Diego Aristizabal, USM, Chile
Constraints on neutrino generalized interactions from COHERENT data
November 2, 2018 (9:50 AM - 10:10 AM)
PDF, 0.55 MB
In this talk I will discuss the impact of recent COHERENT data on neutrino generalized interactions. I will show that scalar nuclear currents are the most constrained, while vector and tensor still allow for sizable effective couplings. I will discuss as well some implications of vector generalized interactions and will comment on the impact they have in the data fit.
David Caratelli, Fermilab
LArCADe: lowering thresholds in LArTPC detectors
November 3, 2018 (4:50 PM - 5:10 PM)
PDF, 2.71 MB
Single-phase Liquid Argon TPCs are widely used in neutrino physics to investigate MeV to GeV processes. While broad, this energy regime leaves out interesting physics whose signature is caused by nuclear recoils such as Dark Matter and CEvNS interactions. Lowering thresholds to the keV scale would require amplifying the signal produced by drifting electrons, something yet to be achieved in the liquid phase. We will present the LArCADe project, an R&D effort being conducted at Fermilab which aims to investigate the feasibility of obtaining stable charge amplification directly in the liquid phase in order to expand the physics reach of this detector technology. In this talk we introduce the LArCADe project concept, and report on its current status and future plans.
Bernadette K Cogswell, University of Manchester
Exploring New Roles for CEvNS and Neutrinos
November 3, 2018 (9:20 AM - 9:40 AM)
PDF, 23.91 MB
Current and future agreements and treaties dedicated to reducing the world nuclear stockpile require credible technologies to verify that agreement and treaty responsibilities are met. Ideally, these technologies should not only produce sound measurements, but should also be minimally intrusive. For the first part of this talk, I will discuss a project examining the potential use of advanced antineutrino detectors, relying on coherent elastic neutrino nuclear scattering, to monitor the U.S.-Russia Plutonium Management and Disposition Agreement. In the second part of this talk I will discuss a new initiative to identify evidence-based strategies and novel technologies to spur increased scientific discovery across a range of disciplines, using neutrino physics as a test bed. Taken together, both parts of this talk will emphasize exploring new roles for the study of CEvNS and neutrinos to play in the future.
Eric Dahl, Northwestern University
Progress on liquid-noble bubble chambers for CEvNS
November 3, 2018 (4:30 PM - 4:50 PM)
PDF, 15.25 MB
Liquid noble bubble chambers can reach much lower (sub-keV) nuclear recoil detection thresholds than their freon counterparts, while maintaining strong background discrimination. This makes them ideal candidates for CEvNS detection at continuous neutrino sources (reactors). I'll describe progress by the SBC Collaboration towards our immediate goals of (i) constructing a 10-kg LAr bubble chamber and (ii) demonstrating the thresholds necessary for reactor CEvNS detection.
James Dent, Sam Houston State University
The Migdal Effect, neutrino floor, and Bremsstrahlung in CEvNS
November 2, 2018 (3:10 PM - 3:30 PM)
PDF, 12.49 MB
This talk will discuss some recent work on the impact of the Migdal effect and bremsstrahlung for the detection of coherent elastic neutrino-nucleus scattering from solar, atmospheric, reactor, and pi decay at rest sources, as well as how it may impact direct dark matter detection.
Joseph Formaggio, MIT
The Ricochet Experiment
November 3, 2018 (10:50 AM - 11:10 AM)
PDF, 77.42 MB
The Ricochet experiment seeks to measure Coherent (neutral-current) Elastic Neutrino-Nucleus Scattering (CENNS) using dark matter style detectors placed in close proximity to a nuclear reactor core. We discuss the status of our research program, the scientific reach of the experiment, and our plans for moving forward on a future measurement.
Rupak Mahapatra, Texas A&M University
Status and Plans for the MINER Experiment
November 2, 2018 (5:30 PM - 5:50 PM)
PPTX, 17.12 MB
The Mitchell Institute Neutrino Experiment at Reactor (MINER) has started its engineering run and expects to take scientific data by end of this year. The experiment is expected to reach 5-sigma CNS measurement sensitivity in approximately 6 months. Beyond the CNS detection, MINER will focus on sterilne neutrino search using a unique movable core that will provide 2-10 meter short baseline measurements.
