Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Development of a PCI Express Based Readout Electronics for the XPAD3
  X-Ray Photon Counting Image   XPAD3 is a large surface X-ray photon counting imager with high count rates,
large counter dynamics and very fast data readout. Data are readout in parallel
by a PCI Express interface using DMA transfer. The readout frame rate of the
complete detector comprising 0.5 MPixels amounts to 500 images per second
without dead-time.

17
The categories of this paper are: q-fin
15
The categories of this paper are: nucl-ex
29
The categories of this paper are: funct-an
16
The categories of this paper are: stat
5
The categories of this paper are: gr-qc
21
The categories of this paper are: adap-org
31
The categories of this paper are: ao-sci
36
The categories of this paper are: cmp-lg
24
The categories of this paper are: dg-ga
8
The categories of this paper are: hep-ex
12
The categories of this paper are: nucl-th
1
The categories of this paper are: cs
30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys
10
The categories of this paper are: q-bio
6
The categories of this paper are: astro-ph