Reactor Graphite Workshop

8 Jul 2025, 08:00 → 9 Jul 2025, 18:00 US/Eastern

Room B (Berkner Hall (Bldg. 488))

 

Non-U.S. citizens must complete an additional Brookhaven Lab Guest Form and be approved in the Guest Information System (GIS) if they would like to attend this meeting. This applies to both in-person and remote attendees!

If you have a current Brookhaven Lab guest appointment and a valid BNL Guest Number or you have a pending Guest Registration (GR) Number, it is not necessary to complete the additional Brookhaven Lab Guest Form again.

Registration Deadlines:

• US citizens: June 8, 2025
• non-US citizens: June 8, 2025

 

The agenda can be found here.  

agenda_v5.pdf

Tuesday 8 July

09:00 → 09:25 Welcome

09:00 BNL Welcome

Speaker: Alejandro Sonzogni (BNL)

09:10 Workshop Goals

Speakers: Dave Brown, Gustavo Nobre (BNL)

ReGra_Workshop_Goals.pdf

09:25 → 10:25 Material Characterization

09:25 Qualifying Graphite for Reactor Applications: A Materials Perspective

Speaker: Dominic Piedmont (BNL)

Qualifying Graphite for Reactor Applications.pptx

09:55 Discussion about material characterization

Speaker: All

10:25 → 10:40 Coffee break

10:40 → 12:00 Users' Perspectives

10:40 NNL Perspective of Reactor-grade Graphite

Speaker: Mike Zerkle (NNL)

NNL Perspective on Reactor-grade Graphite.pptx

11:00 Updates to the HTR-PROTEUS HALEU Benchmark Using Modern Analysis Methodologies

Speakers: Javier Ortensi (INL), John Bess (INL), Volkan Seker (INL)

Update_HTR-PROTEUS-Benchmark.pdf

Update_HTR-PROTEUS-Benchmark.pptx

11:30 Thermal Scattering Law Impact on BWXT Advanced Nuclear Reactor

Speakers: Chase Lawing (BWXT), Gabriel Lentchner (BWXT), Matthew Nash (BWXT)

12:00 → 13:20 Lunch

13:20 → 13:50 Users' Perspectives

13:20 Discussion about users' perspectives

Speaker: All

13:50 → 15:10 Differential Data, Modeling and Evaluation

13:50 Physics of Phonons in Graphite: Integrating Inelastic Neutron Scattering Measurements and First-Principles Calculations

Speaker: Iyad Al-Qasir (ORNL)

14:20 Machine learned atomistic modeling of porosity in nuclear graphite

Speaker: Kemal Ramic (ORNL)

14:40 Investigation and Evaluation of Thermal Neutron Scattering in Nuclear Graphite

Speaker: Ayman Hawari (NCSU/TAMU)

Hawari_ReGra_Presentation-07082025 - Copy-DESKTOP-099SDNI.pdf

15:10 → 15:30 Coffee break

15:30 → 17:20 Differential Data, Modeling and Evaluation

15:30 Overview of historical and new transmission measurements of nuclear graphite

Speaker: Chris Chapman (ORNL)

regra_transmission_v2p0.pptx

15:50 Investigating the Impact of Fast Neutron Radiation Damage on Graphite Lattice Dynamics

Speaker: Iyad Al-Qasir (ORNL)

16:10 Discussion about modeling and evaluation approaches

Speaker: All

Wednesday 9 July

09:00 → 10:30 Validation

09:00 Integral Benchmarks for Graphite TSL Validation

Speaker: Catherine Percher (LLNL)

ReGra-Benchmarks-CPercher.pptx

09:30 Deimos and Graphite TSLs

Speaker: Nick Thompson (LANL)

Deimos and Graphite TSLs_small3.pptx

09:50 Modernization of Historical Graphite Measurements and Techniques

Speaker: Benjamin Wang (RPI)

10:10 ORNL testing of multiple graphite benchmarks

Speaker: Travis Greene (ORNL)

10:30 → 10:50 Coffee break

10:50 → 12:10 Validation

10:50 Benchmark and Validation of Thermal Neutron Scattering in Nuclear Graphite

Speaker: Ayman Hawari (NCSU/TAMU)

Hawari_ReGra_Presentation-07092025.pdf

11:20 Discussion about Validation

Speaker: All

11:30 → 11:40 Group picture

12:10 → 13:30 Lunch

13:30 → 15:30 Discussions

13:30 Discussion about validated graphite library requirements to fulfill user needs

Speaker: All

14:30 Discussion about path forward

Speaker: All

15:30 → 16:00 Coffee break

16:00 → 17:20 Discussions

16:00 Discussion about action items

Speaker: All

17:20 → 17:30 Closing

17:20 Workshop closing

Speakers: Dave Brown (BNL), Gustavo Nobre (BNL)