Bulletin of the American Physical Society
Annual Meeting of the APS Four Corners Section
Volume 62, Number 17
Friday–Saturday, October 20–21, 2017; Fort Collins, CO
Session L5: Particle and Nuclear Physics V |
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Chair: Sally Seidel, University of New Mexico Room: Lory Student Center 386 |
Saturday, October 21, 2017 11:10AM - 11:34AM |
L5.00001: Pushing the Limits of Quark-Gluon Plasma Formation Invited Speaker: James Nagle The Quark-Gluon Plasma is a high temperature state of matter where quarks and gluons are no longer bound in hadrons. The QGP as created in relativistic heavy ion collisions displays some remarkable properties including near perfect fluidity. Recent experiments have revealed similar signatures in collisions of smaller systems, including proton-proton and proton-nucleus reactions, and challenge our understanding of the requirements for QGP formation. [Preview Abstract] |
Saturday, October 21, 2017 11:34AM - 11:46AM |
L5.00002: Gas Cherenkov Muon Detector Max Weiner The future Deep Underground Neutrino Experiment will shoot a neutrino beam 1,300 km from Fermilab in Illinois to a detector in South Dakota to better understand neutrino properties.~ The beam is created by the decay of pions into neutrinos and muons.~ Therefore, by analyzing muons one can infer information about the neutrinos.~ This talk will focus on measuring the muon distribution at the beginning of the beam with the goal of constraining the associated neutrino beam.~ This is done by measuring Cherenkov radiation from muons passing through a detector filled with argon gas. There is a prototype detector at Fermilab in the NuMI beamline that makes these measurements. A muon distribution is approximated by observing and analyzing these signals over various gas pressures and detector orientations.~ This model, whose input is a signal and output a muon distribution, is built using computer simulations.~ I will discuss how such a model is created and how to go about comparing the simulations with real data. \newline [Preview Abstract] |
Saturday, October 21, 2017 11:46AM - 11:58AM |
L5.00003: A System for the Precision Placement of SiPMs on protoDUNE Photon Detector Readout Boards Anne Christensen, Norm Buchanan, Madeleine Jekot, David Warner The single-phase protoDUNE detector is a prototype of the proposed Deep Underground Neutrino Detector (DUNE) far detector technology. Silicon Photomultipliers (SiPMs) will be used to detect photons collected by the protoDUNE photon detectors. Strict design requirements dictate that the placement of the SiPMs on their readout boards must be extremely precise, about 100 microns in x and y coordinates. To achieve the desired precision, a Computer Numerical Control (CNC) machine is used. In this presentation I will discuss the placement system, including control software that has been developed. [Preview Abstract] |
Saturday, October 21, 2017 11:58AM - 12:10PM |
L5.00004: Tomographic Event Reconstruction Techniques in the MicroBooNE LArTPC Ivan Caro Terrazas Neutrino event reconstruction in liquid argon time projection chambers (LArTPCs) involves both the imaging of particle interactions and the subsequent performance of pattern recognition on the images to reconstruct particle tracks and electromagnetic showers in the detector. The imaging makes use of the charge and time information associated with ionization electron signals measured at the wire readout of the induction planes and collection plane. Wire-Cell, a novel approach to neutrino event reconstruction in LArTPCs that uses tomographic techniques for imaging of the event, has been developed recently for use at LArTPC neutrino experiments such as MicroBooNE (Micro Booster Neutrino Experiment) and DUNE (Deep Underground Neutrino Experiment). In this approach, the trajectories of particles in the event are mapped directly to a 3D image by matching local charge depositions across both the induction and collection planes. Using data from the MicroBooNE detector, we highlight the intricacies of signal processing in LArTPCs and characterize the performance of charge estimation at the wire readout, the cornerstone of the Wire-Cell approach to neutrino event reconstruction. [Preview Abstract] |
Saturday, October 21, 2017 12:10PM - 12:22PM |
L5.00005: Photon Detector Assembly and Testing for Single-Phase ProtoDUNE aurora popescu, Norm Buchanan, Anne Christensen, Justin Dokter, Blake Duff, Zach Rautio, Dave Warner ProtoDUNE is a prototype detector for the Deep Underground Neutrino Experiment (DUNE) that features Silicon Photomultipliers (SiPMs) attached to two different types of photon detector prototypes. These photon detectors will be installed in liquid argon as part of protoDUNE. In this presentation I will describe the assembly and testing of the prototype photon detectors. [Preview Abstract] |
Saturday, October 21, 2017 12:22PM - 12:34PM |
L5.00006: Developing Diamond Muon Detectors for DUNE Nicholas Johnston The Deep Underground Neutrino Experiment is a neutrino oscillation and mass hierarchy experiment currently under development, and will be the most sensitive neutrino experiment built to date when it begins operation in the mid-2020s. When a proton beam impacts the nuclei of a fixed target, kaons and pions are created which decay to muons and neutrinos. The muon beam will pass through an absorber hall containing many types of sensors to characterize the beam. One type of sensor which is being investigated is a diamond detector. These detectors are useful for real-time beam position, quality, and energy spectrum measurements. This talk will focus on the design, construction and testing of custom diamond detectors at the University of Colorado Boulder. [Preview Abstract] |
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