Neutronics analysis for FMITS at SNS
The fusion material community has a growing interest in irradiating materials under a spallation spectrum, in which the wide range of helium/dpa ratios provides a unique opportunity for verifying and adjusting simulation model studies of the radiation effects on structural fusion materials. One of s...
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| Veröffentlicht in: | Journal of nuclear materials 2014-07, Vol.450 (1-3), p.20-26 |
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| container_title | Journal of nuclear materials |
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| creator | Lu, Wei McManamy, Thomas J. Ferguson, Phillip D. Gallmeier, Franz X. |
| description | The fusion material community has a growing interest in irradiating materials under a spallation spectrum, in which the wide range of helium/dpa ratios provides a unique opportunity for verifying and adjusting simulation model studies of the radiation effects on structural fusion materials. One of such efforts is the recently proposed FMITS project to be carried out at SNS. The conceptual design of FMITS was completed and briefly presented here. In this design, two sample rods are placed 3cm and 5cm off the centreline, respectively, in front of the mercury target, where the back scattering neutron flux spectrum was found to be fairly close to the ITER fusion spectrum. The PKA spectra at the FMITS samples were also compared to those at ITER. The results show a good agreement between the two types of PKA spectra. At a nominal power of 1.4MW, the displacement production at samples of FMITS is 1.6–5.5dpa/yr for steel, and 1.8–3.4dpa/yr for SiC. The ratio of the gas production versus the displacement production is 13–75appmHe/dpa and 76–311appmH/dpa for steel, and 30–98appmHe/dpa and 28–145appmH/dpa for SiC. This study found no negative impact of FMITS on the SNS moderator performance based on the current conceptual design. |
| doi_str_mv | 10.1016/j.jnucmat.2014.03.010 |
| format | Article |
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One of such efforts is the recently proposed FMITS project to be carried out at SNS. The conceptual design of FMITS was completed and briefly presented here. In this design, two sample rods are placed 3cm and 5cm off the centreline, respectively, in front of the mercury target, where the back scattering neutron flux spectrum was found to be fairly close to the ITER fusion spectrum. The PKA spectra at the FMITS samples were also compared to those at ITER. The results show a good agreement between the two types of PKA spectra. At a nominal power of 1.4MW, the displacement production at samples of FMITS is 1.6–5.5dpa/yr for steel, and 1.8–3.4dpa/yr for SiC. The ratio of the gas production versus the displacement production is 13–75appmHe/dpa and 76–311appmH/dpa for steel, and 30–98appmHe/dpa and 28–145appmH/dpa for SiC. 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One of such efforts is the recently proposed FMITS project to be carried out at SNS. The conceptual design of FMITS was completed and briefly presented here. In this design, two sample rods are placed 3cm and 5cm off the centreline, respectively, in front of the mercury target, where the back scattering neutron flux spectrum was found to be fairly close to the ITER fusion spectrum. The PKA spectra at the FMITS samples were also compared to those at ITER. The results show a good agreement between the two types of PKA spectra. At a nominal power of 1.4MW, the displacement production at samples of FMITS is 1.6–5.5dpa/yr for steel, and 1.8–3.4dpa/yr for SiC. The ratio of the gas production versus the displacement production is 13–75appmHe/dpa and 76–311appmH/dpa for steel, and 30–98appmHe/dpa and 28–145appmH/dpa for SiC. This study found no negative impact of FMITS on the SNS moderator performance based on the current conceptual design.