Naslov
Upgrade of the ALICE central barrel tracking detectors: ITS and TPC

Autori
Margutti, J. ; ... ; Antičić, Tome ; … , Erhardt, Filip ; … ; Gotovac, Sven ; … ; Jerčić, Marko ; … ; Lončar, Petra ; … ; Mudnić, Eugen ; … ; Planinić, Mirko ; … ; Poljak, Nikola ; … ; Utrobičić, Antonija ; … ; Vicković, Linda ; … ; Zou, S

Kolaboracija
ALICE Collaboration

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
The 27th International Conference on Ultrarelativistic Nucleus-Nucleus Collisions: Quark Matter 2018, Nuclear Physics A, vol. 982 / Scomparin, Enrico - Amsterdam : Elsevier, 2019, 943-946

Skup
27th International Conference on Ultrarelativistic Nucleus-Nucleus Collisions (Quark Matter 2018)

Mjesto i datum
Venecija, Italija, 13.05.2018. - 19.05.2018

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
LHC ; ALICE ; balance function ; unidentified hadron ; charged-pion ; charged-kaon ; Pb–Pb ; p–Pb ; pp

Sažetak
The ALICE Collaboration will undertake a major upgrade of the detector apparatus during the second LHC Long Shutdown LS2 (2019–2020) in view of the Runs 3 and 4 (2021–2029). The objective of the upgrade is two-fold: i) an improvement of the tracking precision and efficiency, in particular in the low-momentum range ; ii) an improvement of the readout capabilities of the experiment, in order to fully exploit the luminosity for heavy ions envisaged after LS2. The first goal will be achieved by replacing the Inner Tracking System with a new tracker, composed of seven layers of silicon pixel detectors. The new tracker will be made up of about 25000 Monolithic Active Pixel Sensors with fast readout, resulting in a material thickness reduced to 0.3% (inner layers) – 1% (outer layers) of the radiation length and a granularity of 28×28μm2. The second goal will be achieved, among other measures, by replacing the readout chambers of the 90m3 Time Projection Chamber with Micro Pattern Gaseous Detectors. In particular, the new readout chambers will consist of stacks of 4 Gas Electron Multiplier foils combining different hole pitches. The upgraded detector will operate continuously without the use of a triggered gating grid. It will thus be able to record all Pb–Pb collisions at the LHC interaction rate of 50kHz.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA