Speaker
Description
During the LHC Long Shutdown 3 the CMS detector will undergo a major Phase-2 upgrade, to cope with the challenging environment of the High Luminosity LHC. The upgraded Phase-2 Outer Tracker (OT) is designed to have increased granularity and radiation tolerance with respect to the previous silicon strip tracker and the capability to handle higher data rates. A new feature of the upgraded OT, essential for future CMS physics studies, is to provide tracking information to the Level 1 CMS trigger. This feature requires a reduction of the data at the front-end level which was a key factor in the design of the OT p$_\mathrm{T}$ modules. The OT will consist of two module types, the strip-strip (2S) and the pixel-strip (PS) modules. Both module types are built around two closely spaced sensors: the 2S modules consist of two strip sensors, two front-end hybrids and a service hybrid, whereas the PS modules consist of a strip and a macro pixelated-strip sensor, two front-end hybrids, a readout hybrid and a power hybrid. The pre-series production of the OT hybrids was assessed and issues that were identified in the kick-off production were resolved. Improvements in the assembly process of the hybrids were also established. In this contribution, the quality control procedures of the OT hybrids and the status of the pre-series and the series production will be reported, together with the issues and their solutions.
| Primary experiment | CMS collaboration |
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