Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Design and characteristics of a WEP test in a sounding-rocket payload   We describe SR-POEM, a Galilean test of the weak equivalence principle that
is to be conducted during the free fall portion of the flight of a sounding
rocket payload. This test of a single pair of substances will have a
measurement uncertainty of {\sigma}({\eta}) < 2 10^17 after averaging the
results of eight separate drops, each of 120 s duration. The entire payload is
inverted between successive drops to cancel potential sources of systematic
error. The weak equivalence principle measurement is made with a set of four of
the SAO laser gauges, which have achieved an Allan deviation of 0.04 pm for an
averaging time of 30 s. We discuss aspects of the current design with an
emphasis on those that bear on the accuracy of the determination of {\eta}. The
discovery of a violation ({\eta} \neq 0) would have profound implications for
physics, astrophysics and cosmology.

1
The categories of this paper are: cs
14
The categories of this paper are: math-ph
35
The categories of this paper are: mtrl-th
25
The categories of this paper are: patt-sol
18
The categories of this paper are: econ
28
The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys
10
The categories of this paper are: q-bio
24
The categories of this paper are: dg-ga
21
The categories of this paper are: adap-org
2
The categories of this paper are: math
32
The categories of this paper are: atom-ph
17
The categories of this paper are: q-fin
31
The categories of this paper are: ao-sci
33
The categories of this paper are: plasm-ph
15
The categories of this paper are: nucl-ex