Table 1.

Accuracy of the energy determination by the step‐wedge procedure. Changes in beam energy were invoked by changing the Injector I. The ratio D20/D10 is measured using ionization chambers in solid water and using the signals registered by the MVCT detector for the different step‐wedge levels.

Injector I (Vdc)	Solid Water	D20/D10 Step Wedge	Difference (%)
3.10	0.535	0.536	0.2
3.96	0.521	0.520	$-0.2$
4.07	0.519	0.519	0.0
4.26	0.516	0.514	$-0.4$
5.00	0.502	0.499	$-0.6$