Bulletin of the American Physical Society
2021 Joint Spring Meeting of the Texas Sections of APS, AAPT and Zone 13 of the SPS
Volume 66, Number 2
Thursday–Sunday, April 8–11, 2021; Virtual
Session A09: APS: Nuclear and Particle Physics-II |
Hide Abstracts |
Thursday, April 8, 2021 6:00PM - 6:12PM |
A09.00001: Fermi-LAT gamma-ray observations -- potential support for a multicomponent dark matter scenario BAILEY TALLMAN, DRUE LUBANSKI, SPENCER ELLIS, SABRINA HERNANDEZ, DIEGO CRISTANCHO GUERRERO, TREVOR CROTEAU, BRANDON TORRES, CADEN LAFONTAINE, ROLAND ALLEN There is tension between observations of gamma-ray emission from dwarf spheroidal galaxies, and other sources, and the most natural supersymmetric dark matter candidates. On the other hand, several independent analyses suggest that the observed emissions of gamma rays from the Galactic center are consistent with annihilation of dark matter particles of some kind, with masses somewhat below 100 GeV~[1-4]. We will describe a multicomponent dark matter scenario with a subdominant neutralino and a dominant higgson~[5] of mass $\sim$~75 GeV which is fully consistent with experiment and observation. [1]~Lisa Goodenough and Dan Hooper, arXiv:0910.2998 [hep-ph]. [2]~Vincenzo Vitale and Aldo Morselli (for the Fermi/LAT Collaboration), arXiv:0912.3828 [astro-ph.HE]. [3]~Christopher Karwin, Simona Murgia, Tim M. P. Tait, Troy A. Porter, and Philip Tanedo, Phys. Rev. D 95, 103005 (2017), arXiv 1612.05687 [hep-ph], and references therein. [4]~Rebecca K. Leane and Tracy R. Slatyer, Phys. Rev. Lett. 123, 241101 (2019), arXiv:1904.08430 [astro-ph.HE], and references therein. [5]~Reagan Thornberry, Gabriel Frohaug, Caden LaFontaine, Bailey Tallman, Alex Behne, Steven Sellers, Matthew Sadler, and Roland E. Allen, European Physical Journal Special Topics (in press), and references therein. [Preview Abstract] |
Thursday, April 8, 2021 6:12PM - 6:24PM |
A09.00002: Ar42/K42 Decay Backgrounds in Liquid-Argon-based Rare Event Searches Sagar Poudel Ar42/K42 decays can be a possible source of backgrounds in rare event searches with liquid argon detectors. In this talk, I will present various Monte Carlo-based studies I carried out to study and estimate the backgrounds from Ar-42/K-42 decays using DarkSide-50 data. I will summarize the techniques that have been used to measure the specific radioactivity of Ar42/K42 in liquid argon. I will also talk about the possible implications of Ar42/K-42 backgrounds in next-generation liquid-argon-based detectors employing multiple tons of liquid argon. [Preview Abstract] |
Thursday, April 8, 2021 6:24PM - 6:36PM |
A09.00003: ProtoDUNE and the Validation of The Deep Underground Neutrino Experiment Ahmed Bedair, Jaehoon Yu, Cristobal Garces, Aayush Bhattarai, Michael Solek, Steven Boucher, Harshwadhan Prasad, Hector Carranza, Eric Garcia, Gajendra Gurung The Deep Underground Neutrino Experiment (DUNE) is an international collaboration to investigate the properties of neutrinos and proton decay. ProtoDUNE, a set of prototype detectors currently at CERN, is a smaller scale effort currently under construction. The primary goal behind ProtoDUNE is to validate the theories behind DUNE. Other purposes of this include recording test data for understanding of the response and calibration of different particle species. [Preview Abstract] |
Thursday, April 8, 2021 6:36PM - 6:48PM |
A09.00004: Readout Tests of the ATLAS ITk Pixel System Toward the HL-LHC Upgrade Egor Antipov Data acquisition (DAQ) tests of the RD53a single chip cards (SCC) using Yet Another Rapid Readout (YARR), Front-End Link eXchange (FELIX) and Reconfigurable Cluster Element (RCE) readout systems are performed. Test stand for the DAQ tests of RD53a SCC was assembled at the SLAC National Accelerator Laboratory. YARR is the system developed for readout of up to 4 SCC or one quad module. It is widely used by universities and labs. FELIX system is designed to readout multiple modules; it is selected as the baseline readout system of the prototypes after the system integration. RCE is a System-on-Chip based readout system developed at SLAC, that is the principal data transmission qualification platform which also serves early module tests and large structure readout. DAQ tests of the three readout systems are required to proceed further with the ITk Pixel System upgrade toward the High Luminosity LHC Upgrade of the ATLAS detector. Comparison of results obtained with YARR, FELIX and RCE readout systems is presented. [Preview Abstract] |
Thursday, April 8, 2021 6:48PM - 7:00PM |
A09.00005: DUNE Field Cage Construction Infrastructure Cost Estimate and Quality Control Procedure Michael Solek, Jaehoon Yu, Wooyoung Jang, Aayush Bhattarai, Ahmed Bedair, Steven Boucher, Cristobal Garces, Harshwardhan Prasad, Hector Carranza, Skyler Ryu, Eric Garcia The Deep Underground Neutrino Experiment (DUNE) will precisely measure properties of neutrinos which make up a quarter of the fundamental particles in the Standard Model of particle physics. The DUNE detector will construct four liquid argon time projection chambers (TPC), each in an approximately 13,000 cubic meter cryostat. The field cage (FC) ensures uniformity of the electric field, essential for the TPC to precisely detect and reconstruct particle trajectory. Half of the detectors will be constructed by late 2020s, each requiring the construction of 200 3.5mX2.3m FC modules to generate the electric field. Due to the tight tolerances needed to keep the field uniform and maintain the high voltage safely, important infrastructure for the assembly of the FC modules was built, such as assembly tables to expedite construction of the modules and ensure tolerances are met. A basic cost analysis of the table's construction has been performed to assess financial impact on the project. Finally, we have developed a quality control procedure to ensure that the parts used to construct the modules meet the standards required. This presentation will discuss the FC design and construction infrastructure, the cost estimate process for the assembly table, and the FC quality control process. [Preview Abstract] |
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700