Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Demonstration of MHz frequency domain multiplexing readout of 37
  transition edge sensors for high-resolution x-ray imaging spectrometers   We report on the development and demonstration of a MHz frequency domain
multiplexing (FDM) technology to read out arrays of cryogenic transition edge
sensor (TES) X-ray microcalorimeters. In our FDM scheme, TESs are AC-biased at
different resonant frequencies in the low MHz range through an array of
high-$Q$ LC resonators. The current signals of all TESs are summed at
superconducting quantum interference devices (SQUIDs). We have demonstrated
multiplexing for a readout of 31 pixels using room temperature electronics,
high-$Q$ LC filters and TES arrays developed at SRON, and SQUID arrays from
VTT. We repeated this on a second setup with 37 pixels. The summed X-ray
spectral resolutions $@$ 5.9 keV are $\Delta E_{\rm 31 pix ~MUX}=2.14\pm0.03$
eV and $\Delta E_{\rm 37 pix ~MUX}=2.23\pm0.03$ eV. The demonstrated results
are comparable with other multiplexing approaches. There is potential to
further improve the spectral resolution and to increase the number of
multiplexed TESs, and to open up applications for TES X-ray microcalorimeters.

15
The categories of this paper are: nucl-ex
22
The categories of this paper are: chao-dyn
37
The categories of this paper are: supr-con
25
The categories of this paper are: patt-sol
17
The categories of this paper are: q-fin
31
The categories of this paper are: ao-sci
28
The categories of this paper are: alg-geom
11
The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys
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The categories of this paper are: adap-org
26
The categories of this paper are: bayes-an
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The categories of this paper are: hep-th
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The categories of this paper are: math-ph
5
The categories of this paper are: gr-qc
27
The categories of this paper are: comp-gas