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. 4.3.2. Additionally, three different bands are added showing the intrinsic 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).