INPA

Speaker: TBD Title:TBD
2024-02-06 12:00 - 13:00 (America/Los_Angeles)
INPA SEMINAR TALK
Date: Friday, March 1, 2024
Time: 12:00 PM – 1:00 PM
Location: Sessler Conference Room–50A-5132 [Hybrid and In-Person]
Speaker: TBA
Title: TBD
Abstract: TBD
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Meeting ID: 950 1669 6011
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CANCELED- NO INPA SEMINAR TALK
2024-02-09 12:00 - 13:00

[Special] Speaker: Alec Lindman (University of Mainz) Title: Atomic tritium for next-generation neutrino mass measurement with Project 8
2024-02-15 12:00 - 13:00
SPECIAL INPA SEMINAR
Date: Thursday, February 15, 2024
Time: 12:00 PM – 1:00 PM
Location: Sessler Conference Room–50A-5132 [Hybrid and In-Person]
Speaker: Alec Lindman (University of Mainz)
Title: Atomic tritium for next-generation neutrino mass measurement with Project 8
Abstract: Neutrinos provide a window to physics beyond the Standard Model through their nonzero mass, but new technology is required to push below current limits. Project 8 is a next-generation direct neutrino mass experiment with a sensitivity of 40 meV/c^2. We have established a new frequency-based technique, cyclotron radiation emission spectroscopy (CRES), to make precise, differential measurements of the endpoint region of the tritium beta-decay spectrum. Atomic tritium will improve Project 8’s sensitivity by 10 to 30 times over a similar molecular experiment. This talk will focus on the development of the new technologies to enable the atomic tritium experiment. I will outline Project 8’s atomic architecture, which includes large magnetic traps (~ 50 m^3) that store atoms at ~ 1 mK to benefit from CRES’s volume scaling, a chain of atom cooling and transport elements to maintain the intended density in the trap, and a tritium-compatible atom source that can provide the necessary flux of 10^19 atoms/s.
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Meeting ID: 950 1669 6011

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Speaker: Juliana Stachurska (MIT) Title: Large-volume CRES detectors for the Project 8 neutrino mass measurement
2024-02-16 12:00 - 13:00
INPA SEMINAR TALK
Date: Friday, February 16, 2024
Time: 12:00 PM – 1:00 PM
Location: Sessler Conference Room–50A-5132 [Hybrid and In-Person]
Speaker: Juliana Stachurska (MIT)
Title: Large-volume CRES detectors for the Project 8 neutrino mass measurement
Abstract: Project 8 is a next-generation experiment aiming to directly measure the neutrino mass using the tritium endpoint method with a targeted sensitivity of 40 meV. The development of new technology and methods are required to reach this unprecedented sensitivity. Having established a new measuring technique, Cyclotron Radiation Emission Spectroscopy (CRES), we are now focusing on the scaling of CRES to large volumes and the development of an atomic source for a pilot-scale CRES experiment with atomic tritium. In this talk, I will focus on the CRES development, highlighting the milestones already achieved, and will present our next R&D demonstrators.
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Meeting ID: 950 1669 6011

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Speaker: Jan Balewski (LBL/NERSC) Title: Programming Today's Quantum Computers
2024-02-23 12:00 - 13:00
INPA SEMINAR TALK
Date: Friday, February 23, 2024
Time: 12:00 PM – 1:00 PM
Location: Sessler Conference Room–50A-5132 [Hybrid and In-Person]
Speaker: Jan Balewski (LBL/NERSC)
Title: Programming Today’s Quantum Computers
Abstract: As the field of quantum computing continues to advance, cloud-based access to Quantum Computing Units (QPUs) is expanding research capabilities. This seminar outlines the current state of commercial quantum processors, including transmon-based systems from IBM, trapped ion processors by Quantinuum, and neutral atom platforms from QuEra.
The potential applications of quantum computing in addressing certain scientific domains are explored, including understanding gravitational phenomena and energy levels in chemical molecules. An introductory overview of quantum algorithms will be provided, with focus on demonstrating their capability for efficient sequenced data storage on a logarithmically small number of qubits. Results obtained from selected real quantum hardware will be presented, highlighting advancements in image processing and DNA sequence analysis. Additionally, an innovative approach for identifying low-energy states in large crystalline structures through the adiabatic evolution of a linear 58-spin Ising model will be discussed.
This seminar aims to introduce basic ideas behind theoretical quantum computing advancements and their practical scientific applications, offering insights into how quantum technologies can be utilized in contemporary research. It also sets the stage for enabling NERSC users to engage directly with quantum computation in their scientific endeavors in the future.
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Meeting ID: 950 1669 6011