</description><subject>Communities</subject><subject>Design engineering</subject><subject>Displacement</subject><subject>Moderators</subject><subject>Nuclear engineering</subject><subject>Silicon carbide</subject><subject>Spectra</subject><subject>Structural steels</subject><issn>0022-3115</issn><issn>1873-4820</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNqFkLFOwzAURS0EEqXwCUgZGFgS3nNiO5kQqihUKmVomS3HfZEcpUmxE6T-PanavdNdzr3SPYw9IiQIKF_qpG4HuzN9wgGzBNIEEK7YBHOVxlnO4ZpNADiPU0Rxy-5CqAFAFCAm7GlFQ--71tkQmdY0h-BCVHU-mn8tNuvI9NF6tb5nN5VpAj2cc8p-5u-b2We8_P5YzN6WseUF9LEpREEy55kxVCoQQqlclJhZIllaKypZGAIuK8MraYzKc55TicilxKLMRDplz6fdve9-Bwq93rlgqWlMS90QNEqFQvE0xcuokFwqgJGeMnFCre9C8FTpvXc74w8aQR8F6lqfBeqjQA2pHgWOvddTj8bLf468DtZRa2nrPNlebzt3YeEfGYd5OQ</recordid><startdate>20140701</startdate><enddate>20140701</enddate><creator>Lu, Wei</creator><creator>McManamy, Thomas J.</creator><creator>Ferguson, Phillip D.</creator><creator>Gallmeier, Franz X.</creator><general>Elsevier B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7ST</scope><scope>C1K</scope><scope>SOI</scope><scope>7SR</scope><scope>7TB</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>FR3</scope><scope>H8D</scope><scope>JG9</scope><scope>L7M</scope></search><sort><creationdate>20140701</creationdate><title>Neutronics analysis for FMITS at SNS</title><author>Lu, Wei ; McManamy, Thomas J. ; Ferguson, Phillip D. ; Gallmeier, Franz X.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c290t-a959e6824aaeb70557785b14cee6bcc5f69ae026fa2f6aa78828eb1126619b453</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Communities</topic><topic>Design engineering</topic><topic>Displacement</topic><topic>Moderators</topic><topic>Nuclear engineering</topic><topic>Silicon carbide</topic><topic>Spectra</topic><topic>Structural steels</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Lu, Wei</creatorcontrib><creatorcontrib>McManamy, Thomas J.</creatorcontrib><creatorcontrib>Ferguson, Phillip D.</creatorcontrib><creatorcontrib>Gallmeier, Franz X.</creatorcontrib><collection>CrossRef</collection><collection>Environment Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Environment Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of nuclear materials</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Lu, Wei</au><au>McManamy, Thomas J.</au><au>Ferguson, Phillip D.</au><au>Gallmeier, Franz X.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Neutronics analysis for FMITS at SNS</atitle><jtitle>Journal of nuclear materials</jtitle><date>2014-07-01</date><risdate>2014</risdate><volume>450</volume><issue>1-3</issue><spage>20</spage><epage>26</epage><pages>20-26</pages><issn>0022-3115</issn><eissn>1873-4820</eissn><abstract>The fusion material community has a growing interest in irradiating materials under a spallation spectrum, in which the wide range of helium/dpa ratios provides a unique opportunity for verifying and adjusting simulation model studies of the radiation effects on structural fusion materials. One of such efforts is the recently proposed FMITS project to be carried out at SNS. The conceptual design of FMITS was completed and briefly presented here. In this design, two sample rods are placed 3cm and 5cm off the centreline, respectively, in front of the mercury target, where the back scattering neutron flux spectrum was found to be fairly close to the ITER fusion spectrum. The PKA spectra at the FMITS samples were also compared to those at ITER. The results show a good agreement between the two types of PKA spectra. At a nominal power of 1.4MW, the displacement production at samples of FMITS is 1.6–5.5dpa/yr for steel, and 1.8–3.4dpa/yr for SiC. The ratio of the gas production versus the displacement production is 13–75appmHe/dpa and 76–311appmH/dpa for steel, and 30–98appmHe/dpa and 28–145appmH/dpa for SiC. This study found no negative impact of FMITS on the SNS moderator performance based on the current conceptual design.</abstract><pub>Elsevier B.V</pub><doi>10.1016/j.jnucmat.2014.03.010</doi><tpages>7</tpages></addata></record> |
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| ispartof | Journal of nuclear materials, 2014-07, Vol.450 (1-3), p.20-26 |
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| language | eng |
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| source | Elsevier ScienceDirect Journals Complete |
| subjects | Communities Design engineering Displacement Moderators Nuclear engineering Silicon carbide Spectra Structural steels |
| title | Neutronics analysis for FMITS at SNS |
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