Luminosity determination in √s = 7 TeV proton collisions using the LHCf front counter at LHC

K. Taki*, O. Adriani, L. Bonechi, M. Bongi, G. Castellini, R. D'Alessandro, K. Fukatsu, M. Haguenauer, Y. Itow, K. Kasahara, K. Kawade, D. MacIna, T. Mase, K. Masuda, H. Menjo, G. Mitsuka, Y. Muraki, K. Noda, P. Papini, A. L. PerrotS. Ricciarini, T. Sako, Y. Shimizu, K. Suzuki, T. Suzuki, T. Tamura, Shoji Torii, A. Tricomi, W. C. Turner

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    12 Citations (Scopus)


    In the Large Hadron Collider forward (LHCf) experiment, the luminosity is determined with the counting rates of detectors called Front Counter. During the LHCf physics operation at √ s = 7 TeV in 2010, two series of calibration run in the conversion factors from the counting rate to the luminosity were carried out on 26th of April and 9th of May. Using the luminosities determined in the April and May scans with 5 % and 4 % accuracy, the conversion factors were determined with 5.0 % accuracy, providing the luminosity determination at the LHCf experiment with this accuracy.

    Original languageEnglish
    Article numberT01003
    JournalJournal of Instrumentation
    Issue number1
    Publication statusPublished - 2012 Jan


    • Accelerator Subsystems and Technologies
    • Beam Optics
    • Beam-line instrumentation (beam position and profile monitors; beam-intensity monitors; bunch length monitors)
    • Scintillators, scintillation and light emission processes (solid, gas and liquid scintillators)

    ASJC Scopus subject areas

    • Instrumentation
    • Mathematical Physics


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