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Speaker: TBA Title: TBD
2024-03-01 12:00 - 13:00

Speaker: Diya (Diyaselis) Delgado Lopez (Harvard) Title: Neutrinos as a gateway to the dark sector
2024-03-08 12:00 - 13:00
INPA SEMINAR TALK
Date: Friday, March 8, 2024
Time: 12:00 PM – 1:00 PM
Location: Sessler Conference Room–50A-5132 [Hybrid and In-Person]
Speaker: Diya (Diyaselis) Delgado Lopez (Harvard)
Title: Neutrinos as a gateway to the dark sector
Abstract: Evidence for the existence of dark matter strongly motivates the efforts to study its unknown properties. Additionally, the origin of high-energy astrophysical neutrinos detected by IceCube remains uncertain. Scotogenic models, in which neutrino mass generation occurs through interactions with the dark sector, are some of the leading theories that explain these two mysteries simultaneously. If dark matter and neutrinos couple to each other, we can search for a non-zero elastic scattering cross section. The interaction between an isotropic extragalactic neutrino flux and dark matter would be concentrated in the Galactic Center, where the dark matter column density is largest. The flux of high-energy neutrinos would be attenuated by this scattering, and the resulting signal, with correlated energy and arrival direction, can be observed in IceCube. Using the ten years of IceCube data, we perform an binned likelihood analysis, searching for several potential DM-neutrino interaction scenarios.
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Speaker: TBA Title: TBD
2024-03-15 12:00 - 13:00
INPA SEMINAR TALK
Date: Friday, March 15, 2024
Time: 12:00 PM – 1:00 PM
Location: Sessler Conference Room–50A-5132 [Hybrid and In-Person]
Speaker: TBA
Title: TBD
Abstract: TBD
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Meeting ID: 950 1669 6011
Passcode: 247722

Speaker: TBA Title: TBD
2024-03-22 12:00 - 13:00
INPA SEMINAR TALK
Date: Friday, March 22, 2024
Time: 12:00 PM – 1:00 PM
Location: Sessler Conference Room–50A-5132 [Hybrid and In-Person]
Speaker: TBA
Title: TBA
Abstract: TBD
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Meeting ID: 950 1669 6011
Passcode: 247722

NO INPA SEMINAR
2024-03-29 12:00 - 13:00
NO INPA SEMINAR TALK SCHEDULE FOR 3/29/2024

Speaker: Eric Gawiser (Rutgers) Title: Improving Photometric Redshifts for 3x2pt Cosmology: Training Sample Augmentation, Optimal Binning, and Neural Network Classifiers
2024-04-05 12:00 - 13:00
INPA SEMINAR TALK
Date: Friday, April 5, 2024
Time: 12:00 PM – 1:00 PM
Location: Sessler Conference Room–50A-5132 [Hybrid and In-Person]
Speaker: Eric Gawiser (Rutgers)
Title: Improving Photometric Redshifts for 3x2pt Cosmology: Training Sample Augmentation, Optimal Binning, and Neural Network Classifiers
Abstract: Large imaging surveys of galaxies rely on photometric redshifts (photo-z’s) and tomographic binning for 3 × 2 pt analyses that combine galaxy clustering and weak lensing. We divide simulated galaxy catalogs into training and application sets, where the spectroscopic training set is non-representative in a realistic way, and then estimate photometric redshifts for the application set. Spectroscopic training samples for the Vera C. Rubin Observatory Legacy Survey of Space and Time (LSST) will be biased towards redder, brighter, lower-redshift galaxies, leading to photo-z estimates with outlier fractions nearly 4 times larger than for a representative training sample. Training sample augmentation allows us to add simulated galaxies possessing otherwise unrepresented features to our mock spectroscopic training sample, reducing the outlier fraction of the photo-z estimates by 50% and the scatter by 56%. We sort the galaxies into redshift bins chosen to maximize the 3x2pt signal using a novel generalized binning parameterization introduced by Moskowitz et al. (2023, ApJ 950, 49). Applying a neural network classifier trained to identify galaxies that are highly likely to be sorted into the correct redshift bin improves the figure of merit by ∼13%, equivalent to a 28% increase in data volume.
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Meeting ID: 950 1669 6011
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Speaker: Elisabeth Krause (U of Arizona) Title: A Parameter-Masked Mock Data Challenge for Beyond-Two-Point Galaxy Clustering Statistics
2024-04-12 12:00 - 13:00
INPA SEMINAR TALK
Date: Friday, April 12, 2024
Time: 12:00 PM – 1:00 PM
Location: Sessler Conference Room–50A-5132 [Hybrid and In-Person]
Speaker: Elisabeth Krause (U of Arizona)
Title: A Parameter-Masked Mock Data Challenge for Beyond-Two-Point Galaxy Clustering Statistics
Abstract: The last few years has seen the emergence of a vast array of novel techniques for the analysis of high precision data from upcoming galaxy surveys, which are primarily motivated by the notion that any optimal analysis of galaxy clustering data should extend beyond the canonical two-point (2pt) statistics. We test and benchmark some of these new techniques
in a community data challenge “Beyond-2pt’’. The challenge dataset consists of high-precision mock galaxy catalogs for clustering in real-space, redshift-space, and on a light cone. Participants in the challenge have developed end-to-end pipelines to analyze mock catalogs and extract unknown (“masked”) cosmological parameters of the underlying LCDM models with their methods. The methods represented are density-split clustering, nearest neighbor statistics, BACCO power spectrum emulator, void statistics, field-level effective field theory (EFT), and joint power spectrum and bispectrum analyses using both EFT and simulation-based inference.
I will review the results of the challenge, focusing on problems solved, lessons learned, and future research needed to perfect the emerging beyond-2pt approaches.
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Meeting ID: 950 1669 6011
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Speaker: TBA Title: TBD
2024-04-19 12:00 - 13:00
INPA SEMINAR TALK
Date: Friday, April 19, 2024
Time: 12:00 PM – 1:00 PM
Location: Sessler Conference Room–50A-5132 [Hybrid and In-Person]
Speaker: TBA
Title:TBD
Abstract: TBD
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Meeting ID: 950 1669 6011

Speaker: Johann Martyn (Mainz University) Title: "Using Cherenkov light to measure solar neutrinos in liquid scintillator detectors "
2024-04-26 12:00 - 13:00
INPA SEMINAR TALK
Date: Friday, April 26, 2024
Time: 12:00 PM – 1:00 PM
Location: Sessler Conference Room–50A-5132 [Hybrid and In-Person]
Speaker: Johann Martyn (Mainz University) [Remote talk]
Title: Using Cherenkov light to measure solar neutrinos in liquid scintillator detectors

Abstract: At present, solar neutrinos are observed either with liquid scintillator detectors or with water Cherenkov detectors. Liquid scintillator detection in particular is the only technique that allows precision spectroscopy of sub-MeV solar neutrinos, which is made possible by the high light-yield of the scintillation, allowing for a low energy threshold of ∼0.2 MeV. In contrast, water Cherenkov detectors are only able to measure solar neutrinos above a few MeV with high precision. They reconstruct the event direction via the corresponding Cherenkov photon hits, to differentiate between the solar neutrino signal and the background events. A hybrid event detection approach, combining both the directional Cherenkov information and the high light-yield and low energy threshold of the scintillation spectroscopy enables an unprecedented precision for the measurement of solar neutrinos and potentially other physics goals. This talk describes the first measurement of solar neutrinos in a liquid scintillator detector through their directional Cherenkov photons, using Borexino, a 280 ton, high light-yield liquid scintillator detector at the Gran Sasso National Laboratory in Italy.
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Meeting ID: 950 1669 6011

