## 3 Nuclear Analyses
### Spatial Distributions of the Nuclear Loads on the Divertor Targets, Both for WCLL and HCPB Blanket
The peak value on the outer target is achieved on the 53 rd row and external columns (1 st, 2 nd and 42 nd, 43 rd) and it is 7.22 dpa/FPY. The absolute minimum value is 1.28 dpa/FPY, on the 1 st row and innermost columns (21 st, 22 nd and 23 rd) of the Cu/CuCrZr components of the outer target. The lowest value of the inner target amounts to 1.47 dpa/FPY, once again reached on the bottom and central part of the target (1 st row and 15 th, 16 th, 17 th columns). The nuclear damage distributions, as in the previous cases, show a greater intensity, both with WCLL and HCPB, on the baffle region and external sides of the targets, as it is reasonable to expect. Figures 21 and 22 show the maps of the nuclear damage (dpa/FPY) distribution of the Eurofer PFC-CB supports on the inner and outer target, both for WCLL and HCPB, respectively. If the maps of Figure 21 are observed, which are related to the configuration with WCLL, the following considerations can be stated: the absolute peak value amounts to 5.07 dpa/FPY and it is achieved in correspondence of the 14 th row and external columns (1 st, 2 nd, 30 th and 31 st) of the inner target array. The maximum value of damage on the outer target is 4.99 dpa/FPY and it is reached in correspondence of the 11 th row and external columns (1 st and 43 rd) of the array. The absolute minimum value amounts to 0.77 dpa/FPY and it can be observed on the 1 st row and innermost columns (21 st, 22 nd and 23 rd) of the outer target arrays. The minimum value on the inner target is 0.86 dpa/FPY, reached on the 1 st row and innermost columns (15 th, 16 th and 17 th) of the array. Figure 21: Nuclear damage (dpa/FPY) distribution on PFC-CB supports (Eurofer) of the inner (**left**) and outer (**right**) target, with WCLL blanket. Figure 20: Nuclear damage (dpa/FPY) distribution on Cu/CuCrZr components of the inner (**left**) and outer (**right**) target, with HCPB blanket. Regarding the HCPB blanket, the same maps of the nuclear damage distribution on Eurofer PFC-CB supports, can be seen in Figure 22, highlighting the following main considerations: the absolute peak value is reached on the 11 th row and external columns (1 st and 43 rd) of the outer target array, and it amounts to 4.41 dpa/FPY. The peak value on the inner target is achieved on the 13 th row and external columns (1 st and 31 st) and it is 4.40 dpa/FPY, showing an identical peak value of the outer target. The absolute minimum value is 0.68 dpa/FPY, on the 1 st row and innermost columns (21 st, 22 nd and 23 rd) of the outer target array. The lowest value of the inner target amounts to 0.72 dpa/FPY, once again reached on the bottom and central part of the array (1 st row and 15 th, 16 th, 17 th columns). These nuclear damage distributions, as for the other components already analyzed, show higher levels of magnitude, both with WCLL and HCPB, on the baffle region and external sides of both the targets, as already underlined. Figures 23 and 24 show the maps of the He-production rate (appm/FPY) distribution of W-monoblocks arranged on the inner and outer target, both for WCLL and HCPB, respectively. The maps of Figure 23 (WCLL) highlight the following main considerations: the absolute peak value amounts to 1.88 appm/FPY, reached in correspondence of the 53 rd row and external columns (1 st and 43 rd) of the outer target array. The maximum value on the inner target is 1.83 appm/FPY and it is achieved in correspondence of the 67 th row and external columns (1 st and and 31 st) of the array. The minimum values amount to 0.32 appm/FPY (inner target) and 0.37 appm/FPY (outer target), both reached on the 1 st row and innermost edges (15 th, 16 th and 17 th; 21 st, 22 nd and 23 rd; inner and outer, respectively). Figure 12:0 He-production (appm/FPY) distribution on W-monoblocks of the inner (**left**) and outer (**right**) target, with WCLL blanket. Figure 12:1 Nuclear damage (dpa/FPY) distribution on PFC-CB supports (Eurofer) of the inner (**left**) and outer (**right**) target, with HCPB blanket.