Recent News
Apr, 2017
Performance paper of the upgraded detectors was published in JINST. (JINST 12, P03023 (2017)).
Aug, 2016
Our pi0 analyses paper using RUN1 data is approved for publication in PRD. (PRD 94, 032007 (2016)).
Mar, 2016
Operation of LHCf during 8.1 TeV p-Pb collisions in 2016 is approved in LHCC (CERN-LHCC-2016-003).
Nov. 1, 2015
A paper for forward neutron spectra observed in 7TeV p-p collisions is published on Physics Letters B 750 (2015) 360-366.
Aug, 2015
First results of joint analysis for ATLAS-LHCf common data were released as ATLAS PUB note. (ATL-PHYS-PUB-2015-038).
Jun. 25, 2015
Data taking of LHCf with 13TeV p-p collisions from 10 to 13 June was successful. LHCf detectors were already removed from the LHC tunnel on 15 June.
Nov. 28, 2014
Installation of LHCf detectors (Arm1 and Arm2) for LHC 13TeV run has been finished successfully.
Jun. 23, 2014
"Transverse momentum distribution and nuclear modification factor of forward neutral pion in proton--lead collisions at \sqrt sNN = 5.02 TeV" is online on Phys. Rev. C 89 065209 (2014). (arXiv:1403.7845)
Mar. 26, 2014
"The performance of the LHCf detector for hadronic showers" is online on JINST 9 P03016 (2014). (arXiv:1312.5950)
Oct. 10, 2013
"LHCf detector performance during the 2009-2010 LHC run" is online on Int. J. Mod. Phys. A, 28 (2013).
July. 4, 2013
Recent results from LHCf have been presented at ICRC2013.
Feb. 4, 2013
Data was taken with P-Pb collision at √sNN = 4TeV ( Jan 20 to Feb 4).
Nov. 2, 2012
"Measurement of forward neutral pion transverse momentum spectra for √s = 7 TeV proton-proton collisions at LHC (O. Adriani et al, The LHCf Collaboration)" is online on Phys. Rev. D 86, 092001 (2012).(arXiv:1205.4578)
Sep. 16 - Sep. 21, 2012
Recent results from LHCf have been presented at ISMD2012. International Symposium on Multiparticle Dynamics (ISMD 2012)
E-Mail : lhcf@stelab.nagoya-u.ac.jp
Jun. 25, 2015
With a quick analysis during 13TeV data taking, LHCf clearly identified pi0 and eta mesons in the photon pair data samples.

Welcome to LHCf

LHCf is an experiment currently installed at CERN at the LHC complex. It consists of two small calorimeters each one placed 140 meters away from the ATLAS interaction point. Their purpose is to study forward production of neutral particles in proton-proton collisions at extremely low angles. The results will provide invaluable inputs to the many air-shower Monte Carlo codes currently used for modeling cosmic rays interactions in the Earth atmosphere. Depending on machine start up, data were taken from 900 GeV in the centre of mass up to 13 TeV (laboratory equivalent collision energy of 1017eV), thus covering an energy range up to and beyond the "knee" of the cosmic ray spectrum.