Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Cosmic-Ray Positron Identification with the PAMELA experiment   The PAMELA satellite borne experiment is designed to study cosmic rays with
great accuracy in a wide energy range. One of PAMELA's main goal is the study
of the antimatter component of cosmic rays. The experiment, housed on board the
Russian satellite Resurs-DK1, was launched on June 15th 2006 and it is still
taking data. In this work we present the measurement of galactic positron
energy spectrum in the energy range between 500 MeV and few hundred GeV.

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The categories of this paper are: chem-ph
2
The categories of this paper are: math
25
The categories of this paper are: patt-sol
16
The categories of this paper are: stat
11
The categories of this paper are: hep-lat
31
The categories of this paper are: ao-sci
17
The categories of this paper are: q-fin
33
The categories of this paper are: plasm-ph
21
The categories of this paper are: adap-org
15
The categories of this paper are: nucl-ex
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The categories of this paper are: nucl-th
7
The categories of this paper are: hep-th
32
The categories of this paper are: atom-ph
1
The categories of this paper are: cs
14
The categories of this paper are: math-ph
27
The categories of this paper are: comp-gas