Name: Nuclear Data Week 2025
Start: 2026-01-06T08:00:00-05:00
End: 2026-01-09T18:00:00-05:00
Location: Building 555, Hamilton Conference Room

Nuclear Data Week 2025

from Tuesday 6 January 2026 (08:00) to Friday 9 January 2026 (18:00)

Monday 5 January 2026
Tuesday 6 January 2026

09:00 NDAG
NDAG
09:00 - 11:00
11:00 AMWG
AMWG
11:00 - 12:30
Contributions

11:00 Opening Remarks - Jennifer Alwin (Los Alamos National Laboratory)

11:05 TSL Uncertainties - Vaibhav Jaiswal (Institut de Radioprotection et de Sûreté Nucléaire (IRSN))

11:20 Processing Intercomparison - Vaibhav Jaiswal (Institut de Radioprotection et de Sûreté Nucléaire (IRSN))

11:35 Intercomparison Discussion/FY26 Tasks

12:20 Summary of Action Items/topics for next AMWG meeting in March - Jennifer Alwin (Los Alamos National Laboratory)
12:30 Lunch
Lunch
12:30 - 13:30
13:30 Welcome - Martin Schoonen (BNL) David Brown (NNDC-BNL)
Welcome
- Martin Schoonen (BNL)
- David Brown (NNDC-BNL)
13:30 - 13:35
13:35 CSEWG 101 - David Brown (NNDC-BNL)
CSEWG 101
- David Brown (NNDC-BNL)
13:35 - 13:45
13:45 ENDF Library Update - Gustavo Nobre (BNL)
ENDF Library Update
- Gustavo Nobre (BNL)
13:45 - 14:00
14:00 R-Matrix Meeting Announcement - Marco Pigni (ORNL)
R-Matrix Meeting Announcement
- Marco Pigni (ORNL)
14:00 - 14:05
14:05 JEFF-4.0 - Antonio Jimenez-Carrascosa (OECD-NEA)
JEFF-4.0
- Antonio Jimenez-Carrascosa (OECD-NEA)
14:05 - 14:30
14:30 Fission Products Yields and Decay Data
Fission Products Yields and Decay Data
14:30 - 17:10
Contributions

14:30 Update on the FY compilation effort at BNL - Andrea Mattera (BNL)

14:50 LANL FPY Summary - Amy Lovell (Los Alamos National Laboratory)

15:10 Updating GEANIE Experimental Data by Evaluated Fission Product Yields, and Los Alamos CoH-based Evaluation (LACE) Framework - Toshihiko Kawano (Los Alamos National Laboratory)

15:30 LLNL FPY Modeling and Evaluation - Ramona Vogt Ramona Vogt (LLNL and UC Davis)

16:10 Fission product yield data for basic physics research and applications - Anton Tonchev (LLNL)

16:30 Nuclide Inventory Sensitivity to a Fine Resolution of Fast-Energy Fission Product Yields - Friederike Bostelmann (Oak Ridge National Laboratory) Marco Pigni (ORNL)
Wednesday 7 January 2026
08:00
08:00 - 12:00
Contributions

08:00 Energy dependent fission yield covariance - Wim Haeck (LANL)

08:10 Disallowing interpolation on the current fission product yield data - Wim Haeck (LANL)

08:20 Standardisation of reaction identifiers for GNDS and linking to ENDF MT nomenclature. - Wim Haeck (LANL)

08:30 TSL Format discussions - Chris Chapman (Oak Ridge National Laboratory)

08:40 Depletion Data (or the Lack Thereof) in ENDF Data Files - Charles Wemple (Studsvik Scandpower Inc.)

08:50 Minor ENDF manual changes - David Brown (NNDC-BNL) Dorothea Wiarda (ORNL) Gustavo Nobre (BNL)

09:00 File 32/File 33 covariance mixing - Dorothea Wiarda (ORNL) Jordan McDonnell (UT-Battelle) Marco Pigni (ORNL)

09:10 Unifying the ENDF free text documentation formats - David Brown (NNDC-BNL)

09:20 NDEX - Jason Thompson (NNL-KAPL)

09:40 NJOY - Wim Haeck (LANL)

10:20 AMPX - Jordan McDonnell (UT-Battelle)

10:40 FUDGE - Caleb Mattoon (Lawrence Livermore National Lab)

11:00 ADVANCE - Coles Rebecca (BNL)

11:20 SAMMY - Dorothea Wiarda (ORNL)

