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About

Dr. L. Cardiel-Sas is a key figure in experimental cosmology, renowned for instrumental contributions to next-generation dark energy surveys. Their primary research focuses on the design and construction of precision spectroscopic instruments, particularly for the Dark Energy Spectroscopic Instrument (DESI) experiment. As a central contributor to the DESI collaboration, Cardiel-Sas played a pivotal role in developing the robotically-actuated fiber positioning system that enables DESI to simultaneously observe 5,000 galaxies, a technological breakthrough that has garnered over 234 citations for their co-authored 2016 instrument design paper. This work directly supports DESI’s mission to map the universe’s expansion history through baryon acoustic oscillations and redshift-space distortions. Beyond DESI, Cardiel-Sas’s expertise in optomechanical systems and large-scale instrument integration has been critical to advancing ground-based dark energy research. Their engineering innovations have helped transform theoretical cosmology into an observational science, enabling high-precision measurements of cosmic structure growth. With a career spanning major international collaborations, Cardiel-Sas remains a driving force in developing the tools that will unravel the nature of dark energy, making their work essential reading for students and researchers in experimental cosmology and astronomical instrumentation.