Bulletin of the American Physical Society
Fall 2015 Joint Meeting of the Texas Section of the AAPT, Texas Section of the APS and Zone 13 of the Society of Physics Students
Volume 60, Number 15
Thursday–Saturday, October 29–31, 2015; Waco, Texas
Session F4: High Energy Physics II |
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Chair: Gerald Cleaver, Baylor University Room: A.207 |
Friday, October 30, 2015 1:30PM - 1:42PM |
F4.00001: Polyurethane spray coating of aluminum wire bonds to prevent corrosion and suppress resonant oscillations Matthew Kurth, Joseph Izen, George Boyd Unencapsulated aluminum wedge wire bonds are common in particle-physics pixel and strip detectors. Industry-favored bulk encapsulation is eschewed due to the range of operating temperatures and radiation. Wire bond failures are a persistent, source of tracking detector failure. Unencapsulated bonds are vulnerable to condensation-induced corrosion, particularly when halides are present. Oscillations from periodic Lorenz forces are documented as another source of wire bond failure. The investigation included spray application of polyurethane coatings, performance of polyurethane-coated wire bonds after irradiation and climate chamber exposure, and resonant properties of polyurethane-coated wire bonds and their resistance to periodic Lorenz force. [Preview Abstract] |
Friday, October 30, 2015 1:42PM - 1:54PM |
F4.00002: Optimization of Neutrino Flux Through the Variation of Horn Current for DUNE Kim Truc Nguyen The study focuses on maximizing the neutrino flux of the Deep Underground Neutrino Experiment (DUNE). This experiment was designed to detect different beam conditions in order to determine the optimal environment with regard to flux generation. An optimized beam condition will allow the detection of the most particles and the deflection of the most anti-particles with minimal energy requirement from the target. Several factors could be applied to analyze the effects of each beam condition on neutrino flux such as changing horn current, length and position of the first, second horns, and the decay pipe. Of the many contributing factors that determine the detected neutrino flux, our focus is to determine the current that would yield optimized conditions for flux generation. Different neutrino flux is generated by increasing the horn current in small increments of current interval while other factors hold constant. The result indicated that the optimized horn current for the machine would be approximately 230 kA. Further study should be conducted to determine other optimized conditions that also contribute to the neutrino beam optimization study. [Preview Abstract] |
Friday, October 30, 2015 1:54PM - 2:06PM |
F4.00003: Effects of Proton Incident Angle on Neutrino Flux for DUNE Eric Amador, Jeahoon Yu, Joshua Medford, Ronald Musser, Elizabeth Mallory, Animesh Chatterjee, kimberly Nguyen, Susan Kemboi, Monica Avila, Garrett Brown The Deep Underground Neutrino Experiment (DUNE) is a project under construction at Fermi Lab with the focus of studying neutrino oscillations through proton-target collisions. Using computer simulations at Fermi Lab, my study will enable me to observe the generation of electron and muon neutrinos. The purpose of my study is to maximize the muon neutrino and minimize the electron neutrino fluxes. This can be achieved by applying an incident angle on the proton beam and observe the parent pions which decay into neutrino particles. Future results will allow DUNE group members to run experiments more efficiently with lowered background noise. [Preview Abstract] |
Friday, October 30, 2015 2:06PM - 2:18PM |
F4.00004: Optimization of Pixel Sizes for Proton Alignment Monitor for DUNE at Fermilab Monica Avila, Jeahoon Yu, Ronald Musser, Joshua Medford, Eric Amador, Garrett Brown, Susan Kemboi, Animesh Chatterjee, Elizabeth Mallory, Kimberly Nguyen The purposes of this study is to readout the energy spectrum of the neutrino beam and locate protons that hit the beam's target, this experiment is currently being monitored by Deep Underground Neutrino Experiment (DUNE). Focusing in, my role is to take a closer look at the Proton Beam Alignment Monitor (PBAM), which is located at the end of the neutrino beam. My study is to find the optimal parameters of the pixel size that will be used to read data in the PBAM. We begin by setting standard centimeter-by-centimeter parameters. The studies have shown that a pixel size under 10cm is optimal. In the future, the plan is to continue with the parameter study and to determine the overall best pixel size. [Preview Abstract] |
Friday, October 30, 2015 2:18PM - 2:30PM |
F4.00005: Construction of Next Generation Dipole Magnets Jeffrey Breitschopf J.C. Breitschopf, P. McIntyre, R. Blackburn, T. Elliot, A. Dior, D. Chavez, J. Gerity -- Currently, the most common method for construction of dipole magnets is to use Rutherford cable. This work focuses on a completely new design utilizing a cable-in-conduit (CIC) dipole in which liquid helium flows inside the superconducting CIC. The CIC design eliminates inherent flaws of traditional Rutherford dipole while at the same time, is comparable in cost to traditional dipoles. Along with theoretical design, actual superconducting CIC was constructed and tested to explore construction methods of the CIC di-poles. In addition, tooling was developed that allows for bending the CIC in to the required design forms. [Preview Abstract] |
Friday, October 30, 2015 2:30PM - 2:42PM |
F4.00006: A NbTi Cable-in-Conduit conductor for the Medium-energy Electron-Ion Collider (MEIC) magnets and for ultimate-energy hadron colliders. Daniel Chavez, Peter McIntyre The Accelerator Research Lab at Texas A{\&}M University is developing a novel approach to building superconducting dipole magnets for future colliding beam facilities. The approach uses a cable-in-conduit (CIC) superconducting cable, in which a single layer of round NbTi wires cabled are cabled onto a thin-wall metal spring tube, then sheathed in a high-strength sheath tube. The CIC conductor integrates mechanical support, cryogenic cooling and quench protection within the cable so it can be fabricated into practical windings for superconducting magnets, motors, generators, and other applications. We are currently developing an NbTi-CIC cable for the dipole magnets of the Medium-energy Electron-Ion Collider (MEIC). MEIC is a proposed colliding beam facility in which polarized beams of ions and electrons are collided at energies up to 100 GeV/u for ions and 20 GeV for electrons. It is also the basis of optimum designs for the superconducting magnets that would be required for a future ultimate-energy hadron collider. In the present work we will describe the current state of art of the CIC development and the near-term plans for building a first dipole magnet. [Preview Abstract] |
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