Ligo_2488

Detector engineers install hardware upgrades in preparation for Advanced LIGO's third observing run.

Detector engineers Hugh Radkins (foreground) and Betsy Weaver (background) are pictured here inside the vacuum system of the detector at LIGO Hanford Observatory, beginning the hardware upgrades necessary for Advanced LIGO's third observing run. Image credit: LIGO/Caltech/MIT/Jeff Kissel