GLAST and LAT Acronyms …

                   GLAST and LAT Acronyms                                                 11/15/02
LAT-MD-01153-01
1553              MIL-STD-1553 Bus (Interface between Spacecraft and LAT)
A&T               Assembly & Test
ACD               The LAT Anti-Coincidence Detector Subsystem
ACE               Advanced Composition Explorer
ACS               Attitude Control System
ACT               Atmospheric Cherenkov Telescope
ACT+COM           ACWP + Oustanding Commitments
ACTUALS           ACWP
ACWP              Actual Cost of Work Performed
ADC               Analog to Digital Converter
ADC               Analog-to-Digital Converter
Aeff              Effective Area
AEM               ACD Electronics Module
AFEE              Analog Front End Electronics
AGN               Active Galactic Nuclei
AIAA              American Institute of Aeronautics and Astronautics
AIM               Applied Integration Management
AIP               American Institute of Physics
AMANDA            Antarctic Muon and Neutrino Detector Array
AMI               American Microsystems Inc.
AMOS              Air Force Maui Optical Site
AMS               Alpha Magnetic Spectrometer
ANSI              American National Standards Institute
AO                Announcement of Opportunity
AOS               Advanced Orbiting Systems
APS               American Physical Society
ARGOS             Advanced Research and Global Observations Satellite
ASI               Italian Space Agency
ASIC              Application Specific Integrated Circuit
ASP               Active Server Pages
ASQC              American Society for Quality Control
ASSY              Assembly
ATD               Advanced Technology Development Program (NASA)
ATD               Advanced Technology Development
ATIC              Advanced Thin Ionization Calorimeter
                  Atmospheric Laboratory for Application and Science; also: A Toriodal Large Acceptance
ATLAS             Spectrometer; also: an Expendable Launch Vehicle
AV                Available



BAC               Budgeted at Completion
BCWP              Budgeted Cost of Work Performed
BCWS              Budgeted Cost of Work Scheduled
Bd                Board
BDC               Backgrounds Data Center
BE                Budget Element
BEA               Base Electronics Assembly
BER               Bit Error Rate
BF                Base Frame
BFEM              Balloon Flight Engineering Model
BGL               Bismuth Germinate
BIU               Balloon Interface Unit
Bps               Bits per second
BSP               Board Support Package
BT                Beam Test
BTEM              Beam Test Engineering Model
BUD+COM        BCWS+Planned Commitments


C&DH           Command and Data Handling Subsystem
C&DH           Command and Data Handling
C.R.           Cosmic Ray
CAD            Computer Aided Design
CAL            The LAT Calorimeter Subsystem
CAM            Cost Account Manager

