Tesla-Type Superconducting Accelerator Niobium Resonators for Electrons and Positrons

The results reported in this collective monography are mainly focused on the applied aspect significant for the development and construction of the International Linear Electron and Positron Collider. A greater deal of study was performed by the Belarusian scientists from the National Academy of Sciences and universities of the Republic of Belarus. In PTI NASB, a hydropercussion stamping technology was developed, some niobium resonator parts were manufactured, and copper, aluminum, and superconducting niobium Tesla-type resonators were constructed by the method of electron beam welding. In SPMRS NASB, an immersion-type helium cryostat was developed and manufactured to provide the full-scale microwave tests of resonators, and the superconducting characteristics of original niobium sheets were studied in the area of a weld joint to indicate only a 5% decrease in the critical transition temperature, superconducting transition width, and critical magnetic field. In INP BSU, a measuring technique was developed and a measuring complex was constructed for studying the microwave resonator parameters and, in cooperation with SPMRS NASB, the characteristics of superconducting niobium resonators (resonant frequency, loaded quality factor, standing wave ratio, relative level of losses at the central frequency) were investigated. This monography is designed for the scientists in the field of high-energy physics, the engineers specializing in the construction of accelerator systems, doctoral and postgraduate students, and undergraduates.