Speaker
Description
At the end of 2018, after the completion of the LHC Phase II operation, the European Centre for Nuclear (CERN) started the HL-LHC project. In this upgrade, the particles passed through the dipole magnet needed to be corrected again in both the horizontal and vertical directions with a double-aperture orbital corrector magnet. The magnet adopts a new type of Canted-Cosine-Theta (CCT) structure, which can effectively reduce the accumulation of Lorentz force. Institute of High Energy Physics (IHEP), in collaboration with relevant domestic units, was responsible for the development and mass production of the D2 corrector magnet (MCBRD) and provided 1 set of full-scale prototype and 12 sets of formal CCT magnets for HL-LHC project.. To date, IHEP has completed the fabrication of all 12+1 sets of HL-LHC CCT superconducting magnets. Delivery of all magnets and backup coils was completed in September. During mass production, effective and universal solutions were developed to address the issues of "long training" and "de-training," enabling the large-scale application of CCT magnets in the future while ensuring the progress of the HL-LHC project. Details of the process improvements and project progress will be presented.
