Speaker
Dr
Haoyu Wang
(Institute of Science Tokyo)
Description
The Japanese gravitational wave detector KAGRA is a 2.5-generation detector built underground using cryogenic techniques. Cooling down test masses to cryogenic temperatures is a way to reduce the thermal noise of gravitational wave detectors. Crystalline materials are considered the most promising materials for fabricating cryogenic test masses and their coatings because of their excellent thermal and optical properties at low temperatures. However, birefringence owing to local impurities and inhomogeneities in the crystal can degrade the performance of the detector. In this poster, we introduce our study on the influence of birefringence effect on the performance of the KAGRA detector.
Author
Dr
Haoyu Wang
(Institute of Science Tokyo)