Speaker: Carolina Cuesta-Lazaro (Harvard) Title: Big Data Cosmology Meets AI
2024-05-03 12:00 - 13:00
INPA SEMINAR TALK
Date: Friday, May 3, 2024
Time: 12:00 PM – 1:00 PM
Location: Sessler Conference Room–50A-5132 [Hybrid and In-Person]
Speaker: Carolina Cuesta-Lazaro (Harvard)
Title: Big Data cosmology meets AI
Abstract: The upcoming era of cosmological surveys promises an unprecedented wealth of observational data that will transform our understanding of the universe. Surveys such as DESI, Euclid, and the Vera C. Rubin Observatory will provide extremely detailed maps of billions of galaxies out to high redshifts. Analyzing these massive datasets poses exciting challenges that machine learning is uniquely poised to help overcome. In this talk, I will highlight recent examples from my work on probabilistic machine learning for cosmology. First, I will explain how a point cloud diffusion model can be used both as a generative model for 3D maps of galaxy clustering and as a likelihood model for such datasets. Moreover, I will present a generative model developed to reconstruct the dark matter cosmic web from biased galaxy clustering observations, in a probabilistic manner. And finally, I will introduce ongoing work on developing fast, differentiable, and accurate hybrid physics-ML simulators for N-body and hydrodynamical simulations. When combined with the wealth of data from upcoming surveys, these machine learning techniques have the potential to provide new insights into fundamental questions about the nature of the universe.
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Meeting ID: 950 1669 6011
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Speaker: Yashwanth Bezawada(UC Davis)Title: Pulsed neutron detection
2024-05-10 12:00 - 13:00
INPA SEMINAR TALK
Date: May 10, 2024
Time: 12:00 pm – 1:00 pm
Location: Sessler Conference Room – 50A-5132 [Hybrid and In-Person]
Speaker: Yashwanth Bezawada (UC Davis)
Title: Quest to understand neutron propagation in liquid Argon
Abstract: Liquid Argon (LAr) has become the primary detector material in many neutrino and dark matter experiments like DUNE, SBND, ICARUS, MicroBooNE, and DarkSide. In particular, multi-kiloton experiments like the Deep Underground Neutrino Experiment (DUNE) have stringent requirements for systematic uncertainties on the energy scale and resolution. Neutron production from neutrino interaction brings a large uncertainty on neutrino energy reconstruction in the form of missing energy. One of the proposed calibration systems is the Pulsed Neutron Source (PNS) system, which utilizes neutrons traveling long distances in liquid argon to calibrate the enormous DUNE far detector volume.
Thus, it is of utmost importance to understand neutron propagation and capture in liquid argon. The group at Davis is involved in an effort to measure the total neutron cross-section on Argon for a wide range of neutron energies. In this talk, I will talk about the ARTIE experiment that made the first effort to measure the cross-section dip at 57 keV, the Multiple Argon Experiments (MArEX) initiative, which was established to perform accurate transmission and capture measurements at the n_TOF facility in CERN, and the neutron generator test performed at CERN to test the feasibility of the PNS calibration system.
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Meeting ID: 950 1669 6011

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NO INPA SEMINAR
2024-05-17 12:00 - 13:00, 2024-05-24 12:00 - 13:00, 2024-09-06 12:00 - 13:00, 2024-09-20 12:00 - 13:00, 2024-09-27 12:00 - 13:00, 2024-10-11 12:00 - 13:00, 2024-10-18 12:00 - 13:00

