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Dresden 2017 – scientific programme

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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 6: Poster Session

AKBP 6.11: Poster

Wednesday, March 22, 2017, 18:30–20:00, P4

Unidentified Falling Objects (UFOs) in the LHC to be identified — •Laura Grob — CERN, Geneva, Switzerland — Technische Universität Darmstadt, Germany

Macroparticles entering the beam and hence causing accidental beam losses have shown to be a limitation to beam availability in the LHC. This macroparticle-beam-interaction first observed in the LHC seems to affect also other positive beam facilities such as SuperKEKb. A more detailed knowledge about the involved particles is needed to understand their origin and the mechanism how they enter the positively charged beam. Another objective of the on-going research is to find suitable mitigation methods. In an experimental intervention on a dipole which is taken out from the LHC during the winter shutdown 2016/2017, dust samples will be extracted from this magnet. These samples will then be analyzed for their sizes and chemical composition to help explain the so-called UFOs (unidentified falling objects) in the LHC.

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