Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Superconducting detector magnets for high energy physics   Various superconducting detector solenoids for particle physics have been
developed in the world. The key technology is the aluminum-stabilized
superconducting conductor for almost all the detector magnets in particle
physics experiments. With the progress of the conductor, the coil fabrication
technology has progressed as well, such as the inner coil winding technique,
indirect cooling, transparent vacuum vessel, quench protection scheme using
pure aluminum strips and so on. The detector solenoids design study is in
progress for future big projects in Japan and Europe, that is, ILC, FCC and
CLIC, based on the technologies established over many years. The combination of
good mechanical properties and keeping a high RRR is a key point for the
development of Al-stabilized conductor. The present concern for the detector
solenoid development is to have been gradually losing the key technologies and
experiences, because large-scale detector magnets with Al-stabilized conductor
has not been fabricated after the success of CMS and ATLAS-CS in LHC.
Complementary efforts are needed to resume an equivalent level of expertise, to
extend the effort on research and to develop these technologies and apply them
to future detector magnet projects. Especially, further effort is necessary for
the industrial technology of Al-stabilized superconductor production. The
worldwide collaboration with relevant institutes and industries will be
critically important to re-realize and validate the required performances. Some
detector solenoids for mid-scale experiment wound with conventional
copper-stabilized Nb-Ti conductor require precise control of magnetic field
distribution. The development efforts are on-going in terms of the magnetic
field design technology with high precision simulation, coil fabrication
technology and control method of magnetic field distribution.

2
The categories of this paper are: math
27
The categories of this paper are: comp-gas
31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio
0
The categories of this paper are: hep-ph
32
The categories of this paper are: atom-ph
17
The categories of this paper are: q-fin
22
The categories of this paper are: chao-dyn
14
The categories of this paper are: math-ph
25
The categories of this paper are: patt-sol
13
The categories of this paper are: quant-ph
20
The categories of this paper are: acc-phys
16
The categories of this paper are: stat
34
The categories of this paper are: chem-ph
4
The categories of this paper are: cond-mat
5
The categories of this paper are: gr-qc