CANGAROO       Collaboration between Australia and Nippon for a Gamma-Ray Observatory in the Outback
CAP            Cost Account Plan
CAPRICE        Cosmic Antiparticle Ring-Imaging Cherenkov Experiment
CAPW           Code Field Name for CAP Work Breakdown Structure
CAT            Cherenkov Array at Themis
C-C            Carbon Composite
CCB            Configuration Control Board
CCHP           Constant Conductance Heat Pipes
CCP            Contamination Control Plan
CCSDS          Consultative Committee for Space Data Systems
CCSDS Packet   A Spacecraft Packet Telecommand Standard Approved by the CCSDS
CD             Compact Disk
CDE            Crystal Detector Element
CDF            Collider Detector at Fermilab
CDM            Configuration & Data Management
CDR            Critical Design Review
CEA            Commissariat a l'Energes Atomique
CENBG          Centre d'etudes Nucleaires de Bordeaux Gradignan
CERN           Centre European pour la Recherche Nucleaire
CFC            Carbon-Fiber Composite
CFG            Configuration
CGRO           Compton Gamma Ray Observatory
CheX           Confined Helium Experiment
CIL            Critical Items List
CLA            Coupled Loads Analysis
CLUL           Confidence Level Upper Limit
CM             Configuration Management; also: Center of Mass
CMOS           Complementary Metal Oxide Semiconductor
CNO            Carbon-Nitrogen-Oxygen
CNRS           Centre National de la Recherche Scientifique
COMM           Communications
COS-B          European Gamma-ray Astronomy Satellite
COTS           Commercial Off-the-Shelf
CPI            Const Performance Index
CPN            Code Field Name for Work Packages
CPR            Cost Performance Report
CPU            Central Processing Unit
CsI (TI)       Cesium Iodide crystal doped with Thallium
CSOC           Consolidated Space Operations Center
CSSR           Cost/Schedule Status Reports
CSTA           California Science Teachers Association
CTE            Coefficient of Thermal Expansion
CU             Calibration Unit
CVS            Cost Variance
CVS            Concurrent Versions System
CY             Calendar Year
DAC      Digital to Analog Converter
         Departement d'Astrophysique, de physique des Particules, de physique Nucleaire et de
DAPNIA   L'Instrumentation Associee
         Data Acquisition System also: LAT Electronics, Data Acquisition and Flight Software
DAQ      Subsystem
DB       Data Base
DC       Direct Current
DESY     Deutsches Electron-Synchrotron
DM       Development Model
DMILL    Durci Mixte Isolant Logico Lineaire
DOD      Department of Defense
DOE      Department of Energy
DOF      Degrees of Freedom
DOORS    Dynamic Object Oriented Requirements System
DPD      Dual PIN PhotoDiode
dPDR     Delta Preliminary Design Review
DPF      Data Processing Facility
DRAM     Dynamic Random Access Memory
DRB      Design Review Board
DRL      Data Requirements List
DRT      Design Review Team
DSF      Data Switch FPGA
DSM      Direction des Sciences de la Matiere
DSP      Digital Signal Processor

E        Energy
EAC      Estimate at Completion
EAF      European Analysis Facility
EB       Event Builder
ECR      Engineering Change Request
ED&I     Engineering Design & Integration
EDAQ     the LAT Electronics, Data Acquisition and Flight Software Subsystem
EEE      Electrical, Electronic and Electromechanical
EEPROM   Electrically Erasable Programmable Read Only Memory
EGRET    Energetic Gamma Ray Experiment Telescope on CGRO
EGS      Electron Gamma Shower
EGSE     Electrical/Electronics Ground Support Equipment
ELEC     Electrical
ELX      Electronics
EM       Engineering Model
EM1      Engineering Model 1
EM2      LAT Engineering Model 2, multiple towers
EMC      European Muon Collaboration
EMC      Electromagnetic Compatibility
EMI      Electromagnetic Interference
EOL      End of Life
EP       Event Processor
EPO      Education and Public Outreach
EPU      Event Processing Unit
ESA      End Station A
ESD      Electrostatic Discharge
ETC      Estimate to Complete
EV       Earned Value (BCWP)
EWR      Eastern and Western Range


FAMM     Full Scale ACD Mechanical Model
FAR      Federal Acquired Regulation
FAX      Facsimile
FCDI     Flex-Circuit Detector Interconnect
FEA      Finite Element Analysis
FEE      Front-End Electronics
FEM      Finite Element Model
FERC     Front End Readout Chip
FFP      Firm Fixed Price
FIFO     First In First Out
FITS     Flexible Image Transport System
FM       Flight Module
FMA      Flight Module A
FMB      Flight Module B
FMEA     Failure Modes and Effects Analysis
FNAL     Fermi National Accelerator Laboratory
FOM      Figure of Merit
FOV      Field of View
FPGA     Field Programmable Gate Array
FREE     Front End Electronics
FSW      Flight Software
FTA      Fault Tree Analysis
FTE      Full Time Equivalent
FTOOL    Fits Tool
FU       Flight Unit
FUSE     Far Ultra Violet Spectroscopic Explorer
FWHM     Full Width Half Maximum
FY       Fiscal Year

