Speaker
Description
ReBCO coated conductors are promising for compact high-field bending magnets and are being considered for use in the Hefei Advanced Light Facility (HALF) to enhance the photon energy from bending-magnet radiation. However, screening-current effects induced during excitation remain an important issue for such magnets. In this work, these effects are investigated in the proposed bending magnet using the H-formulation. Several current excitation profiles with different ramping and holding stages are compared. The results show that the charging history strongly affects screening-current relaxation and the induced-field distribution. Under the present conditions, final holding at the operating current is more effective than a slow final ramp or distributed intermediate holding, providing guidance for optimizing charging schemes for future ReBCO bending magnets.
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