The division of Nuclear and High Energy Physics welcomes your contributed research abstract for the ANPA 2022 conference. The topics included in this division include but not limited to:
Theoretical and Experimental High Energy Physics, Nuclear Physics, Particle Physics, etc.
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Session Schedule
Please look below for detailed schedule.
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Abstract Number: ANPA2022_0141 Presenting Author: Rakshya Khatiwada (Invited) Presenter's Affiliation: Illinois Institute of Technology Title: Dark Matter detection using superconducting qubits Show/Hide Abstract Coming soon
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Abstract Number: ANPA2022_0142 Presenting Author: Devendra Raj Upadhyay Presenter's Affiliation: Central Department of Physics, Tribhuvan University, Nepal Title: RADIATION SHIELDING PROPERTIES OF SAMARIUM DOPED LEAD ALUMINO PHOSPHATE GLASSES Show/Hide Abstract In a workplace with radio-isotopes and dealing with particles and heavy ions, radiation dose must be controlled properly to prevent hazards caused by exposure to radiation. Radiation shielding is indispensable for this situation since photons are always produced as secondary radiation of energetic charged particles and neutrons, and emitted from activated materials due to irradiation of primary particles. Shielding materials are used to protect people from ionizing radiation. In this work, we have studied the radiation shielding properties of the Al2O3-Sm2O3-PbO-P2O5 glass system using Phy-X/PSD and XCOM software for varying molar concentrations of PbO, P2O5, Al2O3, and Sm2O3. The gamma rays of energy ranging from 0.015 MeV to 15 MeV are considered for the study. The highest mass attenuation coefficient values are obtained in the low energy range in the order of 42.898 cm2g-1 to 73.385 cm2g-1 whereas the lowest mass attenuation values are obtained in the high energy range in order of 0.033 cm2g-1 to 0.044 cm2g-1. The half-value layer ranges from 0.002 cm to 4.756 cm within the energy range. The radiation shielding parameters; tenth value layer, effective electronic cross-section, effective charge state number, effective electron density, and fast neutron removal cross-sections are presented. The mean free path and fast neutron removal cross-sections of the sample are compared with other samarium-based glass and rock samples. Based on the shielding ability of glass samples they are arranged in increasing order as 48PbO-51.8P2O5-0.2Sm2O3 < 38PbO-60P2O5-1.8Al2O3-0.2Sm2O3 <48PbO- 50P2O5-1.8Al2O3-0.2Sm2O3 <58 PbO-40P2O5-1.8Al2O3 0.2Sm2O3.
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Abstract Number: ANPA2022_0143 Presenting Author: Niraj Dhital (Invited) Presenter's Affiliation: Central Department of Physics, Tribhuvan University Title: Astroparticle Physics at Extreme Energies: Current Status and Future Perspectives Show/Hide Abstract The natural accelerators of particles or mechanisms yet to be properly understood are capable of producing particles, energy of which can exceed 10^{20} eV-- much higher than that of particles accelerated by man-made accelerators. The quest to understand several aspects of such extremely energetic particles including, among others, the energy spectrum, upper
limits on photon and neutrino fluxes and arrival directions or sources, has been ongoing for several decades. I will present the latest results on ultra-high energy cosmic rays from the Pierre Auger Observatory. Also, I will present the expected extension on the frontiers of our knowledge in Astroparticle Physics with a focus on two other experiments- the Cosmic-Ray Extremely Distributed Observatory (CREDO) and the Baikal Gigaton Volume Detector (Baikal-GVD).
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Abstract Number: ANPA2022_0145 Presenting Author: Todd Satogata (Invited) Presenter's Affiliation: Jefferson Lab Title: Accelerator Science at Jefferson Lab and other US National Laboratories Show/Hide Abstract Particle accelerators are best known for their use in high energy and nuclear physics. They are the tools that have been used to discover almost all fundamental subatomic particles and study their properties, culminating with the discovery of the Higgs particle at the LHC. The highest energy beams are also the most precise demonstrations of special relativity ever created. Accelerator technology applies the latest advances in materials science such as high-field superconductors and nanotechnology. Accelerators, and the beams they produce, are also used in nearly every science discipline, with applications in biology, medicine, chemistry, and even nanotechnology. In this talk, I will introduce the discipline of accelerator physics, the study of the science of particle accelerators, and how we control, measure, and use the beams that they produce. We will explore the technology of particle accelerators at US national laboratories, and how physicists are working with modern laser and plasma technology to bring forth the next generation of more compact accelerators. We will also survey the broad range and impacts of accelerator technology, from free-electron laser imaging that can take movies of chemical reactions and image proteins, to proton radiotherapy that is used to cure cancers, to their surprisingly most common use -- the beam business of industrial applications, including environmental remediation and clean energy production.
