Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: ALICE FIT data processing and performance during LHC Run 3   During the upcoming Run 3 and Run 4 at the LHC the upgraded ALICE (A Large
Ion Collider Experiment) will operate at a significantly higher luminosity and
will collect two orders of magnitude more events than in Run 1 and Run 2. A
part of the ALICE upgrade is the new Fast Interaction Trigger (FIT). This
thoroughly redesigned detector combines, in one system, the functionality of
the four forward detectors used by ALICE during the LHC Run 2: T0, V0, FMD and
AD. The FIT will monitor luminosity and background, provide feedback to the
LHC, and generate minimum bias, vertex and centrality triggers, in real time.
During the offline analysis FIT data will be used to extract the precise
collision time needed for time-of-flight (TOF) particle identification. During
the heavy-ion collisions, FIT will also determine multiplicity, centrality, and
event plane. The FIT electronics designed to function both in the continuous
and the triggered readout mode. In these proceedings the FIT simulation,
software, and raw data processing are briefly described. However, the main
focus is on the detector performance, trigger efficiencies, collision time, and
centrality resolution.

25
The categories of this paper are: patt-sol
10
The categories of this paper are: q-bio
30
The categories of this paper are: q-alg
21
The categories of this paper are: adap-org
9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
28
The categories of this paper are: alg-geom
36
The categories of this paper are: cmp-lg
13
The categories of this paper are: quant-ph
23
The categories of this paper are: solv-int
34
The categories of this paper are: chem-ph
17
The categories of this paper are: q-fin
26
The categories of this paper are: bayes-an
12
The categories of this paper are: nucl-th
32
The categories of this paper are: atom-ph
24
The categories of this paper are: dg-ga