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Title Performance study for the photon measurements of the upgraded LHCf calorimeters with Gd$_2$SiO$_5$ (GSO) scintillators
Author(s) Makino, Y (Nagoya U., ISEE) ; Tiberio, A (INFN, Florence ; U. Florence (main)) ; Adriani, O (INFN, Florence ; U. Florence (main)) ; Berti, E (INFN, Florence ; U. Florence (main)) ; Bonechi, L (INFN, Florence) ; Bongi, M (INFN, Florence ; U. Florence (main)) ; Caccia, Z (INFN, Catania) ; D'Alessandro, R (INFN, Florence ; U. Florence (main)) ; Del Prete, M (INFN, Florence ; U. Florence (main)) ; Detti, S (INFN, Florence) ; Haguenauer, M (Ec. Polytech., Palaiseau (main)) ; Itow, Y (Nagoya U., ISEE ; KMI, Nagoya) ; Iwata, T (Waseda U., RISE) ; Kasahara, K (Waseda U., RISE) ; Masuda, K (Nagoya U., ISEE) ; Matsubayashi, E (Nagoya U., ISEE) ; Menjo, H (Nagoya U. (main)) ; Mitsuka, G (U. Florence (main)) ; Muraki, Y (Nagoya U., ISEE) ; Papini, P (INFN, Florence) ; Ricciarini, S (INFN, Florence ; IFAC, Florence) ; Sako, T (Nagoya U., ISEE ; KMI, Nagoya) ; Sakurai, N (Tokushima U.) ; Suzuki, T (Waseda U., RISE) ; Tamura, T (Kanagawa U.) ; Torii, S (Waseda U., RISE) ; Tricomi, A (INFN, Catania ; U. Catania (main)) ; Turner, W C (LBNL, Berkeley) ; Ueno, M (Nagoya U., ISEE) ; Zhou, Q D (Nagoya U., ISEE)
Imprint 22 p.
In: JINST 12 (2017) P03023
DOI 10.1088/1748-0221/12/03/P03023
Subject category Detectors and Experimental Techniques
Accelerator/Facility, Experiment CERN SPS
Test beam H4
Abstract The Large Hadron Collider forward (LHCf) experiment was motivated to understand the hadronic interaction processes relevant to cosmic-ray air shower development. We have developed radiation-hard detectors with the use of Gd$_2$SiO$_5$ (GSO) scintillators for proton-proton $\sqrt{s} = 13$ TeV collisions. Calibration of such detectors for photon measurement has been completed at the CERN SPS T2-H4 line in 2015 using electron beams of 100–250 GeV and muon beams of 150–250 GeV. After the channel-by-channel absolute energy calibration, the energy resolution of the calorimeters is confirmed to be better than 3% for electrons with energy above 100 GeV. The position dependence of the energy scale of the calorimeters was reduced to the level of 1% after the corrections for scintillator nonuniformity and the shower leakage effect. The position resolution of the new shower imaging detector, a GSO-bar hodoscope interleaved in the calorimeter, was 100 $\mu$m for 200 GeV electrons. The experimental results are well explained by Monte Carlo simulations. We have confirmed that the new detectors meet the requirement of the LHCf experiment at $\sqrt{s} = 13$ TeV.
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 Registre creat el 2019-09-20, darrera modificació el 2019-09-23