Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Estimating relationship between the Time Over Threshold and energy loss
  by photons in plastic scintillators used in the J-PET scanner   Time-Over-Threshold (TOT) technique is being used widely due to its
implications in developing the multi channel readouts mainly when fast signal
processing is required. Using TOT technique as a measure of energy loss instead
of charge integration methods significantly reduces the signals readout cost by
combining the time and energy information. Therefore, this approach can
potentially be used in J-PET tomograph which is build from plastic
scintillators characterized by fast light signals. The drawback in adopting
this technique is lying in the non-linear correlation between input energy loss
and TOT of the signal. The main motivation behind this work is to develop the
relationship between TOT and energy loss and validate it with the J-PET
tomograph.
  The experiment was performed using the $^{22}$Na beta emitter source placed
in the center of the J-PET tomograph. One can obtain primary photons of two
different energies: 511 keV photon from the annihilation of positron (direct
annihilation or through the formation of para-Positronim atom or pick-off
process of ortho-Positronium atoms), and 1275 keV prompt photon. This allows to
study the correlation between TOT values and energy loss for energy range up to
1000 keV. As the photon interacts dominantly via Compton scattering inside the
plastic scintillator, there is no direct information of primary photon energy.
However, using the J-PET geometry one can measure the scattering angle of the
interacting photon. Since, $^{22}$Na source emits photons of two different
energies, it is required to know unambiguously the energy of incident photons
and its corresponding scattering angle for the estimation of energy deposition.
In this work, the relationship between Time Over Threshold and energy loss by
interacting photons inside the plastic scintillators used in J-PET scanner is
established for a energy deposited range 100-1000 keV

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The categories of this paper are: q-alg
2
The categories of this paper are: math
31
The categories of this paper are: ao-sci
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio
12
The categories of this paper are: nucl-th
14
The categories of this paper are: math-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: cmp-lg
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The categories of this paper are: eess
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The categories of this paper are: patt-sol
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The categories of this paper are: solv-int
9
The categories of this paper are: nlin
13
The categories of this paper are: quant-ph
5
The categories of this paper are: gr-qc
8
The categories of this paper are: hep-ex