Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spin dynamics investigations for the EDM experiment at COSY   Precision experiments, such as the search for a deuteron electric dipole
moments using a storage rings like COSY, demand for an understanding of the
spin dynamics with unprecedented accuracy. In such an enterprise, numerical
predictions play a crucial role for the development and later application of
spin-tracking algorithms. Various measurement concepts involving polarization
effects induced by an RF Wien filter and static solenoids in COSY are
discussed. The matrix formalism, applied here, deals \textit{solely} with spin
rotations \textit{on the closed orbit} of the machine, and is intended to
provide \textit{numerical} guidance for the development of beam and
spin-tracking codes for rings that employ realistic descriptions of the
electric and magnetic bending and focusing elements, solenoids etc., and a
realistically-modeled RF Wien filter.

32
The categories of this paper are: atom-ph
33
The categories of this paper are: plasm-ph
7
The categories of this paper are: hep-th
27
The categories of this paper are: comp-gas
37
The categories of this paper are: supr-con
14
The categories of this paper are: math-ph
23
The categories of this paper are: solv-int
2
The categories of this paper are: math
30
The categories of this paper are: q-alg
22
The categories of this paper are: chao-dyn
29
The categories of this paper are: funct-an
28
The categories of this paper are: alg-geom
9
The categories of this paper are: nlin
4
The categories of this paper are: cond-mat
31
The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc