Update PBMR-400 inputs/outputs

full_core_equil/pbmr400.v7.1-252.t6-depl.out filter=lfs diff=lfs merge=lfs -text

full_core_equil_benchmark/pbmr400.v7.1-252.t6-depl.out filter=lfs diff=lfs merge=lfs -text

full_core_fresh/pbmr400.v7.1-252.t6-depl.out filter=lfs diff=lfs merge=lfs -text

slice_equil/pbmr400_slice.v7.1-252.t6-depl.out filter=lfs diff=lfs merge=lfs -text

slice_equil_benchmark/pbmr400_slice.v7.1-252.t6-depl.out filter=lfs diff=lfs merge=lfs -text

slice_fresh/pbmr400_slice.v7.1-252.t6-depl.out filter=lfs diff=lfs merge=lfs -text

full_core_equil_benchmark/pbmr400.v7.1-252.t6-depl.flux_time00000.3dmap filter=lfs diff=lfs merge=lfs -text

full_core_fresh/pbmr400.v7.1-252.t6-depl.fission_density_time00000.3dmap filter=lfs diff=lfs merge=lfs -text

full_core_fresh/pbmr400.v7.1-252.t6-depl.flux_time00000.3dmap filter=lfs diff=lfs merge=lfs -text

full_core_equil_benchmark/pbmr400.v7.1-252.t6-depl.fission_density_time00000.3dmap filter=lfs diff=lfs merge=lfs -text

slice_equil/pbmr400_slice.v7.1-252.t6-depl.mix11110.f33 filter=lfs diff=lfs merge=lfs -text

slice_equil_benchmark/pbmr400_slice.v7.1-252.t6-depl.mix11130.f33 filter=lfs diff=lfs merge=lfs -text

slice_fresh/pbmr400_slice.v7.1-252.t6-depl.mix0101.f33 filter=lfs diff=lfs merge=lfs -text

slice_equil_benchmark/pbmr400_slice.v7.1-252.t6-depl.system.f33 filter=lfs diff=lfs merge=lfs -text

slice_fresh/pbmr400_slice.v7.1-252.t6-depl.system.f33 filter=lfs diff=lfs merge=lfs -text

slice_equil/pbmr400_slice.v7.1-252.t6-depl.mix11120.f33 filter=lfs diff=lfs merge=lfs -text

slice_equil_benchmark/pbmr400_slice.v7.1-252.t6-depl.mix11140.f33 filter=lfs diff=lfs merge=lfs -text

slice_equil_benchmark/pbmr400_slice.v7.1-252.t6-depl.mix11150.f33 filter=lfs diff=lfs merge=lfs -text

slice_equil_benchmark/pbmr400_slice.v7.1-252.t6-depl.mix11110.f33 filter=lfs diff=lfs merge=lfs -text

slice_equil/pbmr400_slice.v7.1-252.t6-depl.mix11130.f33 filter=lfs diff=lfs merge=lfs -text

slice_equil/pbmr400_slice.v7.1-252.t6-depl.mix11140.f33 filter=lfs diff=lfs merge=lfs -text

slice_equil/pbmr400_slice.v7.1-252.t6-depl.system.f33 filter=lfs diff=lfs merge=lfs -text

slice_equil/pbmr400_slice.v7.1-252.t6-depl.mix11150.f33 filter=lfs diff=lfs merge=lfs -text

slice_equil_benchmark/pbmr400_slice.v7.1-252.t6-depl.mix11120.f33 filter=lfs diff=lfs merge=lfs -text

slice_equil/pbmr400_slice.v7.1-252.t6-depl.f71 filter=lfs diff=lfs merge=lfs -text

slice_equil_benchmark/core_average_decay_1MTIHM.f71 filter=lfs diff=lfs merge=lfs -text

slice_equil_benchmark/pbmr400_slice.v7.1-252.t6-depl.f71 filter=lfs diff=lfs merge=lfs -text

slice_fresh/pbmr400_slice.v7.1-252.t6-depl.f71 filter=lfs diff=lfs merge=lfs -text

slice_equil_benchmark/core_average_decay_1MTIHM.ii.json filter=lfs diff=lfs merge=lfs -text

slice_equil_benchmark/pbmr400_slice.v7.1-252.t6-depl.ii.json filter=lfs diff=lfs merge=lfs -text

slice_equil/core_average_decay_1MTIHM.ii.json filter=lfs diff=lfs merge=lfs -text

slice_equil/pbmr400_slice.v7.1-252.t6-depl.ii.json filter=lfs diff=lfs merge=lfs -text

