The NA50 segmented target and vertex recognition system

F. Bellaiche; B. Cheynis; D. Contardo; O. Drapier; J. Y. Grossiord; A. Guichard; R. Haroutunian; M. Jacquin; F. Ohlsson-Malek; J. R. Pizzi

doi:10.1016/S0168-9002(97)00748-1

The NA50 segmented target and vertex recognition system

F. Bellaiche
, B. Cheynis
, D. Contardo
, O. Drapier
, J. Y. Grossiord
, A. Guichard
, R. Haroutunian
, M. Jacquin
, F. Ohlsson-Malek
, J. R. Pizzi

IGFL, Université de Lyon, Université Lyon 1

Research output: Contribution to journal › Article › peer-review

Abstract

The NA50 segmented target and vertex recognition system is described. The segmented target consists of 7 sub-targets of 1-2 mm thickness. The vertex recognition system used to determine the sub-target where an interaction has occured is based upon quartz elements which produce Cerenkov light when traversed by charged particles from the interaction. The geometrical arrangement of the quartz elements has been optimized for vertex recognition in ²⁰⁸Pb-Pb collisions at 158 GeV/nucleon. A simple algorithm provides a vertex recognition efficiency of better than 85% for dimuon trigger events collected with a 1 mm sub-target set-up. A method for recognizing interactions of projectile fragments (nuclei and/or groups of nucleons) is presented. The segmented target allows a large target thickness which together with a high beam intensity (≈ 10⁷ ions/s) enables high statistics measurements.

Original language	English
Pages (from-to)	180-188
Number of pages	9
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	398
Issue number	2-3
DOIs	https://doi.org/10.1016/S0168-9002(97)00748-1
Publication status	Published - 21 Oct 1997
Externally published	Yes

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Bellaiche, F., Cheynis, B., Contardo, D., Drapier, O., Grossiord, J. Y., Guichard, A., Haroutunian, R., Jacquin, M., Ohlsson-Malek, F., & Pizzi, J. R. (1997). The NA50 segmented target and vertex recognition system. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 398(2-3), 180-188. https://doi.org/10.1016/S0168-9002(97)00748-1

@article{13d54a6ac24041e48cb8bbcbd73c9558,

title = "The NA50 segmented target and vertex recognition system",

abstract = "The NA50 segmented target and vertex recognition system is described. The segmented target consists of 7 sub-targets of 1-2 mm thickness. The vertex recognition system used to determine the sub-target where an interaction has occured is based upon quartz elements which produce Cerenkov light when traversed by charged particles from the interaction. The geometrical arrangement of the quartz elements has been optimized for vertex recognition in 208Pb-Pb collisions at 158 GeV/nucleon. A simple algorithm provides a vertex recognition efficiency of better than 85\% for dimuon trigger events collected with a 1 mm sub-target set-up. A method for recognizing interactions of projectile fragments (nuclei and/or groups of nucleons) is presented. The segmented target allows a large target thickness which together with a high beam intensity (≈ 107 ions/s) enables high statistics measurements.",

author = "F. Bellaiche and B. Cheynis and D. Contardo and O. Drapier and Grossiord, \{J. Y.\} and A. Guichard and R. Haroutunian and M. Jacquin and F. Ohlsson-Malek and Pizzi, \{J. R.\}",

year = "1997",

month = oct,

day = "21",

doi = "10.1016/S0168-9002(97)00748-1",

language = "English",

volume = "398",

pages = "180--188",

journal = "Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment",

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Bellaiche, F, Cheynis, B, Contardo, D, Drapier, O, Grossiord, JY, Guichard, A, Haroutunian, R, Jacquin, M, Ohlsson-Malek, F & Pizzi, JR 1997, 'The NA50 segmented target and vertex recognition system', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 398, no. 2-3, pp. 180-188. https://doi.org/10.1016/S0168-9002(97)00748-1

TY - JOUR

T1 - The NA50 segmented target and vertex recognition system

AU - Bellaiche, F.

AU - Cheynis, B.

AU - Contardo, D.

AU - Drapier, O.

AU - Grossiord, J. Y.

AU - Guichard, A.

AU - Haroutunian, R.

AU - Jacquin, M.

AU - Ohlsson-Malek, F.

AU - Pizzi, J. R.

PY - 1997/10/21

Y1 - 1997/10/21

N2 - The NA50 segmented target and vertex recognition system is described. The segmented target consists of 7 sub-targets of 1-2 mm thickness. The vertex recognition system used to determine the sub-target where an interaction has occured is based upon quartz elements which produce Cerenkov light when traversed by charged particles from the interaction. The geometrical arrangement of the quartz elements has been optimized for vertex recognition in 208Pb-Pb collisions at 158 GeV/nucleon. A simple algorithm provides a vertex recognition efficiency of better than 85% for dimuon trigger events collected with a 1 mm sub-target set-up. A method for recognizing interactions of projectile fragments (nuclei and/or groups of nucleons) is presented. The segmented target allows a large target thickness which together with a high beam intensity (≈ 107 ions/s) enables high statistics measurements.

AB - The NA50 segmented target and vertex recognition system is described. The segmented target consists of 7 sub-targets of 1-2 mm thickness. The vertex recognition system used to determine the sub-target where an interaction has occured is based upon quartz elements which produce Cerenkov light when traversed by charged particles from the interaction. The geometrical arrangement of the quartz elements has been optimized for vertex recognition in 208Pb-Pb collisions at 158 GeV/nucleon. A simple algorithm provides a vertex recognition efficiency of better than 85% for dimuon trigger events collected with a 1 mm sub-target set-up. A method for recognizing interactions of projectile fragments (nuclei and/or groups of nucleons) is presented. The segmented target allows a large target thickness which together with a high beam intensity (≈ 107 ions/s) enables high statistics measurements.

U2 - 10.1016/S0168-9002(97)00748-1

DO - 10.1016/S0168-9002(97)00748-1

M3 - Article

AN - SCOPUS:0031247851

SN - 0168-9002

VL - 398

SP - 180

EP - 188

JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

IS - 2-3

ER -

The NA50 segmented target and vertex recognition system

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