Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: PETRA IV study with non-interleaved sextupole scheme   This study is to use the non-interleaved sextupole scheme to design PETRA IV
storage ring, which is an upgrade from PETRA III, toward diffraction-limit
synchrotron light source. The lattice is constructed by mixing different types
of cells. Double minus identity cell is responsible for the chromaticity
correction with non-interleaved sextupoles, while the combined function FODO
cells provide straights with small beta functions for undulators. These are the
basic building bricks. In addition, two hybrid sections with 10-m long super ID
are custom-made to adapt to the configuration of DESY's current cite plan. The
beam dynamic behaviors are simulated and discussed.

32
The categories of this paper are: atom-ph
13
The categories of this paper are: quant-ph
35
The categories of this paper are: mtrl-th
5
The categories of this paper are: gr-qc
34
The categories of this paper are: chem-ph
29
The categories of this paper are: funct-an
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas
28
The categories of this paper are: alg-geom
12
The categories of this paper are: nucl-th
15
The categories of this paper are: nucl-ex
7
The categories of this paper are: hep-th
17
The categories of this paper are: q-fin
4
The categories of this paper are: cond-mat
23
The categories of this paper are: solv-int
24
The categories of this paper are: dg-ga