- PBMR Coupled Neutronics/Thermal-Hydraulics Transient Benchmark: The PBMR-400 Core Design - Volume 1: The Benchmark Definition, [NEA/NSC/DOC(2013)10](https://www.oecd-nea.org/jcms/pl_19318/pbmr-coupled-neutronics/thermal-hydraulics-transient-benchmark-the-pbmr-400-core-design-volume-1-the-benchmark-definition?details=true), OECD/NEA (2013)

Results obtained using these models are summarized in [ORNL TM report ORNL/TM-2020/1886](https://info.ornl.gov/sites/publications/Files/Pub150728.pdf). Please provide the following reference when using the models:

Results obtained using these models are summarized in [ORNL TM report ORNL/TM-2020/1886](https://info.ornl.gov/sites/publications/Files/Pub150728.pdf). Please provide the following references when using the models:

> S. E. Skutnik and W. A. Wieselquist, "Assessment of ORIGEN Reactor Library Development for Pebble-Bed Reactors Based on the PBMR-400 Benchmark", [ORNL/TM-2020/1886](https://info.ornl.gov/sites/publications/Files/Pub150728.pdf), Oak Ridge National Laboratory, Oak Ridge, TN (July 2021).

> [1] S. E. Skutnik and W. A. Wieselquist, "Assessment of ORIGEN Reactor Library Development for Pebble-Bed Reactors Based on the PBMR-400 Benchmark", [ORNL/TM-2020/1886](https://doi.org/10.2172/1807271), Oak Ridge National Laboratory, Oak Ridge, TN (July 2021).

>

> [2] D. Hartanto, W. A. Wieselquist , S. E. Skutnik, P. W. Gibbs (2022),"[Uncertainty Quantification of Pebble's Discharge Burnup and Isotopic Inventory Using SCALE](https://www.osti.gov/servlets/purl/1905409)," Proc. ANS Winter Meeting, Phoenix, AZ, November 13–17, 2022.

:warning: The models provided here might differ from the models used for the 

studies summarized in the report since models are updated based upon feedback. :warning:

## Content

SCALE model input and output files are provided for two levels of modeling:

- full core model 

   - With fresh fuel (initial core)

   - With equilibrium fuel compositions

- reflected axial slice 

   - With fresh fuel composition

   - With equilibrium fuel compositions (at varying axial locations)

1. **3D full core models**:

   - Fresh core: baseline benchmark case F-2 (First Core Loading) that   includes 33.3% first-core fuel pebbles (5.768% U-235 enriched) and 66.6% graphite pebbles

   - Equilibrium core: core divided into 22 axial zones and 5 radial zones, with a different fuel composition in each zone corresponding to the average compositions of fuel pebbles at different burnups within this zone. Two equilibrium core models were developed that differ in the fuel composition:

       - own-generated fuel compositions using SCALE, and

       - fuel compositions taken from the OECD/NEA benchmark (based on VSOP calculation).

2. **Axial slice models**: A slice model was developed that represents a slice through the center of the core, with axially reflective and radially vaccum boundary conditions. Two variation of this model were developed:

   - Slice through the center of the fresh core

   - Slice through axial zone 11 (axial midline) of the equilibrium core, with one fresh fuel pebble per radial zone which is depleted to the target burnup. Two different compositions are used for the non-depleted pebble:

