Bulletin of the American Physical Society
Joint Meeting of the Four Corners and Texas Sections of the American Physical Society
Volume 61, Number 15
Friday–Saturday, October 21–22, 2016; Las Cruces, New Mexico
Session B3: Neutrino Interactions |
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Chair: Robert L. Cooper, New Mexico State University Room: Meeting Room 2&3 |
Friday, October 21, 2016 10:00AM - 10:24AM |
B3.00001: Latest Results from NOvA Invited Speaker: Norm Buchanan The NOvA experiment is a long-baseline neutrino oscillation experiment utilizing the world's most intense muon neutrino beam, which originates at Fermilab before traveling 810 km to a far detector located in Minnesota. The goals of the NOvA experiment include determination of the neutrino mass hierarchy, a search for non-zero CP-violating phase angle, and precision measurements of neutrino oscillation parameters. In this talk I will present the latest NOvA results corresponding to an exposure of 6.05 $\times$ 10$^{\mathrm{20}}$ protons-on-target. [Preview Abstract] |
Friday, October 21, 2016 10:24AM - 10:36AM |
B3.00002: The MiniCLEAN Experiment Jui-Jen (Ryan) Wang, Michael Gold The MiniCLEAN (Cryogenic Low-Energy Astrophysics with Noble liquid) dark matter experiment will exploit a single-phase liquid argon detector instrumented with 92 photomultiplier tubes placed in the cryogen with 4-$\pi$ coverage of a 500 kg (150 kg) target (fiducial) mass. The detector design strategy emphasizes scalability to target masses of order 10 tons or more. It is designed also for a liquid neon target that allows for an independent verification of signal and background and a test of the expected dependence of the WIMP-nucleus interaction rate. For MiniCLEAN, PMT stability and calibration are essential. The Light-Emitting Diode (LED) based light injection system provide single photon for the calibration which can be performed in near real-time, providing a continuous monitor on the condition of the detector. This talk will summarize the status of detector and upcoming commissioning at SNOLAB in Sudbury, Canada. [Preview Abstract] |
Friday, October 21, 2016 10:36AM - 10:48AM |
B3.00003: Monitoring a liquid argon neutrino detector by Arduino. ilker parmaksiz Liquid Argon Time Projection Chambers (LArTPC's) are becoming one of the premier neutrino detector technologies being used in short-baseline oscillation experiments (such as Fermilab's Short-Baseline Neutrino Platform) and future long-baseline experiments (such as the Deep Underground Neutrino Experiment). A great deal of research is still underway to improve and understand these detectors and the development of small-scale LArTPC teststands at universities will aid in this effort. The University of Texas Arlington is building such a purified LArTPC teststand and thus requires active monitoring of many components as well as exploring low cost readout solutions for simple data acquisition. In this talk, we will present work done to utilize inexpensive micro-controllers (such as Arduinos) to actively monitor and control the cryogenic setup as well as some preliminary work to use these micro-controllers to readout various detector components including purity monitors and silicon photomultipliers (SiPM's). Acquiring data from Arduino to actively both store on computer and upload it to web-servers to get the alive view of the data from Internet , and notifying users via text message for abnormal temperature changes in the system. [Preview Abstract] |
Friday, October 21, 2016 10:48AM - 11:00AM |
B3.00004: An Overview of Where We Stand With CC Coherent Pion Production Zachary Williams Neutrino cross-sections are a critical component to any neutrino measurement. With the modern neutrino experiments aiming to measure precision parameters, such as those in long-baseline oscillation experiments, the need for a detailed understanding of neutrino interactions has become even more important. Within this landscape remains a number of experimental challenges in the regime of low energy neutrino cross-sections. This talk will give an overview of recent publications on Charged Current-Coherent Pion Production (CC-Coh Pion) results from a number of experimental collaborations. Specifically, the lack of observation from the SciBooNE and T2K collaborations to observe ~CC-Coh Pion below one GeV in contrast to the observation of this signature at higher energies by other experiments. The work presented here is a part of the beginning steps to a reanalysis of the SciBooNE data using a modern neutrino generator in order to better understand the previous results. The closing is a look to the future for a new analysis at low neutrino energies utilizing Liquid Argon Time Projection Chambers (LArTPCs) based at Fermilab. [Preview Abstract] |
Friday, October 21, 2016 11:00AM - 11:12AM |
B3.00005: Diamond Muon Monitors for DUNE Kerrie Dochen The Deep Underground Neutrino Experiment is currently in development, and is scheduled to begin taking data in the mid 2020s. This experiment will have better sensitivity toCP violation, mass hierarchy, and mixing angles thanany neutrino experiment built to date. There will be a number of important beam monitoring systems which will track beam stability and intensity and monitor the muonflux. The muon fluxcan give information about the neutrino flux, generated primarily by pions decaying into muons and neutrinos.The detector system will comprisea series of diamond solid state ionization detectors whichwill measure the spatial distribution of muons. Development of this detector system involves buildingand testing prototype detectors, testing commercial detectors, and developingand running a simulation to compare with the detector signals. This talk will focus primarily on test data from the commercial detectors, and in particular theirstability and long-term behavior. [Preview Abstract] |
Friday, October 21, 2016 11:12AM - 11:24AM |
B3.00006: Cosmic Ray Tagger for the Short-Baseline Neutrino Program Far Detector Christopher Hilgenberg, Robert Wilson, David Warner, Tyler Boone The icarus T600, the world's largest liquid argon time projection chamber, will be the far detector in the fnal short-baseline neutrino program (sbn). The T600 was located at gran sasso laboratory collecting data during exposure to the cngs beam and cosmic rays. In 2014, it was moved to cern for refurbishing and will move to fnal in 2017. As the far detector in sbn, the T600 will make measurements on neutrino interactions produced by both the bnb and numi beams. A challenge for the T600 will be exposure to cosmic rays during surface operation. Cosmic muons passing through or near the T600 active volume (av) can produce photons that mimic electron neutrino interactions. To maintain a high oscillation search sensitivity, a system external to the t600 av tagging cosmic muons with \textgreater 95{\%} efficiency is required. We report on the design of a cost-effective cosmic ray tagger by the colorado state university group that consists of a two-layer x-y configuration of organic scintillator bars with embedded optical fibers and silicon photomultiplier readout. [Preview Abstract] |
Friday, October 21, 2016 11:24AM - 11:36AM |
B3.00007: Progress on Neutrino-Proton Neutral-Current Scattering in MicroBooNE Stephen Pate The MicroBooNE Experiment at the Fermi National Accelerator Laboratory, an 89-ton active mass liquid argon time projection chamber, affords a unique opportunity to observe low-$Q^2$ neutral-current neutrino-proton scattering events. Neutral-current neutrino-proton scattering at $Q^2 < 1$ GeV$^2$ is dominated by the proton's axial form factor, which can be written as a combination of contributions from the up, down, and strange quarks: $G_A(Q^2) = \frac{1}{2}[-G_A^u(Q^2)+G_A^d(Q^2)+G_A^s(Q^2)]$. The contribution from up and down quarks has been established in past charged-current measurements. The contribution from strange quarks at low $Q^2$ remains unmeasured; this is of great interest since the strange quark contribution to the proton spin can be determined from the low-$Q^2$ behavior: $\Delta S = G_A^s(Q^2=0)$. MicroBooNE began operating in the Booster Neutrino Beam in October 2015. I will present the status in observing isolated proton tracks in the MicroBooNE detector as a signature for neutral-current neutrino-proton events. The sensitivity of the MicroBooNE experiment for measuring the strange quark contribution to the proton spin will be discussed. [Preview Abstract] |
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