:https://inpa.lbl.gov/event/no-virtual-inpa-seminar-today-2/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20210402T120000
DTEND;TZID=America/Los_Angeles:20210402T130000
DTSTAMP:20260404T073039
CREATED:20210325T214251Z
LAST-MODIFIED:20210325T214251Z
UID:982-1617364800-1617368400@inpa.lbl.gov
SUMMARY:VIRTUAL INPA SEMINAR | Zoya Vallari (CalTech)
DESCRIPTION:Speaker: Zoya Vallari (California Institute of Technology) \nTitle: Neutrino Oscillation Results & Future Prospects of the NOvA Experiment \nAbstract: \nNeutrino mixing parameters are rapidly being measured to a higher precision by many experiments\, however key questions such as mass hierarchy of neutrinos and CP violation in the lepton sector are still unanswered. NOvA is a long-baseline neutrino experiment that measures oscillation using the muon neutrinos and antineutrinos delivered by the NuMI beam at Fermilab. Neutrino oscillation is detected by observing appearance of electron (anti)neutrinos and disappearance of muon (anti)neutrinos at the Far Detector located near Ash River\, MN\, as compared to the Near Detector at Fermilab. \nThis talk will focus on the latest results from the joint analysis of neutrino and anti-neutrino oscillation by NOvA and highlight its current sensitivity to neutrino mixing and CP violating parameters. I will compare these results with other global results\, specifically the T2K experiment\, and outline the plans for the upcoming joint data analysis between the two experiments. \nJoin Zoom Meeting\nhttps://lbnl.zoom.us/j/99139885106?pwd=bG14Wk9ZOTVqakgvbnliK0hMS3ZWZz09\nMeeting ID: 991 3988 5106\nPasscode: 749065
URL:https://inpa.lbl.gov/event/virtual-inpa-seminar-zoya-vallari-caltech/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20210409T120000
DTEND;TZID=America/Los_Angeles:20210409T130000
DTSTAMP:20260404T073039
CREATED:20210405T023425Z
LAST-MODIFIED:20210405T023425Z
UID:985-1617969600-1617973200@inpa.lbl.gov
SUMMARY:NO VIRTUAL INPA SEMINAR | FRIDAY\, APRIL 9\, 2021
DESCRIPTION:
URL:https://inpa.lbl.gov/event/no-virtual-inpa-seminar-friday-april-9-2021/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20210414T120000
DTEND;TZID=America/Los_Angeles:20210414T130000
DTSTAMP:20260404T073039
CREATED:20210407T201845Z
LAST-MODIFIED:20210407T201845Z
UID:987-1618401600-1618405200@inpa.lbl.gov
SUMMARY:SPECIAL VIRTUAL INPA SEMINAR | Roger Huang (UCB)
DESCRIPTION:Speaker: Roger Huang (UC Berkeley) \nTitle: 0νββ Search Results from One Ton-Year of CUORE Data \nAbstract: \nThe search for neutrinoless double beta decay (0νββ) is currently the most sensitive way to test the hypothesis that neutrinos may be Majorana particles and obtain insight as to the nature of neutrino masses. CUORE (Cryogenic Underground Observatory for Rare Events) first began taking data over 3 years ago and is now one of the leading experiments in the current international 0νββ landscape. It utilizes a cryogenic bolometric approach\, operating 742 kg of TeO2 at a temperature of ~10 mK to search for the neutrinoless double beta decay of Te-130. This talk will present new results from the search for 0νββ with CUORE\, coming from an analysis of data corresponding to over one ton-year of exposure. \nJoin Zoom Meeting\nhttps://lbnl.zoom.us/j/95552707017?pwd=UXFwM2xabldGTXFrb25aNXJRQTlhUT09\nMeeting ID: 955 5270 7017\nPasscode: 479612
URL:https://inpa.lbl.gov/event/special-virtual-inpa-seminar-roger-huang-ucb/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20210416T120000
DTEND;TZID=America/Los_Angeles:20210416T130000
DTSTAMP:20260404T073039
CREATED:20210407T202220Z
LAST-MODIFIED:20210409T155542Z
UID:991-1618574400-1618578000@inpa.lbl.gov
SUMMARY:VIRTUAL INPA SEMINAR | Walter Pettus (Indiana University)
