Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Solar Orbiter SPICE instrument -- An extreme UV imaging spectrometer   The Spectral Imaging of the Coronal Environment (SPICE) instrument is a
high-resolution imaging spectrometer operating at extreme ultraviolet (EUV)
wavelengths. In this paper, we present the concept, design, and pre-launch
performance of this facility instrument on the ESA/NASA Solar Orbiter mission.
The goal of this paper is to give prospective users a better understanding of
the possible types of observations, the data acquisition, and the sources that
contribute to the instrument's signal. The paper discusses the science
objectives, with a focus on the SPICE-specific aspects, before presenting the
instrument's design, including optical, mechanical, thermal, and electronics
aspects. This is followed by a characterisation and calibration of the
instrument's performance. The paper concludes with descriptions of the
operations concept and data processing. The performance measurements of the
various instrument parameters meet the requirements derived from the mission's
science objectives. The SPICE instrument is ready to perform measurements that
will provide vital contributions to the scientific success of the Solar Orbiter
mission.

22
The categories of this paper are: chao-dyn
18
The categories of this paper are: econ
10
The categories of this paper are: q-bio
21
The categories of this paper are: adap-org
5
The categories of this paper are: gr-qc
30
The categories of this paper are: q-alg
35
The categories of this paper are: mtrl-th
28
The categories of this paper are: alg-geom
0
The categories of this paper are: hep-ph
3
The categories of this paper are: physics
24
The categories of this paper are: dg-ga
1
The categories of this paper are: cs
19
The categories of this paper are: eess
4
The categories of this paper are: cond-mat
12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol