Measurement of the intrinsic hadronic contamination in the NA64−e high-purity e+/e− beam at CERN
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Archivos
Fecha
2023-12
Profesor/a Guía
Facultad/escuela
Idioma
en
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Editor
Elsevier B.V.
Nombre de Curso
Licencia CC
CC BY-NC-ND 4.0 CÓDIGO LEGAL Atribución-NoComercial-SinDerivadas 4.0 Internacional
Licencia CC
https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode.es
Resumen
We present the measurement of the intrinsic hadronic contamination at the CERN SPS H4 beamline configured to transport electrons and positrons at 100 GeV/c. The analysis, performed using data collected by the NA64-e experiment in 2022, is based on calorimetric measurements, exploiting the different interaction mechanisms of electrons and hadrons in the NA64 detector. We determined the contamination by comparing the results obtained using the nominal electron/positron beamline configuration with those from a dedicated setup, in which only hadrons impinged on the detector. We also obtained an estimate of the relative protons, anti-protons and pions yield by exploiting the different absorption probabilities of these particles in matter. We cross-checked our results with a dedicated Monte Carlo simulation for the hadron production at the primary T2 target, finding a good agreement with the experimental measurements.
Notas
Indexación: Scopus
Palabras clave
H4 beamline, Hadron contamination, Light dark matter, Missing-energy experiment
Citación
Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment Volume 1057 December 2023 Article number 168776
DOI
10.1016/j.nima.2023.168776