Macroparticle-induced losses during 6.5 TeV LHC operation

G. Papotti, M. Albert, B. Auchmann, E. B. Holzer, M. Kalliokoski, A. Lechner

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussaConference article in proceedingsScientificvertaisarvioitu

13 Sitaatiot (Scopus)


One of the major performance limitations for operating the LHC at high energy was feared to be the so called UFOs (Unidentified Falling Objects, presumably micrometer sized dust particles which lead to fast beam losses when they interact with the beam). Indeed much higher rates were observed in 2015 compared to Run 1, and 20 fills were prematurely terminated by too high losses caused by such events. Additionally they triggered a few beam induced quenches at high energy, the first in the history of the LHC. In this paper we review the latest update on the analysis of these events, e.g. the conditioning observed during the year and possible correlations with beam and machine parameters. At the same time we also review the optimization of beam loss monitor thresholds in terms of machine protection and availability.

OtsikkoIPAC 2016 - Proceedings of the 7th International Particle Accelerator Conference
KustantajaJoint Accelerator Conferences Website (JACoW)
ISBN (elektroninen)9783954501472
TilaJulkaistu - 1 tammik. 2016
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisussa
TapahtumaInternational Particle Accelerator Conference - Busan, Etelä-Korea
Kesto: 8 toukok. 201613 toukok. 2016
Konferenssinumero: 7


ConferenceInternational Particle Accelerator Conference


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