25 citations · 142 across the 22 of their papers we have counts for
25 papers
Photonuclear Neutron Production in OpenMC: Verification Against MCNPX, FLUKA, and a First-Collision Analytical Solution
Lorenzo Loi, Andrea Missaglia, Carolina Introini +4
The modeling of photonuclear reactions is increasingly important for applications involving high-energy photon fields, including accelerator-driven neutron sources, radiation shiel…
Machine Learning on Heterogeneous, Edge, and Quantum Hardware for Particle Physics (ML-HEQUPP)
Julia Gonski, Jennifer Ott, Jenni Ott +129
The next generation of particle physics experiments will face a new era of challenges in data acquisition, due to unprecedented data rates and volumes along with extreme environmen…
Identifying Neutron Sources using Recoil and Time-of-Flight Spectroscopy
David Breitenmoser, Ricardo Lopez, Shaun D. Clarke +1
Neutron-source identification is central to nuclear physics and its applications, from planetary science to nuclear security, yet direct source discrimination from measured neutron…
Multiplicity counting using organic scintillators to distinguish neutron sources: An advanced teaching laboratory
Flynn B. Darby, Michael Y. Hua, Oskari V. Pakari +2
In this advanced instructional laboratory, students explore complex detection systems and nondestructive assay techniques used in the field of nuclear physics. After setting up and…
Instrumentation for correlated prompt - emission studies in coincidence with fission fragments
S. Marin, I. Tolstukhin, M. B. Oberling +9
Recent theoretical and experimental results have brought renewed interest and focus on the topic of fission fragment angular momentum. Measurements of neutrons and rays in coin…
Nonproliferation and fusion power plants
Michael Y. Hua, Sachin S. Desai, Amy C. Roma +3
This is an abridged abstract; please see the full paper. This paper evaluates whether the nuclear nonproliferation regime applies to fusion power plants and finds that, legally, th…
Correlations between energy and -ray emission in
Nathan P. Giha, Stefano Marin, James A. Baker +15
We study -ray emission following over an incident neutron energy range of MeV. We present the first experimental evidence for po…
Directional-dependence of the event-by-event neutron- multiplicity correlations in Cf(sf)
Stefano Marin, Eoin P. Sansevero, M. Stephan Okar +6
We differentiate the event-by-event n- multiplicity data from \ce{^{252}Cf}(sf) with respect to the energies of the emitted particles as well as their relative angles of emissio…
Measurements of neutron fields in a wide energy range using multi-foil activation analysis
D. Chiesa, C. Cazzaniga, M. Nastasi +6
An accurate characterization of the neutron fields at spallation sources is crucial for many applications based on neutron irradiations, such as radiation damage tests that need a…
Generalization of the Maier-Leibniz Doppler-Shift Method for Gamma-Ray Correlations in Fission
Stefano Marin, M. Stephan Okar, Shaun D. Clarke +1
The Maier-Leibniz Doppler-Shift technique is the most popular and accurate technique used in fission experiments to separate the yield of gamma rays from each of the two fission fr…
Structure in the Event-by-Event Energy-Dependent Neutron-Gamma Multiplicity Correlations in (sf)
Stefano Marin, Mustapha Stephan Okar, Eoin P. Sansevero +13
The emission of neutrons and gamma rays by fission fragments reveal important information about the properties of fragments immediately following scission. The initial fragment pro…
On the Feynman-alpha Method for Reflected Fissile Assemblies
Michael Y. Hua, Jesson D. Hutchinson, George E. McKenzie +2
The Feynman-alpha method is a neutron noise technique that is used to estimate the prompt neutron period of fissile assemblies. The method and quantity are of widespread interest i…
Fast Rossi-alpha Measurements of Plutonium using Organic Scintillators
M. Y. Hua, C. A. Bravo, A. T. MacDonald +7
In this work, Rossi-alpha measurements were simultaneously performed with a He-based detection system and an organic scintillator-based detection system. The assembly is 15 kg…
Rossi-alpha Uncertainty Quantification by Analytic, Bootstrap, and Sample Methods to Inform Fitting Best Practices
M. Y. Hua, C. A. Bravo, R. M. Marchie +3
The prompt neutron period (the negative reciprocal of the prompt neutron decay constant) can be estimated using the Rossi-alpha technique that is predicated on fitting Rossi-alpha…
Measured Nondestructive Assay of Np Using Organic Scintillators and Active Neutron Multiplicity Counting
Michael Y. Hua, Thomas A. Plummer, Jesson D. Hutchinson +3
The purpose of nondestructive assay in the context of nuclear safeguards is to precisely verify the declared mass of a sample of nuclear material in a noninhibitive amount of time.…
A Hierarchical Bayesian Approach to Neutron Spectrum Unfolding with Organic Scintillators
Haonan Zhu, Yoann Altmann, Angela Di Fulvioand Stephen McLaughlin +2
We propose a hierarchical Bayesian model and state-of-art Monte Carlo sampling method to solve the unfolding problem, i.e., to estimate the spectrum of an unknown neutron source fr…
Event-by-Event Multiplicity Correlations in Cf(sf)
Stefano Marin, Vladimir A. Protopopescu, Ramona Vogt +7
Excited nuclear fragments are emitted during nuclear fission. The de-excitation of these fission fragments takes place as sequential emission of neutrons followed by photons. A cor…
High resolution measurement of tagged two-neutron energy and angle correlations in Cf-252(sf)
P. F. Schuster, M. J. Marcath, S. Marin +9
Background: Spontaneous fission events emit prompt neutrons correlated with one another in emission angle and energy. Purpose: We explore the relationship in energy and angle betwe…
Characterizing Subcritical Assemblies with Time of Flight Fixed by Energy Estimation Distributions
Mateusz Monterial, Peter Marleau, Sara Pozzi
We present the Time of Flight Fixed by Energy Estimation (TOFFEE) as a measure of the fission chain dynamics in subcritical assemblies. TOFFEE is the time between correlated gamma…
Application of Bayes' theorem for pulse shape discrimination
Mateusz Monterial, Peter Marleau, Shaun Clarke +1
A Bayesian approach is proposed for pulse shape discrimination of photons and neutrons in liquid organic scinitillators. Instead of drawing a decision boundary, each pulse is assig…
Single-View 3D Reconstruction of Correlated Gamma-Neutron Sources
Mateusz Monterial, Peter Marleau, Sara A. Pozzi
We describe a new method of 3D image reconstruction of neutron sources that emit correlated gammas (e.g. Cf-252, Am-Be). This category includes a vast majority of neutron sources i…
Multiplication and Presence of Shielding Material from Time-Correlated Pulse-Height Measurements of Subcritical Plutonium Assemblies
Mateusz Monterial, Peter Marleau, Marc Paff +2
We present the results from the first measurements of the Time-Correlated Pulse-Height (TCPH) distributions from 4.5 kg sphere of -phase weapons-grade plutonium metal in five co…
Classification with Asymmetric Label Noise: Consistency and Maximal Denoising
Gilles Blanchard, Marek Flaska, Gregory Handy +2
In many real-world classification problems, the labels of training examples are randomly corrupted. Most previous theoretical work on classification with label noise assumes that t…
Two-point theory for the differential self-interrogation Feynman-alpha method
Johan Anderson, Dina Chernikova, Imre Pazsit +2
A Feynman-alpha formula has been derived in a two region domain pertaining the stochastic differential self-interrogation (DDSI) method and the differential die-away method (DDAA).…