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T: Fachverband Teilchenphysik
T 63: DAQ, trigger and electronics III
T 63.4: Vortrag
Mittwoch, 1. April 2020, 17:15–17:30, L-3.015
Design of a Flexible Printed Circuit prototype for the High Granularity Timing Detector at ATLAS — •Maria Soledad Robles Manzano1, Andrea Brogna2, Peter Bernhard2, Fabian Greiner1, Lucia Masetti1, Paul Plattner1, Quirin Weitzel2, and Atila Kurt2 — 1Institut für Physik, Johannes-Gütenberg Universität Mainz — 2PRISMA Detector Lab, Johannes-Gütenberg Universität Mainz
The ATLAS detector at CERN is being upgraded to face the new HL-LHC challenges. In order to improve the physics performance of the ATLAS detector a High-Granularity Timing Detector (HGTD) is proposed. It will help to mitigate the pile-up contribution in the forward region by providing a timing resolution below 30 ps per track. 2 × 4 cm2 sensors are bump-bonded two ASICs in the detector basic unit, the so-called bare module. The active area, consisting of 2 double-sided disks per end-cap, populated by about 8000 modules in total, is surrounded by the Peripheral Electronics Boards (PEB). In this scenario, custom electronics is required to transmit the signals (1.28 Gbps) from the active area to the PEB as well as to bias the sensor (800 V) and deliver power (1.2 V at 1 A) to the ASICs. A 220 µm thick Flexible Printed Circuit (FLEX cable) was selected as the optimal candidate for such purpose. The baseline of the FLEX cable as well as the most recent prototype design are presented.