Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Solar Wind Around Pluto (SWAP) Instrument Aboard New Horizons   The Solar Wind Around Pluto (SWAP) instrument on New Horizons will measure
the interaction between the solar wind and ions created by atmospheric loss
from Pluto. These measurements provide a characterization of the total loss
rate and allow us to examine the complex plasma interactions at Pluto for the
first time. Constrained to fit within minimal resources, SWAP is optimized to
make plasma-ion measurements at all rotation angles as the New Horizons
spacecraft scans to image Pluto and Charon during the flyby. In order to meet
these unique requirements, we combined a cylindrically symmetric retarding
potential analyzer (RPA) with small deflectors, a top-hat analyzer, and a
redundant/coincidence detection scheme. This configuration allows for highly
sensitive measurements and a controllable energy passband at all scan angles of
the spacecraft.

2
The categories of this paper are: math
7
The categories of this paper are: hep-th
35
The categories of this paper are: mtrl-th
1
The categories of this paper are: cs
25
The categories of this paper are: patt-sol
30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph
24
The categories of this paper are: dg-ga
27
The categories of this paper are: comp-gas
29
The categories of this paper are: funct-an
15
The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph
20
The categories of this paper are: acc-phys
9
The categories of this paper are: nlin
26
The categories of this paper are: bayes-an
8
The categories of this paper are: hep-ex