In 2025, the LHC (Large Hadron Collider) will be upgraded to the High-Luminosity LHC. The luminosity will be enhanced by a factor of 5 to 10, up to 10^35 cm^-2 s^-1 . This leads to new challenges for experiments such as the Compact Muon Solenoid (CMS), which is already aicted by aging eects (radiation damages). Therefore the currently installed silicon sensors of the track detector ("Tracker") have to be replaced, furthermore to carry out higher radiation doses (through raised collision rates) and increased data rates. The prototypes of the new sensors are provided by the vendors Inneon and Hamamatsu. These have to be qualied for application by institutes like the Institute of High Energy Physics (HEPHY). For this diploma thesis, I did testbeam measurements on these sensors sing protons (64 to 252 MeV) at MedAustron and electrons (5.6 GeV) at Deutsches Elektronen-Synchrotron (DESY), analyzed the data and utilized performance and quality evaluation. These methods include IV characteristics, noise contribution, cluster analysis, beam prole measurement, eciency and energy measurements. In preparation for the testbeams, I tested new trigger scintillators to determine dark rates and eciency and the strip sensor system using a radioactive source and a laser test stand at HEPHY. At the MedAustrons rst testbeam, high particle rates (up to 10^10 /s) exceeded the sensor systems processing rate. Occupancy and pile-up eects dominated the signal and distorted measured energy depositions. During the testbeam, the bias voltage supply of the strip sensor showed compliance, leading to voltage drops. After changes made to the accelerator by MedAustron sta, lower particle rates (10^5 /s) were available at the second testbeam. These actions, complemented by optimizations in the setup, lead to stable power supply and analysis showed excellent conformity of measured stopping power to reference data. Prospective testbeams require extensive preparations in terms of functionality tests, standardization and simulation in advance to identify design aws. For achieving better energy resolution in future, well-dened particle rate control by MedAustron is essential, as well as high time-resolved monitoring the current consumption of the sensor. If there is a demand for low-energy testbeams, it is essential to analyze the non-linear gain behavior in the upper energy deposition range of the ALiBaVa system. Based on that, one may eventually extend the analysis software algorithm. Further procedures should cover protection against electromagnetic interference. Perhaps it will be possible to nd an appropriate model to characterize electronic noise contribution to improve SNR.