Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Phoenix and Peregrine Ion Traps   The Phoenix and Peregrine ion traps are micro-fabricated surface-electrode
ion traps based on silicon technology. Both are linear traps using a symmetric
6-rail design with segmented inner and outer control electrodes. The traps are
fabricated on Sandia's High Optical Access (HOA) platform to provide good
optical access skimming the trap surface. They are packaged in custom ceramic
pin or land grid array packages using a 2.54 mm pitch. The Peregrine trap is a
surface trap with all electrodes in one plane. The Phoenix trap has the same
layout, but with a central through-substrate slot and its inner control
electrodes are at a lower metal level. Both traps provide means to measure the
substrate temperature and to heat the device by means of integrated aluminum
and tungsten wires.

37
The categories of this paper are: supr-con
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The categories of this paper are: bayes-an
17
The categories of this paper are: q-fin
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The categories of this paper are: chem-ph
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The categories of this paper are: dg-ga
25
The categories of this paper are: patt-sol
2
The categories of this paper are: math
36
The categories of this paper are: cmp-lg
4
The categories of this paper are: cond-mat
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The categories of this paper are: plasm-ph
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The categories of this paper are: chao-dyn
20
The categories of this paper are: acc-phys
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The categories of this paper are: atom-ph
1
The categories of this paper are: cs
21
The categories of this paper are: adap-org
18
The categories of this paper are: econ