Table 4.

Radiogenic gammas, originating from distinct materials used in the various design options, entering the detector volume. Stated values include 1 $\sigma$ statistical uncertainties

Design option	Gamma source	Events with gammas	Total
		entering detector volume
		(year${}^{-1}$)	(year${}^{-1}$)
Option 1	PE	$(5.41\pm 0.13)·{10}^6$	$(5.68\pm 0.14)·{10}^6$
	Cu	$(2.74\pm 0.11)·{10}^5$
	Pb	$(8.90\pm 0.89)·{10}^2$
	Steel	$(2.70\pm 0.69)·{10}^1$
Option 2	PE	$(5.41\pm 0.13)·{10}^6$	$(5.68\pm 0.14)·{10}^6$
	Cu	$(2.74\pm 0.11)·{10}^5$
	Steel	$(1.16\pm 0.10)·{10}^3$
Option 3	Cu	$(4.06\pm 0.12)·{10}^5$	$(4.08\pm 0.13)·{10}^5$
	Steel	$(2.36\pm 0.15)·{10}^3$
Option 4	Cu	$(3.97\pm 0.11)·{10}^5$	$(4.46\pm 0.14)·{10}^5$
	Steel	$(4.89\pm 0.25)·{10}^4$
Option 5	Cu (cryostat)	$(1.51\pm 0.02)·{10}^5$	$(2.09\pm 0.04)·{10}^6$
	Steel	$(1.94\pm 0.04)·{10}^6$