LHCf experiment

The LHCf experiment, the smallest of the seven experiments on the LHC

Large Hadron Collider
(LHC)
LHC experiments

ATLAS	A Toroidal LHC Apparatus
CMS	Compact Muon Solenoid
LHCb	LHC-beauty
ALICE	A Large Ion Collider Experiment
TOTEM	Total Cross Section, Elastic Scattering and Diffraction Dissociation
LHCf	LHC-forward
MoEDAL	Monopole and Exotics Detector At the LHC
LHC preaccelerators
p and Pb	Linear accelerators for protons (Linac 2) and Lead (Linac 3)
(not marked)	Proton Synchrotron Booster
PS	Proton Synchrotron
SPS	Super Proton Synchrotron

The LHCf ("Large Hadron Collider forward") is a special-purpose Large Hadron Collider experiment for astroparticle (cosmic ray) physics, and one of seven detectors in the LHC accelerator at CERN. The other six are: ATLAS, ALICE, CMS, MoEDAL, TOTEM, and LHCb. LHCf is designed to study the particles generated in the "forward" region of collisions, those almost directly in line with the colliding proton beams. It therefore consists of two detectors, 140 m on either side of the interaction point. Because of this large distance, it can co-exist with a more conventional detector surrounding the interaction point, and shares the interaction point IP1 with the much larger general-purpose ATLAS experiment.

Purpose

The LHCf is intended to measure the energy and numbers of neutral pions (
π0
) produced by the collider. This will hopefully help explain the origin of ultra-high-energy cosmic rays. The results will complement other high-energy cosmic ray measurements from the Pierre Auger Observatory in Argentina, and the Telescope Array Project in Utah.

References

LHCf section on US/LHC Website
LHCf: a tiny new experiment joins the LHC, CERN Courier, Nov 1, 2006, retrieved on 2009-03-25. (Describes the location of the experiment.)
The LHCf experiment at LHC
Technical Design Report of LHCf
O Adriani et al. (LHCf Collaboration) (2008). "The LHCf detector at the CERN Large Hadron Collider". Journal of Instrumentation. 3 (8): S08006. Bibcode:2008JInst...3S8006T. doi:10.1088/1748-0221/3/08/S08006. (Full design documentation)

O Adriani et al. (LHCf Collaboration) (2013). "LHCf detector performance during the 2009-2010 LHC run". International Journal of Modern Physics A. 28 (25): 1330036-1. Bibcode:2013IJMPA..2830036A. doi:10.1142/S0217751X13300366. (Full design documentation)

European Organization for Nuclear Research (CERN)
Large Hadron Collider (LHC)	List of LHC experiments ALICE ATLAS CMS LHCb LHCf MoEDAL TOTEM
Large Electron–Positron Collider (LEP)	List of LEP experiments ALEPH DELPHI OPAL L3 LEP5 LEP6
Super Proton Synchrotron (SPS)	List of SPS experiments CNGS NA48 NA49 NA58/COMPASS NA60 NA61/SHINE NA62 UA1 UA2
Proton Synchrotron (PS)	PSB LEIR BEBC PS212/DIRAC PS215/CLOUD Gargamelle
Linear Accelerators	AWAKE CTF3 LINAC 1 LINAC 2 LINAC 3 LINAC 4
Other Accelerators	AD ISR ISOLDE ISOLTRAP MISTRAL WITCH LEAR PS210 n-TOF
Non-Accelerator Experiments	CAST OSQAR
Future projects	High Luminosity Large Hadron Collider Very Large Hadron Collider International Linear Collider Compact Linear Collider Future Circular Collider SHiP
Related	LHC@home Safety of high-energy particle collision experiments CERN Courier CERN openlab Worldwide LHC Computing Grid Microcosm exhibition Streets in CERN The Globe of Science and Innovation Particle Fever (2013 documentary)

Coordinates: 46°14′09″N 6°03′18″E / 46.23583°N 6.05500°E / 46.23583; 6.05500

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