Recent Talks and Notes

Recent seminars, tutorials, technical notes, and collaboration updates across Geant4, GEMC, CLAS12 simulation, and detector work.

Title Format Occasion Date
Streaming Clas12 Detectors PDF EPSCI SRO meeting Sept 2026
Clas12 simulations & GEMC PDF CLAS Collaboration Meeting, Newport News, Virginia June 2026
Real Run Number simulations for CLAS12 PDF CLAS12 Technical Note October 2025
Geant4 at Jefferson Lab PDF Graduate Student and PostDoc Association Lunch Seminar September 2025
Geant4 Electromagnetic Physics 1 PDF Geant4 tutorial course, Newport News, Virginia August 2025
Geant4 Hadronic Physics 1 PDF Geant4 tutorial course, Newport News, Virginia August 2025



Selected Papers

Representative papers connected to my simulation, detector, and meson electro-production work.

Title PDF Journal
Geant4 Monte-Carlo (GEMC) A database-driven simulation program PDF EPJ Web of Conferences 295, 05005 (2024)
The CLAS12 Geant4 simulation PDF Nucl.Instrum.Meth.A 959 (2020)
Measurement of the beam spin asymmetry of e p → e′p′η in the deep-inelastic regime with CLAS PDF Phys.Rev.B 789 (2019)
The CLAS12 Low Threshold Cherenkov detector PDF Nucl.Instrum.Meth.A 957 (2020)
Enhanced UV light detection using a p-terphenyl wavelength shifter PDF Nucl.Instrum.Meth.A 870 (2017)
Beam-spin asymmetries from semi-inclusive pion electroproduction PDF Phys.Rev.D 89 (2014)
Measurement of the N⟶Δ+(1232) transition at high momentum transfer by π⁰ electro-production PDF Phys. Rev. Lett. 97 (2006)

All research papers are listed in Maurizio Ungaro’s INSPIRE profile.



Physics Presentations

Selected presentations:

Title Format Occasion Date
electro-production of π⁰ in the resonance region at high Q² with CLAS PDF CLAS Collaboration Meeting, Newport News, Virginia Nov 2016
Dark Matter: Search for Heavy Photon at JLab PDF, PPTX JLab Seminar June 2011
Electromagnetic N → N* Excitations PDF Photonuclear Reactions, Gordon Research Conference, Tilton, NH August 2010

All physics presentations are listed in Physics Talks and Presentations.



Low Threshold Cherenkov Counter (LTCC)

Selected talks related to LTCC operation, calibration, and detector performance.

Title Format Occasion Date
CLAS12 Cherenkovs For PID PDF Workshop on kaons with CLAS12, Frascati 12/2022
LTCC Review PDF Detector Review 06/2015

All LTCC presentations are listed in Low Threshold Cherenkov Counter Talks.



Geant4

Selected tutorials and presentations for Geant4 users at JLab and related workshops.

Title Format Occasion Date
Geant4 at Jefferson Lab PDF Graduate Student and PostDoc Association Lunch Seminar September 2025
Geant4 Analysis Tools PDF Geant4 tutorial course, Newport News, Virginia August 2025
Geant4 Visualization PDF Geant4 tutorial course, Newport News, Virginia August 2025

All Geant4 presentations are listed in Geant4 Talks and Tutorials.



GEMC

Selected talks on GEMC, CLAS12 simulations, and database-driven simulation workflows.

Title Format Occasion Date
Clas12 simulations & GEMC PDF CLAS Collaboration Meeting, Newport News, Virginia June 2026
Run Dependent Simulations PDF CLAS Collaboration Meeting, Newport News, Virginia March 2025
GEMC: a database driven Monte-Carlo simulation program PDF CHEP 2023, Norfolk, Virginia 05/2023
MC Streaming PDF Workshop VIII on Streaming Readout April 2021
Beamline Studies 2017 Summary PDF Technical Control Board Meeting Sept 2017

All GEMC presentations are listed in GEMC Talks and Presentations.



Open Science Grid

Presentations on CLAS12 simulation workflows and distributed computing resources.

Title Format Occasion Date
CLAS12 on Open Science Grid Status PDF CLAS12 Collaboration Meeting, Newport News, Virginia March 2025
Submitting jobs via the OSG portal PDF CLAS Collaboration Meeting, Newport News, Virginia June 2024
CLAS12 simulations on OSG PDF CLAS Collaboration Meeting, Newport News, Virginia Nov 2023
CLAS12 on OSG: Images, Portal and CPU Resources PDF CLAS Collaboration meeting June 2021

All OSG presentations are listed in OSG Talks and Presentations.



Selected CLAS/CLAS12 Technical Notes

Selected technical notes for CLAS and CLAS12 detector and simulation work.

Title PDF Date
Real Run Number simulations for CLAS12 PDF 2025
New CAD / Mirrors Import Mechanisms in GEMC PDF 2024
Importing the downstream beamline from engineering models PDF 2024
Background Merging Mechanism in GEMC PDF 2018
Study of the electromagnetic background rates in CLAS12 PDF 2017
Meson electro-production Radiative Corrections based on Exclurad PDF 2010
g11 data processing PDF 2005
Procedure for Drift Chamber Inefficiencies PDF 2003

All technical CLAS and CLAS12 notes are listed in CLAS and CLAS12 Technical Notes.