GAFE     GLAST ACD Front End- Analog ASIC
GARC     GLAST ACD Readout Controller- Digital ASIC
GAS      Global Trigger, ACD, DAQ and SIG
GASU     GAS Unit
GBM      Gamma-ray Burst Monitor
Gbps     Gigabits per second
GCFE     GLAST Calorimeter Front-end Electronics - Analog ASIC
GCN      Global Communications Network
GCN      Gamma-ray Burst Coordinate Network
GCRC     GLAST Calorimeter Read-out Controller - Digital ASIC
GEM      Global-Trigger Electronics Module
GeV      Giga Electron Volts
GEVS     General Environmental Verification Specification
GIDEP    Government-Industry Data Exchange Program
GIOC     GBM Instrument Operations Center
GITD     GLAST Instrument Technology Development
GLAST    Gamma-ray Large Area Space Telescope
GLT      Global Trigger
GN       Ground Network
GNC      Guidance, Navigational and Control
GNU      GNU's Not Unix
GO       Guest Observer
GOLF     Global Oscillations at Low Frequencies
GPS      Global Positioning System
GRAPWG   Gamma-Ray Astronomy Program Working Group
GRB      Gamma-ray Burst
GRIS     Gamma Ray Imaging Spectrometer
GRO      Gamma Ray Observatory
GSE      Ground Support Equipment
GSFC     Goddard Space Flight Center
GSI      Gesellschaft für Schwerionenforschung
GT       Global Trigger
GTFE     GLAST Tracker Front-end Electronics (ASICS)
GTM      Global Trigger Module
GTRC     GLAST Tracker Read-out Controller
GUI                Graphical User Interface

HBCU               Historical Black Colleges & Universities
HE                 High Energy
HEAO               High Energy Astrohphysics Observatory
HEASARC            High Energy Astrophysics Science Archive Research Center
HEO                High Earth Orbit
HEP                High Energy Physics
HEPA               High Efficiency Particulate Arresting
HEPL               W.W. Hansen Experimental Physics Laboratory at Stanford University
HEXTE              High Energy X-ray Timing Experiment
HI discriminator   A discriminator set for the high end of a range
HLD                High Level Discriminator
HP                 Hewlett Packard
HPK                Hamamatsu Photonics K (Japan)
HSK                Housekeeping
HSM                Hierarchical Storage Manager
HST                Hubble Space Telescope
HV                 High Voltage
HVBS               High Voltage Bias Supply
HVPS               High Voltage Power Supply
HW                 Hardware

I&T                Integration & Test
I&TM               I&T Manager
I/F                Interface
I/O                Input/Output
IA                 Internal Available
IAU                International Astronomical Union
IC                 Integrated Circuit
ICD                Interface Control Document
I-CDR              Instrument Critical Design Review
ICS                Interface and Control System
IDB                Instrument Data Bus
IDL                Interactive Data Language
IDS                Interdisciplinary Scientist
IDT                Instrument Design Team
IEEE               Institute of Electrical and Electronics Engineeers
IFCT               Integration, Facilities Configuration & Test
IIS                Instrument Interface Structure
IMDC               Integrated Mission Design Center
IN                 Internal Need
IN2P3              Institut National de Physique Nucleaire et de Physique des Particules
INFN               Istituto Nazionale Di Fisica Nucleare, (Italy)
IOC                Instrument Operations Center
I-PDR              Instrument Preliminary Design Review
IPI                Instrument Principal Investigator
IPM                Instrument Project Manager
IPO                Instrument Project Office
IPS                Instrument Power System
IPS                Integrated Project Schedule
IRD                Interface Requirement Document
IRF                Instrument Response Function
IS                 Instrument Scientist
ISAS               Institute for Space and Astronautical Science, Japan
ISE                Instrument System Engineer
ISEE               International Sun-Earth Explorer
ISET               Instrument System Engineering Team
ISM                Inter-Stellar Medium
ISO                International Organization for Standardization
ISP                Internet Service Provider
ISS                International Space Station
ITM                Instrument Technical Manager
IV&V               Independent Verification and Validation

