A♯ Strain Sensitivity

Document #:

LIGO-T2300041-v2

Document type:

T - Technical notes

Abstract:

The A♯ strain sensitivity. Details of the detector, parameters, and noise budgets are given in the Post-O5 report LIGO-T2200287.

Full noise budgets and data are available from
https://git.ligo.org/post-o5/sensitivity-curves

Files in Document:

• Asharp_strain.txt (146.5 kB)

Topics:

• Upgrades
• Conceptual Design

Authors:

• Kevin Kuns
• Peter Fritschel

Notes and Changes:

The coating thermal noise (CTN) has been increased from being at 25% of the Advanced LIGO level, to 50% of the Adv LIGO level. This was done because the higher CTN level is something that could plausibly be included in an A# funding proposal as of early 2026.

Related Documents:

Referenced by:

• LIGO-T1500293-v13: Unofficial sensitivity curves (ASD) for aLIGO, Kagra, Virgo, Voyager, Cosmic Explorer, and Einstein Telescope