List of Large Hadron Collider experiments

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This is a list of experiments at CERN's Large Hadron Collider (LHC). The LHC is the most energetic particle collider in the world, and is used to test the accuracy of the Standard Model, and to look for physics beyond the Standard Model such as supersymmetry, extra dimensions, and others.

Contents

The list is first compiled from the SPIRES database, then missing information is retrieved from the online version CERN's Grey Book . The most specific information of the two is kept, e.g. if the SPIRES database lists December 2008, while the Grey Book lists 22 December 2008, the Grey Book entry is shown. When there is a conflict between the SPIRES database and the Grey Book, the SPIRES database information is listed, unless otherwise noted.

Large Hadron Collider experiments

LHC experiments
ExperimentLocationSpokespersonDescriptionProposedApprovedBeganCompletedLinkWebsite
ALICE IP2 Luciano Musa [1] Alarge ion collider experiment: specialized on heavy ion collisions, with proton-proton collisions as reference ??6 Feb 199730 March 2010N/A Inspire

Grey Book

Website
ATLAS IP1Andreas Hoecker [2] Atoroidal LHC apparatus: studying the Standard Model and searching for Beyond Standard Model signatures primarily with proton collisionsDec 199431 Jan 199630 March 2010N/A Inspire
Grey Book
Website
CMS IP5 Luca Malgeri [3] Compact muon solenoid: same purpose as for ATLASOct 199231 Jan 199630 March 2010N/A Inspire
Grey Book
Website
LHCb IP8 Giovanni Passaleva [4] LHCbeauty experiment: studying primarily flavour physics with B-hadrons such as asymmetries and CP violations ??17 Sep 199830 March 2010N/A Inspire
Grey Book
Website
LHCf IP1 Yasushi Muraki [5] LHC-forward: measurement of particles travelling close to the direction of the beam, simulating cosmic rays ??12 May 200430 March 2010N/A Inspire

Grey Book

Website
MATHUSLA IP1Henry LubattiMAssive Timing Hodoscope for Ultra-Stable neutraL pArticles: Search for long lived particles and neutrinos at the LHC2016 [6] 20172018 [7] [8] N/A Inspire Inspire Website
MilliQan IP5Christopher S. Hill, Andy HaasSearch for milli-charged particles at the LHC15 July 2016 [9] 2016Fall 2017 [10] [11] N/A Inspire

Inspire

Website
MOEDAL IP8 James L. Pinfold [12] Monopole and exotic particle detector at the LHCJuly 2009 [13] 2 December 2009 [14] January 2011 [15] N/A Inspire

Grey Book

Website
TOTEM IP5 Simone Giani [16] Total cross section, elastic scattering and diffraction dissociation at the LHC199918 May 19992010N/A Inspire
Grey Book
Website
FASER IP1 Jamie Boyd, Jonathan Feng [17] ForwArd Search ExpeRiment: Search for long lived particles and neutrinos at the LHC20175 March 2019 [18] N/AN/A Inspire
Grey Book
Website

MilliQan, MATHUSLA, FASER, LHCf, MOEDAL and TOTEM are much smaller than the other four experiments. Each is close to one of the larger experiments and uses the same collision point.

Notes

1. ^ Only a prototype has been approved and constructed so far, much smaller than the full proposed detector

See also

Experiments
Facilities

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CERN European particle physics research organisation based in Geneva, Switzerland

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Large Hadron Collider Particle collider

The Large Hadron Collider (LHC) is the world's largest and highest-energy particle collider. It was built by the European Organization for Nuclear Research (CERN) between 1998 and 2008 in collaboration with over 10,000 scientists and hundreds of universities and laboratories, as well as more than 100 countries. It lies in a tunnel 27 kilometres (17 mi) in circumference and as deep as 175 metres (574 ft) beneath the France–Switzerland border near Geneva.

