Large mass single electron resolution detector for dark matter and neutrino elastic interaction searches Academic Article uri icon

abstract

  • Large mass single-electron-resolution solid state detectors are desirable to search for low mass dark matter candidates and to measure coherent elastic neutrino nucleus scattering (CE$
    u$NS). Here, we present results from a novel 100 g phonon-mediated Si detector with a new interface architecture. This detector gives a baseline resolution of $sim 1 e^{-}/h^{+}$ pair and a leakage current on the order of $10^{-16}$ A. This was achieved by removing the direct electrical contact between the Si crystal and the metallic electrode, and by increasing the phonon absorption efficiency of the sensors. The phonon signal amplification in the detector shows a linear increase while the signal to noise ratio improves with bias voltage, up to 240 V. This feature enables the detector to operate at a low energy threshold which is beneficial for dark matter and CE$
    u$NS like searches.

published proceedings

  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

altmetric score

  • 2

author list (cited authors)

  • Iyer, V., Mirabolfathi, N., Agnolet, G., Chen, H., Jastram, A., Kadribasic, F., ... Platt, M.

citation count

  • 2

complete list of authors

  • Iyer, V||Mirabolfathi, N||Agnolet, G||Chen, H||Jastram, A||Kadribasic, F||Kashyap, VKS||Kubik, A||Lee, M||Mahapatra, R||Mohanty, B||Neog, H||Platt, M

publication date

  • September 2021