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 A track finding algorithm for the inner tracking system of MPD/NICA

2019 ◽  
Vol 204 ◽  
pp. 07006 ◽  
Author(s):  
Dmitry Zinchenko ◽  
Eduard Nikonov ◽  
Alexander Zinchenko
Keyword(s):  
Tracking System ◽  
Simulated Data ◽  
Secondary Vertex ◽  
Track Reconstruction ◽  
Interaction Point ◽  
Inner Tracking System ◽  
Pixel Sensors ◽  
First Results ◽  
Vertex Reconstruction

An inner tracking system (ITS) based on silicon pixel sensors is currently considered as one of the possible MPD upgrade steps. The main purpose of the new detector is to provide a better precision of the primary and secondary vertex reconstruction and improve track reconstruction in MPD in the region close to the interaction point. To study the ITS performance a new track finding algorithm was developed, which better takes into account the new system’s advantages. In this paper the new algorithm is described and first results obtained on simulated data are presented.

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