11:40 GNDS Updates - Caleb Mattoon (Lawrence Livermore National Lab)
12:00 Lunch
Lunch
12:00 - 13:30
13:30 Measurements
Measurements
13:30 - 17:40
Contributions

13:30 APS-DNP Announcement - Ramona Vogt Ramona Vogt (LLNL and UC Davis)

13:35 Measurements with DICER at LANSCE - Thanos Stamatopoulos (Los Alamos National Laboratory)

13:50 Update on Recent Cl-35(n,p) LENZ Measurements into the RRR - Kenneth Hanselman (LANL)

14:05 Recent measurements of 235U, 238U, 239Pu, and 240Pu photofission cross sections in the region of the Giant Dipole Resonance - Anton Tonchev (LLNL)

14:25 Thermal Transmission measurements - Kemal Ramic (Oak Ridge National Lab)

14:40 Recent Work on Neutron Standards - Allan Carlson (NIST)

15:00 Recent Zr-88 and Xe-135 measurements - Will Flanagan (University of Texas at Austin)

15:30 Hafnium High-Energy Quasi Differential Scattering - Adam Daskalakis (Naval Nuclear Laboratory)

15:50 Zr measurements at GELINA - Klaus Guber (Oak Ridge National Laboratory)

16:05 Nuclear Data measurements at RPI - Yaron Danon (Rensselaer Polytechnic Institute)

16:25 Recent Results from GENESIS - Bethany Goldblum (Lawrence Berkeley National Laboratory) Thibault Laplace (University of California Berkeley)

16:45 The present status of the EXFOR project - Boris Pritychenko (NNDC, BNL)

17:00 Thermal scattering measurements from graphite - Kemal Ramic (Oak Ridge National Lab)

17:15 Nuclear data measurements of Ni and Cr capture gamma-rays - Shuya Ota (Brookhaven National Laboratory)

17:30 Mn, Cu, Fe capture gammas at thermal - Marian Jandel (University of Massachusetts, Lowell, MA)
Thursday 8 January 2026
08:00 Covariances
Covariances
08:00 - 12:00
Contributions

08:00 Introduction - Denise Neudecker (Los Alamos National Laboratory, Theoretical Division)

08:02 Ta181 Covariances and Integral Experiments - jesson hutchinson (LANL)

08:18 Neutron Data Standards: Software and Method Developments - Georg Schnabel (IAEA)

08:34 Using ML to find root causes for discrepancies in experimental data underlying the new 252Cf PFNS Standard - Denise Neudecker (Los Alamos National Laboratory, Theoretical Division)

08:50 A Data-driven Approach to Credible Uncertainty Quantification in the RRR - Vladimir Sobes (University of Tennessee)

09:06 Covariances in the URR - Cole Fritsch (UTK) Noah Walton (LANL)

09:22 Bayesian Model Mixing and the Bayesian Analysis of Nuclear Dynamics (BAND) Software Framework - Daniel Philips (U. Ohio)

09:38 The BAND approach to optical potentials - Kyle Beyer (University of Michigan)

10:04 Covariances for the LLNL Pu239 Evaluation - Andre Sieverding (LLNL)

10:20 Adjustment of Pu239 Evaluation Using Bayesian Inference - Marc Salinas

10:36 Inference of Photonuclear Theory Parameter Covariances Using ML-Enabled MCMC - Noah Walton (LANL)

10:52 Impact of cross section and fission yield uncertainties on the fuel inventory in a high temperature fluoride salt-cooled reactor - Friederike Bostelmann (Oak Ridge National Laboratory)

11:08 Gaussian Mixture Models (GMM) for data and covariance evaluations: a phonon density of states case study - Goran Arbanas (Oak Ridge National Laboratory)

11:24 Progress on Light Water TSL Covariance - Chris Chapman (Oak Ridge National Laboratory)

11:40 New LANL FPY Evaluation Covariances - Amanda Lewis (LANL)
12:00 Executive Committee Meeting
Executive Committee Meeting
12:00 - 13:40
Room: B

Lunch
Lunch
12:00 - 13:40
13:40 Evaluation (Neutrons)
Evaluation (Neutrons)
13:40 - 16:54
Contributions

13:40 Introduction - Mark Chadwick (Lanl)

13:52 Neutron standards - Allan Carlson (NIST)

14:04 New INDEN Pu-239 evaluation: Improving scattering cross sections - Roberto Capote (IAEA NDS)

