Metrology Assurance of Assembling DESY’s XFEL Free-Electron Laser Accelerator of Elementary Particles

Metrological assurance is considered an integral part of the machine-building industry technological support. It aims is to provide accurate information necessary to achieve and evaluate the quality of the manufactured products. Metrological assurance exists at all stages of production, while the article considers the performance measurements of the part quality geometric parameters inside the production process. A special place is occupied by the measurements related to the processes of alignment and adjustment of the mutual positioning during installation and repair. The stress is placed on the specificity of measurements in large-scaled parts and systems, related to their large dimensions and own mass. A methodology for measuring and adjusting the waveguide distribution system of the DESY’S XFEL free electron laser accelerator is offered. The description of the dual-channel laser measuring system, developed at Research and Development Lab. “CMME” of TU-Sofia, as a basic element of the metrological provision of installation is presented.