Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Compensation of eddy-current-induced magnetic field transients in a MOT   The design and implementation of a current driver for the quadrupole coil of
a magneto-optical trap are presented. The control and the power stages of the
driver, both based on a push-pull configuration with high-speed transistors,
are separated, allowing for a protection of the control electronics. Moreover,
the coil current can be set by an analog voltage, a feature that makes possible
both fast and adiabatic switching of the quadrupole magnetic field. In order to
compensate magnetic field transients induced by eddy currents, the driver
allows a quick reversal of the quadrupole coil current providing in such a way
the required magnetic flux compensation. From a fit to the measured magnetic
field transients, we have extracted the decay constants which confirm the
efficiency of the compensation. Furthermore, we measured the influence of eddy
currents on a sample of cold caesium atoms, testing at the same time the
ultimate performance of the driver for our applications. The results show that
the implemented electronic circuit is able to reduce substantially the
transient effects with switching times of the magnetic field below 100
microseconds.

31
The categories of this paper are: ao-sci
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
14
The categories of this paper are: math-ph
36
The categories of this paper are: cmp-lg
8
The categories of this paper are: hep-ex
20
The categories of this paper are: acc-phys
11
The categories of this paper are: hep-lat
33
The categories of this paper are: plasm-ph
13
The categories of this paper are: quant-ph
21
The categories of this paper are: adap-org
0
The categories of this paper are: hep-ph
5
The categories of this paper are: gr-qc
10
The categories of this paper are: q-bio
28
The categories of this paper are: alg-geom