DESCRIPTION:Speaker: Walter Pettus (Indiana University Bloomington) \nTitle: Project 8: Towards the Atomic Tritium Future of Direct Neutrino Mass Measurement \nAbstract: \nNeutrino flavor oscillations provided the first break in the Standard Model by proving that neutrinos have nonzero mass\, but leave us with an unanswered question: How much mass?  Project 8 is a next-generation experiment based on the novel Cyclotron Radiation Emission Spectroscopy (CRES) technique to perform a radio frequency-based measurement of the tritium beta spectrum.  The goal of the phased program is to reach a mass sensitivity below 40 meV\, completely covering the allowed region of the inverted mass ordering. In this talk\, I will present results from the waveguide apparatus measurements of 83mKr and molecular tritium\, demonstrating the capabilities of the CRES technique.  Progress is underway on the next phase of the experiment focusing on a pair of critical technology demonstrations – scaling the CRES technique to a large free-space volume\, and production and trapping of a high-intensity atomic tritium source. \nJoin Zoom Meeting  \nhttps://lbnl.zoom.us/j/98529820162?pwd=VEFTcVlKS3B2RHY1QW1JZWJOQ2VLZz09  \nMeeting ID: 985 2982 0162  \nPasscode: 137386
URL:https://inpa.lbl.gov/event/virtual-inpa-seminar-walter-pettus-indiana-university/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20210423T120000
DTEND;TZID=America/Los_Angeles:20210423T130000
DTSTAMP:20260404T073039
CREATED:20210417T140041Z
LAST-MODIFIED:20210420T182404Z
UID:998-1619179200-1619182800@inpa.lbl.gov
SUMMARY:VIRTUAL INPA SEMINAR | Erin Hansen (UC Berkeley)
DESCRIPTION:Speaker: Erin Hansen (UC Berkeley)\n  \n\n\nTitle: Progress on the search for 2νββ of 130-Te to excited states of 130-Xe with CUORE \n  \nAbstract: \nThe CUORE experiment is a ton-scale bolometric array searching for the lepton number violating neutrinoless double-beta decay (0νββ) in the isotope 130-Te. While a discovery of 0νββ would herald new physics\, the Standard Model process of two-neutrino double-beta decay (2νββ) in 130-Te has been measured in CUORE. In such cases where the isotope decays to an excited state of the daughter\, 130-Xe\, gammas are emitted leading to events whose energy is spread across multiple crystals. CUORE is currently searching for this decay mode\, as understanding the branching ratio and spectral shape for such 2νββ decays to excited states can improve nuclear modelling and help constrain the matrix elements involved in searches for 0νββ. This talk will describe the status of and progress towards an improved search for 2νββ decays to excited states with an increased exposure of CUORE as well as additional analysis features. By exploiting the segmented nature of the CUORE detector\, the scope of event signatures considered in the search is expanded and further accompanied by an improved efficiency of signal containment. \nJoin Zoom Meeting \nhttps://lbnl.zoom.us/j/95917081698?pwd=SGcrNENWeEpHMUZXRHoyZy82a2Z3QT09 \nMeeting ID: 959 1708 1698 \nPasscode: 367723
URL:https://inpa.lbl.gov/event/virtual-inpa-seminar-eric-hansen-uc-berkeley/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20210430T120000
DTEND;TZID=America/Los_Angeles:20210430T130000
DTSTAMP:20260404T073039
CREATED:20210423T200054Z
LAST-MODIFIED:20210423T200054Z
UID:1005-1619784000-1619787600@inpa.lbl.gov
SUMMARY:VIRTUAL INPA SEMINAR | Sam Hedges (Duke University)
