Acronyms Used in LIGO/LSC
40m Lab
AAAS
AC
ACIGA
ACWP
ADC
ADCU
AdL
AdvLIGO
AEI
AL
ALUK
AM
AMU
ANU
AOS
API
ASC
ATM
BBH
BCWP
BCWS
BH
BH-BH
BNS
BOSEM
BPCU
BS
BSC
BT
BTE
CA
CACR
CAD
CBC
CC
CCB
CCD
CDR
CDRL
CIT
R&D/Test Facility at LIGO/Caltech
Amercian Association for the Advancement of Science
Alternating Current
Australian Consortium for Interferometric Gravitational Astronomy
Actual Cost of Work Performed
Analog to Digital Converter
Analog Data Collection Unit
Advanced LIGO
Advanced LIGO
Albert Einstein Max Planck Gravitational Wave Institute
Advanced LIGO
Advanced LIGO UK consortium
Amplitude Modulation
Atomic Mass Unit
Australian National University
Auxiliary Optics System (subsystem in AL)
Application Programmer's Interface
Alignment Sensing / Control (detector subsystem)
Asynchronous Transfer Module
Binary Black Hole pair
Budgeted Cost of Work Performed
Budgeted Cost of Work Scheduled
Black Hole
Binary Black Hole pair
Binary Neutron Star pair
Birmingham University version of the OSEM, optical sensor - electromagnetic motor unit
Beam Pointing Control Unit
Beamsplitter (optical component)
BeamSplitter Chamber (large vacuum chamber)
Beam Tube
Beam Tube Enclosure
Channel Access (EPICS Control & Monitoring system network protocol)
Center for Advanced Computer Research (Caltech)
Computer Aided Design
Compact Binary Coalescence
Civil Construction
Change CoCD
Conceptual Design
Control and Data System (detector subsystem)
Charged CCDS
ConceptuaCIT
California Institute of Technology
Contract DCMRR Common Mode Rejection Ratio
Caltech
LIGO-M080375-00-M
Acronyms Used in LIGO/LSC
CMS
COC
COS
CP
CP
CW
DAQS
DARM
DC
DCC
DCU
DET
DI
DIA
DMA
DMRO
DRD
DRR
DSP
e2e
EAC
ECD
EDCU
EDSU
eLIGO
EMC
EMI
EOM
EPI
EPICS
ER
ESD
ETF
ETM
E1
FAC
FCMS
FCR
FDR
FFT
Control and Monitoring System (a part of CDS)
Core Optics Components (detector subsystem)
Core Optics Support (detector subsystem)
Chiller Pad (part of FAC)
Compensation Plate (optical element part of TCS)
Continuous Wave
Data Acquisition System
Differential Arm signal (main interferometer output signal for GW signal)
Direct Current (steady state - low frequency)
Document Control Center
Data Collection Unit
Detector system
Digital Interferometry, system to allow pre-lock positioning of mirrors
Data Information Area (of reflected memory)
Direct Memory Access
Differential Mode Read-Out
Design Requirements Document
Design Requirements Review
Digital Signal Processing
End-To-End Modeling (interferometer simulation)
Estimate at Completion
Eddy Current Damping
EPICS Data Collection Unit
EPICS Data Server Unit
Enhanced LIGO
Electro-Magnetic Compatibility
Electro-Magnetic Interference
Electro-Optic Modulator (optical hardware)
External Pre-Isolator
Experimental Physics and Industrial Control System
Engineering Run
Electro-Static Discharge
Engineering Test Facility (Caltech Lab)
End Test Mass (optical component); ETMy, ETMx for x or y 'arm'
Engineering Run 1 (E4 is Engineering Run 4)
Facilities (part of CC)
Facility Control and Monitoring System
Facility Control Room
Final Design Review
Fast (Discrete) Fourier Transform
FFT
Fast Fourier Transform, often used as 'FFT Model' to indicate a numerical pixelled model of optics and beam propagation
FFT
Fast Fourier Transform
LIGO-M080375-00-M
Acronyms Used in LIGO/LSC
FI
FIFO
FM
FM
FMP
FPGA
FR
FS
FTE
GASF
GDS
GEO
GFLOPS
GPM
GPS
GUI
GW