JGC                Japanese GLAST Collaboration
JOG                Joint Operating Group
JON                Job Order Number
JPL                Jet Propulsion Laboratory
JSC                Johnson Space Center




Kbps               Kilobits per second
KEK                National Laboratory for High Energy Physics, Japan
kg                 Kilogram
KSC                Kennedy Space Center
KTH                Royal Institute of Technology, Sweden

L1T                Level One Trigger
L2T                Level Two Trigger
L3T                Level Three Trigger
LASCO              Large Angle and Spectrometric Coronagraph Experiment
LAT                GLAST Large Area Telescope
LED                Light Emitting Diode
LEOP               Launch and Early Orbit Phase
LHA                Layer Hit Address
LHC                Large Hadron Collider
LHEA               Laboratory for High Energy Astrophysics at NASA's GSFC
LIOC               LAT Instrument Operations Center
LLI                Long Leadtime Items
LLIS               Lessons Learned Information System
LM                 Lockheed Martin
LM-ATC             Lockheed-Martin Advanced Technology Center
LMMS               Lockheed Martin Missiles and Space Corporation
LO Discriminator   A discriminator set for the low end of a range
LOE                Level of Effort
LOF                LAT Operations Facility
LPNHE-X            Laboratoire de Physique Nucleaire des Hautes Energies de l'Ecole
LRE                Latest Revised Estimate (EAC)
LRP                Low Rate Physics
LRS                Low Rate Science
LV                 Low Voltage
LV                 Launch Vehicle
LVDS               Low Voltage Differential Signal


M&S                Materials & Services
MA                 Multiple Access
MAG                Mission Assurance Guidelines
MAPMT              Multi-Anode Phototube Multiplier
MAR                Mission Assurance Requirements
Mbps               Megabits per second
MC                 Monte Carlo
M-CDR              Mission Critical Design Review
MCM                Multi Chip Module
MDI                Michelson-Doppler Imager
MECH               Mechanical
MECO               Main Engine Cut-off
MeV     Mega Electron Volts
MGSE    Mechanical Ground Support Equipment
MIL     Military
MIP     Minimum Ionizing Particle
MLEV    Milestone Level
MLI     Multi-Layer Insulation
MO&DA   Mission Operations & Data Analysis program phase
MOA     Memorandum of Agreement
MOC     Mission Operation Center
MODA    Mission Operations and Data Analysis
MOSIS   Metal Oxide Semiconductor Implementation System
MOU     Memorandum of Understanding
M-PDR   Mission Preliminary Design Review
MPLS    Multi-Purpose Lift Sling
MSFC    Marshall Space Flight Center
MSI&T   Mission Systems Integration & Test program phase
MSI&T   Missions Systems I&T
MSPSP   Missile System Prelaunch Safety Package
MSS     Mission System Specification
MSSM    Minimum Super Symmetry Model


NaI     Sodium Iodide
NAO     National Astronomical Observatory
NAR     Non Advocate Review
NAS     National Academy of Sciences
NASA    National Aeronautics and Space Administration
NCR     Nonconformance Report
NCST    Naval Center for Space Technology
NCTM    National Council of Teahcers of Mathematics
ND      Need
NDE     Non-Destructive Evaluation
NDI     Non-Development Item
NEMO    Naval Earth Map Observer
NFS     Network File System
NIM     Nuclear Instruments and Methods in Physics Research
NISN    NASA Integrated Services Network
NPD     NASA Policy Directive
NPSL    NASA Parts Selection List
NRL     Naval Research Laboratory
NSBF    National Scieitific Balloon Facility
NSF     National Science Foundation
NSTA    National Science Teachers Association

