A5027350479- Neutrino Physics Research
- Dark Matter and Cosmic Phenomena
- Atomic and Subatomic Physics Research
- Nuclear Physics and Applications
- Quantum, superfluid, helium dynamics
- Particle Detector Development and Performance
- Radiation Detection and Scintillator Technologies
- Advanced X-ray and CT Imaging
- Medical Imaging Techniques and Applications
- Astrophysics and Cosmic Phenomena
- Particle physics theoretical and experimental studies
- Radiation Dose and Imaging
University of Massachusetts Amherst
2021-2024
Georgia Institute of Technology
2020-2023
Abstract The nEXO neutrinoless double beta (0 νββ ) decay experiment is designed to use a time projection chamber and 5000 kg of isotopically enriched liquid xenon search for the in 136 Xe. Progress detector design, paired with higher fidelity its simulation an advanced data analysis, based on one used final results EXO-200, produce sensitivity prediction that exceeds half-life 10 28 years. Specifically, improvements have been made understanding production scintillation photons charge as...
Liquid xenon time projection chambers are promising detectors to search for neutrinoless double beta decay (0$\nu \beta \beta$), due their response uniformity, monolithic sensitive volume, scalability large target masses, and suitability extremely low background operations. The nEXO collaboration has designed a tonne-scale chamber that aims 0$\nu \beta$ of \ce{^{136}Xe} with projected half-life sensitivity $1.35\times 10^{28}$~yr. To reach this sensitivity, the design goal is $\leq$1\%...
Neutrinoless double beta decay is one of the most sensitive probes for new physics beyond Standard Model particle physics. One isotopes under investigation <a:math xmlns:a="http://www.w3.org/1998/Math/MathML"><a:mmultiscripts><a:mi>Xe</a:mi><a:mprescripts/><a:none/><a:mn>136</a:mn></a:mmultiscripts></a:math>, which would into <b:math xmlns:b="http://www.w3.org/1998/Math/MathML"><b:mmultiscripts><b:mi>Ba</b:mi><b:mprescripts/><b:none/><b:mn>136</b:mn></b:mmultiscripts></b:math>. Detecting...
X-ray radiography offers the ability to noninvasively inspect internal structure and material composition of objects. Dual-energy allows discrimination but is limited in quantitative measurements due broad nature interrogating x-ray spectrum. Spectral detectors provide an observation not just number x rays that are transmitted through a sample also Here, experimental validations method use spectral accurately quantify uranium mass powder presented. An accurate system response model was...
Electron-neutrino charged-current interactions with xenon nuclei were modeled in the nEXO neutrinoless double-<a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mi>β</a:mi></a:math> decay detector (<c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"><c:mo>∼</c:mo><c:mn>5</c:mn></c:math> metric ton, 90% <e:math xmlns:e="http://www.w3.org/1998/Math/MathML"...
The technique of spectral radiography has been shown to accurately discriminate a material's elemental composition by using known X-ray physics. In previous work, we presented system for determining the total compositional mass UO2 powder. This is achieved with state-of-the-art pixelated spectrometer and high-fidelity physical model. Similar other radiographs, suffers from partial-volume attenuation where sample projection onto pixel only fraction area, leaving rest unattenuated. study...
Abstract We study a possible calibration technique for the nEXO experiment using 127 Xe electron capture source. is next-generation search neutrinoless double beta decay (0 νββ ) that will use 5-tonne, monolithic liquid xenon time projection chamber (TPC). The xenon, used both as source and detection medium, be enriched to 90% in 136 Xe. To optimize event reconstruction energy resolution, calibrations are needed map position- time-dependent detector response. 36.3 day half-life of its small...