The performance of the LHCf detector for hadronic showers

Kawade, K.; Adriani, O.; Bonechi, L.; Bongi, M.; Castellini, G.; D’Alessandro, R.; Prete, M. Del; Haguenauer, M.; Itow, Y.; Kasahara, K.; Makino, Yuya; Masuda, K.; Matsubayashi, E.; Menjo, H.; Mitsuka, G.; Muraki, Y.; Papini, P.; Perrot, A. L.; Ricciarini, S.; Sako, T.; Sakurai, N.; Shimizu, Yuki; Suzuki, T.; Tamura, T.; Torii, Shoji; Tricomi, A.; Turner, W. C.

doi:10.1088/1748-0221/9/03/p03016

Cited by 29 publications

(31 citation statements)

References 12 publications

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“…The position resolution is better than 200 µm for photons and a few mm for neutrons. More details of the detector performance were reported elsewhere [4][5][6][7][8].…”

Section: The Lhcf Experimentsmentioning

confidence: 99%

Recent Results from the LHCf Experiment

Menjo

Adriani

Berti

et al. 2017

Proceedings of the 7th International Workshop on Very High Energy Particle Astronomy in 2014 (VHEPA2014)

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The LHCf experiment is an unique dedicated experiment for measurement of very forward particle production relevant to cosmic-ray air shower developments. The LHCf measured the spectra for forward photons, neutral pions and neutrons at √ s = 7 TeV p-p collisions and the nuclear modification factor for forward neutral pions at √ s = 5 TeV p-Pb. No hadronic interaction models used in air shower developments of very high energy cosmic-rays is able to reproduce all LHCf data reasonably while some of models are able to reproduce LHCf data partially.

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“…The position resolution is better than 200 µm for photons and a few mm for neutrons. More details of the detector performance were reported elsewhere [4][5][6][7][8].…”

Section: The Lhcf Experimentsmentioning

confidence: 99%

Recent Results from the LHCf Experiment

Menjo

Adriani

Berti

et al. 2017

Proceedings of the 7th International Workshop on Very High Energy Particle Astronomy in 2014 (VHEPA2014)

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“…Performance of detectors for hadron measurements have been carefully studied by Monte Carlo simulations. The data analysis method for neutron energy spectra closely follows that used for the photon component, which is described in [8]. Particle identification has been carried out by looking at the longitudinal shower development, using two dimensional cuts in the L20% and L90% plane, where L20% and L90% are the longitudinal depths containing 20% and 90% of the total deposited energy, respectively.…”

Section: Neutron Spectra In P-p Collisions Atmentioning

confidence: 99%

LHCf experiment: forward physics at LHC for cosmic rays study

et al. 2016

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Abstract. The LHCf experiment, optimized for the study of forward physics at LHC, completes its main physics program in this year 2015, with the proton-proton collisions at the energy of 13 TeV. LHCf gives important results on the study of neutral particles at extreme pseudo-rapidity, both for proton-proton and for proton-ion interactions. These results are an important reference for tuning the models of the hadronic interaction currently used for the simulation of the atmospheric showers induced by very high energy cosmic rays. The results of this analysis and the future perspective are presented in this paper.

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“…The position resolution is better than 200 µm for photons and a few mm for neutrons. More details of the detector performance were reported elsewhere [1,2].…”

Section: Lhcf Experimentsmentioning

confidence: 99%

“…The position resolution is better than 200 µm for photons and a few mm for neutrons. More details of the detector performance were reported elsewhere [1,2].The LHCf has successfully completed operating with proton-proton collisions at √ s = 0.9, 7 TeV in 2010 and with proton-lead collisions at √ s N N = 5.02 TeV in 2013. The forward photon and π 0 spectra for proton-proton collisions has been published [3][4][5].…”

mentioning

confidence: 99%

Recent results from LHCf

Menjo

Adriani

Berti

et al. 2015

EPJ Web of Conferences

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Abstract. The LHCf experiment is one of the LHC forward experiments. The aim of LHCf is to provide critical calibration data of hadronic intraction models used in air shower simulations. The LHCf has completed the operations for p-p collisions with a collision energy of √ s = 0.9 and 7 TeV p-p in 2010 and for p-Pb collisions with a collision energy per nucleon of √ s N N = 5.02. The recent LHCf result of forward neutron energy spectra at 7 TeV p-p collision and forward π 0 spectra at p-Pb collisions are presented in this paper. LHCf experimentThe LHCf experiment is an LHC experiment dedicated to the measurement of very forward neutral-particle spectra. The aim is to provide critical date for the calibration of hadronic interaction models used in MC simulations of cosmic-ray induced air showers. One of the key parameters of air shower development is the energy spectra of the energetic secondaries produced in the forward region of hadronic interactions. The LHCf detectors were designed to measure such forward energetic particles of p-p and pPb collisions at an LHC interaction point. The pseudorapidity coverage of the detectors is more than 8.4 at the beam crossing angle of 140 µrad.The LHCf has two independent detectors, so called Arm1 and Arm2, which were installed +/− 140 m from the ATLAS interaction point (IP1). Each detector has two sampling and imaging calorimeter towers. They consist of tungsten plates, 16 scintillator layers and four position sensitive layers. The scintillator layers were inserted between tungsten plates for shower sampling with 2 radiation length step. The position sensitive layers were developed to measure the shower impact position with different techniques of X-Y scintillating a e-mail: menjo@stelab.nagoya-u.ac.jp fiber hodoscopes and X-Y silicon strip detectors for Arm1 and Arm2, respectively. The transverse cross sections of calorimeters are 20×20 mm 2 and 40×40 mm 2 in Arm1 and 25×25 mm 2 and 32×32 mm 2 in Arm2. The total thickness of calorimeter towers is 44 radiation lengths and 1.7 interaction length. The LHCf detectors are able to measure only neutral particles like photons and neutrons because the charged particles produced at IP1 are swept out by the magnetic field of dipole magnets located between IP1 and the LHCf detectors. The energy resolution of detectors is about 5% for photons and 40% for neutrons. The position resolution is better than 200 µm for photons and a few mm for neutrons. More details of the detector performance were reported elsewhere [1,2].The LHCf has successfully completed operating with proton-proton collisions at √ s = 0.9, 7 TeV in 2010 and with proton-lead collisions at √ s N N = 5.02 TeV in 2013. The forward photon and π 0 spectra for proton-proton collisions has been published [3][4][5]. Neutron spectrum in √ s = 7 TeV p-p collisionsThe measurement of the neutron energy spectrum is a way to access one of the key parameters for air-shower This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which p...

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The performance of the LHCf detector for hadronic showers

Cited by 29 publications

References 12 publications

Recent Results from the LHCf Experiment

Recent Results from the LHCf Experiment

LHCf experiment: forward physics at LHC for cosmic rays study

Recent results from LHCf

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