Abstract
A new MCNP geometry model of the ITER Neutral Beam Injection (NBI) ports was developed starting from the latest engineering CAD models provided by ITER. The model includes 3 heating (HNBI) ports and one diagnostic port (DNBI), and extends up to the bio-shield. The engineering CAD models were simplified on the CATIA platform according to the neutronic requirements and then converted into MCNP geometry making use of the McCad conversion tool. Finally, the new NBI port model was integrated into an available 80° A-lite ITER torus sector model. The nuclear analysis performed on the basis of this model provides the following nuclear responses: the neutron flux distribution in all NBI ports, the nuclear heating distribution in all NBI ducts; the nuclear heating and radiation loads to the TFC magnets; the radiation damage and gas production in the VV; and the distribution of the shutdown dose rate inside the cryostat.
| Original language | English |
|---|---|
| Pages (from-to) | 1585-1588 |
| Number of pages | 4 |
| Journal | Fusion Engineering and Design |
| Volume | 98-99 |
| DOIs | |
| State | Published - Oct 1 2015 |
| Externally published | Yes |
Funding
This work has been funded by the ITER Organization under the ITER contract IO/CT/12/430000068 using an adaptation of the A-lite MCNP model which was developed as a collaborative effort between the FDS team of ASIPP China, ENEA Frascati, UKAEA UK, JAEA Naka, and the ITER Organization. The views and opinions expressed herein do not necessarily reflect those of the ITER Organization.
| Funders | Funder number |
|---|---|
| ENEA Frascati | |
| ITER | IO/CT/12/430000068 |
| UK Atomic Energy Authority |
Keywords
- Geometry conversion
- ITER
- MCNP
- NBI ports
