NA61 experiment

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Super Proton Synchrotron
Key SPS Experiments
UA1Underground Area 1
UA2Underground Area 2
NA31NA31 Experiment
NA32Investigation of Charm Production in Hadronic Interactions Using High-Resolution Silicon Detectors
COMPASSCommon Muon and Proton Apparatus for Structure and Spectroscopy
SHINESPS Heavy Ion and Neutrino Experiment
NA62NA62 Experiment
SPS preaccelerators
p and PbLinear accelerators for protons (Linac 2) and Lead (Linac 3)
(not marked)Proton Synchrotron Booster
PSProton Synchrotron

NA61/SHINE experiment logo

NA61/SHINE (standing for "SPS Heavy Ion and Neutrino Experiment") is a particle physics experiment at the Super Proton Synchrotron (SPS) at the European Organization for Nuclear Research (CERN).[1] The experiment studies the hadronic final states produced in interactions of various beam particles (pions, protons and beryllium, argon, and xenon nuclei) with a variety of fixed nuclear targets at the SPS energies.

About 135 physicists from 14 countries and 35 institutions work in NA61/SHINE, led by Marek Gazdzicki. NA61/SHINE is the second largest fixed target experiment at CERN.

Physics program[edit]

The NA61/SHINE physics program has been designed to measure hadron production in three different types of collisions:[1]


The NA61/SHINE experiment uses a large acceptance hadron spectrometer located on the H2 beam line in the North Area of CERN.[1] It consist of components used by the heavy ion NA49 experiment as well as those designed and constructed for NA61/SHINE.[2]

The main tracking devices are four large volume time projection chambers (TPCs), which are capable of detecting up to 70% of all charged particles created in the studied reactions. Two of them are located in the magnetic field of two super-conducting dipole magnets with maximum bending powers of 9 Tesla meters. Two others are positioned downstream of the magnets symmetrically with respect to the beam line. The setup is supplemented by time of flight detector walls, which extend particle identification to low momenta (1 GeV/c < p ). Furthermore, the Projectile Spectator Detector (a calorimeter) is positioned downstream of the time of flight detectors to measure energy of projectile fragments.

Collected data[edit]

  • proton-carbon and proton-(T2K replica target) interactions at 31 GeV/c in 2007, 2009 and 2010,
  • pion-carbon interactions at 158 GeV/c and 350 GeV/c in 2009,
  • proton-proton interactions at 13, 20, 31, 40, 80 and 158 GeV/c in 2009, 2010 and 2011,
  • beryllium-beryllium interactions at 13A, 19A, 30A 40A, 75A and 150A GeV/c in 2011,2012 and 2013,
  • argon-scandium interactions at 13A, 19A, 30A 40A, 75A and 150A GeV/c in 2015.

See also[edit]


  1. ^ a b c Antoniou, N.; et al. (NA61 Collaboration) (2006). "Study of hadron production in hadron–nucleus and nucleus–nucleus collisions at the CERN SPS". Proposal. SPSC-P-330, CERN-SPSC-2006-034. Cite journal requires |journal= (help)
  2. ^ Abgrall, N.; et al. (NA61 Collaboration) (2014). "NA61/SHINE facility at the CERN SPS: beams and detector system". Journal of Instrumentation. 9 (2–3): P06005. arXiv:1401.4699. Bibcode:2014JInst...9P6005A. doi:10.1088/1748-0221/9/06/P06005.

External links[edit]