Development of the upgraded LHCf calorimeter with $Gd_2SiO_5$ (GSO) scintillators

The Large Hadron Collider forward (LHCf) experiment was motivated to understand the hadronic interaction relevant to the cosmic-ray air shower development. LHCf has installed compact calorimeters at the LHC and observed neutral particles emitted around zero degree during 0.9, 2.76 and 7 TeV pp colli...

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Detalles Bibliográficos
Autores principales: Makino, Yuya, Adriani, O, Berti, E, Bonechi, L, Bongi, M, Castellini, G, D’Alessandro, R, Del Prete, M, Haguenauer, M, Itow, Y, Kasahara, K, Masuda, K, Matsubayashi, E, Menjo, H, Mitsuka, G, Perrot, A L, Ricciarini, S, Sako, T, Sakurai, N, Sugiura, Y, Suzuki, T, Tamura, T, Tiberio, A, Torii, S, Tricomi, A, Turner, W C, Zhou, Q D
Lenguaje:eng
Publicado: SISSA 2014
Materias:
Detectors and Experimental Techniques
Acceso en línea:https://dx.doi.org/10.22323/1.213.0028
http://cds.cern.ch/record/2025927
Descripción
Sumario:The Large Hadron Collider forward (LHCf) experiment was motivated to understand the hadronic interaction relevant to the cosmic-ray air shower development. LHCf has installed compact calorimeters at the LHC and observed neutral particles emitted around zero degree during 0.9, 2.76 and 7 TeV pp collisions and 5 TeV pPb collisions. Since the next operation in 2015 is expected under much higher radiation dose, we have upgraded the detectors, especially their scin- tillators, to be radiation harder. In this paper, we report the performance of the new imaging sensor, GSO-bar hodoscope tested by heavy-ion beam and 50-250 GeV electron beams. As the result, shower-peak position resolution of 123 m m for 100 GeV electron induced showers was achieved that is satisfactory for our physics goal

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