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Quench thresholds for the MB and MQ using the code QP3 Arjan Verweij, TE-MPE

Quench thresholds for the MB and MQ using the code QP3 Arjan Verweij, TE-MPE. Modeling the geometry.

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Quench thresholds for the MB and MQ using the code QP3 Arjan Verweij, TE-MPE

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  1. Quench thresholds for the MB and MQ using the code QP3 Arjan Verweij, TE-MPE Verweij, TE-MPE. 26 Nov 2010, MPP meeting

  2. Modeling the geometry Considering the high contact resistance between the strands in a Rutherford cable, the response of the superconductor due to a beam loss stretching over several meters can be modeled by a single strand with a length of half the cable transposition pitch, and symmetry lines at both ends. 15.1 mm Half pitch, LP/2 Verweij, TE-MPE. 26 Nov 2010, MPP meeting

  3. MB, midplane, inner layer Variations over the cable width Verweij, TE-MPE. 26 Nov 2010, MPP meeting

  4. Results Calculations performed for: - beam dissipation distribution taken from note 422. - the midplane inner layer cable of the MB and MQ magnets. - 18 pulse lengths, from 10 ms to 84 s, including the 12 integration times used for the BLM’s. - 5 currents, corresponding to 0.45, 2, 3.5, 5, 7 TeV. Results given for: - Energy vs pulse duration - Power vs pulse duration both averaged over the width of the conductor. Verweij, TE-MPE. 26 Nov 2010, MPP meeting

  5. Verweij, TE-MPE. 26 Nov 2010, MPP meeting

  6. Verweij, TE-MPE. 26 Nov 2010, MPP meeting

  7. Verweij, TE-MPE. 26 Nov 2010, MPP meeting

  8. Verweij, TE-MPE. 26 Nov 2010, MPP meeting

  9. Next magnets: D3 & D4: do we have realistic beam loss distribution or do we use the same as MB and MQ ? and/or: MB and MQ with different beam loss distribution Verweij, TE-MPE. 26 Nov 2010, MPP meeting

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