Posters

Permanent URI for this collection

Browse

Recent Submissions

Now showing 1 - 5 of 52
  • Item
    An Experiment to Simulate Trapping and Detection of Radioactive Isotopes Produced in ICF Implosions
    (Houghton College, 2022-04-27) Christensen, Micah J. ; Condie, Micah K. ; Brown, Adam E. ; Yuly, Mark ; McLean, James G. ; Padalino, Stephen J. ; Forrest, Chad J. ; Sangster, Thomas C. ; Regan, Sean
    It may be possible to measure the low energy nuclear cross sections of light ion reactions by trapping the reaction products from an Inertial Confinement Fusion (ICF) implosion and detecting their beta decays. To test this idea, an “exploding wire” experiment was designed to simulate the expanding gas released in an ICF event. A copper plated tungsten foil was inserted into a vacuum chamber and activated with a deuteron beam via 65 Cu(d, p) 66 Cu. A current pulse through the tungsten then vaporized the copper to create an expanding radioactive gas, simulating the gas behavior in the ICF target chamber following the laser shot. Attempts were made to capture some gas and detect the 66 Cu beta decays using two trap designs, one using a getter and the other a turbopump. Both designs used the Short Lived Isotope Counting System (SLICS), consisting of plastic scintillator phoswich detectors and fast electronics, to identify and count the beta particles. Funded in part by a grant from the DOE through the Laboratory for Laser Energetics, and by SUNY Geneseo and Houghton College.
    OMEGA Laser User’s Group Meeting, Laboratory for Laser Energetics, Rochester, NY, April 27, 2022; 63rd Annual Meeting of the APS Division of Plasma Physics, Pittsburgh, PA, November 8-12, 2021. XL Annual Rochester Symposium for Physics Students, University of Rochester, April 8, 2022
  • Item
    Background Rates Outside the OMEGA-60 Target Chamber Seconds to Minutes After a High-Yield Shot
    (Houghton College, 2022-04-27) Raymond, Steven ; Kowalewski, Tyler ; Yuly, Mark ; Padalino, Stephen ; Forrest, Chad J. ; Sangster, Craig ; Regan, Sean
    Inertial confinement fusion may be used to make fundamental nuclear science measurements of low-energy light-ion cross sections also of interest in astrophysics and fusion research. The feasibility of collecting and counting the beta decay of the reaction products (half-life 20 ms to 20 s) in the expanding neutral gas after the ICF shot is being studied using two types of “traps” – a getter and a turbopump. Both of these use phoswich detectors to identify beta particles and count the beta decays of the trapped product nuclei. One concern with this technique is that the background rate, even relatively long after the shot, may still be too high relative to the small number of detected product nuclei. An OMEGA ride-along experiment was performed to measure the background rates in these detectors from milliseconds to seconds after the laser shot. Funded in part by a grant from the DOE through the Laboratory for Laser Energetics, and by SUNY Geneseo and Houghton College.
    OMEGA Laser User’s Group Meeting, Laboratory for Laser Energetics, Rochester, NY, April 27, 2022; 63rd Annual Meeting of the APS Division of Plasma Physics, Pittsburgh, PA, November 8-12, 2021.
  • Item
    Producing the 2H (d,n)3He reaction with the Houghton College Cyclotron
    (Houghton College, 2022-04-08) Hotchkiss, Andrew ; Bowman, Joshua ; Yuly, Mark
    The Houghton College Cyclotron accelerates ions inside of a 17 cm inner diameter evacuated aluminum chamber placed between the poles of a 1.2 T electromagnet. Very low pressure gas allowed into the evacuated chamber is ionized by electrons coming from a filament. Inside the chamber, a high voltage RF signal applied to a “dee” shaped electrode accelerates the ions each time they are between the dee and a grounded “dummy dee”, resulting in a spiral path because of the magnetic field. The cyclotron has successfully accelerated hydrogen, helium and most recently, deuterium. The deuterons were allowed to implant into a copper target, where they reacted via 2 H( d,n 3 He to produce neutrons which were detected using a plastic scintillator outside the vacuum chamber.
    XL Annual Rochester Symposium for Physics Students, University of Rochester, April 8, 2022.
  • Item
    Simulating Low Temperature Detector Pulse Streams and Developing Edge Triggers
    (Houghton College, 2022-04-08) Ockrin, Timothy R. ; Koehler, Katrina
    XL Annual Rochester Symposium for Physics Students, University of Rochester, April 8, 2022.
  • Item
    An Ambient Air Scanning Tunneling Microscope to Study the Surfaces of Thin Metal Films
    (Houghton College, 2022-04-08) Wilson, Joshua ; Hoffman, Brandon
    XL Annual Rochester Symposium for Physics Students, University of Rochester, April 8, 2022.