The ALICE Transition Radiation Detector: Construction, operation, and performance

ALICE Collaboration

doi:10.1016/j.nima.2017.09.028

The ALICE Transition Radiation Detector: Construction, operation, and performance

ALICE Collaboration

Physics and Astronomy

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Abstract

The Transition Radiation Detector (TRD) was designed and built to enhance the capabilities of the ALICE detector at the Large Hadron Collider (LHC). While aimed at providing electron identification and triggering, the TRD also contributes significantly to the track reconstruction and calibration in the central barrel of ALICE. In this paper the design, construction, operation, and performance of this detector are discussed. A pion rejection factor of up to 410 is achieved at a momentum of 1 GeV/c in p–Pb collisions and the resolution at high transverse momentum improves by about 40% when including the TRD information in track reconstruction. The triggering capability is demonstrated both for jet, light nuclei, and electron selection.

Original language	English
Pages (from-to)	88-127
Number of pages	40
Journal	Nuclear Instruments & Methods in Physics Research. Section A. Accelerators, Spectrometers, Detectors
Volume	881
Early online date	21 Sept 2017
DOIs	https://doi.org/10.1016/j.nima.2017.09.028
Publication status	Published - 11 Feb 2018

Keywords

Transition radiation detector
Multi-wire proportional drift chamber
Fibre/foam sandwich radiator
Xenon-based gas mixture
Tracking
Ionisation energy loss
dE/dx
TR
Electron-pion identification
Neural network
Trigger

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@article{ba80d86024d544c8a55ef24650003f99,

title = "The ALICE Transition Radiation Detector: Construction, operation, and performance",

abstract = "The Transition Radiation Detector (TRD) was designed and built to enhance the capabilities of the ALICE detector at the Large Hadron Collider (LHC). While aimed at providing electron identification and triggering, the TRD also contributes significantly to the track reconstruction and calibration in the central barrel of ALICE. In this paper the design, construction, operation, and performance of this detector are discussed. A pion rejection factor of up to 410 is achieved at a momentum of 1 GeV/c in p–Pb collisions and the resolution at high transverse momentum improves by about 40% when including the TRD information in track reconstruction. The triggering capability is demonstrated both for jet, light nuclei, and electron selection.",

keywords = "Transition radiation detector, Multi-wire proportional drift chamber, Fibre/foam sandwich radiator, Xenon-based gas mixture, Tracking, Ionisation energy loss, dE/dx, TR, Electron-pion identification, Neural network, Trigger",

author = "{ALICE Collaboration} and S. Acharya and H.A. Andrews and D. Evans and K.L. Graham and P.G. Jones and A. Jusko and M. Krivda and R. Lietava and {Villalobos Baillie}, O. and E. Willsher and N. Zardoshti",

year = "2018",

month = feb,

day = "11",

doi = "10.1016/j.nima.2017.09.028",

language = "English",

volume = "881",

pages = "88--127",

journal = "Nuclear Instruments & Methods in Physics Research. Section A. Accelerators, Spectrometers, Detectors",

issn = "0168-9002",

publisher = "Elsevier",

}

TY - JOUR

T1 - The ALICE Transition Radiation Detector: Construction, operation, and performance

AU - ALICE Collaboration

AU - Acharya, S.

AU - Andrews, H.A.

AU - Evans, D.

AU - Graham, K.L.

AU - Jones, P.G.

AU - Jusko, A.

AU - Krivda, M.

AU - Lietava, R.

AU - Villalobos Baillie, O.

AU - Willsher, E.

AU - Zardoshti, N.

PY - 2018/2/11

Y1 - 2018/2/11

N2 - The Transition Radiation Detector (TRD) was designed and built to enhance the capabilities of the ALICE detector at the Large Hadron Collider (LHC). While aimed at providing electron identification and triggering, the TRD also contributes significantly to the track reconstruction and calibration in the central barrel of ALICE. In this paper the design, construction, operation, and performance of this detector are discussed. A pion rejection factor of up to 410 is achieved at a momentum of 1 GeV/c in p–Pb collisions and the resolution at high transverse momentum improves by about 40% when including the TRD information in track reconstruction. The triggering capability is demonstrated both for jet, light nuclei, and electron selection.

AB - The Transition Radiation Detector (TRD) was designed and built to enhance the capabilities of the ALICE detector at the Large Hadron Collider (LHC). While aimed at providing electron identification and triggering, the TRD also contributes significantly to the track reconstruction and calibration in the central barrel of ALICE. In this paper the design, construction, operation, and performance of this detector are discussed. A pion rejection factor of up to 410 is achieved at a momentum of 1 GeV/c in p–Pb collisions and the resolution at high transverse momentum improves by about 40% when including the TRD information in track reconstruction. The triggering capability is demonstrated both for jet, light nuclei, and electron selection.

KW - Transition radiation detector

KW - Multi-wire proportional drift chamber

KW - Fibre/foam sandwich radiator

KW - Xenon-based gas mixture

KW - Tracking

KW - Ionisation energy loss

KW - dE/dx

KW - TR

KW - Electron-pion identification

KW - Neural network

KW - Trigger

U2 - 10.1016/j.nima.2017.09.028

DO - 10.1016/j.nima.2017.09.028

M3 - Article

SN - 0168-9002

VL - 881

SP - 88

EP - 127

JO - Nuclear Instruments & Methods in Physics Research. Section A. Accelerators, Spectrometers, Detectors

JF - Nuclear Instruments & Methods in Physics Research. Section A. Accelerators, Spectrometers, Detectors

ER -

The ALICE Transition Radiation Detector: Construction, operation, and performance

Abstract

Keywords

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