DESCRIPTION:Location: via Zoom \nSpeaker: Sam Hedges (Duke University) \nTitle: Experimental Tests of Low Energy Neutrino-Nucleus Interactions at the Spallation Neutron Source \nAbstract: \nThe intense flux of neutrinos produced at the Spallation Neutron Source (SNS) make it an ideal location to pursue studies of low energy neutrino-nucleus interactions. The COHERENT experiment has deployed a suite of detectors to the SNS to measure coherent elastic neutrino-nucleus scattering (CEvNS)\, a standard model process predicted more than forty years ago but only recently observed. CEvNS plays an important role in the evolution of a supernova\, is a background for WIMP searches\, and has potential applications for monitoring reactor neutrinos. In addition\, COHERENT is studying several inelastic neutrino-nucleus cross sections that are of interest for supernova neutrino detection and as backgrounds for CEvNS measurements. An overview of the COHERENT program at the SNS\, supporting nuclear physics measurements\, and recent results will be presented. \nJoin Zoom Meeting\nhttps://lbnl.zoom.us/j/99483481476?pwd=MXNjVHkwaTJBc1RoVVE2aU5ldXVCdz09\nMeeting ID: 994 8348 1476\nPasscode: 636854
URL:https://inpa.lbl.gov/event/virtual-inpa-seminar-sam-hedges-duke-university/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20210507T120000
DTEND;TZID=America/Los_Angeles:20210507T130000
DTSTAMP:20260404T073039
CREATED:20210429T231942Z
LAST-MODIFIED:20210429T231942Z
UID:1008-1620388800-1620392400@inpa.lbl.gov
SUMMARY:NO VIRTUAL INPA SEMINAR
DESCRIPTION:
URL:https://inpa.lbl.gov/event/no-virtual-inpa-seminar-2/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20210514T120000
DTEND;TZID=America/Los_Angeles:20210514T130000
DTSTAMP:20260404T073039
CREATED:20210507T165250Z
LAST-MODIFIED:20210507T165250Z
UID:1010-1620993600-1620997200@inpa.lbl.gov
SUMMARY:VIRTUAL INPA SEMINAR | Jessica Esquivel (Fermilab) | Friday\, May 14\, 2021
DESCRIPTION:Speaker: Jessica Esquivel (Fermilab) \nTitle: Can Wobbling Muons Probe Physics Beyond The Standard Model? Fermilab’s Muon g-2 Run 1 results.  \nAbstract: \nOn April 7th 2021\, Fermilab’s Muon g-2 experiment announced it’s first results of the precision measurement of the anomalous muon magnetic moment based on it’s 2018 Run-1 dataset. These results align with the Brookhaven National Laboratory experimental value and the combined values increases the tension between experiment and theory from 3.7 to 4.2 sigma. This talk will give an overview of the Fermilab Muon g-2 experiment\, discuss the steps necessary to precisely measure wobbling muons\, why this result has the physics community abuzz\, and what’s next. \nJoin Zoom Meeting\nhttps://lbnl.zoom.us/j/98052159063\nMeeting ID: 980 5215 9063\nPasscode: 631901
URL:https://inpa.lbl.gov/event/virtual-inpa-seminar-jessica-esquivel-fermilab-friday-may-14-2021/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20210521T160000
DTEND;TZID=America/Los_Angeles:20210521T170000
DTSTAMP:20260404T073039
CREATED:20210513T165536Z
LAST-MODIFIED:20210513T165536Z
UID:1015-1621612800-1621616400@inpa.lbl.gov
SUMMARY:VIRTUAL INPA SEMINAR | KE HAN (Shanghai Jiao Tong University)
DESCRIPTION:Speaker: Ke Han (Shanghai Jiao Tong University) \nTitle: Rare Event Searches with PandaX \nAbstract: \nPandaX is a staged xenon-based dark matter and rare event searching project located at the China JinPing underground Laboratory (CJPL). In this talk we will present the latest dark matter search results using the full exposure data of PandaX-II\, a 580-kg liquid xenon Time Projection Chamber (TPC). Special focus will be on the recent solar axion analysis with PandaX-II low-energy electron-recoil spectrum. We will also update the status of PandaX-4T\, the next generation multi-ton-scale liquid xenon experiment currently being commissioned at CJPL\, as well as PandaX-III high pressure gaseous TPC. \n\nJoin Zoom Meeting\nhttps://lbnl.zoom.us/j/94237908005?pwd=N3FNNVV1Q2lvQ3lnOENpSUVSOERlUT09\nMeeting ID: 942 3790 8005\nPasscode: 385209
URL:https://inpa.lbl.gov/event/virtual-inpa-seminar-ke-han-shanghai-jiao-tong-university/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20210528T120000
