Performance of ALICE AD modules in the CERN PS test beam

Broz, M.; Noris, J. C. C.; Villar, E. Calvo; Galvan, Carlos Duarte; Endress, E.; Beltran, L. G. E.; Téllez, A. Fernández; Finogeev, D.; Gago, A. M.; Corral, G. Herrera; Kim, T.; Kurepin, A.; Kurepin, N.; Monźon, I. Léon; Hernández, Mario Iván Martínez; Mayer, Christoph; Mieskolainen, M. M.; Orava, R.; Moreno, L. A. P.; Revol, J.-P.; Cahuantzi, M. Rodríguez; Torres, Solangel Rojas; Serebryakov, D.; Shabanov, A.; Usenko, E.; Tello, A. Villatoro

doi:10.1088/1748-0221/16/01/p01017

Cited by 9 publications

(4 citation statements)

References 21 publications

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“…Finally, FDD (Forward Diffractive Detector) is the successor of ALICE diffractive detector, AD, which detects charged particles at large pseudorapidity for the selection of diffractive and ultra-peripheral events. [38].…”

Section: Fast Interaction Triggermentioning

confidence: 99%

ALICE upgrades during the LHC Long Shutdown 2

Acharya,

Acosta Hernandez,

Adamová

et al. 2024

J. Inst.

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A Large Ion Collider Experiment (ALICE) has been conceived and constructed as a heavy-ion experiment at the LHC. During LHC Runs 1 and 2, it has produced a wide range of physics results using all collision systems available at the LHC. In order to best exploit new physics opportunities opening up with the upgraded LHC and new detector technologies, the experiment has undergone a major upgrade during the LHC Long Shutdown 2 (2019–2022). This comprises the move to continuous readout, the complete overhaul of core detectors, as well as a new online event processing farm with a redesigned online-offline software framework. These improvements will allow to record Pb-Pb collisions at rates up to 50 kHz, while ensuring sensitivity for signals without a triggerable signature.

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Section: Fast Interaction Triggermentioning

confidence: 99%

ALICE upgrades during the LHC Long Shutdown 2

Acharya,

Acosta Hernandez,

Adamová

et al. 2024

J. Inst.

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“…The trigger signal is provided by the V0 [14] counters, two arrays of 32 scintillator tiles each, covering the full azimuth within −3.7 < η < −1.7 for V0C, located on the same side as for the ALICE dimuon arm (C-side), and 2.8 < η < 5.1 for V0A, placed on the opposite side (A-side). An alternative trigger condition can be provided by the ALICE diffractive (AD) detector [15], a hodoscope of plastic scintillators covering the pseudorapidity ranges −7.0 < η < −4.9 and 4.8 < η < 6.3.…”

Section: Alice Detectorsmentioning

confidence: 99%

Study of very forward energy and its correlation with particle production at midrapidity in pp and p-Pb collisions at the LHC

Acharya

Adamová²,

Adler³

et al. 2022

J. High Energ. Phys.

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The energy deposited at very forward rapidities (very forward energy) is a powerful tool for characterising proton fragmentation in pp and p-Pb collisions. The correlation of very forward energy with particle production at midrapidity provides direct insights into the initial stages and the subsequent evolution of the collision. Furthermore, the correlation with the production of particles with large transverse momenta at midrapidity provides information complementary to the measurements of the underlying event, which are usually interpreted in the framework of models implementing centrality-dependent multiple parton interactions.Results about very forward energy, measured by the ALICE zero degree calorimeters (ZDCs), and its dependence on the activity measured at midrapidity in pp collisions at $$ \sqrt{s} $$ s = 13 TeV and in p-Pb collisions at $$ \sqrt{s_{\mathrm{NN}}} $$ s NN = 8.16 TeV are discussed. The measurements performed in pp collisions are compared with the expectations of three hadronic interaction event generators: PYTHIA 6 (Perugia 2011 tune), PYTHIA 8 (Monash tune), and EPOS LHC. These results provide new constraints on the validity of models in describing the beam remnants at very forward rapidities, where perturbative QCD cannot be used.

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“…The forward diffractive detector (FDD) [7] is the upgrade of the former AD detector [8]. It is made of two arrays of plastic scintillator pads.…”

Section: Fddmentioning

confidence: 99%

Status of the Fast Interaction Trigger detector for the ALICE upgrade

Torres¹

2022

Proceedings of the European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2021)

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During the second Long Shutdown (LS2) of the LHC, ALICE has installed three new detectors and implemented continuous data readout with online reconstruction and data compression for several other subsystems. The changes are needed to benefit from the increased luminosity of the LHC during Run 3 and 4. The ALICE interaction rate will increase, with respect to Run 1 and 2, by up to two orders of magnitude, reaching 50 kHz for Pb-Pb and up to 1 MHz for pp collisions. One of the new ALICE detectors is the Fast Interaction Trigger (FIT). Its main functionality includes generating minimum-latency interaction triggers (< 425 ns), luminosity monitoring with online feedback to the LHC, a precise measurement of the collision time with a resolution better than 40 ps, determination of the centrality and event plane for heavy-ion collisions, and tagging of diffractive and ultra-peripheral events. The FIT detector consists of three subsystems: two fast Cherenkov arrays with 2 cm thick quartz radiators coupled to modified MCP-PMT photosensors (FT0), a large-area scintillator disc (FV0) implementing a novel light collection system, and the forward diffractive detector (FDD). FDD comprises two plastic scintillator arrays with fast wavelength shifting bars, optical fibre bundles, and PMTs. The FDD arrays are located ±20 m away from the nominal interaction point, along the beam line. A brief description of the detector and its functionalities is given together with the installation and commissioning status.

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Performance of ALICE AD modules in the CERN PS test beam

Cited by 9 publications

References 21 publications

ALICE upgrades during the LHC Long Shutdown 2

ALICE upgrades during the LHC Long Shutdown 2

Study of very forward energy and its correlation with particle production at midrapidity in pp and p-Pb collisions at the LHC

Status of the Fast Interaction Trigger detector for the ALICE upgrade

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