Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: COTS MOS Dosimetry on the MeMOSat Board, Results After 2.5 Years in
  Orbit   We present the results after 2.5 years in or-bit of Total Ionizing Dose (TID)
measurements done using Metal Oxide Semiconductor (MOS) dosimeters on the
MeMOSat board. The MeMOSat board was launched on July 19th 2014 at the BugSat-1
"Tita" microsatellite developed by Satellogic to stay at LEO. We used as
dosimeters p-channel Commercial Off The Shelf (COTS) MOS transistors with gate
oxides of 250~nm. Before launch, a subset of transistors with similar drain
current to voltage (I-V)curves where selected from a group of 100 devices. The
temperature dependence of the (I-V) curves was studied to find the minimum
temperature coefficient biasing point. Then, a calibration subgroup of sensors
was irradiated using a $^{60}$Co gamma source to study their response to TID,
showing responsivities of $\sim$75~mV/krad when the sensors are irradiated
without gate bias. Also, the post irradiation response of the sensors was
monitored, in order to include a correction for low dose rate irradiations,
yielding 30~mV/krad. A biasing and reading circuit was developed in order to
allow the reading of up to 4 sensors.The threshold voltage was monitored during
different periods of the mission. After 2.5 years in orbit,the threshold
voltage of the sensor mounted on the MeMOSat Board had a V$_\mathrm{T}$ shift
of approximately 35~mV corresponds to a dose of 1.2~krads.

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The categories of this paper are: eess
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The categories of this paper are: plasm-ph
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The categories of this paper are: solv-int
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The categories of this paper are: chem-ph
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The categories of this paper are: stat
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The categories of this paper are: nucl-th
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The categories of this paper are: math-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: comp-gas
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The categories of this paper are: q-fin
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The categories of this paper are: q-alg
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The categories of this paper are: q-bio
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The categories of this paper are: astro-ph
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The categories of this paper are: supr-con
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The categories of this paper are: alg-geom
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The categories of this paper are: hep-th