GWDAW
GWIC
HAM
HEPI
HLTS
HPSS
HR
HSTS
HTM
HVAC
HWCI
HWP
Hz
I/O
ICD
IDE
IFO
IL
iLIGO
IMC
InGaAs
INS
INSA
IOO
IP
Faraday Isolator (optical component)
First In First Out
Frequency Modulation
Fold Mirror
Facility Modifications and Preparations
Prgrammable Gate Array
Faraday Rotator (optical component)
Fused Silica
Full Time Equivalent
Geometrical Anti-Spring Filter
Global Diagnostic System
British-German Cooperation for Gravity Wave Experiment
1000 MFLOPS
Gallons Per Minute
Global Positioning System
Graphical User Interface
Gravitational Wave
Gravitational Wave Data Analysis Workshop
Gravitational Wave International Committee
Horizontal Access Module
Hydraulic External Pre-Isolator, and element of the SEI
Ham Large Triple Suspension
High Performance Storage System (IBM)
High Reflectance
Ham Small Triple Suspensions
Higher Transverse Modes (other than TEM00 mode)
Heating Ventilation and Air Conditioning
Hardware Configuration Item
Half-Wave Plate (optical hardware)
Hertz
Input/Output
Interface Control Document
Integrated Drive Electronics (disk standard)
Interferometer
Initial LIGO
Initial LIGO
Input Mode Cleaner (initial LIGO 'MC')
Indium-Gallium-Arsenide
Installation
French National Institute for Applied Science
Input Optics (detector subsystem, formerly named Input / Output Optics)
Internet Protocol, or Inverted Pendulum
LIGO-M080375-00-M
Acronyms Used in LIGO/LSC
ISC
ISI
ISR
ITM
IV&V
IXS
kpc
LA
LAE
LAI
LAL
LAS
LASTI
LDAS
LDR
LHAM
LHO
LIGO
LISA
LLO
LMA
LMXB
LOS
LSC
LVDT
LVEA
LZH
MAP
MB
MC
MCM
MDC
MEPI
MFLOPS
MGASF
MIMO
MIT
MMT
MOPA
MOU
Mpc
Interferometer Sensing and Control
Internal Seismic Isolation, an element of the SEI
Interrupt Service Routine
Input Test Mass (optical component); ITMx, ITM y for y or x 'arm'
Integration, Verification, and Validation
Information eXchange Services
Kiloparsec
Louisiana
Laser Enclosure Area
Lock Acquisition Interferometer
LIGO Algorithm Library
Lock Acquisition System
LIGO Advanced Systems Test Interferometer (test facility at LIGO/MIT)
LIGO Data Analysis System
Laser Diode Room
Horizontal Access Module at Louisiana Site
LIGO Hanford Observatory
Laser Interferometer Gravitational-Wave Observatory
Laser Interferometer Space Antenna
LIGO Livingston Observatory
Laboratoire des Matériaux Avancés - vendor for optical coatings in Lyon, France
Low-Mass X-Ray Binary
Large Optic Suspension
Length Sensing / Control (detector subsystem)
Linear Variable Differential Transducer
Laser and Vacuum Equipment Area (of the LIGO observatories)
Laser Zentrum Hannover, partner with AEI
Memory Allocation Pointer (reflected memory)
Megabyte
Mode Cleaner
Mode Cleaner Mirror
Mock Data Challenge
Magnetic External Pre-Isolator
Million Floating Point Operations Per Second
Monolithic Geometrical Anti-Spring Filter
Multiple Input, Multiple Output
Massachusetts Institute of Technology
IFO Mode Matching Telescope
Master Oscillator-Power Amplifier
Memorandum of Understanding
Megaparsec
LIGO-M080375-00-M
Acronyms Used in LIGO/LSC
MPI
MRE
MSPRC
MSR
MSU
MTBF
MTTR
MZ
NA
NBI
Nd:YAG
NDS
NPRO
NS
NS-NS
OMC
OOP
OPD
OSB
OSEM
OTF
PAC
PCI-X
PD
PDD
PDH
PDR
PDRR
PDT
PEM
PM
PMC
PMP
PO
POSIX
ppm
PRC
PRM
PRN
PSL
PZT
Message Passing Interface
Major Research Equipment
Marginally Stable Power Recycling Cavity
Mass Storage Room
Moscow State University
Mean Time Between Failures
Mean Time To Repair
Mach-Zender Interferometer
