First performance results of the Lycoris large area strip beam telescope

The Lycoris large area telescope is a new telescope for the DESY II Test Beam Facility based on a hybrid-less silicon micro strip sensor design by SLAC for a detector at the ILC. The sensor has an active area of 93.5×93.5mm
²
with a strip pitch of 25μm. The sensor is read out via two ASICs (KPiX) functioning as pitch-adapter and integrated digital readout that are bump bonded to the sensor surface. The signals are routed through an extra metallization layer within the sensor from the strips to the chips on the surface. The telescope consists of two cassettes with three layers of the strip sensor per cassette. The system was designed to be able to provide momentum reference measurements for large Devices Under Test (DUT) within a large magnet with minimal available space. As such, the system needs to provide a single-point resolution better than 10μm along the bending direction of the magnetic field and a resolution better than 1mm parallel to the magnetic field lines. The full system was first assembled in May 2019 and subsequently tested in multiple test beam campaigns at the DESY II Test Beam Facility. Some results from the most recent test beam campaign are presented here.