scholarly journals The new Inner Tracking System of the ALICE experiment

2017 ◽  
Vol 967 ◽  
pp. 900-903 ◽  
Author(s):  
P. Martinengo
Keyword(s):  
Tracking System ◽  
Alice Experiment ◽  
Inner Tracking System

scholarly journals Development of the Safety System for the Inner Tracking System of the ALICE Experiment

2021 ◽  
Vol 251 ◽  
pp. 04004
Author(s):  
Pascal Herve Blanc ◽  
Patricia Mendez Lorenzo ◽  
Xavier Pons
Keyword(s):  
Low Voltage ◽  
Tracking System ◽  
Industrial Applications ◽  
Safety System ◽  
Alice Experiment ◽  
Inner Tracking System ◽  
Scada System ◽  
Pixel Sensors ◽  
Control Application ◽  
Interlock System

During the LHC Long Shutdown 2, the ALICE experiment has undergone numerous upgrades to cope with the large amount of data expected. Among all new elements integrated into ALICE, the experiment counts with a new Inner Tracking System (ITS), with innovative pixel sensors that will substantially improve the performance of the system. The new detector is powered up through a complex Low Voltage (LV) distribution, increasing the power dissipated by the detector and requiring the installation of a large number of temperature measurement points. In 2020, a new safety system has been developed to distribute the ITS LV interlock system and to monitor the new temperature values. The safety system is based on a Siemens S7-1500 PLC device. The control application governing the PLC has been configured through the UNICOS-CPC infrastructure made at CERN for the standardisation of industrial applications. UNICOS-CPC enables both the automatisation of control tasks governing the PLC and the interface to the WinCC OA based SCADA system. This paper provides a complete description of the setup of this safety system.

scholarly journals Production of (anti-)(hyper-)nuclei at LHC energies with ALICE

2018 ◽  
Vol 171 ◽  
pp. 14009 ◽  
Author(s):  
Maximiliano Puccio
Keyword(s):  
Time Projection Chamber ◽  
Tracking System ◽  
Quality Data ◽  
Alice Experiment ◽  
High Quality Data ◽  
Weak Decays ◽  
Inner Tracking System ◽  
Production Models ◽  
Time Projection ◽  
Deuteron Production

The ALICE experiment at the LHC has measured a variety of (anti-)(hyper-)nuclei produced in Pb–Pb collisions at [see formula in PDF] = 5.02 TeV and at 2.76 TeV. In addition, a large sample of high quality data was collected in pp collisions at √s = 7 TeV and 13 TeV and in p-Pb collisions at [see formula in PDF] = 5.02 TeV. These data are used to study the production of different (anti-)(hyper-)nuclei in the collisions, namely (anti-)deuteron, (anti-)3He, (anti-)alpha and (anti-)3ΛH. The identification of these (anti-)(hyper-)nuclei is based on the energy loss measurement in the Time Projection Chamber and the velocity measurement in the Time-Of-Flight detector. In addition, the Inner Tracking System is used to distinguish secondary vertices originating from weak decays from the primary vertex. New results on deuteron production as a function of multiplicity in pp, p–Pb and Pb–Pb collisions will be presented, as well as the measurement of 3He in p–Pb and Pb– Pb collisions. Special emphasis will be given to the new results of the (anti-)3ΛH in its charged-two-body decay mode. The large variety of measurements at different energies and system sizes constrains the production models of light flavour baryon clusters, in particular those based on coalescence and the statistical hadronisation approaches.

MISTRAL & ASTRAL: two CMOS Pixel Sensor architectures suited to the Inner Tracking System of the ALICE experiment

2014 ◽  
Vol 9 (01) ◽  
pp. C01026-C01026 ◽  
Author(s):  
F Morel ◽  
C Hu-Guo ◽  
G Bertolone ◽  
G Claus ◽  
C Colledani ◽  
...  
Keyword(s):  
Tracking System ◽  
Alice Experiment ◽  
Inner Tracking System

scholarly journals System simulations for the ALICE ITS detector upgrade

2020 ◽  
Vol 245 ◽  
pp. 02011
Author(s):  
Simon Voigt Nesbo ◽  
Johan Alme ◽  
Matthias Bonora ◽  
Piero Giubilato ◽  
Håvard Helstrup ◽  
...  
Keyword(s):  
Simulation Model ◽  
Tracking System ◽  
System Level ◽  
System Configuration ◽  
Alice Experiment ◽  
Detector Performance ◽  
Inner Tracking System ◽  
Number Of Factors ◽  
Ongoing Development ◽  
Present Simulation

The ALICE experiment at the CERN LHC will feature several upgrades for Run 3, one of which is a new Inner Tracking System (ITS). The ITS upgrade is currently under development and commissioning, and will be installed during the ongoing long shutdown 2. A number of factors will have an impact on the performance and readout efficiency of the ITS in run 3, and to that end, a simulation model of the readout logic in the ALPIDE pixel sensor chips for the ITS was developed, using the SystemC library for system level modeling in C++. This simulation model is three orders of magnitude faster than a normal HDL simulation of the chip and facilitates simulations of an increased number of events for a large portion of the detector. In this paper, we present simulation results, where we have been able to quantify detector performance under different running conditions. The results are used for system configuration as well as for the ongoing development of the readout electronics.

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