Development of a Data Acquisition System for the Belle II Silicon Vertex Detector

Tohoku University, Miyagi, Japan The silicon-strip vertex detector in the Belle II experiment is one of essential detectors to search for physics beyondthe Standard Model. To read out all 223,744 readout strips of the double-sided silicon strip detectors in high beam background, 1748 APV25 chips are employed for the frontend electronics. Hence, flash analog-to-digital conversion with high-density inputs is required on the back-end electronics. We developed prototypes of the back-end electronics and successfully performed a full integration testat the DESYelectron beam line. In this paper, we report on the development of the prototypes and results from the beam test. Technology and Instrumentation in Particle Physics2014, 2-6 June, 2014 Amsterdam, the Netherlands