Large Electron–Positron Collider Former particle accelerator at CERN, Geneva, Switzerland

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Super Proton Synchrotron Particle accelerator at CERN, Switzerland

The Super Proton Synchrotron (SPS) is a particle accelerator of the synchrotron type at CERN. It is housed in a circular tunnel, 6.9 kilometres (4.3 mi) in circumference, straddling the border of France and Switzerland near Geneva, Switzerland.

TOTEM experiment

The TOTEM experiment is one of the eight detector experiments at CERN's Large Hadron Collider. The other seven are: ATLAS, ALICE, CMS, LHCb, LHCf, MoEDAL and FASER. It shares an interaction point with CMS. The detector aims at measurement of total cross section, elastic scattering, and diffraction processes. The primary instrument of the detector is referred to as a Roman pot. In December 2020, the D0 and TOTEM Collaborations made public the odderon discovery based on a purely data driven approach in a CERN and Fermilab approved preprint that was later published in Physical Review Letters. In this experimental observation, the TOTEM proton-proton data in the region of the diffractive minimuma and maximum was extrapolated from 13, 8, 7 and 2.76 TeV to 1.96 TeV and compared this to D0 data at 1.96 TeV in the same t-range giving an odderon significance of 3.4 σ. When combined with TOTEM experimental data at 13 TeV at small scattering angles providing an odderon significance of 3.4 - 4.6 σ, the combination resulted in an odderon significance of at least 5.2 σ.

Intersecting Storage Rings Former CERN infrastructure

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The High Luminosity Large Hadron Collider is an upgrade to the Large Hadron Collider, operated by the European Organization for Nuclear Research (CERN), located at the French-Swiss border near Geneva. From 2011 to 2020, the project was led by Lucio Rossi. In 2020 the lead role was taken up by Oliver Brüning.

LHCf experiment

The LHCf is a special-purpose Large Hadron Collider experiment for astroparticle physics, and one of eight detectors in the LHC accelerator at CERN. The other seven are: ATLAS, ALICE, CMS, MoEDAL, TOTEM, LHCb and FASER. 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.

MoEDAL experiment

MoEDAL is a particle physics experiment at the Large Hadron Collider (LHC).

A Muon Collider is a proposed particle accelerator facility in its conceptual design stage that collides muon beams for precision studies of the Standard Model and for direct searches of new physics. Muons belong to the second generation of leptons, they are typically produced in high-energy collisions either naturally or artificially. The main challenge of such a collider is the short lifetime of muons.

Future Circular Collider Proposed post-LHC particle accelerator at CERN, Geneva, Switzerland

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FASER experiment 2022 particle physics experiment at the Large Hadron Collider at CERN

FASER is planned to be one of the eight particle physics experiments in 2022 at the Large Hadron Collider at CERN. It is designed to both search for new light and weakly coupled elementary particles, and to study the interactions of high-energy neutrinos.

Stable massive particles (SMPs) are hypothetical particles that are long-lived and have appreciable mass. The precise definition varies depending on the different experimental or observational searches. SMPs may be defined as being at least as massive as electrons, and not decaying during its passage through a detector. They can be neutral or charged or carry a fractional charge, and interact with matter through gravitational force, strong force, weak force, electromagnetic force or any unknown force.

Fixed-target experiment

A fixed-target experiment in particle physics is an experiment in which a beam of accelerated particles is collided with a stationary target. The moving beam consists of charged particles such as electrons or protons and is accelerated to relativistic speed. The fixed target can be a solid block or a liquid or a gaseous medium. These experiments are distinct from the collider-type experiments in which two moving particle beams are accelerated and collided. The famous Rutherford gold foil experiment, performed between 1908 and 1913, was one of the first fixed-target experiments, in which the alpha particles were targeted at a thin gold foil.

Scattering and Neutrino Detector

The Scattering and Neutrino Detetcor (SND) at Large Hadron Collider (LHC), CERN, is currently being built for the detection of the collider neutrinos. The primary goal of SND is to measure the p+p --> +X process and search for the feebly interacting particles. It will be operational from 2022, during the LHC-Run 3 (2022-2024). SND will be installed in an empty tunnel- TI18 that links the LHC and Super Proton Synchrotron, 480m away from the ATLAS experiment interaction point in the fast forward region and along the beam collision axis.

