First Beam Background Simulation Studies at IR1 for High Luminosity LHC

Regina Kwee-Hinzmann, Stephen Gibson, G. Bregliozzi, R Bruce, F Cerutti, L Esposito, R. Kersevan, A Lechner, N. Shetty

Research output: Chapter in Book/Report/Conference proceedingConference contribution


In the High-Luminosity Large Hadron Collider (HL-LHC) Project, the LHC will be significantly upgraded to attain a peak luminosity of up to 8.5 × 1034 cm-2s-1, thus almost an order of magnitude higher compared to the nominal machine configuration in ATLAS at IP1 and CMS at IP5. In the view of a successful machine setup as well as a successful physics programme, beam induced background studies at IP1 were performed to investigate sources of particle fluxes to the experimental area. In particular as a start of the study, two sources forming the major contributions were simulated in detail: the first one considers inelastic interactions from beam particles hitting tertiary collimators, the second one from beam interactions with residual gas-molecules in the vacuum pipe close by the experiment, referred to as beam-halo and local beam-gas, respectively. We will present these first HL-LHC background studies based on SixTrack and FLUKA simulations, highlighting the simulation setup for the design case in the HL-LHC scenario. Results of particle spectra entering the ATLAS detector region are presented for the latest study version of HL-LHC machine layout (2013).
Original languageEnglish
Title of host publication5th International Particle Accelerator Conference
Subtitle of host publication15-20 June 2014 Dresden, Germany
Chapter01 Circular and Linear Colliders A01 Hadron Colliders
Number of pages4
ISBN (Electronic)978-3-95450-132-8
Publication statusPublished - 20 Jun 2014

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