Bulletin of the American Physical Society
2020 NMC, NSBP, and NSHP Conference
Thursday–Saturday, February 6–8, 2020; The University of Central Florida, Orlando
Session SP1: Student Poster Session |
Hide Abstracts |
Room: SGA Boardroom |
Friday, February 7, 2020 4:30PM - 4:42PM |
SP1.00001: Navigation & Orientation for Returning a Launched Rocket/Payload by Parafoil Oscar Schott My goal during my summer’s research was to create a viable form of navigation intended for use with a parafoil-guided payload from rocket or high-altitude balloon launches. The largest challenge I met in completing my goal was finding a suitable method for correcting the payload’s course without the use of a magnetometer (aka a compass), as we cannot rely on the magnetometer because magnetic interference generated by the payload renders it a very light paperweight, and without the ability to reference bearing, it is very difficult to complete the course corrections needed to navigate to a specified target. My initial use of GPS failed. Additionally, I coded, and engineered a gyro/accelerometer combination which will be able to detect turbulence, something the magnetometer is not capable of. Accuracy, on the other hand, is something the two sensors cannot achieve without further perfection of my algorithm - which is a work in progress. [Preview Abstract] |
Friday, February 7, 2020 4:42PM - 4:54PM |
SP1.00002: Tracking Sagittarius A* with Cosmic Ray Tracking Detector Nkeiru Ubadike, Dr. Raul Armendariz There are galactic cosmic rays (GCR) that reach high energies of 1PeV and some scientists propose that they originate from the black hole in the center of our galaxy: Sagittarius A*[1]. In light of these proposals, the cosmic ray tracking detector (Figure 1) is being configured to track Sagittarius A*. Automatic tracking was set up with use of computer software. Approximate tracking of certain celestial objects has been verified but issues remain with detector performance. [Preview Abstract] |
Friday, February 7, 2020 4:54PM - 5:06PM |
SP1.00003: Channel Activation of CHSH-nonlocality Rodrigo Araiza Bravo, Yujie Zhang, Virginia O. Lorenz, Eric Chitambar The production and use of nonlocal states are of fundamental importance in many quantum information protocols. Yet, the nonlocality of a state can be destroyed due to noisy communication channels. In this work, we analyze quantum channels that model several classes of experimental noise and that prohibit transmission of CHSH-nonlocal states. We call these quantum channels CHSH-breaking. We demonstrate that by combining two CHSH-breaking channels, we can recover a CHSH-violating outcome, therefore activating the CHSH-nonlocality of the quantum channels. We find that this type of activation can emerge in both uni-directional and bi-directional communication scenarios with robustness against errors in the channels' preparation. Our results are an important step towards more reliable quantum communication that requires transmission of nonlocal resources through networks. [Preview Abstract] |
Friday, February 7, 2020 5:06PM - 5:18PM |
SP1.00004: Enhanced Calculation of Higher Order Topological axion insulator EuIn$_2$As$_2$ Christopher Sims Topological insulators are materials that are insulating in the bulk and have relativistic surface states. Higher order topological insulators are the same, but the topological states exist in higher dimensions, these materials are realized in edge states that are a higher dimensional form of topological insulators. Axions are an ultralight particle that are a prime candidate for dark matter, however due tohier properties that are difficult to observe in nature. EuIn$_2$As$_2$ is an antiferromagnet has been predicted to be a higher order topological insulator (HOTI) and an axion insulator. However, recent experimental results disagree with the theoretical prediction. In this work, enhanced calculations are performed where the HOTI axion states exist in this material. [Preview Abstract] |
Friday, February 7, 2020 5:18PM - 5:30PM |
SP1.00005: Optimizing the Laser Optics Set-up to Lower the Emittance of the Argonne Wake?eld Accelerator Tamara Gonzalez Acevedo The Argonne Wake?eld Accelerator beamline is bolstered by a radio frequency photoinjector using a customized laser system to the cathode. This laser system includes an optics set-up with Microlenses Arrays (MLA) to create a homogenized laser beam spot and to improve the laser beam quality. The purpose of this research was to enhance the current optic set-up to reduce the laser intensity loss. The outcomes of this project were the following: testing experimentally the optics set-up and implementation of imaging system; improvement in the laser beam quality; and reduced laser loss due to large laser beam size at the lens. [Preview Abstract] |
Friday, February 7, 2020 5:30PM - 5:42PM |
SP1.00006: Revisiting the Orbital Parameters for the XO-3 System Keduse Worku, Songhu Wang, Jennifer Burt, Malena Rice, Xian-Yu Wang, Yong-Hao Wang, Steven S. Vogt, R. Paul Butler, Brett Addison, Brad Holden, Xi-Yan Peng, Zhen-Yu Wu, Xu Zhou, Hui-Gen Liu, Hui Zhang, Ji-Lin Zhou, Greg Laughlin We present 12 new transit light curves, and 16 new out-of-transit radial velocity measurements for the XO-3 system. By modelling our newly collected measurements, together with archived photometric and Doppler velocimetric data, we confirmed the unusual configuration of the XO-3 system, containing a rather massive planet in a relatively eccentric and shortperiod orbit around a massive star Furthermore, we find no strong evidence for a temporal change of either Vsini (and by extension, the stellar spin vector of XO-3), or the transit profile (and thus orbital angular momentum vector of XO-3b). We conclude that the discrepancy in previous Rossiter-McLaughlin measurements may have stemmed from observational noise. [Preview Abstract] |
Friday, February 7, 2020 5:54PM - 6:06PM |
SP1.00008: How can we teach ethics using a case study of the Thirty Meter Telescope? Alexander Vasquez, Brianne Gutmann, Daniel Barringer, Alice Olmstead It is important for STEM students to develop ethics knowledge. This is rarely taught in STEM classes and there are few instructional resources focused on ethics in STEM. We are incorporating ethics knowledge into curricular units for physics classes at Texas State University. Here, we focus on teaching about the ethics of building the Thirty Meter Telescope (TMT) in Hawaii for an observational astrophysics class. We developed ample resources for students to make informed decisions about this complex issue. The unit will encompass an introduction of the TMT, a local perspective in San Marcos, a history of Hawaii, and perspectives about the TMT relative to formal ethical frameworks. In Spring 2020, we will observe and video-record students' engagement with each other during this unit and collect their written work. We will analyze this data to better understand what worked well in our design and what could be improved. The results of our analysis can support the community of physics educators and education researchers in teaching about ethics in physics classes. [Preview Abstract] |
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