OBS     Organizational Breakdown Structure
ODBC    Open Data Base Connectivity
OHP     Operational Health Physics
OM      Operations Model
OMEI    Other Minority Educational Institutions
ORU     Organized Research Units
OSHA    Occupational Safety and Health Administration
OSS     NASA Office of Space Science
OSSE    Oriented Scintillation Spectrometer Experiment on CGRO
OTL     Office of Technology Licensing

P&SA    Performance and Safety Assurance
PA&S    Performance Assurance and Safety
PAF     Payload Attach Fitting
PAIP    Peformance Assurance Implementation Plan
PAM     Performance Assureance Manager
PAN       Polyacrylonitrile
PAPL      Program Approved Parts List
PAT       Pointing Accuracy per Tray
PCB       Printed Circuit Board
PCC       Power Conditioning Card
PCC       Laboratoire de Physique Corpusculaire et Cosmologie
PCM       Project Control Manager
PCS       Pointing Control Subsystem
PDA       Personal Digital Assistant
PDR       Preliminary Design Review
PDU       Power Distribution Unit
PEM       Plastic Encapsulated Module
PEM       Pre-Electronics Module
PER       Pre-Environmental Review
PFR       Problem/Failure Report
PGA       Programmable Gate Array
PHA       Pulse Height Analysis
PI        Principle Investigator
PID       Proportional Integral Derivative
PIL       Parts Identification List
PIN       Positive-Intrinsic-Negative, a type of semiconductor
PLANNED   BCWS
PMB       Performance Measurement Baseline
PMCS      Project Management Control System
PMT       Photo-Multiplier Tube
PMT       Performance Measurement Technique
PNMT      Photo-Multiplier Tube
PNMT      Photo Multiplier Tube
PPCP      Parts Program Control Plan
PPL       Preferred Parts List
PRA       Probabalistic Risk Analysis
PROM      Programmable Read Only Memory
PS        Power Supply
PSAM      Performance and Safety Assurance Manager
PSC       Power Switching Card
PSF       Point Spread Function
PSR       Pulsar
PSR       Pre-Shipment Review
PVM       Performance Verification Matrix
PWB       Printed Writing Board

QA        Quality Assurance
QC        Quality Control
QE        Quality Engineering
QU        Qualification Unit

R&D       Research and Development
R&QA      Reliability & Quality Assurance
R.L.      Radiation Length
R2        Revision 2
RDB       Relational Data Base
RFI       Request for Information
RFP       Request for Proposal
RHA       Resolved Hit Address
RI        Required Instrument
RIKEN     Japanese Institute of Physical and Chemical Research
RMS       Root Mean Square
RSDO      Rapid Spacecraft Development Office
RT        Remote Terminal
RTE       Real Time Engine
RTOS      Real Time Operating System
RXTE      Rossi X-Ray Timing Explorer

