CARM / ALS Electro-Optical Controls Diagram
- Document #:
- LIGO-G1500456-v1
- Document type:
- G - Presentations (eg Graphics)
Other Versions:
| LIGO-G1500456-v4
05 Sep 2018, 15:29 |
| LIGO-G1500456-v2
06 Mar 2018, 13:53 |
- Abstract:
- The CARM / ALS system is arguably one of the most complicated control systems in the LIGO IFOs, and spanning the most subsystems. A combination of ISC, PSL, IOO, CDS, and ALS, designed and documented by many, it's rare to get the "whole" picture on one page. Not mention it has evolved constantly as both sites commissioned their lock aquisition sequence. This is my attempt to capture it all, as a post-published supplement to P1400105. Note that all RF frequencies have been rounded for legibility and compactness. Check out referenced documentation for exact frequencies.
- Files in Document:
-
- G1500456-v1_ALS_ElectroOptical_ControlSchematic.pdf (file is not accessible)
- Other Files:
- G1500456-v1_ALS_ElectroOptical_ControlSchematic.graffle (file is not accessible)
- Topics:
- Authors:
- Related Documents:
- LIGO-P1400105: Achieving Resonance in the Advanced LIGO Gravitational-Wave Interferometer
- LIGO-P1400177: Advanced LIGO
- LIGO-D1200136: ALS Fiber Distribution Assembly
- LIGO-T0900144: Adv. LIGO Arm Length Stabilization Design
- LIGO-T1000555: Adv. LIGO Arm Length Stabilisation - Vertex Layout Overview
- LIGO-T1300883: Nominal ALS Frequencies
- LIGO-T1200429: Arm Length Stabilisation - FIBRE Phase-Locked-Loop
- LIGO-T1400317: Arm Length Stabilization (ALS) Vertex Detection System
- LIGO-T0900649: PSL Final Design Document
- LIGO-T0900138: Frequency Difference Divider
- LIGO-D1400372: Simple diagram of ALS optical layout
- LIGO-D1001423: ISC End Station Field Rack Layout
- LIGO-D1200666: OBSOLETE Vertex ISC Electronics Cable Layout
- LIGO-D0900605: Low Noise Voltage Controlled Oscillator (VCO) Assembly
- LIGO-D1200151: Common Mode Summing Node
- LIGO-D1002178: RF Frequency Doubler Assembly
- LIGO-D1002476: Phase Frequency Discriminator Assembly
- LIGO-G1300524: The Arm Length Stabilisation System for Advanced LIGO Lock Acquisition
- LIGO-G1300258: Arm Length Stabilization at LHO