Ivan Martinez-Soler, Northwestern University
New constraints on the matter potential from global analysis of oscillation data
November 3, 2018 (8:00 AM - 8:20 AM)
PDF, 2.91 MB
The description of the neutrino evolution in matter has become crucial in the determination of most of the remaining uncertainties in the neutrino oscillation framework. Such is the case of the mass ordering or the phase that violates the CP symmetry in the lepton sector. In both cases, the interaction of neutrinos and antineutrinos with the matter determines the measurement of the parameter. In the presence of non-standard interactions (NSI) of the neutrino with the matter, their evolution and therefore the determination of the oscillation parameter will be altered. In this talk, we are going to discuss our knowledge of the size and flavor structure of NSI by a global fit of oscillation data, considering a general neutral current neutrino interaction with quarks. The lepton-flavor structure of the new interactions is independent of the quark type. The results have been obtained using all the available data from oscillation experiments alone and in combination with the resultson coherent neutrino-nucleus scattering from the COHERENT experiment. In our analysis we study the robustness of the three neutrino mixing scenario in the presence of NSI, and the LMA-D solution. As a result, we also derive new bounds of the non-standard couplings to up and down quarks. The results obtained are robust under the broad spectrum of up-to-down strengths found in the neutrino propagation along the Sun and the Earth.
Dimitri Misiak, IPNL
The CryoCube detector array for Ricochet
November 3, 2018 (11:10 AM - 11:30 AM)
PDF, 40.42 MB
Neutrinos continue to be a source of scientific wonder in nuclear physics, particle physics, and cosmology. Although much has been learned about the properties of neutrinos, much still pleads for more experimental investigation. The measurement of Coherent Elastic Neutrino-Nucleus Scattering (CENNS) has been a holy grail in neutrino physics since its prediction almost 40 years ago, and has now become a burgeoning field of research following its recent discovery by the COHERENT collaboration in July 2017. Following this first detection, the future Ricochet experiment aims at searching for new physics in the electroweak sector by providing the first low-energy and high-precision measurement of CENNS down to the O(10) eV energy-scale, where new physics signatures may arise. These include for instance the existence of sterile neutrinos and of new mediators, that could be related to the DM problem, and the possibility of Non Standard Interactions that would have tremendous implications on the global neutrino physics program. To this end, we are aiming at building a kg-scale cryogenic detector with outstanding sensitivity to low-energy nuclear recoils, that will be deployed at an optimal nuclear reactor site within the forthcoming Ricochet neutrino experiment. The key feature of this proposed detector technology is to combine two target materials: Ge-semiconductor and Zn-superconducting metal, both achieving O(10) eV energy thresholds with unparalleled background rejection capabilities. As this proposed detector, called CryoCube, is expected to reach a few sigma level CENNS detection significance in a single day, it will be uniquely positioned to probe various new physics scenarios after only one year of data taking.
Dimitrios Papoulias, NCSR Demokritos
Neutrino constraints on conventional and exotic CEvNS interactions
November 3, 2018 (2:30 PM - 2:50 PM)
PDF, 1.37 MB
I will discuss the updated constraints on both conventional and exotic neutrino physics, extracted from the first observation of neutral-current coherent elastic neutrino-nucleus scattering by the COHERENT experiment at the Spallation Neutron Source. Specifically, I will present updated bounds on various SM extensions involving nonstandard interactions (NSIs), neutrino electromagnetic (EM) properties, sterile neutrinos and new light mediators. Finally I will present the impact of current and future CEvNS data on nuclear structure models and dark matter physics.
Kelly Patton, University of Washington
CEvNS as a Probe of Nuclear Neutron Form Factors
November 3, 2018 (1:50 PM - 2:10 PM)
PDF, 6.28 MB
Coherent elastic neutrino-nucleus scattering is a potential probe of nuclear neutron form factors. We show that the neutron root-mean-square (RMS) radius can be measured with tonne-scale detectors of argon, germanium, or xenon. In addition, the fourth moment of the neutron distribution can be studied experimentally using this method. The impacts of both detector size and detector shape uncertainty on such a measurement were considered. The important limiting factor was found to be the detector shape uncertainty. In order to measure the neutron RMS radius to 5%, comparable to current experimental uncertainties, the detector shape uncertainty needs to be known to 1% or better.
