Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: ALICE ITS Upgrade for LHC Run 3: Commissioning in the Laboratory   ALICE is the CERN LHC experiment optimised for the study of the strongly
interacting matter produced in heavy-ion collisions and devoted to the
characterisation of the quark-gluon plasma. To achieve the physics program for
LHC Run 3, a major upgrade of the experimental apparatus is ongoing. A key
element of the upgrade is the substitution of the Inner Tracking System (ITS)
with a completely new silicon-based detector (ITS 2) whose features will allow
the reconstruction of rare physics channels not accessible with the previous
layout. The enabling technology for such a performance boost is the adoption of
custom-designed CMOS Monolithic Active Pixel Sensor as detecting elements. In
this proceedings, an overview of the adopted technologies as well as the status
of the detector commissioning will be given.

31
The categories of this paper are: ao-sci
19
The categories of this paper are: eess
35
The categories of this paper are: mtrl-th
33
The categories of this paper are: plasm-ph
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The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc
28
The categories of this paper are: alg-geom
34
The categories of this paper are: chem-ph
17
The categories of this paper are: q-fin
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The categories of this paper are: patt-sol
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The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio
15
The categories of this paper are: nucl-ex
37
The categories of this paper are: supr-con
26
The categories of this paper are: bayes-an
14
The categories of this paper are: math-ph