Speaker: Elena Hernandez Martinez (CCA/LMU)Title: Simulating our Universe. How and Why?
2024-05-31 12:00 - 13:00
INPA SEMINAR TALK
Date: May 31, 2024
Time: 12:00 pm – 1:00 pm
Location: Sessler Conference Room – 50A-5132 [Hybrid and In-Person]
Speaker: Elena Hernandez Martinez (CCA/LMU)
Title: Simulating our Universe. How and Why?
Abstract: We will present SLOW, the simulated cosmic volume (500 Mpc/h) that features the most extensive collection of Local Universe Galaxy Clusters ever replicated, accurately set within the appropriate large-scale framework. We will show current predictions about these structures based on our simulated results and compare them with observational data. Additionally, the discussion will cover how these simulations open new avenues for research in galaxy cluster and cosmology studies.
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Meeting ID: 950 1669 6011

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NO INPA SEMINARS SCHEDULED FOR JUNE 7, 14, 21, and 28, 2024
2024-06-21 12:00 - 13:00
NO INPA SEMINAR ON JUNE 21, 2024
***Please note that Sessler CR 50A-5132 will not be available on June 7th and has been reserved for the DESI Review.***
INPA Seminars will reconvene on July 12

Speaker: Kenny Vetter (UC Berkeley)-Title: Quieting the Chaos in the Cold: Noise Cancellation Algorithms in CUORE's Search for 0νββ Decay
2024-07-19 12:00 - 13:00
INPA SEMINAR TALK
Date: July 19th
Time: 12:00 pm – 1:00 pm
Location: Sessler Conference Room – 50A-5132 [Hybrid and In-Person]
Speaker: Kenny Vetter (UC Berkeley)
Title: Quieting the Chaos in the Cold: Noise Cancellation Algorithms in CUORE’s Search for 0νββ Decay
Abstract: Neutrinos have puzzled physicists for decades despite significant strides in understanding them over the past thirty years, with many questions about their masses still remaining. The fact that neutrinos are indeed massive has shown that the Standard Model of particle physics, while wildly successful, is incomplete. This has motivated searches for Beyond Standard Model processes that may fundamentally change our understanding of nature. Among these potential processes is neutrinoless double beta decay $(0
ubetabeta)$, a theorized lepton number violating process. Experimental evidence of $0
ubetabeta$ decay would conclusively show that neutrinos are Majorana fermions. The Cryogenic Underground Observatory for Rare Events (CUORE) experiment is an ongoing search for $0
ubetabeta$ decay in $^{130}$Te. This talk will showcase the improvement in the CUORE data quality with a novel noise cancellation algorithm and detail the application of this algorithm to CUORE’s latest dataset with 2039 kg·yr of TeO$_2$ exposure. I will also report the results from CUORE’s search for $0
ubetabeta$ decay using this dataset. We find no evidence for $0
ubetabeta$ decay, and we place a lower limit on the half-life of $T_{1/2}^{0
u} > 3.8 times 10^{25}$ yr. Finally, I will discuss future searches for $0
ubetabeta$ decay beyond CUORE and how they will profit from future noise decorrelation algorithms.
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Meeting ID: 950 1669 6011

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Speaker: César Jesus-Valls (IPMU Tokyo)-Title:Neutrino physics in Japan in the era of precision measurements
2024-08-16 12:00 - 13:00
INPA SEMINAR TALK
Date: August 16th
Time: 12:00 pm – 1:00 pm
Location: Sessler Conference Room – 50A-5132 [Hybrid and In-Person]
Speaker: Speaker: César Jesus-Valls (IPMU Tokyo)
Title: Neutrino physics in Japan in the era of precision measurements
Abstract: Abstract: Japan has a uniquely rich neutrino research history, with the saga of Kamiokande detectors at its core. These experiments have shaped our current understanding of neutrino physics, particularly concerning the phenomenon of neutrino oscillations and igniting the blooming field of neutrino astrophysics. After refreshing the current knowledge and unknowns in neutrino physics, in the talk, I will review the Super-Kamiokande and T2K experiments, their working principles, physics programs, and recent results. In 2027, the next-generation experiment Hyper-Kamiokande, currently under construction, will commence, marking the start of a new era of neutrino physics searches focused on precision measurements. In the talk, I will review the physics prospects of Hyper-Kamiokande and provide an overview of the new era of neutrino physics that is upon us.
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Meeting ID: 950 1669 6011

