Development and Implementation of Diagnostics for the CLEAR Facility

CLEAR, the CERN Linear Electron Accelerator for Research is a stand-alone user facility located at CERN. Providing a wide range of beam parameters that allows it to host a large spectrum of beam-based experiments, the machine also requires an important set of beam diagnostics. During 2018 spring beam time and summer shutdown, improvements have been performed to enlarge this set and improve its performance. A new graphical user interface has been implemented in order to perform bunch length measurements using the deflecting cavity. This tool has been developed in a sustainable way, to permit its libraries to be used for other software developments. The software has been successfully tested by both machine operators and external users. Its limits have been discussed and some improvements can still be done. The computations for the two energy spectrometers calibration are described in this paper. The obtained results have reached the users expectations in terms of precision, and the two spectrometers are complementary with the energy scales that they can measure. The calibration of the two sets of beam position monitors (BPMs) that are installed along the machine have also started. This documents relates the investigation of the actual state of these BPMs setup.