Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Superconducting Magnet with a Minimal Steel Yoke for the Future Circular
  Collider Detector   The conceptual design study of a Future Circular hadron-hadron Collider
(FCC-hh) with a center-of-mass energy of the order of 100 TeV, assumed to be
constructed in a new tunnel of 80-100 km circumference, includes the
determination of the basic requirements for its detectors. A superconducting
solenoid magnet of 12-m-diameter inner bore with the central magnetic flux
density of 6 T, in combination with two superconducting dipole magnets and two
conventional toroid magnets is proposed for an FCC-hh experimental setup. The
coil of 23.468 m length has seven 3.35-m-long modules included into one
cryostat. The steel yoke with a mass of 22.6 kt consists of two barrel layers
of 0.5 m radial thickness and a 0.7-m-thick nose disk and four 0.6-m-thick
end-cap disks each side. The outer diameter of the yoke is 17.7 m. The full
length of the magnetic system is 62.6 m. The air gaps between the end-cap disks
provide for the installation of the muon chambers up to an absolute
pseudorapidity about 2.7. The superconducting dipole magnets provide
measurement of charged particle momenta in the absolute pseudorapidity region
greater than 3. The conventional forward muon spectrometer allows muon
identification in the absolute pseudorapidity region from 2.7 to 5. The magnet
is modeled with the program TOSCA from Cobham CTS Limited. The total current in
the superconducting solenoid coil is 123 MA-turns; the stored energy is 41.8
GJ. The axial force acting on each end-cap is 450 MN. The stray field is 13.7
mT at a radius of 50 m from the coil axis, and 5.2 mT at a radius of 100 m.
Many other parameters are presented and discussed.

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The categories of this paper are: dg-ga
0
The categories of this paper are: hep-ph
23
The categories of this paper are: solv-int
8
The categories of this paper are: hep-ex
34
The categories of this paper are: chem-ph
36
The categories of this paper are: cmp-lg
20
The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org
26
The categories of this paper are: bayes-an
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The categories of this paper are: chao-dyn
37
The categories of this paper are: supr-con
1
The categories of this paper are: cs
4
The categories of this paper are: cond-mat
32
The categories of this paper are: atom-ph
18
The categories of this paper are: econ
27
The categories of this paper are: comp-gas