Exploring the Sensitivity of Next Generation Gravitational Wave
  Detectors
  The second-generation of gravitational-wave detectors are just starting
operation, and have already yielding their first detections. Research is now
concentrated on how to maximize the scientific potential of gravitational-wave
astronomy. To support this effort, we present here design targets for a new
generation of detectors, which will be capable of observing compact binary
sources with high signal-to-noise ratio throughout the Universe.
