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PRODID:-//LBNL Physics Division Research Progress Meetings - ECPv6.8.3//NONSGML v1.0//EN
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X-ORIGINAL-URL:https://rpm.physics.lbl.gov
X-WR-CALDESC:Events for LBNL Physics Division Research Progress Meetings
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TZID:UTC
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TZOFFSETFROM:+0000
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DTSTART:20220101T000000
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BEGIN:VEVENT
DTSTART;TZID=UTC:20221201T160000
DTEND;TZID=UTC:20221201T170000
DTSTAMP:20260419T041422
CREATED:20221126T001315Z
LAST-MODIFIED:20221126T002240Z
UID:2052-1669910400-1669914000@rpm.physics.lbl.gov
SUMMARY:SPEAKER: Chamindu (Chami) Amarasinghe – U. of Michigan – TITLE: Expansive Dark Matter Searches with LZ
DESCRIPTION:This is a VIRTUAL Event \nTITLE: Expansive Dark Matter Searches with LZ \n\nABSTRACT: LUX-ZEPLIN (LZ) is an underground direct detection experiment that conducted its first search for Weakly Interacting Massive Particles (WIMPs) and set world-leading upper limits on spin-independent and spin-dependent WIMP-nucleon couplings. In this talk I describe this result\, and discuss how the WIMP search can be extended by considering all possible WIMP-nucleon interactions at the energy scale of direct detection using an effective field theory (EFT) approach. I also describe how tools from machine learning are applied in the EFT search\, and how unsupervised learning can be used to detect anomalies of various sources in data. Finally\, I will briefly discuss an experimental concept to measure electron and photon yields of nuclear recoils in liquid xenon at extremely low energies (below 0.3 keVNR)\, in order to improve the sensitivity of experiments like LZ to low mass WIMPs. \nZOOM Information –\n \n\nJoin Zoom Meeting\nhttps://lbnl.zoom.us/j/91782268585
URL:https://rpm.physics.lbl.gov/event/speaker-chamindu-chami-amarasinghe-u-of-michigan-title-expansive-dark-matter-searches-with-lz/
LOCATION:HYBRID 50A-5132 (Sessler Conference Room)\, https://lbnl.zoom.us/j/91782268585\, 50A-5132
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20221205T130000
DTEND;TZID=UTC:20221205T140000
DTSTAMP:20260419T041422
CREATED:20221128T195707Z
LAST-MODIFIED:20221128T195938Z
UID:2059-1670245200-1670248800@rpm.physics.lbl.gov
SUMMARY:SPEAKER: Roger Huang – LBNL – TITLE: Neutrinos from Different Angles
DESCRIPTION:This is an IN-PERSON Event \nLocation: Sessler Conference Room – 50A-5132 \nTITLE: Neutrinos from Different Angles \nABSTRACT: \nThere still remain many outstanding questions about the behavior and properties of neutrinos\, which are the subject of a wide range of experimental programs around the world. CUORE (Cryogenic Underground Observatory for Rare Events) is a cryogenic calorimetric experiment operating at ~10 mK to search for neutrinoless double-beta (0νββ) decay in Te-130\, which could shed light on the nature of neutrino masses and whether they are Majorana particles. I will present the most recent 0νββ results from CUORE\, as well as discuss development of deep-cryogenic electronics aimed towards its next-generation upgrade to CUPID (CUORE Upgrade with Particle ID). \nIn a different regime of neutrino physics\, DUNE (Deep Underground Neutrino Experiment) is a long-baseline neutrino oscillation experiment that will enable a variety of precision measurements\, including determination of the neutrino mass hierarchy and high-resolution probes of the neutrino CP-violating phase factor. I will discuss the current status and plans for DUNE and its upcoming prototype program ProtoDUNE-II\, with a focus on the cryogenic charge readout electronics for the far detectors. I will also discuss efforts to improve neutrino cross-section unfolding methods with the aid of neural networks using the Omnifold technique \n  \n\n\nZOOM Information – \n\nJoin Zoom Meeting\nhttps://lbnl.zoom.us/j/91782268585Meeting ID: 917 8226 8585