Not Applicable
Neutron Star Binary Inspiral
Neodynium doped Yttrium Aluminum Garnet (laser gain medium)
Network Data Server
Non-Planar Ring Oscillator
Neutron Star
Binary Neutron Star pair
Output Mode Cleaner
Object-Oriented Programming
Optical Path Difference
Operations Support Building
Ootical Sensor Electromagnetic Motor (suspension sensor/actuator unit)
Optics Test Facility at Caltech
Program Advisory Committee
Personal Computer Interconnect Extended -- computer standard for peripheral communication
PhotoDiode
Preliminary Design Document
Pound-Drever-Hall (reflection locking technique)
Preliminary Design Review
Preliminary Design Requirements Review
Photodetector
Physics Environment Monitoring
Phase Modulation, or Project Management
Pre-Mode Cleaner
Project Management Plan
Pick Off (usually in reference to a laser beam)
Portable Operating System Interface (IEEE Standard 1003.1)
Parts Per Million
Power Recycling Cavity
Power Recycling Mirror
Pseudo-Random Noise
Pre-Stabilized Laser (detector subsystem)
Piezo-electric Transducer (mechanical hardware)
LIGO-M080375-00-M
Acronyms Used in LIGO/LSC
Q
resonant system Quality factor (inverse of loss)
QND
Quantum Non-Demolition
QPD
Quadrant Photo Diode
Quad
Quadruple test mass suspension
RAID
Removable Array of Independent Drives
RAM
Random Access Memory
RC
Radius of Curvature of a Reflective Mirror
REO
Research Electro-Optics (Company Name)
REU
Research Experience for Undergraduates
RF
Radio Frequency
RFP
Request for Proposal
RH – relative humidity
RM
Recycling Mirror
RMS
Root mean square
RSE
Resonant Sideband Extraction
rtHz – square root Hertz
S6
GW Observation Science Run 6
s
Second
s/s
Samples/second
SAH
Sensor Actuator Heads
SAP
Sapphire Core Optics
SAS
Seismic Attenuation System
SCSI
Small Computer Standard Interface
SEI
Seismic Isolation
SLC
Stray Light Control
SM
Suspended steering Mirror (~4" diameter, simple sling suspension)
SOS
Small Optic Suspension
SPI
Seismic Platform Interferometer
SPRC
Stable Power Recycling Cavity
SR
Signal Recycled (interferometer configuration)
SRC
Signal Recycling Cavity
SRD
Initial LIGO Science Requirements Document; also Initial LIGO planned performance target
SRM
Signal Recycling Mirror
SRS
Software Requirement Specification
SUP
Support Equipment
SURF
Summer Undergraduate Research Foundation
SUS
Suspension Subsystem (sometimes also Suspension assembly)
SW
Solid Works (computer aided design software)
SYS
Detector Systems Engineering
TAMA
Japanese Interferometric Gravitational-Wave Project
TB
Terabytes
LIGO-M080375-00-M
Acronyms Used in LIGO/LSC
TBD
TCP
TCS
TFP
TGG
TNI
Triple
UDP
UF
UGF
UHV
UL
VE
VEA
VIRGO
VME
VSRM
WA
WAN
WBS
WFS
To Be Determined (or To Be Done)
Transport Control Protocol
Thermal Compensation System
Thin Film Polarizer (optical hardware)
Terbium-Gallium-Garnet (optical material used in Faraday Isolators)
Thermal Noise Interferometer (R&D/Test interferometer at LIGO/Caltech)
Triple auxiliary optic suspension
User Datagram Protocol
University of Florida
Unity Gain Frequency
Ultra High Vacuum
Upper Limits
Vacuum Equipment (LIGO instrument chambers)
Vacuum Equipment Area (Observatory high bays)
French-Italian Laser Interferometer Collaboration
Versa Module Eurocard
Variable Signal Recycling Mirror
Washington
Wide Area Network
Work Breakdown Structure
Wave Front Sensors
LIGO-M080375-00-M