S&MA      Safety and Mission Assurance
SAA       South Atlantic Anomaly
SAC       Science Advisory Committee
SAGENAP   Scientific Assesment Group for Experiments on Non-Accelerator Physics
SAM       Safety Assurance Manager
SAP       Service d'Astrophysique
SAS       Science Analysis Software
SBC       Single Board Computer
SBIR      Small Business Innovation Research
SC        Spacecraft
SciFi     Scintillating Fiber
SCIPP     Santa Cruz Institute of Particle Physics at UCSC
SCL       Spacecraft Command Language
SCS       SLAC Computing Services
SDB       Small Disadvantaged Business
SDP       Science Data Processing
SE        System Engineering
SED       Service d'Etude des Detecteurs
SEE       Single Event Effects
SEI       Service d'Electronique & Informatique
SEL       Single Event Latch-up
SEP       Solar Energetic Particles
SEU       Single Event Upsept
SEU       Structure and Evolution of the Universe "NASA Program Theme"
SGC       Swedish GLAST Collaboration
SGL       Space/Ground Link
Si        Silicon
SI        Science Instrument
SIG       Signal Distribution
SINDA     Systems Improved Numerical Differencing Analyzer
SIS       Solar Isotope Spectrometer
SI-SC     Science Instrument-Spacecraft
SIU       Spacecraft Interface Unit
SLAC      Stanford Linear Accelerator Center
SLD       SLAC Large Detector
SMB       Software Messaging Bus
SMT       Surface Mount Technology
SN        Space Network
SNOB      Super Novae OB Star Association
SNR       Super Nova Remnant
SNR       Signal/Noise Ratio
SOC       Science Operations Center
SOHO      Solar and Heliospheric Observatory
SOI       Silicon On Insulator
SOW       Statement of Work
SPAR      Single Photon Angular Resolution
SPEC      Specification
SPI       Schedule Performance Index
SQA       Software Quality Assurance
SR        Steradian
SR&T      Sustaining Research & Technology
SRAM      Static Random Access Memory
SRD       Science Requirements Document
SRO       Systems Review Office
SRR       Site Recommendaiton Report
SRR       System Requirements Review
S-S       Subsystem
SSAC      Senior Scientist Advisory Committee
SSC       Synchrotron Self Compton
SSC       Science Support Center
SSD       Silicon Strip Detector
SSE       Space Science Enterprise
SSPP      System Safety Program Plan
SSR       Solid State Recorder
SSU       California State University at Sonoma
STD       Standard
STM       STMicroelectronics, (Italy)
STP       Space Test Program
SU        Stanford University
SU-HEPL   Stanford University Hanson Experimental Physics Laboratory
SUSIM     Solar Ultraviolet Spectral Irradiance Monitor
SU-SLAC   Stanford University-Stanford Linear Accelerator Center
SV        Space Vehicle
SVAC      Science Verification, Analysis and Calibration
SW        Software
SWG       Science Working Group

T&DF      Trigger and Dataflow
T&M       Test & Measuring
TACK      Trigger Acknowledge
TAMUK     Texas A&M Univeristy in Kingsville
TB        Test Board
TBD       To Be Determined
TBR       To Be Resolved
TCPU      Tower CPU
TCS       Thermal Control Subsystem
TDA       Tile Detector Assembly
TDRP      Technical Design Review Program
TDRSS     Tracking and Data Relay Satellite System
TDSP      TEM Digital Signal Processor
TECH      Technical
TDT       Tile Detection Test
TEM       Tower Electronics Module
THA       Tower Hit Address
TID       Total Ionizing Dose
TKR       The LAT Tracker Subsystem
TMCM      TKR Multi-Chip Module
TMM       Thermal-Mechanical Model
TOO       Target of Opportunity
TOT       Time Over Threshold
TPG       Thermal Pyrolytic Graphite
TPM       Technical Performance Measure
TQFP      Thin Quad Flat Package
TRC       Tower Readout Cable
TRG       Trigger
TRL       Technology Readiness Level
TSA       Tile Shell Assembly
TSS       Thermal Synthesizer System
TU        Test Unit
TV        Thermal Vacuum

UAH       University of Alabama at Huntsville
UARS      Upper Atmospheric Research Satellite
UCSC      University of California at Santa Cruz
UnID      Unidentified Sources
UTC       Universal Time Coordinated
UW        University of Washington
V&V     Verification and Validation
VAC     Vacuum
VCDU    Virtual Channel Data Unit
VCHP    Variable-Conductance Heat Pipe
VDG     Van Der Graff
VLPC    Visible Light Photon Counter
VLSI    Very Large Scale Integration
VM2     Verification Model 2
VME     Versa Module Eurocard
VR      Validation Reviews
VVC     Virtual Visitor Center

W       Watts
WAN     Wide Area Network
WBS     Work Breakdown Structure
WIMP    Weakly Interacting Massive Elementary Particle
WOA     Work Order Authorization
WP      Work Package
WSB     Wave Shifting Bars
WSF     Wave Shifting Fibers
WUStL   Washington University, St. Louis

X0      Radiation Length
XGT     External Gamma-Ray Target
X-LAT   Cross LAT