14:09 Actinide nubar and PFNS evaluations - Denise Neudecker (Los Alamos National Laboratory, Theoretical Division)

14:14 New Pu-240 evaluation in the fast range - Nathan Gibson (Los Alamos National Laboratory)

14:19 URR challenges: Update to the Fe-56 evaluation - Andrej Trkov (Jozef Stefan Institute)

14:24 Updates on the 90,91Zr evaluations at RPI - Greg Siemers (Rensselaer Polytechnic Institute)

14:29 Zr-90/91 URR evaluations - Alec Golas

14:34 Recent and planned updates to neutron standards for ENDF/B-IX.0 from R-matrix evaluations - Mark Paris (LANL T-2)

14:39 n+ N-14 - Jordan McDonnell (UT-Battelle)

15:14 ORNL Cl evaluation - Marco Pigni (ORNL)

15:19 Photonuclear evaluations of major actinides - Kostas Kravvaris (LLNL)

15:24 8Be CN evaluation - Som Paneru

15:29 Impact of the temperature dependent lattice constants and extinction on keff - Kemal Ramic (Oak Ridge National Lab)

15:34 Experimentally validated machine learned potentials for next ENDF release - Kemal Ramic (Oak Ridge National Lab)

15:39 Introduction - Roberto Capote (IAEA NDS)

15:49 Panel Discussion
Friday 9 January 2026
08:00 Validation
Validation
08:00 - 12:00
Contributions

08:00 Welcome - Michael Zerkle (Bettis Atomic Power Laboratory) Michael Zerkle (Naval Nuclear Laboratory)

08:05 LANL Validation Results of Recently Released Libraries - Noah Kleedtke (LANL)

08:20 NNL Validation Testing - Linden Cotchen (NNL)

08:35 ORNL Validation Testing - Travis Greene (ORNL)

08:50 LLNL Testing of ENDF/B-VIII.1 with the COG Validation Suite - Jesse Norris (Lawrence Livermore National Laboratory)

09:05 AWE Validation Testing - Mark Cornock (AWE.Plc)

09:20 Nuclear Data Testing at Studsvik Scandpower - Charles Wemple (Studsvik Scandpower Inc.)

09:35 MCNP6.3 and OpenMC testing of the ENDF/B-VIII.1 Graphite TSLs using FUND-ORELA-ACC-GRAPH-PNSDT-001 benchmark - Kemal Ramic (Oak Ridge National Lab)

09:50 NCSU/ORELA Neutron Thermalization in Graphite ICSBEP Benchmark - LLNL COG Results - David Heinrichs (LLNL) Soon Kim (Lawrence Livermore National Laboratory)

10:05 MC21 Testing of the ENDF/B-VIII.1 Graphite TSLs in the ORELA PNSDT Benchmark - Jason Thompson (NNL-KAPL) Jason Thompson (NNL)

10:30 TSL Validation using HTR-PROTEUS - John Bess (JFoster & Associates, LLC)

10:45 Update on New ICSBEP Evaluations - Catherine Percher (Lawrence Livermore National Laboratory)

11:00 Data Testing of ENDF/B-VIII.2 Beta Chlorine with ICSBEP - Eric Aboud (LLNL)

11:15 Source Modelling in the LLNL Pulsed Spheres - Tim Gaines (AWE Plc)

11:30 Benchmarking and Validation of Gamma-Producing Nuclear Data For Well Logging - Bor Kos (Baker Hughes)

11:45 Potential for Validation Data from Radioisotope Production at ORNL - William Marshall (Oak Ridge National Laboratory)
12:00 Lunch
Lunch
12:00 - 13:00
13:00 Validation
Validation
13:00 - 13:15
Contributions

13:00 First Look at use of PARADIGM for ND Validation - Peter Brain (LANL)
13:15 Inventory Library
Inventory Library
13:15 - 15:00
Contributions

13:15 Welcome - Andre Sieverding (LLNL)

13:25 Activation Library Use in Target Design and Analysis for Radioisotope Production at ORNL - William Marshall (Oak Ridge National Laboratory)

13:40 Nuclide inventory validation: effect of nuclear data libraries - Germina Procop (ORNL)

13:55 Impact of cross section and fission yield uncertainties on fuel inventory for a molten salt fast reactors - Germina Procop (ORNL)

14:10 Reaction theory and workflow developments at LLNL - Jeff Berryman (LANL)

14:25 Reaction theory developments at LANL - Amy Lovell (Los Alamos National Laboratory)

14:40 Discussion

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