Abstract
Shielding calculations for a thick shield with lots of penetrations can be a very challenging task. An example of this is the test cell cover of IFMIF, consisting of 270 cm of heavy concrete penetrated by about 40 ducts with a diameter of several centimeters, each of them with bends to limit neutron streaming. A proposal by Hendricks to tally the neutron current at intermediate surfaces and then model it as a source, with appropriate angular biasing, is described and tested. Although this method is laborious and leads to some loss of accuracy, it is found to give solutions to otherwise intractable problems.
Original language | English |
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Pages (from-to) | 438-445 |
Journal | Annals of Nuclear Energy |
Volume | 35 |
Issue number | 3 |
DOIs | |
Publication status | Published - 2008 |
MoE publication type | A1 Journal article-refereed |
Keywords
- fusion energy
- fusion reactors
- radiation
- radiation doses
- fast neutrons
- neutron flux
- neutron irradiation
- neutrons