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- Time_projection_chamber abstract "In physics, a time projection chamber (or TPC) is a particle detector invented by David R. Nygren, an American physicist, at Lawrence Berkeley Laboratory in the late 1970s. Its first major application was in the PEP-4 detector, which studied 29 GeV electron-positron collisions at the PEP storage ring at SLAC.A time projection chamber consists of a gas-filled detection volume in an electric field with a position-sensitive electron collection system. The original design (and the one most commonly used) is a cylindrical chamber with multi-wire proportional chambers (MWPC) as endplates. Along its length, the chamber is divided into halves by means of a central high-voltage electrode disc, which establishes an electric field between the center and the end plates. Furthermore, a magnetic field is often applied along the length of the cylinder, parallel to the electric field, in order to minimize the diffusion of the electrons coming from the ionization of the gas. On passing through the detector gas, a particle will produce primary ionization along its track. The z-coordinate (along the cylinder axis) is determined by measuring the drift time from the ionization event to the MWPC at the end. This is done using the usual technique of a drift chamber. The MWPC at the end is arranged with the anode wires in the azimuthal direction, θ, which provides information on the radial coordinate, r. To obtain the azimuthal direction, each cathode plane is divided into strips along the radial direction.In recent years other means of position-sensitive electron amplification and detection have become more widely used, especially in conjunction with the increased application of time projection chambers in nuclear physics. These usually combine a segmented anode plate with either just a Frisch grid or an active electron multiplication element like a Gas Electron Multiplier. These newer TPCs also depart from the traditional geometry of a cylinder with an axial field in favour of a flat geometry or a cylinder with a radial field.Earlier researchers in particle physics also usually made use of a more simplified box shaped geometry arranged directly above or below the beam line, such as in the CERN NA49 and NA35 experiments.".
- Time_projection_chamber thumbnail ALICE_TPC_1.jpg?width=300.
- Time_projection_chamber wikiPageExternalLink 29014.
- Time_projection_chamber wikiPageExternalLink index.html.
- Time_projection_chamber wikiPageID "1381856".
- Time_projection_chamber wikiPageLength "6729".
- Time_projection_chamber wikiPageOutDegree "27".
- Time_projection_chamber wikiPageRevisionID "679394673".
- Time_projection_chamber wikiPageWikiLink Anode.
- Time_projection_chamber wikiPageWikiLink Azimuth.
- Time_projection_chamber wikiPageWikiLink CERN.
- Time_projection_chamber wikiPageWikiLink CERN_Courier.
- Time_projection_chamber wikiPageWikiLink Category:Particle_detectors.
- Time_projection_chamber wikiPageWikiLink Cathode.
- Time_projection_chamber wikiPageWikiLink David_R._Nygren.
- Time_projection_chamber wikiPageWikiLink Drift_chamber.
- Time_projection_chamber wikiPageWikiLink Electric_field.
- Time_projection_chamber wikiPageWikiLink Electrode.
- Time_projection_chamber wikiPageWikiLink Electron.
- Time_projection_chamber wikiPageWikiLink Frisch_grid.
- Time_projection_chamber wikiPageWikiLink Gas.
- Time_projection_chamber wikiPageWikiLink Gas_Electron_Multiplier.
- Time_projection_chamber wikiPageWikiLink Gas_electron_multiplier.
- Time_projection_chamber wikiPageWikiLink High-voltage.
- Time_projection_chamber wikiPageWikiLink High_voltage.
- Time_projection_chamber wikiPageWikiLink Ionization.
- Time_projection_chamber wikiPageWikiLink Lawrence_Berkeley_Laboratory.
- Time_projection_chamber wikiPageWikiLink Lawrence_Berkeley_National_Laboratory.
- Time_projection_chamber wikiPageWikiLink Magnetic_field.
- Time_projection_chamber wikiPageWikiLink NA35_experiment.
- Time_projection_chamber wikiPageWikiLink NA49_experiment.
- Time_projection_chamber wikiPageWikiLink Nuclear_physics.
- Time_projection_chamber wikiPageWikiLink Particle_detector.
- Time_projection_chamber wikiPageWikiLink Physics.
- Time_projection_chamber wikiPageWikiLink SLAC_National_Accelerator_Laboratory.
- Time_projection_chamber wikiPageWikiLink Wire_chamber.
- Time_projection_chamber wikiPageWikiLink File:ALICE_TPC_1.jpg.
- Time_projection_chamber wikiPageWikiLinkText "TPC".
- Time_projection_chamber wikiPageWikiLinkText "Time Projection Chamber".
- Time_projection_chamber wikiPageWikiLinkText "Time projection chamber".
- Time_projection_chamber wikiPageWikiLinkText "time projection chamber".
- Time_projection_chamber wikiPageWikiLinkText "time projection".
- Time_projection_chamber hasPhotoCollection Time_projection_chamber.
- Time_projection_chamber wikiPageUsesTemplate Template:Cite_journal.
- Time_projection_chamber wikiPageUsesTemplate Template:Cite_web.
- Time_projection_chamber wikiPageUsesTemplate Template:Particle-stub.
- Time_projection_chamber wikiPageUsesTemplate Template:Reflist.
- Time_projection_chamber wikiPageUsesTemplate Template:See_also.
- Time_projection_chamber subject Category:Particle_detectors.
- Time_projection_chamber hypernym Detector.
- Time_projection_chamber type Instrument.
- Time_projection_chamber type Spacecraft.
- Time_projection_chamber type Detector.
- Time_projection_chamber type Instrument.
- Time_projection_chamber type Physic.
- Time_projection_chamber type Thing.
- Time_projection_chamber comment "In physics, a time projection chamber (or TPC) is a particle detector invented by David R. Nygren, an American physicist, at Lawrence Berkeley Laboratory in the late 1970s. Its first major application was in the PEP-4 detector, which studied 29 GeV electron-positron collisions at the PEP storage ring at SLAC.A time projection chamber consists of a gas-filled detection volume in an electric field with a position-sensitive electron collection system.".
- Time_projection_chamber label "Time projection chamber".
- Time_projection_chamber seeAlso Particle_detector.
- Time_projection_chamber sameAs Spurendriftkammer.
- Time_projection_chamber sameAs Chambre_à_dérive.
- Time_projection_chamber sameAs Camera_a_proiezione_temporale.
- Time_projection_chamber sameAs m.04y5b7.
- Time_projection_chamber sameAs Время-проекционная_камера.
- Time_projection_chamber sameAs Q1535336.
- Time_projection_chamber sameAs Q1535336.
- Time_projection_chamber wasDerivedFrom Time_projection_chamber?oldid=679394673.
- Time_projection_chamber depiction ALICE_TPC_1.jpg.
- Time_projection_chamber isPrimaryTopicOf Time_projection_chamber.