The Gotthard-II readout ASIC and detector system

<!--HTML-->Gotthard-II is a charge-integrating microstrip detector developed for experiments and diagnostics at free-electron lasers using hard X-rays of 5 keV–20 keV. Its potential scientific applications include X-ray absorption/emission spectroscopy, energy dispersive experiments, as well as veto signal generation for pixel detectors. The Gotthard-II ASIC has been designed in several optimization steps in order to meet the requirements of the European XFEL, i.e. single photon sensitivity, large dynamic range as well as a high frame rate of 4.5 MHz. The ASIC design and performance will be presented. The detector system as well as the results from beam tests will be discussed.