Table 1.

The five different options for our shielding configuration, featuring different thicknesses of water, Pb, Cu and PE. See Fig. 4 for a schematic view of the examined configurations

Option	Tank	Water	Dry-well	Inner shielding			Cryostat	Top shielding
	(steel)	radius	(stainless steel)	(Pb)	(Cu)	(PE)	(Cu)	(Pb)	(Cu)	(PE)
	(cm)	(cm)	(cm)	(cm)	(cm)	(cm)	(cm)	(cm)	(cm)	(cm)
1	1.5	150	0.4	10	15	10	0.8	10	15	10
2	1.5	200	0.4	0	15	10	0.8	0	40	10
3	1.5	200	0.4	0	15	0	0.8	0	40	0
4	1.5	300	0.4	0	8	0	0.8	0	30	0
5	1.5	300	0.4	0	0	0	0.8	0	40	0