The LIGO Scientific Collaboration (LSC) conducts research and development directed
toward the improvement of the current generation of LIGO and GEO interferometers as well …

1 Design Sensitivity Curve for Advanced LIGO. This is the baseline aLIGO Noise Budget
(GWINC v2. 0). 125 W input power; broadband RSE tuning (1). There is significant work …

This Instrument Science White Paper describes the work by the LIGO Scientific
Collaboration (LSC) to conduct research and development to improve the current generation …

Instrument Science White Paper 2022-2023 Page 1 LASER INTERFEROMETER
GRAVITATIONAL WAVE OBSERVATORY - LIGO - =============================== LIGO …

Metals are not perfect crystals, and thus, when they are stressed, there might occur some
local deformations due to grain slippage or similar microscopic events. Due to mechanical …

In metals, dislocations are'pinned'by obstacles like grain boundaries or other
surfaces.(Dislocations are dis-junctions in the periodic lattice structure.) Under small …

Crackling noise arises when a system responds to external conditions through discrete,
impulsive releases of energy. Various locations in the Advanced LIGO setup have been …

In crystalline materials, dislocation dynamics can generate strain noise upon being applied
by rapidly-changing, oscillatory stress in the elastic regime. This so-called crackling noise …