MoEDAL experiment

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Large Hadron Collider
LHC experiments
ATLASA Toroidal LHC Apparatus
CMSCompact Muon Solenoid
ALICEA Large Ion Collider Experiment
TOTEMTotal Cross Section, Elastic Scattering and Diffraction Dissociation
MoEDALMonopole and Exotics Detector At the LHC
FASERForwArd Search ExpeRiment
LHC preaccelerators
p and PbLinear accelerators for protons (Linac 4) and lead (Linac 3)
(not marked)Proton Synchrotron Booster
PSProton Synchrotron
SPSSuper Proton Synchrotron

MoEDAL (Monopole and Exotics Detector at the LHC) is a particle physics experiment at the Large Hadron Collider (LHC).


MoEDAL shares the cavern at Point 8 with LHCb, and its prime goal is to directly search for the magnetic monopole (MM)[1][2][3][4][5][6][7][8] or dyon and other highly ionizing stable massive particles (SMPs) and pseudo-stable massive particles. To detect these particles, the project uses nuclear track detectors (NTDs), which suffer characteristic damage due to highly ionizing particles. As MMs and SMPs are highly ionizing, NTDs are perfectly suited for the purpose of detection.

It is an international research collaboration whose spokesperson is the University of Alberta's James Pinfold. It is the seventh experiment at the LHC, was approved and sanctioned by the CERN research board on May 2010, and started its first test deployment in January 2011.[9]

In 2012 MoEDAL accuracy surpassed accuracy of similar experiments. A new detector was installed in 2015,[10] but as of 2017 it also did not find any magnetic monopoles, setting new limits on their production cross section.[11]


  1. ^ Giacomelli, G.; Sioli, M. (2002). "Astroparticle Physics". arXiv:hep-ex/0211035.
  2. ^ Giacomelli, G.; Patrizii, L. (2001). "Magnetic Monopoles". arXiv:hep-ex/0112009.
  3. ^ Kalbfleisch, G. R.; Milton, K. A.; Strauss, M. G.; Gamberg, L.; Smith, E. H.; Luo, W. (2000). "Improved Experimental Limits on the Production of Magnetic Monopoles". Physical Review Letters. 85 (25): 5292–5295. arXiv:hep-ex/0005005. Bibcode:2000PhRvL..85.5292K. doi:10.1103/PhysRevLett.85.5292. PMID 11135979. S2CID 18155886.
  4. ^ Milton, K. A.; Kalbfleisch, G. R.; Strauss, M. G.; Gamberg, L.; Luo, W.; Smith, E. H. (2000). "New Limits on the Production of Magnetic Monopoles at Fermilab". arXiv:hep-ex/0009003.
  5. ^ Abbott, B.; et al. (D0 Collaboration) (1998). "Search for Heavy Pointlike Dirac Monopoles". Physical Review Letters. 81 (3): 524–529. arXiv:hep-ex/9803023. Bibcode:1998PhRvL..81..524A. doi:10.1103/PhysRevLett.81.524. S2CID 119510784.
  6. ^ Giacomelli, G. (1984). "Magnetic monopoles". Rivista del Nuovo Cimento. 7 (12): 1–111. arXiv:hep-ex/0002032. Bibcode:1984NCimR...7l...1G. doi:10.1007/BF02724347. S2CID 18553203.
  7. ^ Acciarri, M.; et al. (L3 Collaboration) (1995). "Search for anomalous Z → γγγ events at LEP". Physics Letters B (Submitted manuscript). 345 (4): 609–616. Bibcode:1995PhLB..345..609A. doi:10.1016/0370-2693(95)01612-T.
  8. ^ Gamberg, L.; Kalbfleisch, G. R.; Milton, K. A. (2000). "Direct and Indirect Searches for Low-Mass Magnetic Monopoles". Foundations of Physics. 30 (4): 543–565. arXiv:hep-ph/9906526. doi:10.1023/a:1003668812097. S2CID 16028624.
  9. ^ Pinfold, J. (5 May 2010). "MoEDAL becomes the LHC's magnificent seventh". CERN Courrier. Retrieved 2016-07-14.
  10. ^ Acharya, B.; et al. (MoEDAL Collaboration) (2016). "Search for magnetic monopoles with the MoEDAL prototype trapping detector in 8 TeV proton-proton collisions at the LHC". Journal of High Energy Physics. 2016 (8): 67. arXiv:1604.06645. Bibcode:2016JHEP...08..067A. doi:10.1007/JHEP08(2016)067. S2CID 5209935.
  11. ^ Acharya, B.; et al. (MoEDAL Collaboration) (2017). "Search for Magnetic Monopoles with the MoEDAL Forward Trapping Detector in 13 TeV Proton-Proton Collisions at the LHC". Physical Review Letters. 118 (6): 061801. Bibcode:2017PhRvL.118f1801A. doi:10.1103/PhysRevLett.118.061801. PMID 28234515.

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Coordinates: 46°14′09″N 6°03′18″E / 46.235753°N 6.055092°E / 46.235753; 6.055092