SPLENDOR Status: Update on Calibrated Charge Amplifier with Novel Narrow Gap Semiconductors

The SPLENDOR (Search for Particles of Light Dark Matter with Narrow-gap Semiconductors) experiment is a low-mass dark matter search through an electron-recoil interaction with novel single-crystal narrow-bandgap (O(10-100mEV)) semiconductors. The SPLENDOR Collaboration developed a readout scheme that couples to various detector substrates (e.g. Si, Eu5In2Sb6, InSb). The charge amplifier is on track to O(1) electron-hole pair resolution by utilizing low-noise cyrogenic high electron mobility transistors (HEMTs). This readout scheme with narrow gap semiconductors will allow the SPLENDOR collaboration to probe sub-MeV (sub-eV) masses for fermionic (bosonic) dark matter. This talk will review the current status of the SPLENDOR collaboration, including calibrated charge amplifier resolution and first data taking with novel narrow gap semiconductors (Eu5In2Sb6).