Alice

GIUBELLINO, Paolo

doi:10.22323/1.084.0027

Cited by 2 publications

(2 citation statements)

References 12 publications

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“…The magnet was off during this run. During the several months of running with cosmic rays in 2008 and 2009, all of the ALICE detector subsystems were extensively commissioned, calibrated and used for data taking [26][27][28][29][30]. Data were collected for an initial alignment of the parts of the detector that had sufficient exposure to the mostly vertical cosmic ray flux.…”

Section: Lhc and The Run Conditionsmentioning

confidence: 99%

First proton–proton collisions at the LHC as observed with the ALICE detector: measurement of the charged-particle pseudorapidity density at $\sqrt{s}=900$ GeV

Aamodt¹,

Abel²,

Abeysekara³

et al. 2009

Eur. Phys. J. C

138

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On 23rd November 2009, during the early commissioning of the CERN Large Hadron Collider (LHC), two counter-rotating proton bunches were circulated for the first time concurrently in the machine, at the LHC injection energy of 450 GeV per beam. Although the proton intensity was very low, with only one pilot bunch per beam, and no systematic attempt was made to optimize the collision optics, all LHC experiments reported a number of collision candidates. In the ALICE experiment, the collision region was centred very well in both the longitudinal and trans- verse directions and 284 events were recorded in coincidence with the two passing proton bunches. The events were immediately reconstructed and analyzed both online and offline. We have used these events to measure the pseudorapidity density of charged primary particles in the central region. In the range |η| < 0.5, we obtain dN ch /dη = 3.10 ± 0.13(stat.) ± 0.22(syst.) for all inelastic interactions, and dN ch /dη = 3.51 ± 0.15(stat.) ± 0.25(syst.) for nonsingle diffractive interactions. These results are consistent with previous measurements in proton-antiproton interactions at the same centre-of-mass energy at the CERN SppS collider. They also illustrate the excellent functioning and rapid progress of the LHC accelerator, and of both the hardware and software of the ALICE experiment, in this early start-up phase.

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Section: Lhc and The Run Conditionsmentioning

confidence: 99%

First proton–proton collisions at the LHC as observed with the ALICE detector: measurement of the charged-particle pseudorapidity density at $\sqrt{s}=900$ GeV

Aamodt¹,

Abel²,

Abeysekara³

et al. 2009

Eur. Phys. J. C

138

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“…In this review, the heavy ion programmes of the three experiments are presented (for recent presentations by each experiment, see [12,13,14,15]), covering the topics of inclusive particle production, correlations and heavy flavours; prospective results from the upcoming first heavy ion run of LHC are discussed. The topics of high p T hadrons, photons, jets and quarkonia are discussed in another review [16].…”

Section: Introductionmentioning

confidence: 99%

First HI at LHC - Inclusive production, correlations and heavy flavours

Ramello¹

2010

Proceedings of XXth Hadron Collider Physics Symposium — PoS(HCP2009)

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Alice

Cited by 2 publications

References 12 publications

First proton–proton collisions at the LHC as observed with the ALICE detector: measurement of the charged-particle pseudorapidity density at $\sqrt{s}=900$ GeV

First proton–proton collisions at the LHC as observed with the ALICE detector: measurement of the charged-particle pseudorapidity density at $\sqrt{s}=900$ GeV

First HI at LHC - Inclusive production, correlations and heavy flavours

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