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Abstract Number: ANPA2022_0147 Presenting Author: Ashok Timsina Presenter's Affiliation: University of Kentucky Title: Cell charging effect and the binding energy measurement of ions on a plastic surface in cryogenic liquids. Show/Hide Abstract To improve the present sensitivity limit of the neutron electric dipole moment (nEDM) from 1.8�10^(-26) e.cm to ~3�10^(-28) e.cm, the nEDM@SNS experiment plans to use a cryogenic technique. In this experiment, the central part of apparatus consists of two coated PMMA cells which are sandwiched between grounded and high voltage electrodes. To achieve such a precision, the externally applied electric field has need to be stable at the 1% level over a time period of ~100 s. During this experiment, several sources of ambient ionizing radiation generate charged particles in the cryogenic liquid. These ionized charges are adsorbed on the cell walls. As a result, an opposing static electric field is generated, which will impact the stability of the electric field. Therefore, we at the University of Kentucky have devised a compact test setup to study the behavior of ions inside cryogenic liquids using a scaled-down version of the nEDM cell and the electrodes. In our setup, ion-electron pairs are generated by ionizing the nitrogen (helium) with a 137Cs source and the electro-optic Kerr effect is utilized to understand the cell charging effects within dummy measurement cell. We are in the process of developing a new method to measure the binding energy of the ions bonded on PMMA. The determination of the binding energy can potentially reduce the data taking time of the nEDM@SNS experiment if partial field reversal is sufficient. Results on the charging effect and the preliminary measurements of the binding energy will be presented.
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Abstract Number: ANPA2022_0154 Presenting Author: Bishnu Datt Pandey Presenter's Affiliation: Hampton University Title: Spectroscopic study of a possible Lambda-nn resonance and a pair of Sigma-NN states using the (e,e'K+) reaction with a tritium target Show/Hide Abstract The E12-17-003 Experiment was carried out successfully at Jefferson lab in 2018 using a pressurized tritium target. By utilizing the Hall A high resolution spectrometers and the 3H(e,e�K+)?nn reaction, enhancements which may corresponds to the possible ?nn resonance and a pair of ?NN sate were observed with an energy resolution of 1.21 MeV (?), although the greater statistics are required to make the definite identifications. The experimentally measured ?nn state can provide a unique constraints in determining the ?n interaction for which no scattering data exist. In addition, although bound A = 3 and 4 ? hypernuclei have been predicted, only an A = 4 ? hypernucleus (4?He) was experimentally observed using the (K ? , ? ? ) reaction on a 4He target. The bound ?NN state is possibly a ?^{0}nn state, although this has to be confirmed by future experiments. This presentation will give description of this experiment, its analysis, and results.
Bishnu Pandey on behalf of Jefferson Lab hypernuclear collaboration.
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Abstract Number: ANPA2022_0155 Presenting Author: Puspa Pandey Presenter's Affiliation: Old Dominion University, Norfolk, VA 23529, USA Title: Longitudinal Solid Polarized Target for CLAS12 Show/Hide Abstract The Run Group C suite of experiments measure multiple spin-dependent observables by scattering an 11 GeV electron beam from longitudinally polarized nucleon targets inside the CLAS12 spectrometer in Hall B at Jefferson Lab. The dynamically polarized target built for these experiments has been extensively tested by the JLab Target Group [alternatively: in the Experimental Equipment Lab] using an auxiliary 5 T magnet. I will report on the operational experience with the target, the benchmarks achieved so far (using various polarizable materials) as well as the complete target setup, experimental readiness, and its present status. Our results show that all target components work well and the project is on track for a successful run starting June 8, 2022. This work was funded in part by the National Science Foundation under contract PHY-1002462 and the US Department of Energy under contract DE-FG02-96ER40960 and contract DE-AC05-06OR23177
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