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Nb 3 Sn Magnet Simulations

Nb 3 Sn Magnet Simulations. Superconductivity breaks down above the conductor critical temperature, causing magnet ‘quenching’, which is undesirable for accelerator operation.

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Nb 3 Sn Magnet Simulations

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  1. Nb3Sn Magnet Simulations • Superconductivity breaks down above the conductor critical temperature, causing magnet ‘quenching’, which is undesirable for accelerator operation. • The main contribution to heat load in magnets is particle debris at the interaction point. Simulations of energy deposits in magnets help determine the optimal design in this respect.

  2. FLUKA/MARS Interpolation • FLUKA & MARS used to simulate energy deposits in magnets • Results are not in useful coordinate system for magnets; need to interpolate

  3. Current Work • 2 Interpolation methods designed for both FLUKA and MARS data • bilinear method & bicubic method • Interpolation carried out in 2D on one cross section of magnets • Comparison of methods suggests maximum difference of ~10%, which is far less than the intrinsic error in either of the codes

  4. FLUKA linear interpolation FLUKA cubic interpolation Elinear-Ecubic

  5. MARS linear interpolation MARS cubic interpolation Elinear-Ecubic

  6. Future Work • Modify routine to work with 3D FLUKA output data and identify the longitudinal bin with maximal heat deposits. • Run for several coil geometries to identify those with least risk of quenching. • Find mathematical model for heat deposits based on statistical analysis of results.

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