Energy dependence of hadronic activity

Gabriel, T.A.; Groom, D. E.; Job, P. K.; Mokhov, N.; Stevenson, G.

doi:10.1016/0168-9002(94)91317-x

Cited by 118 publications

(64 citation statements)

References 12 publications

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“…6; they lie between 1.24 and 1.12. The response to pions relative to electrons is seen to increase with energy as expected, because the fraction of electromagnetic energy in an hadronic shower increases with energy [10,7,8]. The e/ values obtained with a standalone FLUKA simulation (see discussion in Section 4.3) are in good agreement with the experimental ones, as shown in the plot.…”

Section: Energy Reconstruction Using a 'Benchmark' Approachsupporting

confidence: 77%

“…To rescale the first pass energy E 0 to the beam energy E beam the approach of Refs. [7,8] was taken. In a non-compensating calorimeter, the mean visible energy is given by [7].…”

Section: Energy Reconstruction Using a 'Benchmark' Approachmentioning

confidence: 99%

“…The probability of longitudinal shower leakage was defined as the fraction of events with a signal in at least one of the muon wall counters. To be considered as a punchthrough signal, the signal Q i in any counter must satisfy the requirement Q i > Q i 3 i : (8) The average (Q i ) and sigma values ( i ) were determined using the most probable energy deposition of muons in the muon wall. Figure 14(a) shows the probability of longitudinal shower leakage as a function of the beam energy.…”

Section: Shower Leakage Studiesmentioning

confidence: 99%

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Results from a combined test of an electromagnetic liquid argon calorimeter with a hadronic scintillating-tile calorimeter

Ajaltouni¹,

Albiol²,

Алифанов³

et al. 1997

Nuclear Instruments and Methods in Physics Research Section A:

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The first combined test of an electromagnetic liquid argon accordion calorimeter and a hadronic scintillating-tile calorimeter was carried out at the CERN SPS. These devices are prototypes of the barrel calorimeter of the future ATLAS experiment at the LHC. The energy resolution of pions in the energy range from 20 to 300 GeV at an incident angle of about 11 is well-described by the expression =E = 46:5 6:0 = p E + 1 : 2 0 : 3 3:2 0:4 GeV=E. Shower profiles, shower leakage, and the angular resolution of hadronic showers were also studied.

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Section: Energy Reconstruction Using a 'Benchmark' Approachsupporting

confidence: 77%

“…To rescale the first pass energy E 0 to the beam energy E beam the approach of Refs. [7,8] was taken. In a non-compensating calorimeter, the mean visible energy is given by [7].…”

Section: Energy Reconstruction Using a 'Benchmark' Approachmentioning

confidence: 99%

Section: Shower Leakage Studiesmentioning

confidence: 99%

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Results from a combined test of an electromagnetic liquid argon calorimeter with a hadronic scintillating-tile calorimeter

Ajaltouni¹,

Albiol²,

Алифанов³

et al. 1997

Nuclear Instruments and Methods in Physics Research Section A:

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show abstract

“…In Paper I [1] we developed a conceptual basis for understanding the division between hadronic and electromagnetic (actually π 0 ) energy deposition in a π 0 ) is transferred to the electromagnetic sector through π 0 production in repeated hadronic inelastic collisions. The π 0 and hadronic energy deposits after the division are separately stochastic, and so must be treated as parallel statistical processes.…”

Section: Introductionmentioning

confidence: 99%

“…1 The model "calorimeter" was a very large iron or lead cylinder, with no energy leakage except via muons, neutrinos, and front-surface albedo losses. Extensive Monte Carlo simulations gave results in good agreement with test-beam measurements.…”

Section: Introductionmentioning

confidence: 99%

Energy flow in a hadronic cascade: Application to hadron calorimetry

Groom

2007

Nuclear Instruments and Methods in Physics Research Section A:

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The hadronic cascade description developed in an earlier paper is extended to the response of an idealized fine-sampling hadron calorimeter. Calorimeter response is largely determined by the transfer of energy E π 0 from the hadronic to the electromagnetic sector via π 0 production. Fluctuations in this quantity produce the "constant term" in hadron calorimeter resolution. The increase of its fractional mean, f 0 π 0 = E π 0 /E, with increasing incident energy E causes the energy dependence of the π/e ratio in a noncompensating calorimeter. The mean hadronic energy fraction, f 0 h = 1 − f 0 π 0 , was shown to scale very nearly as a power law in E: f 0 h = (E/E 0 ) m−1 , where E 0 ≈ 1 GeV for pions, and m ≈ 0.83. It follows that π/e = 1 − (1 − h/e)(E/E 0 ) m−1 , where electromagnetic and hadronic energy deposits are detected with efficiencies e and h, respectively. If the mean fraction of f 0 h which is deposited as nuclear gamma rays is f 0 γ , then the expression becomes π/e = 1 − (1 − h ′ /e)(1 − f 0 γ )(E/E 0 ) m−1 . Fluctuations in these quantities, along with sampling fluctuations, are incorporated to give an overall understanding of resolution, which is different from the usual treatments in interesting ways. The conceptual framework is also extended to the response to jets and the difference between π and p response.

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Calorimetry: Precise Energy Measurements

Sefkow¹,

Zeitnitz

2011

Physics at the Terascale

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Energy dependence of hadronic activity

Cited by 118 publications

References 12 publications

Results from a combined test of an electromagnetic liquid argon calorimeter with a hadronic scintillating-tile calorimeter

Results from a combined test of an electromagnetic liquid argon calorimeter with a hadronic scintillating-tile calorimeter

Energy flow in a hadronic cascade: Application to hadron calorimetry

Calorimetry: Precise Energy Measurements

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