URL:https://rpm.physics.lbl.gov/event/speaker-roger-huang-lbnl-title-neutrinos-from-different-angles/
LOCATION:HYBRID 50A-5132 (Sessler Conference Room)\, https://lbnl.zoom.us/j/91782268585\, 50A-5132
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20221206T120000
DTEND;TZID=UTC:20221206T130000
DTSTAMP:20260419T041422
CREATED:20221129T222902Z
LAST-MODIFIED:20221129T225435Z
UID:2064-1670328000-1670331600@rpm.physics.lbl.gov
SUMMARY:SPEAKER: Anne Fortman – Harvard – TITLE: Searching for massive new particles using ionization energy loss and time of flight at ATLAS
DESCRIPTION:This is an IN-PERSON Event \nLocation: Sessler Conference Room – 50A-5132 \nTITLE: Searching for massive new particles using ionization energy loss and time of flight at ATLAS \nABSTRACT: \nDuring Run 2\, the LHC achieved collisions with a center-of-mass energy of 13 TeV\, potentially allowing us to produce new fundamental particles of higher masses than ever before. Using ionization energy loss and time-of-flight\, we can reconstruct the mass of heavy new particles predicted in a variety of models. In this talk\, we discuss the excess seen in the first-wave effort of a search using the Run 2 dataset at ATLAS\, and introduce an expanded search including time-of-flight. We present future prospects and discuss the hardware upgrades necessary to continue searching for new physics at the High Luminosity LHC. \n\nZOOM Information – \n\nJoin Zoom Meeting\nhttps://lbnl.zoom.us/j/91782268585\nMeeting ID: 917 8226 8585
URL:https://rpm.physics.lbl.gov/event/speaker-anne-fortman-harvard-title-searching-for-massive-new-particles-using-ionization-energy-loss-and-time-of-flight-at-atlas/
LOCATION:HYBRID 50A-5132 (Sessler Conference Room)\, https://lbnl.zoom.us/j/91782268585\, 50A-5132
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20221206T160000
DTEND;TZID=UTC:20221206T170000
DTSTAMP:20260419T041422
CREATED:20221129T225152Z
LAST-MODIFIED:20221201T181228Z
UID:2071-1670342400-1670346000@rpm.physics.lbl.gov
SUMMARY:SPEAKER: Maria Martinez-Casales – Iowa State University – TITLE: Constraining neutrino interaction incertainties for oscillation measurements in NOvA
DESCRIPTION:This is an IN-PERSON Event \nLocation: Sessler Conference Room – 50A-5132 \nTITLE: Constraining neutrino interaction incertainties for oscillation measurements in NOvA \nABSTRACT: \nThe NuMI Off-Axis Neutrino Appearance (NOvA) experiment is an 810 km baseline neutrino oscillation experiment measuring the fundamental properties of neutrinos and antineutrinos\, using the high statistics data from the Near Detector (ND) at Fermilab to produce predictions for the Far Detector (FD) in Minnesota. The expected neutrino spectrum is simulated using GENIE\, with the neutrino cross section model adjusted to better describe the ND data by modifying the rate of Meson Exchange Current (MEC) interactions and the Final State Interactions. In measurements published so far\, NOvA has compared the Far Detector data to an energy spectrum obtained from a data-driven prediction method based Near Detector (ND) data called extrapolation. This talk presents an alternate approach that directly constrains physics model parameters in the NOvA simulation using the ND data. The neutrino and antineutrino simulation is divided into subsets based on the multiplicity and topology of visible particles. These samples have meaningful features that are used to constrain the neutrino interaction model and flux parameters using Poisson maximum likelihood fitting procedure. This work shows the fitting method effectively constrains the model uncertainties with pseudodata generated by randomly varying physics parameters in the ND simulation. This is an initial step towards achieving a full analysis that includes the physics model parameters constraint from the ND data fit to measure the neutrino oscillation parameters. \nZOOM Information – \n\nJoin Zoom Meeting\nhttps://lbnl.zoom.us/j/91782268585\nMeeting ID: 917 8226 8585
