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公开(公告)号:US20180009711A1
公开(公告)日:2018-01-11
申请号:US15642007
申请日:2017-07-05
IPC分类号: C04B14/28 , C04B7/02 , C04B7/32 , C04B111/00
CPC分类号: C04B14/28 , C04B7/02 , C04B7/32 , C04B28/02 , C04B28/06 , C04B2111/00215 , C04B2111/00258 , C04B2111/00612 , C04B2111/00862 , C04B2111/802 , G21F1/04
摘要: The present invention relates to a low-activation concrete comprising high-purity limestone aggregate and white cement, or high-purity limestone aggregate and aluminous cement. The low-activation concrete reduces the content of Europium, Cobalt and Cesium, as well as the content of elements such as Aluminium, Sodium, and Magnesium, when compared to standard concrete compositions and compositions for low-activation concrete already known in the art. The use of the low-activation concrete for forming an interior wall of a particle accelerator vault is provided as well.
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公开(公告)号:US20170345523A1
公开(公告)日:2017-11-30
申请号:US15605507
申请日:2017-05-25
CPC分类号: G21G1/10 , G21F1/12 , H05H7/00 , H05H13/005 , H05H2277/116
摘要: The present disclosure relates to an isotope production apparatus. In one implementation, the apparatus may include a cyclotron for producing a particle beam, a shielding surrounding the cyclotron, and a target system within the shielding. The shielding may include a first layer having a hydrogen content of at least 100 kg/m3 and a second layer having at least 4900 kg/m3 of material having an atomic number equal to or higher than 26, and at least 29 kg/m3 of hydrogen.
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