Barriers to optimisation
	• With yields so low (~1-2%), there is a lot of noise in the figure of merit • One simulation has ~20k particles to start with, becoming ~60k with multiple decays and emission delays • At 1% this gives 600 out, s=24.3 • At 2% this gives 1200 out, s=34.3 • Could even be a factor of sqrt(3) larger