Speaker
Description
We are developing a facility named Academia Sinica Gravitational Physics Research Facility (ASGRAF) since 2023. One of its main studies is characterization of mirror coatings for LIGO Voyager. We plan to measure mechanical loss, optical loss, and thermal noise of unexplored materials of coating. Our focus is at large coatings in low temperature. We constructed a new gas line in Taiwan Semiconductor Research Institute for making SiON coatings with low pressure chemical vapor deposition (LPCVD) method, considering its expected high uniformity and low mechanical loss in low temperature. We are also developing a cryogenic gentle nodal suspension (GNS) system for measurement of the new coatings in Academia Sinica. We will report the first test of the fabrication with new gas line and a room temperature demonstration of GNS.
