Staff

Dissertation Defense: London Cooper-Troendle, Yale University, "First Measurement of Inclusive Muon Neutrino Charged Current Triple Differential Cross Section on Argon"

The field of accelerator neutrino experiments is entering an era of precision oscillation measurements where the remaining unknown neutrino measurements will be determined. The upcoming DUNE and Hyper-K experiments aim to determine the neutrino mass hierarchy and degree of Charge-Parity (CP) violation in the neutrino sector, providing potential insight on the matter-antimatter imbalance observed in the universe. However, these experiments require highly accurate measurements, and neutrino cross section modeling uncertainties may limit their capabilities.

Dissertation Defense: Kaicheng Li, Yale University, "Searching for the Electron Neutrino Anomaly with the MicroBooNE Experiment Using Wire-Cell Reconstruction"

The Micro Booster Neutrino Experiment (MicroBooNE) is a leading large-scale Liquid Argon Time Projection Chamber (LArTPC) experiment, designed for precision neutrino physics. The main scientific objectives of MicroBooNE include the investigation of the Low Energy Excess (LEE) observed by the MiniBooNE Experiment between 2002-2019 in the Booster Neutrino Beam (BNB) at Fermilab, the measurements of neutrino-argon interactions, and the research and development of LArTPC technology. This thesis focuses on understanding the MiniBooNE LEE through charged-current electron neutrino interactions.

Introduction to Data Analysis with Python Workshop

Python is general purpose, interpreted programming language with a rich set of scientific and mathematic modules. As an interpreted language, it trades computational speed for iterative agility. It lends itself particularly well to the task of preparing raw data and performing exploratory analysis. This workshop will introduce participants to data analysis using Jupiter and Python, Numpy, and Pandas. Prior experience with Python is useful but not essential.
Led by Vincent Balbarin, Research Computing Specialist, Wright Lab & YCRC

WIDG Seminar: Will Tyndall, Yale, “Nearfield to Farfield Methods for Drone Beam Mapping”

Extracting cosmological 21 cm emission from the radio foregrounds which dominate requires precision calibration, including sub-percent measurements of the complex instrument beam. 21 cm cosmology experiments are typically driven to be compact transit interferometers with poor point-source sensitivity, and have found it difficult to constrain the beam shape to this precision with sky data alone. A technique that has been developed and demonstrated by multiple groups to address this is to transmit a calibrated RF signal from a drone into the telescope to measure the beam pattern.

WIDG Seminar: Evan Craft, Yale, “Beautiful and Charming Energy Correlators”

Understanding the detailed structure of energy flow within jets, a field known as jet substructure, plays a central role in searches for new physics, and precision studies of QCD. In this talk, I will discuss how reformulating jet susbtructure in terms of correlations of energy flow can be used to provide new insights into hadronization and intrinsic mass effects before confinement. In particular, I will show how energy correlators manifest the long-sought-after “dead-cone” effect of fundamental QCD.

NPA Seminar: Cyndia Yu, Stanford University, “The Microwave SQUID Multiplexer for Cosmic Microwave Background Measurements”

I will present the development and demonstration of the microwave SQUID multiplexer for cosmic microwave background observatories and discuss some of the science enabled by these large-scale focal planes. As CMB experiments become ever more sensitive, devising methods to maximize detector count will become ever more urgent. The microwave SQUID multiplexer (umux) enables multiplexing factors in the 100s or even 1000s by coupling each detector to a unique superconducting microwave resonator.

WIDG Seminar: Glenn Richardson, Yale, “Searching for the Majorana Nature of the Neutrino with nEXO"

One of the most intriguing puzzles in physics is the mechanism by which the neutrino derives its mass. A possible solution is given by a Majorana mechanism wherein the neutrino is its own anti-particle. If this were the case, the neutrino would be the first known fundamental particle to be Majorana, and could provide a pathway for leptogenisis as well as a possible explanation for our matter dominated universe. A simple and direct method to probe for this mass mechanism is by searching for the hypothetical decay process called neutrinoless double beta decay.

NPA Seminar: Andrew Mastbaum, Rutgers University, “Xenon-doped liquid argon TPCs as a neutrinoless double beta decay platform”

Searches for neutrinoless double-beta decay (NLDBD) continue to expand our understanding of the lepton sector, with several promising experimental paths toward increased sensitivity. We have considered the possible reach of a large-scale deep-underground LArTPC experiment doped with NLDBD candidate isotope xenon, and the challenges this approach would entail. In this talk, we will review the essential design requirements, background mitigations, and several open R&D questions relevant to such a detector, and discuss the potential sensitivity.

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