       - own-generated fuel compositions using SCALE, and

       - fuel compositions taken from the OECD/NEA benchmark (based on VSOP calculation).

```

.

├── README.md

├── full_core

│   ├── equilibrium_core

│   │   ├── csas6

│   │   │   └── PBMR-400_csas6_v7.1-252-1137K.inp

│   │   └── t6-depl

│   │       ├── PBMR-400_t6-depl_v7.1-252-1137K.inp

│   │       ├── PBMR-400_t6-depl_v7.1-252-1200K.inp

│   │       ├── PBMR-400_t6-depl_v7.1-252-300K.inp

│   │       ├── PBMR-400_t6-depl_v7.1-252-600K.inp

│   │       └── PBMR-400_t6-depl_v7.1-252-900K.inp

│   └── initial_core

│       ├── csas6

│       │   ├── PBMR-400_csas6_v7.1-252-1137K.inp

│       │   ├── PBMR-400_csas6_v7.1-252-1200K.inp

│       │   ├── PBMR-400_csas6_v7.1-252-300K.inp

│       │   ├── PBMR-400_csas6_v7.1-252-600K.inp

│       │   └── PBMR-400_csas6_v7.1-252-900K.inp

│       └── t6-depl

│           ├── PBMR-400_t6-depl_v7.1-252-1137K.inp

│           ├── PBMR-400_t6-depl_v7.1-252-1200K.inp

│           ├── PBMR-400_t6-depl_v7.1-252-300K.inp

│           ├── PBMR-400_t6-depl_v7.1-252-600K.inp

│           └── PBMR-400_t6-depl_v7.1-252-900K.inp

└── reflected_plane

    └── equilibrium_core

        ├── csas6

        │   └── PBMR-400_csas6_v7.1-252-1137K.inp

        └── t-depl6

            ├── PBMR-400_t6-depl_v7.1-252-1137K-radZone1.inp

            ├── PBMR-400_t6-depl_v7.1-252-1137K-radZone2.inp

            ├── PBMR-400_t6-depl_v7.1-252-1137K-radZone3.inp

            ├── PBMR-400_t6-depl_v7.1-252-1137K-radZone4.inp

            └── PBMR-400_t6-depl_v7.1-252-1137K-radZone5.inp

├── full_core_equil

│   ├── pbmr400.v7.1-252.t6-depl.inp

│   └── pbmr400.v7.1-252.t6-depl.out

├── full_core_equil_benchmark

│   ├── pbmr400.v7.1-252.t6-depl.fission_density_time00000.3dmap

│   ├── pbmr400.v7.1-252.t6-depl.flux_time00000.3dmap

│   ├── pbmr400.v7.1-252.t6-depl.inp

│   └── pbmr400.v7.1-252.t6-depl.out

├── full_core_fresh

│   ├── pbmr400.v7.1-252.t6-depl.fission_density_time00000.3dmap

│   ├── pbmr400.v7.1-252.t6-depl.flux_time00000.3dmap

│   ├── pbmr400.v7.1-252.t6-depl.inp

│   └── pbmr400.v7.1-252.t6-depl.out

├── slice_equil

│   ├── core_average_decay_1MTIHM.ii.json

│   ├── pbmr400_slice.v7.1-252.t6-depl.f71

│   ├── pbmr400_slice.v7.1-252.t6-depl.ii.json

│   ├── pbmr400_slice.v7.1-252.t6-depl.inp

│   ├── pbmr400_slice.v7.1-252.t6-depl.out

│   └── pbmr400_slice.v7.1-252.t6-depl.*.f33

├── slice_equil_benchmark

│   ├── core_average_decay_1MTIHM.f71

│   ├── core_average_decay_1MTIHM.ii.json

│   ├── pbmr400_slice.v7.1-252.t6-depl.f71

│   ├── pbmr400_slice.v7.1-252.t6-depl.ii.json

│   ├── pbmr400_slice.v7.1-252.t6-depl.inp

│   ├── pbmr400_slice.v7.1-252.t6-depl.json

│   ├── pbmr400_slice.v7.1-252.t6-depl.out

│   └── pbmr400_slice.v7.1-252.t6-depl.*.f33

└── slice_fresh

    ├── pbmr400_slice.v7.1-252.t6-depl.f71

    ├── pbmr400_slice.v7.1-252.t6-depl.inp

    ├── pbmr400_slice.v7.1-252.t6-depl.json

    ├── pbmr400_slice.v7.1-252.t6-depl.out

    └── pbmr400_slice.v7.1-252.t6-depl.*.f33

```

- inp: text input file