The ALICE Zero Degree Calorimeters (ZDC) provide information about event geometry in heavy-ion collisions through the detection of spectator nucleons and allow to estimate the delivered luminosity. They are also very useful in p–A collisions, allowing an unbiased estimation of collision centrality. The Run 3 operating conditions will involve a tenfold increase in instantaneous luminosity in heavy-ion collisions, with event rates that, taking into account the different processes, could reach 5 MHz in the ZDCs. The challenges posed by this demanding environment lead to a redesign of the readout system and to the transition to a continuous acquisition. The new system is based on 12 bit, 1 Gsps FMC digitizers that will continuously sample the 26 ZDC channels. Triggering, pedestal estimation and luminosity measurements will be performed on FPGA directly connected to the front-end. The new readout system and the performances foreseen in Run 3 are presented.
Performance of the readout system of the ALICE Zero Degree Calorimeters in LHC Run 3 / Cortese, P.; Arba, M.; Cotto, G.; Dellacasa, G.; De Marco, N.; De Remigis, P.; Falchieri, D.; Ferretti, A.; Lombardo, L.; Mereu, P.; Micheletti, L.; Puggioni, C.; Oppedisano, C.; Quaglia, L.; Siddhanta, S.; Terlizzi, L.; Tuveri, M.; Wheadon, R.. - In: JOURNAL OF PHYSICS. CONFERENCE SERIES. - ISSN 1742-6588. - ELETTRONICO. - 2374:(2022), pp. 1-5. (Intervento presentato al convegno 2021 International Conference on Technology and Instrumentation in Particle Physics, TIPP 2021 tenutosi a Virtual ON LINE nel 23-28 May 2021) [10.1088/1742-6596/2374/1/012091].
Performance of the readout system of the ALICE Zero Degree Calorimeters in LHC Run 3
Lombardo L.;
2022
Abstract
The ALICE Zero Degree Calorimeters (ZDC) provide information about event geometry in heavy-ion collisions through the detection of spectator nucleons and allow to estimate the delivered luminosity. They are also very useful in p–A collisions, allowing an unbiased estimation of collision centrality. The Run 3 operating conditions will involve a tenfold increase in instantaneous luminosity in heavy-ion collisions, with event rates that, taking into account the different processes, could reach 5 MHz in the ZDCs. The challenges posed by this demanding environment lead to a redesign of the readout system and to the transition to a continuous acquisition. The new system is based on 12 bit, 1 Gsps FMC digitizers that will continuously sample the 26 ZDC channels. Triggering, pedestal estimation and luminosity measurements will be performed on FPGA directly connected to the front-end. The new readout system and the performances foreseen in Run 3 are presented.File | Dimensione | Formato | |
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https://hdl.handle.net/11583/2981781