The ALICE TPC, a large 3-dimensional tracking device with fast readout for ultra-high multiplicity events

Alme, J.; Andres, Y.; Appelshäuser, H.; Bablok, S.; Bialas, N.; Bolgen, R.; Bonnes, U.; Bramm, R.; Braun‐Munzinger, P.; Campagnolo, R.; Christiansen, P.; Dobrin, A.; Engster, C.; Fehlker, D.; Foka, Yiota; Frankenfeld, U.; Gaardhøje, J. J.; Garabatos, C.; Glässel, P.; Gutierrez, C.G.; Gros, P.; Gustafsson, H. Å.; Helstrup, H.; Hoch, M.; Ivanov, M.; Janik, R.; Junique, Antoine Jean-Simon; Kalweit, Alexander Philipp; Keidel, R.; Kniege, S.; Kowalski, M.; Larsen, D.; Lesenechal, Y.; Lenoir, P.; Lindegaard, N; Lippmann, C.; Mager, M.; Mast, M.; Matyja, A.; Munkejord, M.; Musa, L.; Nielsen, B. S.; Nikolic, V.; Oeschler, H.; Olsen, Erling; Öskarsson, A.; Österman, L.; Pikna, M.; Rehman, A.; Renault, G.; Renfordt, R.; Rossegger, S.; Röhrich, D.; Røed, K.; Richter, Matthias; Rueshmann, G.; Rybicki, A.; Sann, H.; Schmidt, H. R.; Siska, Madschen Sia Mei Ol; Sitár, B.; Soegaard, Carsten; Soltveit, H. K.; Soyk, D.; Stachel, J.; Stelzer, H.; Stenlund, E.; Stock, R.; Strmeň, P.; Szarka, I.; Ullaland, K.; Vranić, D.; Veenhof, R.; Westergaard, Jytte; Wiechuła, J.; Windelband, B.

doi:10.1016/j.nima.2010.04.042

Cited by 525 publications

(294 citation statements)

References 31 publications

Supporting

Mentioning

284

Contrasting

Order By: Relevance

“…The minimum bias data sample was analyzed employing electron identification based on the information from the TPC [48]. At low transverse momentum (p T < 2 GeV=c) additional information from the TOF detector was required to improve the rejection of hadronic background.…”

Section: Discussionmentioning

confidence: 99%

Measurement of electrons from semileptonic heavy-flavor hadron decays inppcollisions ats=2.76 TeV

Abelev¹,

Adam²,

Adamová³

et al. 2015

Phys. Rev. D

Self Cite

View full text Add to dashboard Cite

The p T -differential production cross section of electrons from semileptonic decays of heavy-flavor hadrons has been measured at midrapidity in proton-proton collisions at ffiffi ffi s p ¼ 2.76 TeV in the transverse momentum range 0.5 < p T < 12 GeV=c with the ALICE detector at the LHC. The analysis was performed using minimum bias events and events triggered by the electromagnetic calorimeter. Predictions from perturbative QCD calculations agree with the data within the theoretical and experimental uncertainties.

show abstract

Section: Discussionmentioning

confidence: 99%

Measurement of electrons from semileptonic heavy-flavor hadron decays inppcollisions ats=2.76 TeV

Abelev¹,

Adam²,

Adamová³

et al. 2015

Phys. Rev. D

Self Cite

View full text Add to dashboard Cite

show abstract

“…The inner tracking system (ITS) and time projection chamber (TPC) located at midrapidity are used for particle tracking [27]. There are six layers of silicon detectors in the ITS: two silicon pixel, two silicon drift, and two silicon strip detectors.…”

Section: Experimental Setup and Data Selectionmentioning

confidence: 99%

Multipion Bose-Einstein correlations inpp,p-Pb, and Pb-Pb collisions at energies available at the CERN Large Hadron Collider

et al. 2016

Self Cite

View full text Add to dashboard Cite

Three-and four-pion Bose-Einstein correlations are presented in pp, p-Pb, and Pb-Pb collisions at the LHC. We compare our measured four-pion correlations to the expectation derived from two-and three-pion measurements. Such a comparison provides a method to search for coherent pion emission. We also present mixed-charge correlations in order to demonstrate the effectiveness of several analysis procedures such as Coulomb corrections. Same-charge four-pion correlations in pp and p-Pb appear consistent with the expectations from three-pion measurements. However, the presence of non-negligible background correlations in both systems prevent a conclusive statement. In Pb-Pb collisions, we observe a significant suppression of three-and four-pion Bose-Einstein correlations compared to expectations from two-pion measurements. There appears to be no centrality dependence of the suppression within the 0%-50% centrality interval. The origin of the suppression is not clear. However, by postulating either coherent pion emission or large multibody Coulomb effects, the suppression may be explained.

show abstract

“…Here we only briefly describe the specific detectors used in this analysis. The ALICE Time Projection Chamber (TPC) [40] is a large-volume gaseous ionization chamber detector, which was used both for tracking at midrapidity as well as for particle identification via the measurement of the specific ionization energy loss associated with each track. In addition to the TPC, the information from the ALICE Inner Tracker System (ITS) was used.…”

Section: Data Taking and Track Reconstructionmentioning

confidence: 99%

Centrality dependence of pion freeze-out radii in Pb-Pb collisions atsNN=2.76 TeV

et al. 2016

Self Cite

View full text Add to dashboard Cite

We report on the measurement of freeze-out radii for pairs of identical-charge pions measured in Pb-Pb collisions at √ s NN = 2.76 TeV as a function of collision centrality and the average transverse momentum of the pair k T . Three-dimensional sizes of the system (femtoscopic radii), as well as direction-averaged onedimensional radii are extracted. The radii decrease with k T , following a power-law behavior. This is qualitatively consistent with expectations from a collectively expanding system, produced in hydrodynamic calculations. The radii also scale linearly with dN ch /dη 1/3 . This behavior is compared to world data on femtoscopic radii in heavy-ion collisions. While the dependence is qualitatively similar to results at smaller √ s NN , a decrease in the ratio R out /R side is seen, which is in qualitative agreement with a specific prediction from hydrodynamic models: a change from inside-out to outside-in freeze-out configuration. The results provide further evidence for the production of a collective, strongly coupled system in heavy-ion collisions at the CERN Large Hadron Collider.

show abstract

The ALICE TPC, a large 3-dimensional tracking device with fast readout for ultra-high multiplicity events

Cited by 525 publications

References 31 publications

Measurement of electrons from semileptonic heavy-flavor hadron decays inppcollisions ats=2.76 TeV

Measurement of electrons from semileptonic heavy-flavor hadron decays inppcollisions ats=2.76 TeV

Multipion Bose-Einstein correlations inpp,p-Pb, and Pb-Pb collisions at energies available at the CERN Large Hadron Collider

Centrality dependence of pion freeze-out radii in Pb-Pb collisions atsNN=2.76 TeV

Contact Info

Product

Resources

About