Development of a large active area beam telescope based on the SiD microstrip sensorI

A beam telescope as one of the most important and often requested test beam equipment provides particle tracking to test beamusers. At the DESY II test beam facility, a new beam telescope called Lycoris based on a microstrip sensor has been designed toaddress the user demands for momentum measurement in a 1 T solenoid magnet or large area tracking with limited space (3:5 cmbetween the potential user device and the magnet inner wall). Lycoris is designed to provide a high-precision resolution of at least10 µm along the bending direction, and a large active area of 1010 cm2 to cover at least 90% of the beam particles at energies of1-6 GeV. The microstrip sensor was originally designed for the Silicon Detector (SiD) at the International Linear Collider (ILC),which adopted a hybrid-less design, i.e. a second metallization layer is used to route signals from strips to the bump-bonded ASIC,and from the ASIC to a wire-bond pad to the outside. This hybrid-less arrangement eliminates the need for a complex hybriddesign, and its functioning is first-time tested in this project. The performance of the sensor modules was firstly tested in the labthen at the DESY II test beam facility in August/September 2018, and the results will be presented here. In addition, a summarywill be given at the end with an overview of the ongoing test beam campaign of the Lycoris prototype in February 2019