Activities in Divertor Reflector and Linear Plates Using WCLL and HCPB Breeding Blanket Concepts
In fusion devices, such as European Demonstration Fusion Power Reactor (EU DEMO), primary neutrons can cause material activation due to the interaction between the source particles and the targeting material. Subsequently, the reactor’s inner components become activated. For safety and safe performa...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-12-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/14/24/8305 |
| _version_ | 1797505130282614784 |
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| author | Simona Breidokaite Gediminas Stankunas |
| author_facet | Simona Breidokaite Gediminas Stankunas |
| author_sort | Simona Breidokaite |
| collection | DOAJ |
| description | In fusion devices, such as European Demonstration Fusion Power Reactor (EU DEMO), primary neutrons can cause material activation due to the interaction between the source particles and the targeting material. Subsequently, the reactor’s inner components become activated. For safety and safe performance purposes, it is necessary to evaluate neutron-induced activities. Activities results from divertor reflector and liner plates are presented in this work. The purpose of liner shielding plates is to protect the vacuum vessel and magnet coils from neutrons. As for reflector plates, the function is to shield the cooling components under plasma-facing components from alpha particles, thermal effects, and impurities. Plates are made of Eurofer with a 3 mm layer of tungsten, while the water is used for cooling purposes. The calculations were performed using two EU DEMO MCNP (Monte Carlo N-Particles) models with different breeding blanket configurations: helium-cooled pebble bed (HCPB) and water-cooled lithium lead (WCLL). The TENDL–2017 nuclear data library has been used for activation reactions cross-sections and nuclear reactions. Activation calculations were performed using the FISPACT-II code at the end of irradiation for cooling times of 0 s–1000 years. Radionuclide analysis of divertor liner and reflector plates is also presented in this paper. The main radionuclides, with at least 1% contribution to the total value of activation characteristics, were identified for the previously mentioned cooling times. |
| first_indexed | 2024-03-10T04:14:12Z |
| format | Article |
| id | doaj.art-958105d661fd4b65bb67a112c7ea4d1d |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T04:14:12Z |
| publishDate | 2021-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-958105d661fd4b65bb67a112c7ea4d1d2023-11-23T08:05:24ZengMDPI AGEnergies1996-10732021-12-011424830510.3390/en14248305Activities in Divertor Reflector and Linear Plates Using WCLL and HCPB Breeding Blanket ConceptsSimona Breidokaite0Gediminas Stankunas1Laboratory of Nuclear Installation Safety, Lithuanian Energy Institute, Breslaujos g. 3, LT-44403 Kaunas, LithuaniaLaboratory of Nuclear Installation Safety, Lithuanian Energy Institute, Breslaujos g. 3, LT-44403 Kaunas, LithuaniaIn fusion devices, such as European Demonstration Fusion Power Reactor (EU DEMO), primary neutrons can cause material activation due to the interaction between the source particles and the targeting material. Subsequently, the reactor’s inner components become activated. For safety and safe performance purposes, it is necessary to evaluate neutron-induced activities. Activities results from divertor reflector and liner plates are presented in this work. The purpose of liner shielding plates is to protect the vacuum vessel and magnet coils from neutrons. As for reflector plates, the function is to shield the cooling components under plasma-facing components from alpha particles, thermal effects, and impurities. Plates are made of Eurofer with a 3 mm layer of tungsten, while the water is used for cooling purposes. The calculations were performed using two EU DEMO MCNP (Monte Carlo N-Particles) models with different breeding blanket configurations: helium-cooled pebble bed (HCPB) and water-cooled lithium lead (WCLL). The TENDL–2017 nuclear data library has been used for activation reactions cross-sections and nuclear reactions. Activation calculations were performed using the FISPACT-II code at the end of irradiation for cooling times of 0 s–1000 years. Radionuclide analysis of divertor liner and reflector plates is also presented in this paper. The main radionuclides, with at least 1% contribution to the total value of activation characteristics, were identified for the previously mentioned cooling times.https://www.mdpi.com/1996-1073/14/24/8305fusionDEMObreeding blanketfusionFISPACTactivity |
| spellingShingle | Simona Breidokaite Gediminas Stankunas Activities in Divertor Reflector and Linear Plates Using WCLL and HCPB Breeding Blanket Concepts Energies fusion DEMO breeding blanket fusion FISPACT activity |
| title | Activities in Divertor Reflector and Linear Plates Using WCLL and HCPB Breeding Blanket Concepts |
| title_full | Activities in Divertor Reflector and Linear Plates Using WCLL and HCPB Breeding Blanket Concepts |
| title_fullStr | Activities in Divertor Reflector and Linear Plates Using WCLL and HCPB Breeding Blanket Concepts |
| title_full_unstemmed | Activities in Divertor Reflector and Linear Plates Using WCLL and HCPB Breeding Blanket Concepts |
| title_short | Activities in Divertor Reflector and Linear Plates Using WCLL and HCPB Breeding Blanket Concepts |
| title_sort | activities in divertor reflector and linear plates using wcll and hcpb breeding blanket concepts |
| topic | fusion DEMO breeding blanket fusion FISPACT activity |
| url | https://www.mdpi.com/1996-1073/14/24/8305 |
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