URL:https://rpm.physics.lbl.gov/event/speaker-maria-martinez-casales-univ-of-oxford-title-constraining-neutrino-interaction-incertainties-for-oscillation-measurements-in-nova/
LOCATION:HYBRID 50A-5132 (Sessler Conference Room)\, https://lbnl.zoom.us/j/91782268585\, 50A-5132
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20221207T130000
DTEND;TZID=UTC:20221207T140000
DTSTAMP:20260419T041422
CREATED:20221201T182453Z
LAST-MODIFIED:20221201T182453Z
UID:2085-1670418000-1670421600@rpm.physics.lbl.gov
SUMMARY:SPEAKER: Ciaran Hasnip – University of Oxford – TITLE: The DUNE Neutrino PRISM
DESCRIPTION:This is an IN-PERSON Event \nLocation: Sessler Conference Room – 50A-5132 \nTITLE: The DUNE Neutrino PRISM \nABSTRACT: \nThe observation of neutrino flavour oscillations\, and the non-zero neutrino mass\, is the first confirmed measurement of physics beyond the standard model of particle physics. The Deep Underground Neutrino Experiment (DUNE) is a next-generation neutrino experiment designed to study these flavour oscillations in a 1300 km baseline neutrino beam. DUNE aims to measure CP violation in the lepton sector\, determine the neutrino mass hierarchy and precisely measure the neutrino oscillation parameters in a single experiment. The Precision Reaction Independent Spectrum Measurement (PRISM) concept presents a novel way to perform a neutrino oscillation analysis\, which has the potential to significantly reduce the impact of neutrino cross section systematic uncertainties in DUNE through the use of data-driven predictions of the measured neutrino event rate. After introducing the physics of neutrino oscillations\, this seminar will review the DUNE experiment and the role PRISM will play in its physics program.  \nZOOM Information – \n\nJoin Zoom Meeting\nhttps://lbnl.zoom.us/j/91782268585\nMeeting ID: 917 8226 8585
URL:https://rpm.physics.lbl.gov/event/speaker-ciaran-hasnip-university-of-oxford-title-the-dune-neutrino-prism/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20221208T160000
DTEND;TZID=UTC:20221208T170000
DTSTAMP:20260419T041422
CREATED:20221201T181408Z
LAST-MODIFIED:20221201T181915Z
UID:2077-1670515200-1670518800@rpm.physics.lbl.gov
SUMMARY:SPEAKER: Jaafar Chakrani – Laboratoire Leprince-Ringuet\, CNRS\, Ecole polytechnique – TITLE: Neutrino interactions: a challenge for T2K and beyond
DESCRIPTION:This is an IN-PERSON Event \nLocation: Sessler Conference Room – 50A-5132 \nTITLE: Neutrino interactions: a challenge for T2K and beyond \nABSTRACT: \nNeutrino oscillations offer a unique opportunity to explore physics beyond the Standard Model. Multiple current and planned experiments aim at precisely characterizing these oscillations with neutrinos artificially produced in accelerators. This is the case of the T2K experiment\, located in Japan\, which provides one of the world-leading constraints on how neutrinos oscillate.\nAn important obstacle in the making of such results is the modeling of neutrino interactions which could bias oscillation measurements. Indeed\, the uncertainties associated with neutrino-nucleus interactions are difficult to quantify and constrain as they cover a large range of poorly-understood nuclear physics of how neutrinos interact. \nIn this seminar\, I will present how accelerator-based neutrino experiments measure these oscillations\, with a focus on how we tackle the challenge of modeling neutrino-nucleus interactions in the T2K experiment. Furthermore\, I will show how the ongoing upgrade of the T2K near detector will provide valuable information to significantly improve our understanding of neutrino interactions. Finally\, I will discuss the prospects of overcoming this challenge in the context of the next-generation experiment DUNE. \n  \nZOOM Information – \n\nJoin Zoom Meeting\nhttps://lbnl.zoom.us/j/91782268585\nMeeting ID: 917 8226 8585
