Mad x analysis of the dynamic orbit bump quench test of 2010
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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

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

  • 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]


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


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


Results conclusions
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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