# Integration of the Full Tokamak Reference Model with the Complex Model for ITER Neutronic Analysis

## Abstract

The ITER International Organization has developed a number of reference Monte Carlo N-Particle (MCNP) models including the tokamak machine C-model, the Tokamak Complex model, and the neutral beam injection (NBI) systems model. The Tokamak Complex model primarily describes building structures beyond the bioshield. Representation of the tokamak and its systems are not included in this model. The Oak Ridge National Laboratory Radiation Transport Group has conducted two ITER neutronic analysis model integrations: (1) integration of the tokamak C-model with the Tokamak Complex model for shutdown dose rate characterization in Port Cell 16 at level B1, and (2) integration of the NBI model with the Tokamak Complex model for estimating the spatial distribution of biological dose rate at levels L1, L2, and L3 of the Tokamak Complex. The integrated models were further extended to include models of system components that are essential to the neutronic analyses. Furthermore, this paper presents the approach and computer tools used to integrate existing reference models, describes the additional design details implemented in the integrated models, and provides representative neutronic calculations based on the extended models.

- Authors:

- Oak Ridge National Lab. (ORNL) Radiation Transport Group, Oak Ridge, TN (United States)

- Publication Date:

- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

- Sponsoring Org.:
- USDOE

- OSTI Identifier:
- 1484140

- Grant/Contract Number:
- AC05-00OR22725

- Resource Type:
- Accepted Manuscript

- Journal Name:
- Fusion Science and Technology

- Additional Journal Information:
- Journal Volume: 74; Journal Issue: 4; Journal ID: ISSN 1536-1055

- Publisher:
- American Nuclear Society

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ITER; neutronic analyses; model integration; C-model; Tokamak Complex model

### Citation Formats

```
Yang, Jinan, Wilson, Stephen C., Mosher, Scott W., and Radulescu, Georgeta. Integration of the Full Tokamak Reference Model with the Complex Model for ITER Neutronic Analysis. United States: N. p., 2018.
Web. doi:10.1080/15361055.2018.1493325.
```

```
Yang, Jinan, Wilson, Stephen C., Mosher, Scott W., & Radulescu, Georgeta. Integration of the Full Tokamak Reference Model with the Complex Model for ITER Neutronic Analysis. United States. doi:10.1080/15361055.2018.1493325.
```

```
Yang, Jinan, Wilson, Stephen C., Mosher, Scott W., and Radulescu, Georgeta. Wed .
"Integration of the Full Tokamak Reference Model with the Complex Model for ITER Neutronic Analysis". United States. doi:10.1080/15361055.2018.1493325. https://www.osti.gov/servlets/purl/1484140.
```

```
@article{osti_1484140,
```

title = {Integration of the Full Tokamak Reference Model with the Complex Model for ITER Neutronic Analysis},

author = {Yang, Jinan and Wilson, Stephen C. and Mosher, Scott W. and Radulescu, Georgeta},

abstractNote = {The ITER International Organization has developed a number of reference Monte Carlo N-Particle (MCNP) models including the tokamak machine C-model, the Tokamak Complex model, and the neutral beam injection (NBI) systems model. The Tokamak Complex model primarily describes building structures beyond the bioshield. Representation of the tokamak and its systems are not included in this model. The Oak Ridge National Laboratory Radiation Transport Group has conducted two ITER neutronic analysis model integrations: (1) integration of the tokamak C-model with the Tokamak Complex model for shutdown dose rate characterization in Port Cell 16 at level B1, and (2) integration of the NBI model with the Tokamak Complex model for estimating the spatial distribution of biological dose rate at levels L1, L2, and L3 of the Tokamak Complex. The integrated models were further extended to include models of system components that are essential to the neutronic analyses. Furthermore, this paper presents the approach and computer tools used to integrate existing reference models, describes the additional design details implemented in the integrated models, and provides representative neutronic calculations based on the extended models.},

doi = {10.1080/15361055.2018.1493325},

journal = {Fusion Science and Technology},

number = 4,

volume = 74,

place = {United States},

year = {2018},

month = {8}

}

*Citation information provided by*

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Web of Science

#### Figures / Tables:

Works referenced in this record:

##
Status of the McCad geometry conversion tool and related visualization capabilities for 3D fusion neutronics calculations

journal, October 2013

- Große, D.; Fischer, U.; Kondo, K.
- Fusion Engineering and Design, Vol. 88, Issue 9-10

Figures / Tables found in this record:

*Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.*