Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Miniaturized lab system for future cold atom experiments in microgravity   We present the technical realization of a compact system for performing
experiments with cold $^{87}{\text{Rb}}$ and $^{39}{\text{K}}$ atoms in
microgravity in the future. The whole system fits into a capsule to be used in
the drop tower Bremen. One of the advantages of a microgravity environment is
long time evolution of atomic clouds which yields higher sensitivities in atom
interferometer measurements. We give a full description of the system
containing an experimental chamber with ultra-high vacuum conditions,
miniaturized laser systems, a high-power thulium-doped fiber laser, the
electronics and the power management. In a two-stage magneto-optical trap atoms
should be cooled to the low $\mu$K regime. The thulium-doped fiber laser will
create an optical dipole trap which will allow further cooling to sub-$\mu$K
temperatures. The presented system fulfills the demanding requirements on size
and power management for cold atom experiments on a microgravity platform,
especially with respect to the use of an optical dipole trap. A first test in
microgravity, including the creation of a cold Rb ensemble, shows the
functionality of the system.

17
The categories of this paper are: q-fin
1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci
37
The categories of this paper are: supr-con
19
The categories of this paper are: eess
33
The categories of this paper are: plasm-ph
2
The categories of this paper are: math
15
The categories of this paper are: nucl-ex
26
The categories of this paper are: bayes-an
24
The categories of this paper are: dg-ga
0
The categories of this paper are: hep-ph
22
The categories of this paper are: chao-dyn
8
The categories of this paper are: hep-ex
20
The categories of this paper are: acc-phys
4
The categories of this paper are: cond-mat
32
The categories of this paper are: atom-ph