Bulletin of the American Physical Society
Joint Fall 2017 Meeting of the Texas Section of the APS, Texas Section of the AAPT, and Zone 13 of the Society of Physics Students
Volume 62, Number 16
Friday–Saturday, October 20–21, 2017; The University of Texas at Dallas, Richardson, Texas
Session E3: SPS II |
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Chair: Bob Glosser, University of Texas at Dallas Room: DGAC 1.102C |
Friday, October 20, 2017 4:15PM - 4:27PM |
E3.00001: The Optics of Lightguides for use in the NEXT-100 detector Ryan Clark Lightguides are an effective means of increasing the resolution of light detectors versus increasing the number of silicon photomultipliers(SiPM). By guiding incident light from one surface to another, we can minimize the number of SiPMs required. The Neutrino Experiment with Xenon Time Projection Chamber (NEXT) is seeking to use a one meter diameter lightguide in its TPC as part of their NEXT-Wheel project. The purpose of NEXT is to observe neutrino-less double-beta decay ${math}0\nu\beta\beta$ which would determine if the neutrino is its own anti-particle. This talk will cover the manufacture and optics of acrylic lightguides on smaller scales as a proof of concept for the up-scaled NEXT-Wheel. [Preview Abstract] |
Friday, October 20, 2017 4:27PM - 4:39PM |
E3.00002: Mammoth Mechanics Gissell Obregon, Jessica Davis, Paige Parliament, James Espinosa This past year the remains of a mammoth were discovered near Weatherford College. While the application of archeology can give certain physical measurements such as height and weight, there are still many unknowns when it comes to certain characteristics of the mammoth. However, with the application of introductory physics to the fossil we will determine the energetics and locomotion of this prehistoric creature. We will then compare our results with the accepted views of mammoths so that we main gain a better understanding of this extinct giant land mammal that once walked on our very own streets. [Preview Abstract] |
Friday, October 20, 2017 4:39PM - 4:51PM |
E3.00003: Recent observational constraints with figures of merit on the parameters of a variety of cosmological models, including some growth index parameterizations and comparisons using AIC and BIC methods Andrew Chang, Dr. Jacob Moldenhauer, Craig Nakutis We make a comparison of eight cosmological models according to how well they fit current observational data. The data we used in this work are: baryonic acoustic oscillations, with a total of six data points including the latest BAODR14 data point, normalized growth data, strong lensing, the joint light curve analysis sample of type Ia supernova, and the observational Hubble parameter cosmic chronometers data. We use the growth index parameter, $\gamma$ approximation, for the normalized growth function with three different parameterizations: exponential, constant, and interpolated. Since the models have different numbers of parameters, we utilize the Akaike and Bayesian information criteria to assess the goodness of fit of the models. We also compare the Figure of Merit for our parameter pairs. The Galileon Cosmology model and the flat Dvali Gabadadze Porrati model are excluded by current observations. The flat $\Lambda$ cold dark matter model has the best goodness of fit. The other cosmological models, while not as good as $\Lambda$ cold dark matter, are not entirely ruled out. [Preview Abstract] |
Friday, October 20, 2017 4:51PM - 5:03PM |
E3.00004: Toward Better Human Robotic Systems Michael Lynn The discovery of twisted coiled polymer actuators at UTD kicked off a whole new race in linear actuator technology. SFA will be extending the work done by UT et al. by introducing novel materials and manufacturing methods to the field of twisted coiled polymer actuators in the near future. Characterization experiments will be performed and fully automated manufacturing techniques quality tested for improvements in volume throughput and product reliability. SFA will search for the most efficient automatic processing method to produce twisted polymer actuators, whose properties approach commercial viability and prove a significant step forward in the field of biomimetic artificial muscles. [Preview Abstract] |
Friday, October 20, 2017 5:03PM - 5:15PM |
E3.00005: My summer as a software developer intern Crystal Brown This past summer, I worked as an intern software developer at ArcBest Technologies in Fort Smith. My team was given the task of rewriting the refunds system. This process involved both user interface and backend service and database design. Throughout the process, I encountered various challenges in which my background in physics, along with my developed problem solving skills, allowed me to think of multiple ways to solve these practical and real world challenges. I will outline a few of the challenges my team faced during this project and how we resolved them. [Preview Abstract] |
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