Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Simulation of a first case study for magnetic field imaging with the
  Magic-$\mu$ technique   So far, most of the developments in muography (or cosmic-ray muon
radiography) have been based on either the scattering or the absorption of
cosmic-ray muons produced by the nuclear interactions between primary
cosmic-rays and the nuclei of the Earth's atmosphere. Applications of muography
are increasing in various disciplines. A new use of this technique to measure a
magnetic field has recently been proposed by our group. This new application
takes advantage of the electric charge of cosmic-ray muons, which causes them
to change their trajectory due to the Lorentz force generated by a magnetic
field. In this study, we present a feasibility study of the proposed technique
by simulating a simple dipole magnet using the three-dimensional finite element
solution package AMaze, together with the PHITS Monte Carlo simulation tools.
The distribution of magnetic field flux densities around the magnet was
calculated in AMaze and entered into the PHITS code. Positive and negative
cosmic-ray muons were generated based on the PHITS-based analytical radiation
model (PARMA). A comparison of the count rate maps of the detected muons on two
position-sensitive scintillator detectors for the magnetic field ON and OFF was
studied using PHITS. The simulation results show the effect of the magnet on
the count rate maps and are promising for the newly proposed application of
cosmic-ray muons, the imaging of a magnetic field.

14
The categories of this paper are: math-ph
19
The categories of this paper are: eess
1
The categories of this paper are: cs
33
The categories of this paper are: plasm-ph
35
The categories of this paper are: mtrl-th
4
The categories of this paper are: cond-mat
17
The categories of this paper are: q-fin
7
The categories of this paper are: hep-th
5
The categories of this paper are: gr-qc
31
The categories of this paper are: ao-sci
2
The categories of this paper are: math
15
The categories of this paper are: nucl-ex
22
The categories of this paper are: chao-dyn
21
The categories of this paper are: adap-org
27
The categories of this paper are: comp-gas
26
The categories of this paper are: bayes-an