Speaker
Daniele Mirarchi
Description
Frequent multiple-UFOs events in C15R8 that trigger a beam dump were often observed during the LHC commissioning in April 2015. Detailed local aperture measurements revealed the presence of an unidentified lying object that induces such losses. A quantitative and systematic overview of all the observations and measurements performed in 2015 it is shown. In conclusion the present situation and a possible strategy to deal with this object during 2016 it is discussed. An overview of beam loss behaviour along an LHC cycle it is also given.
