Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Implementation of A Nanosecond Time-resolved APD Detector System for NRS
  Experiment in HEPS-TF   A nanosecond time-resolved APD detector system is implemented for Nuclear
Resonance Scattering (NRS) experiments in High Energy Photon Source-Test
Facility (HEPS-TF) project of China. The detector system consists of three
parts: the APD sensors, the fast preamplifiers and the TDC readout electronics.
To improve the reception solid angle and the quantum efficiency, the C30703FH
APDs (fabricated by Excelitas) are used as the sensors of the detectors. The
C30703FH has an effective light-sensitive area of 10X10 mm2 and an absorption
layer thickness of 110 {\mu}m. The fast preamplifier with gain of 59 dB and
bandwidth of 2 GHz is designed to readout the weak signal outputted by the
C30703FH APD. The detector system can work in single photon measurement mode
because the preamplifier increases the signal-to-noise ratio. Moreover, the TDC
is realized by FPGA multiphase method with a resolution bin of 1ns. The arrival
time of all scattering events between two start triggers can be recorded by the
FPGA TDC. In the X-ray energy of 14.4 keV, the time resolution (FWHM) of the
developed detector (APD sensor + fast amplifier) is 0.86 ns, and the whole
detector system (APD sensors + fast amplifiers + TDC readout electronics)
achieves a time resolution of 1.4 ns.

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The categories of this paper are: atom-ph
10
The categories of this paper are: q-bio
13
The categories of this paper are: quant-ph
12
The categories of this paper are: nucl-th
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The categories of this paper are: supr-con
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The categories of this paper are: mtrl-th
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The categories of this paper are: eess
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The categories of this paper are: chao-dyn
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The categories of this paper are: funct-an
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The categories of this paper are: hep-ex
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The categories of this paper are: dg-ga
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The categories of this paper are: chem-ph
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The categories of this paper are: solv-int
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The categories of this paper are: q-fin
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The categories of this paper are: alg-geom
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The categories of this paper are: plasm-ph