Silicon strip staves and petals for the ATLAS Upgrade tracker of the HL-LHC

This paper describes the baseline integration structures for the silicon strip sensors to be used in the ATLAS detector for the Phase-II upgrade of the Large Hadron Collider (LHC) machine, the so-called High Luminosity LHC (HL-LHC). Highly modular structures have been developed for the integration of the silicon strips sensors, readout electronics, cooling, and support structures, called ‘staves’ for the barrel region and ‘petals’ for the end-caps of the ATLAS strips tracker. This work describes the status of the current prototypes, the building procedure, designed for mass production even at a prototyping stage, and their electrical performances.

► We studied modular structures for the strips sensors in the ATLAS Upgrade detector.
► Prototypes have been built and tested at the different construction stages.
► Promising results were observed in terms of performance and radiation tolerance.