Author: Mether, L.
Paper Title Page
WEP1WA01
Simulations of Electron-Ion Effects and Relevance to LHC Experience in 2017  
 
  • L. Mether
    EPFL, Lausanne, Switzerland
  • G. Iadarola, G. Rumolo
    CERN, Geneva, Switzerland
 
  Operation of the LHC in 2017 was severely affected by recurrent beam aborts triggered by beam losses in one of its arc cells. The losses were correlated with quickly developing transverse coherent oscillations, which in most cases caused the beam dumps due to particle losses in the cleaning insertions. The events are thought to have been caused by air that was frozen on the beam screen surface in the concerned location, and which through a complex sequence of events could give rise to a localized high gas density. In this contribution we describe efforts towards modelling the observed coherent effects through the interaction of the beam with the induced pressure bump.  
slides icon Slides WEP1WA01 [10.532 MB]  
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