University:
Boston University
Course:
CAS PY 105 | Physics 1
Academic year:

2024
Views:

153

Pages:

2
Author:

Rhianna Osborne

Research Activities MuLan Experiment at the Paul Scherrer Institut (1999-2012): Spokesman • Best ever measurement (1 ppm) of the Fermi Constant of the Weak Interactions • More than 150 citations to three principal papers • Projects Supervised 1. Design, fabrication and testing of 500 MHz Waveform digitizer for detector readout 2. Redesign of fast kicker, essential for creating pulsed beam structure (MuLan) or “muons on request” (MuCap, below) 3. Extensive beam test, commissioning and data production runs at PSI 4. Simulation of beamline and detector system 5. Analysis of Pulse Pileup, the largest systematic correction MuCap Experiment at the Paul Scherrer Institut (PSI) (2002-2013) • Best ever measurement (1 %) of the Pseudoscalar Coupling Constant of the Weak Interactions • 80 citations to two principal papers • Projects Supervised 1. Design, fabrication and testing of 500 MHz Waveform digitizer for detector readout (also used in a different mode by MuLan) 2. Redesign of fast kicker, essential for creating pulsed beam structure (MuLan, above) or “muons on request” (MuCap) 3. Data production runs at PSI 4. Independent Lifetime analysis using waveform digitizer data MuSun Experiment at the Paul Scherrer Institut (2008-) • First Precise Measurement (1.5 %) of dR , a critical low-energy constant of chiral perturbation theory • Three PhD theses: Phillips, Ibanez, Luo • Projects Supervised 1. New Waveform Digitizer (WFD) Firmware to read out signals from cryogenic TPC 2. Two range readout and pulse reconstruction - extends dynamic range of WFD for TPC signals 3. Extensive commissioning and data runs at PSI 4. Independent electron analysis using waveform digitizer data 5. Extensive GEANT Monte Carlo modeling of beam line, muon kinetics and TPC response 6. Template fitting for muon pulses in TPC 7. Development of Fast Monte Carlo for systematic error studies 8. Evaluation of numerous systematic errors Muon g-2 experiment at BNL and FNAL I have worked on the muon g-2 experiment (in one guise or another) for the past 25 years. Here is a summary of my activities over the past 10 years, on the old BNL experiment and the new one, at FNAL. • Principal author of the Final Report on the Brookhaven Experiment (2006) - more than 1000 citations to date • Principal author and analysis coordinator for muon electric dipole moment result (2009) - more than 100 citations to date • Oversaw design of GEANT4 simulation now used by FNAL experiment, combining beamline/injection and detector simulations into a single program: g2ringsim • Author of Fast Rotation Analysis Program: determines the largest systematic correction to the final result. • Working with post-doc James Mott and graduate student Nick Kinnaird on GEANE-based tracking - to determine phase space of stored muons. LArIAT experiment at FNAL: June 2016 - Present • Test Beam experiment. Characterize performance of liquid argon Time Project Chaambers (LArTPCs • Key to development of next generation neutrino detectors • Roles in Project - largely with BU undergraduates. 1. Upgrade of Time of Flight (TOF) system used in particle identification. 2. Analysis of Muon Range stack data and evaluation of detector performance. 3. Introduction of Template Pulse Fitting for photomultiplier data from TOF system and LArTPC. 4. Study of photon-electron separation algorithms for electron appearance analysis in LArTPCs.