Göttingen 2025 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 91: Silicon Detectors VIII (MAPS, misc.)

T 91.1: Vortrag

Freitag, 4. April 2025, 09:00–09:15, VG 1.101

All-Silicon Modules — Hans Krüger, Marco Vogt, •Andreas Ulm, and Jochen Dingfelder — Universität Bonn

Silicon pixel detectors are an essential part of modern tracking systems for high energy physics experiments as they meet the requirements of high spatial and time resolution, and relatively low material budget. To cover large areas in the detector volume individual chips are combined to create modules. These modules are easier to assemble to full tracking systems. However gluing, additional flex PCBs, cooling and support structures, and also structural silicon can introduce significant amounts of material.

To reduce the material budget of tracking detectors as much as possible, a new concept of module building is investigated. By post-processing monolithic chip wafers, redistribution layers can be built on top of the chips for electrical connections to 4 chips in a row. By using low-power monolithic chips air cooling may be feasible and mechanical support is not necessary for thin ladder structures of up to 15 cm in length with thicknesses around 400 microns.

This talk will discuss concepts, ideas and first steps to prototyping such all-silicon modules.

Keywords: Silicon; Pixel; Module; Metalization