DTEND;TZID=America/Los_Angeles:20210528T120000
DTSTAMP:20260404T073039
CREATED:20210520T214109Z
LAST-MODIFIED:20210520T214109Z
UID:1020-1622203200-1622203200@inpa.lbl.gov
SUMMARY:VIRTUAL INPA SEMINAR | Lu Lu (University of Wisconsin-Madison)
DESCRIPTION:Speaker: Lu Lu (University of Wisconsin-Madison) \nTitle: Detection Of A Particle Shower at the Glashow Resonance with IceCube \nAbstract: \nFirst proposed in 1959 by S. L. Glashow\, the resonant creation of a W− boson from the interaction of an anti-electron neutrino with an electron has never been experimentally observed. In the electron rest-frame the required neutrino energy\, Eν ≈ 6.3 PeV\, is orders of magnitude greater than the energies of neutrinos created in Earth-based accelerators. As such\, efforts at observing the interaction have focused on large-scale high-energy neutrino observatories designed to detect neutrino interactions in a natural medium\, such as the cubic kilometer of Antarctic ice instrumented by the IceCube collaboration. In the talk I will report the first Glashow resonance candidate event from IceCube and the implications for the field in the future. \n\nJoin Zoom Meeting \nhttps://lbnl.zoom.us/j/98680929840?pwd=QzByTjFqVWEzdWtWYlQ5SUhUUmU5UT09\nMeeting ID: 986 8092 9840\nPasscode: 478626
URL:https://inpa.lbl.gov/event/virtual-inpa-seminar-lu-lu-university-of-wisconsin-madison/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20210604T120000
DTEND;TZID=America/Los_Angeles:20210604T130000
DTSTAMP:20260404T073039
CREATED:20210526T193520Z
LAST-MODIFIED:20210526T193520Z
UID:1024-1622808000-1622811600@inpa.lbl.gov
SUMMARY:NO VIRTUAL INPA SEMINAR
DESCRIPTION:
URL:https://inpa.lbl.gov/event/no-virtual-inpa-seminar-3/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20210611T120000
DTEND;TZID=America/Los_Angeles:20210611T130000
DTSTAMP:20260404T073039
CREATED:20210526T200308Z
LAST-MODIFIED:20210526T200308Z
UID:1026-1623412800-1623416400@inpa.lbl.gov
SUMMARY:VIRTUAL INPA SEMINAR | Bryan Ramson (Fermilab)
DESCRIPTION:Location: via Zoom \nSpeaker: ​Bryan Ramson (​Fermilab) \nTitle: Towards A New Generation of Bubble Chambers\n \nAbstract: \nLong baseline neutrino oscillation experiments present some of the most compelling paths towards beyond the standard model physics through measurement of PMNS matrix elements and observation of leptonic CP violation. State of the art long baseline oscillation experiments\, like NOvA and T2K\, are currently statistically limited\, however uncertainty in neutrino-nuclei scattering represent leading sources of systematic uncertainty and will fundamentally limit the precision of future experiments like DUNE and T2HK if not addressed. Neutrino cross section uncertainties can be reduced through high statistics measurement of neutrino interactions on light nuclei\, but creating a detector with an appropriate light target has proved elusive since the hydrogen bubble chambers of the previous century. Modern chamber based dark matter detectors like PICO/PICASSO/COUPP and the Scintillating Bubble Chamber have demonstrated that advances in sensor technology\, computing\, and automation would allow a modern bubble chamber to fully utilize the megawatt scale intensity LBNF beam through the use of high resolution and high speed cameras\, novel triggering\, and machine-learning based event reconstruction. This talk will review the broad physics program for the construction of a bubble chamber for use with neutrinos supplied by the LBNF. \n\nJoin Zoom Meeting https://lbnl.zoom.us/j/92148547097?pwd=UFp3THQ2U05TeUJiL3dwNVBIbHB1UT09 \nMeeting ID: 921 4854 7097 \nPasscode: 100306
URL:https://inpa.lbl.gov/event/virtual-inpa-seminar-bryan-ramson-fermilab/
END:VEVENT
END:VCALENDAR