URL:https://rpm.physics.lbl.gov/event/speaker-ciaran-hasnip-univ-of-oxford-title-the-dune-neutrino-prism/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20221209T120000
DTEND;TZID=UTC:20221209T130000
DTSTAMP:20260419T041422
CREATED:20221201T183130Z
LAST-MODIFIED:20221201T183130Z
UID:2088-1670587200-1670590800@rpm.physics.lbl.gov
SUMMARY:SPEAKER: Josephine Paton – University of Oxford – TITLE: Directional Neutrino Measurements in Liquid Scintillators
DESCRIPTION:This is a VIRTUAL Event \nLocation: Sessler Conference Room – 50A-5132 \nTITLE: Directional Neutrino Measurements in Liquid Scintillators \nABSTRACT: \nNeutrinos are one of the most enigmatic particles in the Standard Model. Precise measurements of their properties are vital for our understanding of the subatomic world\, and may bring us closer to answering questions such as “Why do neutrinos have mass?” and “Why is the universe matter dominated?”. In order to do this\, novel technologies and methodologies are being developed to extract as much information as possible from the interactions of neutrinos on matter. \nLiquid scintillators have been utilised in neutrino detectors for decades\, benefitting from a high light yield which leads to precise energy reconstruction. However\, scintillation light is isotropic\, meaning scintillator detectors do not benefit from the directional information used in Cherenkov-based neutrino detectors. Significant investment has been put into developing new methods to extract Cherenkov information from scintillation signals\, allowing for a combination of energy precision and directional background rejection. In this talk I outline the methods developed for directional reconstruction in the SNO+ experiment\, and present the first demonstration event-by-event directionality of solar neutrinos in a high yield scintillator. \nZOOM Information – \n\nJoin Zoom Meeting\nhttps://lbnl.zoom.us/j/91782268585\nMeeting ID: 917 8226 8585
URL:https://rpm.physics.lbl.gov/event/speaker-josephine-paton-university-of-oxford-title-directional-neutrino-measurements-in-liquid-scintillators/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20221216T120000
DTEND;TZID=UTC:20221216T130000
DTSTAMP:20260419T041422
CREATED:20221207T045444Z
LAST-MODIFIED:20221211T003911Z
UID:2094-1671192000-1671195600@rpm.physics.lbl.gov
SUMMARY:SPEAKER: Kevin Fanning – Ohio State – TITLE: Excitement and Challenges with Multiplexed Spectroscopic Galaxy Surveys
DESCRIPTION:This is an in-person Event \nLocation: Sessler Conference Room – 50A-5132 \nTITLE: Excitement and Challenges with Multiplexed Spectroscopic Galaxy Surveys \nABSTRACT: \nThe ongoing Dark Energy Spectroscopic Instrument (DESI) Survey is collecting galaxy redshifts at an astounding rate. Analysis from this new data promises exciting new constraints on big cosmological problems such as dark energy models and primordial non-gaussianity along with a measurement of the sum of the neutrino masses. Key technologies including the robotic focal plane system help enable nearly 5\,000 simultaneous spectra with on average 2 minutes between exposures. In this talk I will describe some of the challenges encountered optimizing the DESI instrument for science results. Furthermore\, I will discuss some of the impact the focal plane and fiber assignment algorithms have on galaxy clustering data and some novel mitigations I am exploring to resolve this problem. Finally\, I will conclude with a look to the future and how we can engage in current efforts to build on the success of DESI. \nZOOM Information – \n\nJoin Zoom Meeting\nhttps://lbnl.zoom.us/j/91782268585\nMeeting ID: 917 8226 8585
URL:https://rpm.physics.lbl.gov/event/speaker-kevin-fanning-ohio-state-title-excitement-and-challenges-with-multiplexed-spectroscopic-galaxy-surveys/
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