A Solution to the Dead Layer Problem in Ionization and Phonon - Based Dark Matter Detectors
We report on a study of several different electrode technologies to avoid the “dead-layer” problem in ionization and phonon-based dark matter detectors. We have found the most success with an amorphous blocking-layer electrode structure, and have demonstrated background electron rejection of ≈95% above 20 keV.
Shutt, T., Emes, J., Haller, E. E., Hellmig, J., Sadoulet, B., Seitz, D., Young, B. A., & White, S. (2000). A solution to the dead-layer problem in ionization and phonon-based dark matter detectors. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 444(1), 340–344. https://doi.org/10.1016/S0168-9002(99)01379-0