Optimization of the sensor support prototype for the alignment of components in the High Luminosity LHC

In the context of the High Luminosity Large Hadron Collider (HL-LHC) project at CERN, studies presented in this document describe the validation process of the sensor support prototype that will be implemented in the Full Remote Alignment System (FRAS). The validation process is based on a series of tests that aim to verify if the sensor support meets the requirements according to the functional specifications, and is therefore suitable to be installed in the accelerators tunnel, where the upgrades for HL-LHC will take place. The test series provided satisfying results in all the analyzed fields, ranging from technical and mechanical aspects to the design of the components, but also offered the base for several design optimizations that have been developed to improve the prototype. The sensor support prototype has been validated and will be produced with the proposed modifications in a pre-series production for two test installations. The final series will be implemented together with all other components of the FRAS between 2025 and 2027 on the accelerator components of the HL-LHC tunnel.