The MilliQan experiment is a small-scale detector experiment at CERN's Large Hadron Collider (LHC). The goal of the MilliQan experiment is to detect millicharged particles: particles with charges much smaller than that of the electron. These particles are motivated by the existence of a dark photon, and discovery of millicharged particles would provide a first probe into the dark sector. The MilliQan prototype detector collected data during LHC Run 2 in 2018 and set competitive constraints on millicharged particle charges and masses. The upgraded Run 3 MilliQan detectors are scheduled to be installed in 2022

References

  1. Experiment's detail
  2. ATLAS Experiment's details (Accessed 2021-09-14)
  3. Experiment's detail
  4. LHCb Organization
  5. Experiment's detail
  6. Chou, John Paul; Curtin, David; Lubatti, H.J. (2017). "New detectors to explore the lifetime frontier". Physics Letters B. 767: 29–36. arXiv: 1606.06298 . Bibcode:2017PhLB..767...29C. doi:10.1016/j.physletb.2017.01.043. S2CID   118621993.
  7. https://www.physics.utoronto.ca/~mdiamond/MATHUSLA_seminar.pdf [ bare URL PDF ]
  8. Alidra, Maf; Alpigiani, Cristiano; Ball, Austin; Camarri, Paolo; Cardarelli, Roberto; Chou, John Paul; Curtin, David; Etzion, Erez; Garabaglu, Ali; Gomes, Brandon; Guida, Roberto; Kuykendall, W.; Kvam, Audrey; Lazic, Dragoslav; Lubatti, H.J.; Marsella, Giovanni; Mizrachi, Gilad; Policicchio, Antonio; Proffitt, Mason; Rothberg, Joe; Santonico, Rinaldo; Silver, Yiftah; Thayil, Steffie Ann; Torro-Pastor, Emma; Watts, Gordon; Young, Charles (2021). "The MATHUSLA test stand". Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 985: 164661. arXiv: 2005.02018 . Bibcode:2021NIMPA.98564661A. doi:10.1016/j.nima.2020.164661. S2CID   218502711.
  9. Ball, Austin; Brooke, Jim; Campagnari, Claudio; Albert De Roeck; Francis, Brian; Gastal, Martin; Golf, Frank; Goldstein, Joel; Haas, Andy; Hill, Christopher S.; Izaguirre, Eder; Kaplan, Benjamin; Magill, Gabriel; Marsh, Bennett; Miller, David; Prins, Theo; Shakeshaft, Harry; Stuart, David; Swiatlowski, Max; Yavin, Itay (2016). "A Letter of Intent to Install a milli-charged Particle Detector at LHC P5". arXiv: 1607.04669 [physics.ins-det].
  10. https://indico.cern.ch/event/706741/contributions/3017531/attachments/1667859/2674500/Haas_milliQan_PBC_cern_6-14-2018.pdf [ bare URL PDF ]
  11. Ball, A.; et al. (2020). "Search for millicharged particles in proton-proton collisions at s=13 TeV". Physical Review D. 102 (3): 032002. arXiv: 2005.06518 . doi:10.1103/PhysRevD.102.032002. S2CID   218628786.
  12. Experiment's detail
  13. James Pinfold (2010). "The MoEDAL TDR" . Retrieved 2010-04-11.
  14. James Pinfold (2010). "CERN Research Board Approves the MoEDAL Experiment". The MoEDAL Milestone Blog. Retrieved 2010-04-11.
  15. CERN Courier, "MoEDAL becomes the LHC's magnificent seventh", 5 May 2010
  16. Experiment's detail
  17. Experiment's detail
  18. Cristina Agrigoroae (2019). "FASER: CERN approves new experiment to look for long-lived, exotic particles" . Retrieved 2019-03-07.