Raimund Strauss, Technical University of Munich
NU-CLEUS: exploring coherent neutrino-nucleus scattering at low energies
November 3, 2018 (10:10 AM - 10:30 AM)
PDF, 35.37 MB
The detection of coherent-neutrino nucleus scattering opens up new opportunities to probe physics beyond the Standard Model such as the search for a neutrino magnetic moment or sterile neutrinos. We present a novel cryogenic neutrino experiment at a nuclear power reactor which allows for precision measurements with a miniaturized detector size. With a recent demonstrator we have achieved ultra-low thresholds of 20eV, one order of magnitude lower than previous devices, using a novel type of detector based on CRESST technology. We have initiated the NU-CLEUS experiment which aims to operate at close distance to a power reactor. In this talk I will report on the most recent results of the NU-CLEUS cryogenic detector, the ongoing background measurements and the experimental strategy of NU-CLEUS.
Javier Tiffenberg, Fermilab
Towards 10kg Skipper detectors
November 3, 2018 (11:50 AM - 12:10 PM)
PDF, 4.98 MB
The Skipper Charge-Coupled Device (CCD) is a ground breaking technology that is opening new paths for detecting low energy interactions. The first gram-scale instrument using the Skipper-CCD technology was produced in 2016 at the Fermi National Accelerator Laboratory in collaboration with the Lawrence Berkeley MicroSystems Lab. I will discuss the potential of the Skipper-CCD technology to scale up to particle detectors with thousands of sensors and tens of kilograms of active mass.
Marco Vignati, INFN - Roma
BULLKID - Bulky and low-threshold kinetic inductance detectors
November 3, 2018 (11:30 AM - 11:50 AM)
PDF, 8.73 MB
BULLKID is an R&D project on a novel cryogenic particle detector to search for rare low energy processes such as low-mass dark matter and neutrino coherent scattering off nuclei. The detector unit we are designing consists in an array of around 100 silicon absorbers sensed by phonon-mediated, microwave-multiplexed Kinetic Inductance Detectors (KIDs), with energy threshold below 100 eVnr and target mass of 30 g. The single detector unit will be engineered to ensure a straightforward scalability to a future kg-scale experiment. In this talk I will describe the proposed technology, based on our experience on KIDs as phonon mediated particle detectors, and the prospects of the project.
Victoria Wagner, CEA-Saclay, DRF/Irfu
The Very Near Site at Chooz - a New Exerimental Hall to Study CENNS
November 3, 2018 (10:30 AM - 10:50 AM)
PDF, 2.24 MB
Nuclear reactors are promising sources to run new-generation neutrino experiments exploring coherent neutrino-nucleus scattering (CENNS). In this talk, a new experimental site at the Chooz nuclear power plant in France, the Very Near Site (VNS), will be introduced along with first results from dedicated muon and neutron measurement campaigns. Based on these results, the feasibility of running a CENNS experiment at the VNS using the NU-CLEUS detector concept will then be discussed. Neutron background identification and rejection is a key point to successfully measure CENNS at reactors. Therefore, the talk will conclude with the status of the BASKET detector R&D program, which offers interesting possibilities to achieve neutron particle identification in a CENNS reactor experiment.
Joel W Walker, Sam Houston State University
Complementarity Short-Baseline Neutrino Oscillation Searches with CEvNS
November 3, 2018 (8:40 AM - 9:00 AM)
PDF, 8.01 MB
Anomalies in the expected magnitude and spectrum of neutrino flux have been pointed out for several years in reactor and Gallium data. Recently, the accelerator-based MiniBoone experiment has presented results consistent with neutrino anomalies observed previously by LSND. Various CEvNS experiments are well-positioned to probe possible connections of a short-baseline neutrino oscillation effect to existing anomalies. Considerable complementarity in the flavor and mass space is possible by a combination of experimental efforts.