Kavli Affiliate: Noah Kurinsky
| First 5 Authors: Jadyn Anczarski, Jadyn Anczarski, , ,
| Summary:
The SPLENDOR Collaboration studies novel narrow-gap semiconductors and
engineered a substrate agnostic detector platform to achieve $mathcalO$(meV)
energy sensitivity designed for low mass dark matter searches. This was
achieved using low-capacitance and low-noise commercial CryoHEMTs in a
split-stage topology integrated throughout a dilution refrigerator. Designed
with a source-follower HEMT at the base temperature stage and a voltage
amplifier at 4,K, this amplifier has input-limited voltage noise of 10
$textnV/sqrttextHz$ and current noise of 100
$textaA/sqrttextHz$ at 1kHz. In agreement with this noise level and a
photon calibration, this amplifier has a $text19 pm text4 $ electron
resolution.
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