@article{e5d5df34bcdb462881f4a3d314a3647d,
title = "Emulating the impact of additional proton–proton interactions in the ATLAS simulation by presampling sets of inelastic Monte Carlo events",
abstract = "The accurate simulation of additional interactions at the ATLAS experiment for the analysis of proton–proton collisions delivered by the Large Hadron Collider presents a significant challenge to the computing resources. During the LHC Run 2 (2015–2018), there were up to 70 inelastic interactions per bunch crossing, which need to be accounted for in Monte Carlo (MC) production. In this document, a new method to account for these additional interactions in the simulation chain is described. Instead of sampling the inelastic interactions and adding their energy deposits to a hard-scatter interaction one-by-one, the inelastic interactions are presampled, independent of the hard scatter, and stored as combined events. Consequently, for each hard-scatter interaction, only one such presampled event needs to be added as part of the simulation chain. For the Run 2 simulation chain, with an average of 35 interactions per bunch crossing, this new method provides a substantial reduction in MC production CPU needs of around 20%, while reproducing the properties of the reconstructed quantities relevant for physics analyses with good accuracy.",
author = "G. Aad and B. Abbott and Abbott, {D. C.} and Abud, {A. Abed} and K. Abeling and Abhayasinghe, {D. K.} and Abidi, {S. H.} and AbouZeid, {O. S.} and Abraham, {N. L.} and H. Abramowicz and H. Abreu and Y. Abulaiti and Hoffman, {A. C.Abusleme} and Acharya, {B. S.} and B. Achkar and L. Adam and Bourdarios, {C. Adam} and L. Adamczyk and L. Adamek and J. Adelman and A. Adiguzel and S. Adorni and T. Adye and Affolder, {A. A.} and Y. Afik and C. Agapopoulou and Agaras, {M. N.} and A. Aggarwal and C. Agheorghiesei and Aguilar-Saavedra, {J. A.} and A. Ahmad and F. Ahmadov and Ahmed, {W. S.} and X. Ai and G. Aielli and S. Akatsuka and M. Akbiyik and {\AA}kesson, {T. P.A.} and E. Akilli and Akimov, {A. V.} and Khoury, {K. Al} and Alberghi, {G. L.} and J. Albert and Verzini, {M. J.Alconada} and S. Alderweireldt and M. Aleksa and Aleksandrov, {I. N.} and C. Alexa and Citron, {Z. H.} and B. Parida and L. Barak and U. Barron and G. Bella and Y. Benhammou and Biswal, {J. P.} and B. Chen and H. Cohen and E. Etzion and G. Koren and O. Kuprash and Lutz, {M. S.} and Dominguez, {L. Pascual} and D. Reikher and A. Soffer and Tamir, {N. M.} and D. Vannicola and S. Istin and D. Melini and Seabra, {L. F.Oleiro} and S. Tarem and Y. Rozen and M. Morgenstern and {Kajomovitz must}, E. and E. Bakos and P. Balek and M. Birman and Y. Cao and J. Chen and J. Chen and J. Chen and E. Duchovni and M. Dumancic and S. Ganguly and A. Ghosh and A. Ghosh and E. Gross and Y. Guo and N. Hod and A. Ivina and A. Kahn and M. Kumar and D. Levin and Levinson, {L. J.} and Li, {C. Q.} and H. Li and H. Li and J. Li and M. Li and X. Li and L. Longo and Ma, {L. L.} and G. Mikenberg and A. Milov and S. Mondal and Ng, {C. W.} and I. Ravinovich and Robertson, {S. H.} and A. Roy and Renous, {D. Shaked} and M. Shapiro and J. Shlomi and S. Singh and S. Sinha and V. Smakhtin and S. Solomon and D. Turgeman and H. Wang and J. Wang and Wang, {S. M.} and Wang, {S. M.} and Y. Wang and Waugh, {B. M.} and J. Wu and X. Wu and D. Xu and S. Yang and Y. Yang and G. Zhang and Z. Zhang and Y. Zhou",
note = "Publisher Copyright: {\textcopyright} 2022, The Author(s).",
year = "2022",
month = dec,
day = "1",
doi = "https://doi.org/10.1007/s41781-021-00062-2",
language = "American English",
volume = "6",
journal = "Computing and Software for Big Science",
issn = "2510-2036",
publisher = "Springer Nature",
number = "1",
}