Bulletin of the American Physical Society
APS April Meeting 2022
Volume 67, Number 6
Saturday–Tuesday, April 9–12, 2022; New York
Session E08: Undergraduate Research IIIRecordings Available Undergrad Friendly
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Sponsoring Units: SPS Chair: Brad Conrad, Society of Physics Students Room: Salon 4 |
Saturday, April 9, 2022 3:45PM - 3:57PM |
E08.00001: Magneto-Ionization Spacecraft Shield For Interplanetary Travel Keegan M Finger, Justin Brutger, Trevin Detwiler, Katya Harycki, Timothy Kutnink, Julie LaFranzo, Meredith Luttrell, Jack Messerli-Wallace, Sam Mortenson, Noah Peterson, Athanasios Petridis, Gabriel Summers, Daniel Viscarra, Mateo Viscarra, Zach T Wellens Magneto-Ionization Spacecraft Shield For Interplanetary Travel (MISSFIT) is a student-led research collaboration seeking to solve some of the primary problems regarding long-term space travel: radiation exposure and artificial gravity. We propose using an intense magnetic field in tandem with chambers of ionizing gas to attenuate harmful radiation before it can enter the craft, similar to the Earth's own magnetic field and ionosphere. To test the validity of this concept, we developed a relativistic Monte Carlo trajectory model wherein massive ions interact with a static magnetic field and ionizing gas. Our results indicate that high-energy ions will be deflected by the magnetic field whereas lower-energy ions will spiral around the field lines until their energy is dissipated, as expected. Using data compiled from the many space probes, we can make reasonable predictions about the efficacy of this solution to radiation exposure during extended periods in interplanetary space. To alleviate problem of absence of gravity on the organism we also propose methods to create artificial gravity by rotation or angular oscillations. This is also related to the size of the craft, therefore, the magnetic field used. We study the effects of the induced artificial gravity gradient on the cardiovascular system by means of the Navier-Stokes equations. |
Saturday, April 9, 2022 3:57PM - 4:09PM |
E08.00002: Detector and target simulations for the NAUM (Non-invasive Archaeometry Using Muons) program Edmundo J Garcia, Austin V Harton, Joseph Sagerer, Avery Brown, Leslie Carrillo, Michael Guadarrama The NAUM (Non-invasive Archaeometry Using Muons) program is a collaboration of US and Mexican institutions building a muon tracker detector for the exploration of El Castillo pyramid in the archaeological zone of Chichen Itza, Mexico. The development of non-intrusive remote sensing techniques has been one of the great interdisciplinary successes of archaeometry. Ground-penetrating radar and electrical resistivity tomography are examples that are mostly used for subsurface explorations. We propose to build imaging capabilities using a complementary technique utilizing the transmission of atmospheric muons through large archaeological buildings. The detector will be able to measure the flow and direction of atmospheric muons under the pyramid. Simulations of the pyramid geometry and detector acceptance are of critical importance to the project’s mission. In this talk, we will be describing the project, the detector, simulations and analysis development. |
Saturday, April 9, 2022 4:09PM - 4:21PM |
E08.00003: A Measurement of π0 ALL with the STAR 2013 Endcap Calorimeter Data Brook A Burbridge, Shirvel Stanislaus Longitudinally polarized protons are collided in the Solenoidal Tracker at RICH (STAR) located at Brookhaven National Laboratory to study the gluon spin contibution to the spin of the proton. Data have been collected in 2013 at √s = 510 GeV from which the spin-dependent assymetry of the neutral pion (π0) production, ALL, can be measured. The neutral pions are reconstructed using photons from the π0 decays detected in the Endcap Electromagnetic Calorimeter (EEMC). The EEMC, covering an intermediate pseudorapidity range of 1.1 < μ < 2, is able to measure the energy and position of the elctromagnetic showers from incoming photons. From these measurements, the two-photon invariant mass spectrum can be obtained, which is then fit using a scewed Gaussian function to represent the π0 signal and a Chebyshev function to charcterize the random two-photon background. The total number of π0s is obtained by integrating the resulting Gaussian peak. The π0 ALL is calculated from the number of π0s produced in collisions of protons with different spin alignments. Numerous checks must be carried out to ensure the quality of the very large data set used in this analysis. The current status of the analysis, focussing on the data quality assurance, will be presented. |
Saturday, April 9, 2022 4:21PM - 4:33PM |
E08.00004: Detector development tests for the NAUM (Non-invasive Archaeometry Using Muons) program Edmundo J Garcia, Olesson Cesalien, Austin V Harton, Joseph Sagerer The NAUM (Non-invasive Archaeometry Using Muons) program is a collaboration of US and Mexican institutions building a muon tracker detector for the exploration of El Castillo pyramid in the archaeological zone of Chichen Itza, Mexico. The development of non-intrusive remote sensing techniques has been one of the great interdisciplinary successes of archaeometry. Ground-penetrating radar and electrical resistivity tomography are examples that are mostly used for subsurface explorations. We propose to build imaging capabilities using a complementary technique utilizing the transmission of atmospheric muons through large archaeological buildings. The detector will be able to measure the flow and direction of atmospheric muons under the pyramid. In this talk, we will be describing the project, the detector and the development test taking place before the assembly of the tracker. |
Saturday, April 9, 2022 4:33PM - 4:45PM |
E08.00005: Convolutional Neural Networks for Shower Energy Prediction in Liquid Argon Time Projection Chambers Kiara Carloni When electrons with energies of O(100) MeV pass through a liquid argon time projection chamber (LArTPC), they deposit energy in the form of electromagnetic showers. Methods to reconstruct the energy of these showers in LArTPCs often rely on the combination of a clustering algorithm and a linear calibration between the shower energy and charge contained in the cluster. This reconstruction process could be improved through the use of a convolutional neural network (CNN). Here we discuss the performance of various CNN-based models on simulated LArTPC images, and then compare the best performing models to a typical linear calibration algorithm. We show that the CNN method is able to address inefficiencies caused by unresponsive wires in LArTPCs and reconstruct a larger fraction of imperfect events to within 5% accuracy compared with the linear algorithm. |
Saturday, April 9, 2022 4:45PM - 4:57PM |
E08.00006: Study of the back-to-back proton-kaon kinematics in the ep -> e’p’K+X reaction with CLAS12 at Jefferson lab. Alyssa L Gadsby, Fatiha Benmokhtar Polarized 10 GeV electron beam was scattered off a liquid hydrogen target during two run periods in 2018 and 2019 undergoing semi-inclusive deep inelastic scattering and giving rise to different hadron species. In this abstract, I will present the experimental setup and my work on the kinematical study of the ep->e'p'K+X channel. I will explain the detection mechanism and the selection of the back-to-back target fragmentation proton and current fragmentation kaon. Analysis techniques for the beam single spin asymmetries for this channel will be presented as well. |
Saturday, April 9, 2022 4:57PM - 5:09PM |
E08.00007: Strangeness-neutral Equation of State for QCD with a Critical Point Damien Price, Jamie M Karthein, Debora Mroczek, Angel R Nava, Jacquelyn Noronha-Hostler, Paolo Parotto, Claudia Ratti We construct a family of equations of state for QCD in the temperature range 30≤T≤800 MeV and in the chemical potential range 0≤μB≤450 MeV [1]. These equations of state match available lattice QCD results up to O(μB^4) and in each of them we place a critical point in the 3D Ising model universality class. Our results for the pressure, entropy density, baryon density, energy density and speed of sound can be used as inputs in the hydrodynamical simulations of the fireball created in heavy ion collisions. We follow the approach presented in Ref. [2], but we extend it to a more realistic scenario, which reflects the net-strangeness and net-electric charge content of the colliding nuclei in heavy-ion collisions. |
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