Table 2.
A comparison of the ESA study active magnetic shields and habitat dose levels.
| Configuration | BL (Tm) | Msim (t) | Meng (t) | BFO (cSv/y) |
|---|---|---|---|---|
| LTSC toroid | 19 | 12.5 | – | 19.2 ± 1.1 |
| HTSC double-helix solenoid coil toroid | 4 | 11.2 | 47.2 | 29.3 ± 2.3 |
| HTSC racetrack coil toroid | 4.9 | 28.0 | 46.4 | 26.7 ± 1.1 |
| Habitat | – | 4.54 | – | 35.6 ± 1.8 |
The first mass quoted refers to the shield mass present in the Monte Carlo simulation. The second is the mass estimate from the engineering designs. The annual BFO dose equivalents refer to the GCR flux at solar minimum (1) and the barrel region acceptance (Figure 9). The quoted uncertainties represent the root-mean-square deviation of the average dose recorded in the six water cylinders (Figure 5).