Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Ultracompact fiber integrated X-ray dosimeter based on scintillators
  coupled to a nano-optical antenna   High energy radiations are nowadays cornerstone in scientific, medical and
industrial imaging and cancer therapy. However, their detection and dosimetry
are restricted to systems of modest compactness that are not compatible with
endoscopy. Here, we report the first experimental imaging and dosimetry of
X-rays with an ultracompact sensor integrated at the end of a single mode
optical fiber (125 $\mu$m full diameter). We realize such a dosimeter by
coupling luminescent scintillators to a nano-optical antenna engineered at the
end of the fiber and by detecting in-fiber outcoupled luminescence with a
photon counter. Direct profile and real-time dosimetry of a X-ray focused beam
reveals a spatial resolution of a few microns together with a sensitivity
better than 10$^3$ X-photons$/$s$/\mu$m$^2$ at energies of 8-10 keV. Because
the nano-optical platform is auto-aligned with respect to the fiber, the
resulting dosimeter is plug-and-play, flexible, and it is suitable for ultralow
footprint endoscopic investigations at higher X-ray energies. Our nano-optical
approach thus offers the possibility of X-ray profiling and dosimetry in
ultra-confined environments, opening up new avenues in the fields of X-ray
imaging, real-time control of cancer radiotherapies and Curie therapies,
medical and industrial endoscopy, etc. With this study, nano-optical antennas
make a first key contribution to the development of X-ray sensing protocols and
architectures.

17
The categories of this paper are: q-fin
34
The categories of this paper are: chem-ph
2
The categories of this paper are: math
23
The categories of this paper are: solv-int
32
The categories of this paper are: atom-ph
1
The categories of this paper are: cs
9
The categories of this paper are: nlin
33
The categories of this paper are: plasm-ph
19
The categories of this paper are: eess
16
The categories of this paper are: stat
21
The categories of this paper are: adap-org
22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
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The categories of this paper are: econ
26
The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex