Conveners
Optics and wavelength shifters
- Nicola Canci
Many noble liquid-based particle detectors contain the medium in an acrylic vessel. The acrylic may be coated by a wavelength shifter if the scintillation light produced from particle interactions with the medium is outside the wavelength range of the photodetectors. In the case of liquid argon, the 128 nm scintillation light must usually pass through a wavelength shifter to be detected by...
In direct dark matter experiments using liquid xenon (Xe), scintillation and ionization signals are produced by an interaction between Xe and dark matter. A scintillation photon can produce an electron through photoelectric effect on electrodes, which is one of the major backgrounds for low-mass dark matter searches. For future direct dark matter experiments using liquid Xe, we are developing...
A metalens is an emerging type of flat optical metamaterial that presents several advantages over a traditional lens, such as reduced cost and reduced bulkiness. We developed a set of software tools and fabrication procedures for the rapid development and characterization of new metalens designs. A large field-of-view centimeter-scale metalens was fabricated, and its performance compared with...
Many photodetection systems of liquid noble experiments are comprised of an external wavelength shifter film, deposited over an optical element. Although this technique has many advantages, the expose external wavelength shifter is delicate and is subjected to problems, for instance, cross-contamination, mechanical and chemical stresses, and photobleaching. To help with these drawbacks, our...
