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MAD-X Analysis of the Dynamic Orbit-Bump Quench Test of 2010

MAD-X Analysis of the Dynamic Orbit-Bump Quench Test of 2010. V. Chetvertkova, TE-MPE-PE. QTAWG Meeting, 28-03-2014. Experiment. Date: 17.10.2010 (20:23) Beam: 2 Energy: 3.5 TeV Bump orientation: vertical Increasing bump amplitude Maximum deflection: 15 mm Intensity: 1.85e10 protons

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MAD-X Analysis of the Dynamic Orbit-Bump Quench Test of 2010

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  1. MAD-X Analysis of the Dynamic Orbit-Bump Quench Test of 2010 V. Chetvertkova, TE-MPE-PE QTAWG Meeting, 28-03-2014

  2. Experiment • Date: 17.10.2010 (20:23) • Beam: 2 • Energy: 3.5 TeV • Bump orientation: vertical • Increasing bump amplitude • Maximum deflection: 15 mm • Intensity: 1.85e10 protons • Lost on the MQ: 58% • Duration: ~6 s [A. Priebe et al., Beam-induced quench test of the LHC main quadrupole, CERN-ATS-2011-058]

  3. Simulations MCBV.14R2 MQ.14R2 0.647 0.369 3.1 18.375 16.331 • Primary bump amplitude: 16.331 mm • Increase of the bump amplitude every 100 turns

  4. Dependence on the speed of increasing the bump amplitude Beam size: εx= 6.1e-6 εy= 7.1e-6 Bump amplitude: 3.5σexp Tune: Qx = 64.28 Qy = 59.31 Conclusion: Bump amplitude does not influence the longitudinal distribution

  5. Results & Conclusions • The beam loss is distributed between the MCBV.14R2-MS.14R2-MQ.14R2. • Impact angle varies within the magnets – more statistics is needed.

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