China has planned to develop independently the ITER TBM modules for testing during ITER operation period. Although different concepts for ITER TBMs have been proposed by other parties. However, the He-cooled solid bre...China has planned to develop independently the ITER TBM modules for testing during ITER operation period. Although different concepts for ITER TBMs have been proposed by other parties. However, the He-cooled solid breeder blanket （HCSB） with ferritic /martensitic steel （FMs） is still main stream for the fusion DEMO blanket design and has foundation of the world R＆D database. Therefore, a helium-cooled solid pebble bed concept has been adopted, as one of options, in Chinese TBM modules design. Under the cooperation of domestic institutes, the preliminary design and performances analysis as well as a draft design description document （DDD） based on the definition and the strategy of DEMO fusion reactor in China have been carried out recently.展开更多
1 Introduction Neutronics design for China HCSB TBM is one of the most important designs in TBM design activities due to offering the input parameters for analysis and calculation of other systems such as thermal-hyd...1 Introduction Neutronics design for China HCSB TBM is one of the most important designs in TBM design activities due to offering the input parameters for analysis and calculation of other systems such as thermal-hydraulics, activation, radioactive safety of environment, shielding and ventilation and so on. China HCSB TBM modulet is designed as a module with 3 × 3 sub-modules which is more fixed and safe than that in single module but more structural complex （See Fig. 1 ） . For this modularized TBM, a 3-D neutronics calculation by MCNP code should really been considered.展开更多
The China home team is developing an ITER TBM based on a helium-cooled solid breeder （HCSB） DEMO blanket concept . This blanket concept employs high-pressure helium （8 MPa） to cool down the blanket first wall （FW...The China home team is developing an ITER TBM based on a helium-cooled solid breeder （HCSB） DEMO blanket concept . This blanket concept employs high-pressure helium （8 MPa） to cool down the blanket first wall （FW） and side wall （SW） structures and the interior of the blanket module, including the beryllium multiplier pebble beds and the Li4SiO4 breeder pebble beds （enriched lithium-6 of 80%）. The tritium breeder is purged by forced flow low-pressure helium （0.1 MPa） provided by the tritium extraction system （TES）. Low activation ferritic/martensitic steel is selected as the structural material for the TBM.展开更多
1 Description of structure, materials and MCNP model Except that height, sub-module numbers of present HCSB TBM increases by 2 times, there are hardly other changes in structure and geometry. Fig.l shows general sche...1 Description of structure, materials and MCNP model Except that height, sub-module numbers of present HCSB TBM increases by 2 times, there are hardly other changes in structure and geometry. Fig.l shows general schematic for 3-D structure of previous 3 X 3 and updated 3 X 6 HCSB TBM structure. Present 3X6 HCSB TBM box is mounted on 1/2 ITER testing port. It is 48.4 cm in width, 66 cm in height, 63 cm in depth, 2 cm of gaps on side faces between frame wall and TBM box. A frame wall thickness around TBM module is 20 cm.展开更多
文摘China has planned to develop independently the ITER TBM modules for testing during ITER operation period. Although different concepts for ITER TBMs have been proposed by other parties. However, the He-cooled solid breeder blanket （HCSB） with ferritic /martensitic steel （FMs） is still main stream for the fusion DEMO blanket design and has foundation of the world R＆D database. Therefore, a helium-cooled solid pebble bed concept has been adopted, as one of options, in Chinese TBM modules design. Under the cooperation of domestic institutes, the preliminary design and performances analysis as well as a draft design description document （DDD） based on the definition and the strategy of DEMO fusion reactor in China have been carried out recently.
文摘1 Introduction Neutronics design for China HCSB TBM is one of the most important designs in TBM design activities due to offering the input parameters for analysis and calculation of other systems such as thermal-hydraulics, activation, radioactive safety of environment, shielding and ventilation and so on. China HCSB TBM modulet is designed as a module with 3 × 3 sub-modules which is more fixed and safe than that in single module but more structural complex （See Fig. 1 ） . For this modularized TBM, a 3-D neutronics calculation by MCNP code should really been considered.
文摘The China home team is developing an ITER TBM based on a helium-cooled solid breeder （HCSB） DEMO blanket concept . This blanket concept employs high-pressure helium （8 MPa） to cool down the blanket first wall （FW） and side wall （SW） structures and the interior of the blanket module, including the beryllium multiplier pebble beds and the Li4SiO4 breeder pebble beds （enriched lithium-6 of 80%）. The tritium breeder is purged by forced flow low-pressure helium （0.1 MPa） provided by the tritium extraction system （TES）. Low activation ferritic/martensitic steel is selected as the structural material for the TBM.
文摘1 Description of structure, materials and MCNP model Except that height, sub-module numbers of present HCSB TBM increases by 2 times, there are hardly other changes in structure and geometry. Fig.l shows general schematic for 3-D structure of previous 3 X 3 and updated 3 X 6 HCSB TBM structure. Present 3X6 HCSB TBM box is mounted on 1/2 ITER testing port. It is 48.4 cm in width, 66 cm in height, 63 cm in depth, 2 cm of gaps on side faces between frame wall and TBM box. A frame wall thickness around TBM module is 20 cm.
