Orateur
Description
The presentation will review the technologies that have been developed during the last year for testing the performances of the metrological instrumentation core of LISA with the Beam Simulator, a test contraption. An introductory part will give a general description of the Beam Simulator, explaining the need at the origin of its development, the test Interferometric Detection System (IDS) setup, the key performances and functionalities to validate during the IDS test campaign as well its functional principles. Then it will focus on the technological challenges raised by particular sub-systems of the Beam Simulator, and the progress made on these aspects. Will be evoked mainly the Beam Pointing Alignment Mechanisms to align LISA OB and BSIM with micro-rad and micrometer precisions ; Rx Pointing Control System a set of two tip-tilt mirrors used to tilt the Rx beam with respect to the Ref. beam to characterized Tilt-To-Length ; and apodisation and centering masks to control beam shape and optimize detection.