CAD-Based Shielding Analysis for ITER Port Diagnostics

CAD-Based Shielding Analysis for ITER Port Diagnostics

Radiation shielding analysis conducted in support of design development of the contemporary diagnostic systems integrated inside the ITER ports is relied on the use of CAD models. This paper presents the CAD-based MCNP Monte Carlo radiation transport and activation analyses for the Diagnostic Upper...

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Bibliographic Details
Published in:EPJ Web of Conferences Vol. 153; p. 3010
Main Authors: Serikov, Arkady, Fischer, Ulrich, Anthoine, David, Bertalot, Luciano, De Bock, Maartin, O’Connor, Richard, Juarez, Rafael, Krasilnikov, Vitaly
Format: Journal Article Conference Proceeding
Language:English
Published: Les Ulis EDP Sciences 01-01-2017
Subjects:
Charge exchange
Computer simulation
Converters
Diagnostic systems
Dosage
Energy spectra
Iterative methods
Plugs
Ports
R&D
Radiation shielding
Radiation transport
Research & development
Shutdowns
Spectrum analysis
Three dimensional models
Tritium
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Summary:Radiation shielding analysis conducted in support of design development of the contemporary diagnostic systems integrated inside the ITER ports is relied on the use of CAD models. This paper presents the CAD-based MCNP Monte Carlo radiation transport and activation analyses for the Diagnostic Upper and Equatorial Port Plugs (UPP #3 and EPP #8, #17). The creation process of the complicated 3D MCNP models of the diagnostics systems was substantially accelerated by application of the CAD-to-MCNP converter programs MCAM and McCad. High performance computing resources of the Helios supercomputer allowed to speed-up the MCNP parallel transport calculations with the MPI/OpenMP interface. The found shielding solutions could be universal, reducing ports R&D costs. The shield block behind the Tritium and Deposit Monitor (TDM) optical box was added to study its influence on Shut-Down Dose Rate (SDDR) in Port Interspace (PI) of EPP#17. Influence of neutron streaming along the Lost Alpha Monitor (LAM) on the neutron energy spectra calculated in the Tangential Neutron Spectrometer (TNS) of EPP#8. For the UPP#3 with Charge eXchange Recombination Spectroscopy (CXRS-core), an excessive neutron streaming along the CXRS shutter, which should be prevented in further design iteration.
ISSN:2100-014X
2101-6275
2100-014X
DOI:10.1051/epjconf/201715303010