Advanced LIGO System Guardian

Document #:

LIGO-T1000131-v5

Document type:

T - Technical notes

Abstract:

This note describes a scheme for controlling the Advanced LIGO interferometers with a modular hierarchy of guardian scripts. The scripts allow the user to interface with subsystems as independent state machines, including the ability to continuously verify the current state.

Files in Document:

• PDF file (SystemGuardian.pdf, file is not accessible)
• Zip file of directory (SystemGuardian.zip, file is not accessible)

Topics:

• Sensing and Control

Authors:

• Sam Waldman
• Matthew Evans

Notes and Changes:

Updated figures to match presentation from ISC face2face
Cleaned up some text

Referenced by:

• LIGO-G1300530-v2: The aLIGO Guardian
• LIGO-T1300126-v1: IMC Autolocker