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Observation of Beam Instabilities with very tight Collimation
We report about the observation of instabilities in the LHC in special runs with high beta* and very tight collimation down to 2 sigma which increases the transverse impedance significantly. The losses appeared primarily on the highest intensity, non-colliding bunches which can be interpreted as evi...
| Autores principales: | , , |
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| Lenguaje: | eng |
| Publicado: |
2013
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| Materias: | |
| Acceso en línea: | http://cds.cern.ch/record/1581730 |
| Sumario: | We report about the observation of instabilities in the LHC in special runs with high beta* and very tight collimation down to 2 sigma which increases the transverse impedance significantly. The losses appeared primarily on the highest intensity, non-colliding bunches which can be interpreted as evidence for insufficient Landau damping. We describe the beam conditions, observations and possible explanations for the observed effects. |
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