Speaker
Description
The Complex Bend (CB) is a novel lattice concept proposed for the NSLS-II upgrade, utilizing permanent magnets instead of traditional electromagnets. This innovative design aims to reduce horizontal emittance from 700 pm to 40 pm and increase beam energy from 3 GeV to 4 GeV, significantly enhancing beam brightness. However, as a new lattice architecture, the CB introduces substantial technical challenges in design, assembly, and verification, particularly in meeting stringent magnetic field requirements. Unlike electromagnets, permanent magnets cannot be adjusted after assembly, making precise design and fabrication critical. These challenges are further compounded by the nonlinear behavior of magnetic fields with respect to magnet position and geometry.
To address these issues, we propose integrating advanced FPGA-based hardware with EPICS-based software into a comprehensive control and tuning system. Real-time sensor data, including position, pressure, magnetic field strength, and temperature will be continuously collected and analysed. In addition, AI/ML algorithms will support optimizing magnet positioning and alignment to meet the required field specifications for each CB unit. This presentation will cover the CB mechanical assembly system, electrical hardware design, low-level control software design, and high-level tuning software implementation.
Funding Agency
Office of Science, US Department of Energy
