Relative energy resolution as a function of the energy of the incident particle. Displayed are the target resolution (black, dashed-dotted) and the measured energy resolution from the test beam (green, dashed), \Sec{sec:TBNonLin} Additionally, three different bands are added showing the intrisic resolution with added 1, 2 and 3\% miscalibration, considering the residual miscalibration during the test beam to be between 0\% (upper band limit) and 1\% (lower band limit).