Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Development of a DTL Quadrupole Magnet with a New Electroformed Hollow
  Coil for the Jaeri/Kek Joint Project   Quadrupole electromagnets have been developed with a hollow coil produced
using an improved periodic reverse electroforming. These will be installed in
each of the drift tubes of the DTL (324 MHz) as part of the JAERI/KEK Joint
Project at the high-intensity proton accelerator facility. Measurements of the
magnets' properties were found to be consistent with computer-calculated
estimated. The details of the design, the fabrication process, and the
measurement results for the quadrupole magnet are described.

35
The categories of this paper are: mtrl-th
10
The categories of this paper are: q-bio
29
The categories of this paper are: funct-an
7
The categories of this paper are: hep-th
30
The categories of this paper are: q-alg
4
The categories of this paper are: cond-mat
28
The categories of this paper are: alg-geom
16
The categories of this paper are: stat
0
The categories of this paper are: hep-ph
20
The categories of this paper are: acc-phys
2
The categories of this paper are: math
32
The categories of this paper are: atom-ph
9
The categories of this paper are: nlin
17
The categories of this paper are: q-fin
12
The categories of this paper are: nucl-th
18
The categories of this paper are: econ