Speaker
Description
The Phase II upgrade of the Compact Muon Solenoid (CMS) detector includes major advancements in composite structures and thermal interface design. Following successful prototyping and validation, production of the Inner Tracker Support Tube (ITST) has begun. This presentation highlights key lessons learned and milestones achieved during the production of the ITST composite structures, including the central section and two end sections. Particular emphasis is placed on the transition from prototype to full-length components, including the development and scaling of finite element models for tool shape compensation and their impact on manufacturing accuracy. Critical insights were also gained from the design and implementation of internal bond lines and external interfaces, such as rails for pixel detector support structures. Results from validation tests are presented and compared with metrology data from produced components, demonstrating the correlation between design predictions and as-built performance. These findings provide important guidance for large-scale composite production in high-precision detector systems.