## This conference has been cancelled. ##
The worldwide network is expanding in sky coverage, live time and sensitivity with the KAGRA interferometer in Japan joining it, adding underground cryogenic operation to the global observatory. While LIGO and Virgo progress toward the highest sensitivity allowed by their infrastructures, intense development and experimentation at GEO600 and other laboratories is continuing to meet the challenges posed by third generation requirements.
These include reducing seismic and Newtonian noise at low frequency, possibly in the limited volume of underground experimental halls, reducing thermal noise with materials suitable for large mirrors and different light wavelengths, managing quantum noise with new optical and read out schemes. Cryogeny, high circulating power, but also stray light mitigation have to be understood to fully exploit the instruments. Space projects are progressing and there is a renewed interest in high frequency signals. The workshop, with attendance from all over the world, is organized around sessions with specific titles with poster or oral contributions proposed to the conveners by participants.
The conference has been cancelled. We plan to have GWADW2021 in the same venue. The detail will be announced as soon as it is settled.