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Speaker: Sindhu Kumaran (UC Irvine)- Title: The JUNO Experiment: Status and Prospects
2024-08-23 12:00 - 13:00
INPA SEMINAR TALK
Date: August 23rd
Time: 12:00 pm – 1:00 pm
Location: Sessler Conference Room – 50A-5132 [Hybrid and In-Person]
Speaker: Sindhu Kumaran (UC Irvine)
Title: The JUNO Experiment: Status and Prospects
Abstract: The Jiangmen Underground Neutrino Observatory (JUNO) is a 20 kton liquid scintillator detector currently under construction 700 m underground in southern China. It will simultaneously probe solar and atmospheric oscillations using reactor antineutrinos, featuring an energy resolution of ~3% at 1 MeV. By studying the disappearance of electron antineutrinos emitted from 8 nuclear reactors at a baseline of about 52.5 km, JUNO will determine the neutrino mass ordering to 3σ significance within about 6 years of data taking and will measure 3-neutrino oscillation parameters to sub-percent precision. In addition, JUNO has a broad physics program with solar neutrinos, geoneutrinos, supernova neutrinos, atmospheric neutrinos, diffuse supernova neutrino background, and searches for physics beyond the Standard Model. The experiment will also deploy a satellite detector called JUNO-TAO that will measure the energy spectrum of reactor antineutrinos with unprecedented energy resolution. This talk will discuss the design, current status, and physics prospects of the JUNO experiment.
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Meeting ID: 950 1669 6011

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NO INPA SPEAKER
2024-08-30 12:00 - 13:00

INPA SEMINAR SPEAKER: Max Smiley (UC Berkeley)-Title: Shining Lights: 8B Solar Neutrino Flux Measurement with SNO+ and R&D for Next-Generation Optical Neutrino Experiments
2024-10-04 12:00 - 13:00
INPA SEMINAR TALK
Date: October 4, 2024
Time: 12:00 pm – 1:00 pm
Location: Sessler Conference Room – 50A-5132 [Hybrid and In-Person]
Speaker: Max Smiley (UC Berkeley)
Title: Shining Lights: 8B Solar Neutrino Flux Measurement with SNO+ and R&D for Next-Generation Optical Neutrino Experiments
Abstract: Neutrino detection has been a crucial contributor to our understanding of physics for over half a century, with optical photon-based technology playing a prominent role. Large-scale, liquid-phase, unsegmented photon-based detectors continue to shed light on a broad array of physics, probing sources from the Sun to nuclear reactors, and from man-made neutrino beams to atmospheric interactions. In this talk, I discuss work with one such detector, SNO+, and in particular efforts to measure the ${}^8$B solar neutrino flux during its scintillator phase. The resulting measurement of $[5.74_{-0.77}^{+0.84}text{(stat.)}] times 10^{6}~text{cm}^{-2}~text{s}^{-1}$ gives confidence in the understanding of SNO+’s operations in this period and adds to the family of measurements made of this flux around the community. Additionally, for the past several years, much effort has been directed toward the development of a new paradigm known as “hybrid” detection, which aims to benefit from the two optical light emission mechanisms, Cherenkov radiation and scintillation, currently drawn on separately in today’s experiments. In the second part of this talk, I discuss explorations into the physics potential for neutrinoless double beta decay and CNO solar neutrino flux measurement at large-scales of this technology, as well as an examination of particle identification capability of the novel scintillating medium water-based liquid scintillator, a candidate hybrid detector material. These explorations provide a confirmation of the possibilities for hybrid detection and help pave the way for concrete realizations of these technologies at larger scales.

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Meeting ID: 950 1669 6011

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