Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A new concept of y-ray telescope. LArGO: Liquid Argon Gamma-ray
  Observatory   LArGO (Liquid Argon Gamma-ray Observatory) consists of a new design for a
$\gamma$-ray telescope, which exploits the idea of using a Liquid Argon Time
Projection Chamber (LAr-TPC) as tracker-converter. Particle tracking in LAr-TPC
can efficiently starts since the primary photon vertex. Indeed, while in the
present space telescopes the incident photon converts in a tungsten foil, which
is a passive material, in a LAr-TPC this conversion happens in LAr itself,
which is fully active. In this proceeding is described a plausible design for
the tracker-converter detector which fulfills the constraints on conversion
efficiency, angular resolution, and wide field of view. It is demonstrated how
this design can provide an unprecedented angular resolution for a $\gamma$-ray
telescope, leading to a significant improvement in sensitivity and most
important disclosing the possibility to detect the polarization of $\gamma$-ray
emission.

34
The categories of this paper are: chem-ph
35
The categories of this paper are: mtrl-th
33
The categories of this paper are: plasm-ph
17
The categories of this paper are: q-fin
10
The categories of this paper are: q-bio
21
The categories of this paper are: adap-org
22
The categories of this paper are: chao-dyn
16
The categories of this paper are: stat
2
The categories of this paper are: math
8
The categories of this paper are: hep-ex
37
The categories of this paper are: supr-con
15
The categories of this paper are: nucl-ex
19
The categories of this paper are: eess
12
The categories of this paper are: nucl-th
28
The categories of this paper are: alg-geom
26
The categories of this paper are: bayes-an