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Radiation shielding analyses for the ECRH launcher in the ITER upper port
| Content Provider | Scilit |
|---|---|
| Author | Serikov, Arkady Fischer, U. Heidinger, R. Lang, K. Luo, Y. Tsige-Tamirat, H. |
| Copyright Year | 2005 |
| Description | Journal: Journal of Physics: Conference Series Radiation shielding analyses have been performed for the ECRH system in the ITER upper port to complete the neutron streaming analysis performed previously. The analyses aimed at assessing and optimising the performance of the radiation shield to prove that the shielding requirements can be met by the proposed design variants. The radiation transport calculations have been performed by means of the Monte Carlo programme MCNP in 3D geometry using the standard ITER neutronics model with ECRH launcher and plug integrated into the upper port. The interface programme MCAM was used to convert the 3D ECRH launcher models available from the CAD-system for use with MCNP-calculations. It was shown that the launcher design with the proposed radiation shield can satisfy the design limits for the radiation loads to both the launcher and the neighbouring components such as the Vacuum Vessel and the TF coils. Radiation dose levels were assessed for reactor shutdown at the rear side of ECRH launcher at locations where personnel access for maintenance may be required. The shutdown dose rate calculations were also performed in 3D geometry by applying the rigorous 2-step (R2S) method and comparing the results to those obtained with the direct 1-step (D1S) method. The R2S method includes activation calculations for the launcher materials by means of the inventory code FISPACT. It was proven that the shutdown dose rates inside the port with straight waveguides will be below the ITER radiation limit of 100 µSv/hr after 10 days decay time. |
| Related Links | http://iopscience.iop.org/article/10.1088/1742-6596/25/1/023/pdf |
| Ending Page | 188 |
| Page Count | 8 |
| Starting Page | 181 |
| ISSN | 17426588 |
| e-ISSN | 17426596 |
| DOI | 10.1088/1742-6596/25/1/023 |
| Journal | Journal of Physics: Conference Series |
| Issue Number | 1 |
| Volume Number | 25 |
| Language | English |
| Publisher | IOP Publishing |
| Publisher Date | 2005-01-01 |
| Access Restriction | Open |
| Subject Keyword | Journal: Journal of Physics: Conference Series Nuclear Energy and Engineering Radiation Shielding Shielding Analyses Ecrh Launcher Upper Port Iter Upper |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physics and Astronomy |
