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SLACspeak Terms

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F
Focusing
F Wastes
A federal waste category comprised of wastes from nonspecific sources.
F&O
Facilities and Operations. (SLAC)
FA
Fire Alarm.
FAA
Federal Aviation Administration.
FAC
Facilities Office. Merged with Plant Engineering in 2000 and re- named Site Engineering and Maintenance (SEM).
FAC
Federal Administrative Charge.
FACET
Facility for Advanced Accelerator Experimental Tests. (SLAC)
FACP
Fire Alarm Control Panel.
Facsimile
see Fax.
FACTS
Foreign Access Central Tracking System. (DOE)
FADC
Flash Analog-to-Digital Converter.
FAIR
Facility for Antiproton and Ion Research.(Germany)
FALC
Funding Agencies for Large Colliders.
FALM
Fire ALarM.
FAMIS
Facilities Asset Management Information System. A Computer Maintenance Management System (CMMS) used by SLAC ETS.
FAN
Facilities Action Notice.
FAQ
Frequently Asked Question. Pronounced as separate letters or as "fak," a FAQ is a document that answers questions about some technical topic. Frequently, FAQ's are available electronically, and are formatted as help files or hypertext documents.
Faraday Cup
See FARC.
FARC
FARaday Cup. A device designed to stop an accelerated beam and measure the integrated charge. Some are also used to park beams at low rep rates for short periods. FARCs are usually connected to ground through a current measuring device so that the integrated current in the beam may be measured.
FaST
Faculty and Student Teams.
FAST
Five-hundred meter Aperture Spherical Telescope. (China)
FaST
Faculty and Student Teacher program (DOE)
Fast Fault Finder
Electronic safety interlock system that dianoses klystron or Marx modulator malfunctions.
Fast Time Plot
See FTP.
Fault Lock Out
See FLK.
Fault Tolerance
The ability of hardware to tolerate the breakdown of any major components, such as CPUs, hard drives and power supplies. Fault tolerance is typically provided by supplying two or more of the same component, with the additional hardware serving on a standby basis. True fault tolerance provides standby hardware that instantaneously takes over for malfunctioning hardware elements in a completely transparent manner with, ideally, absolutely no loss of data and no processing downtime.
Fax
(verb) To send a document via a facsimile machine, which is a device that can send or receive pictures and text over a telephone line. (noun) A document sent or received via a fax machine.
FB
FeedBack.
FBC
Freon bubble chamber.
FBLJA
Forward-Backward Lepton Jet Analyzer.
FBR
Field Budget Request.
FB29
A microprocessor dedicated to the steering feedback through the collimators at the end of the LINAC.
FB31
A microprocessor dedicated to the Fast Energy Feedback at the end of the LINAC.
FB69
A Microprocessor controlling IP devices.
FCAL
Forward liquid argon CALorimeter of the ATLAS detector. (CERN)
FCC
Federal Communications Commission. Federal commission that sets policy and regulates the U.S. communications industry under the authority of the Communications Act of 1934.
FCM
Field Construction Manager.
FCNC
Flavor Changing Neutral Currents
FCS
Future Computing at SLAC.
FCST
Federal Council for Science and Technology.
FD
Fire Department (under contract from the City of Palo Alto).
FD
Flourescence Detector (Auger Observatory).
FD
Fire Damper.
FDA
Free Differential Algebra
FDDI
Fiber Distributed Data Interface. A set of ANSI protocols for sending digital data over fiber-optic cable. FDDI networks are token-passing networks, and support data rates of up to 100 Mbps (100 million bits) per second. FDDI networks are typically used as backbones for wide-area networks.
FDIRC
Focused Detection of Internally Reflected Cherenkov light.
FDTHRU
FeeD THRoUgh.
FDW
Financial Data Warehouse.
FEA
Finite Elements Analysis. (BaBar)
Federal Communications Commission.
See FCC.
Federal Telecommunications System
See FTS.
FEE
Front-End Enclosure (LCLS).
FEFF
An automated program for ab initio multiple scattering calculation s of XAFS an XANES spectra for cluster of atoms. (University of Washington).
FEH
Far Experimental Hall. (LCLS)
FEI
Firing Error Indicator.
FEIS
Final Environmental Impact Statement.
FEL
Free-Electron Laser
FEMA
Federal Emergency Management Agency.
FEMP
Federal Energy Management Program.
FEMPF
Federal Energy Management Program.
Femtobarn
10-39 square centimeters (10-15 of a barn).
Femtosecond
One quadrillionth of a second.
FEO
Federal Energy Office.
FEP
Facility Emergency Plan.
FERMI
Free Electron Radiation and Matching Instrumentation
FERMI
FERMI gamma-ray space telescope.
Fermi solution
A method for generating approximate solutions quickly. Named after Enrico Fermi, who had considerable ability in this area. The method requires that one know a close approximation to the range into which the computational results should fall.
FERMILAB
See FNAL
FES
System of electronics boards and PCs in the LAT Testbed used to prove that data can properly flow from the LAT's front-end cables to the LAT CPUs, and to measure throughput of the instrument's Trigger and Dataflow system as a whole.
  Glast Category: hardware
FES
Package providing the software that controls the Front End Simulator hardware on the LAT Testbed.
  Glast Category: FSW, package
FEWG
Fugitive Emissions Working Group.
FF
Final Focus.
FF
Finding Foil.
FFA
Federal Facility Agreement.
FFAG
Fixed-Field Alternating Gradient accelerators.
FFBK
Fast FeedBacK.
FFD
Fitness For Duty.
FFT
Fast Fourier Transform
FFTB
Final Focus Test Beam. (SLAC)
FFZ
Fairlie-Fletcher-Zachos
FGS
Fine Guidance Sensor. (JWST)
FGST
Fermi Gamma-ray Space Telescope. (Formerly called GLAST)
FIA
Factory Insurance Association.
FIAT
PHasing, Isolation, Attenuation, and Trigger. (The F is phonetic.) Double-width racks that stand at every klystron/modulator station and hold electronic chassis that relate to the klystron/modulator functionality and protection.
FIB
Focused Ion Beam.
Fiber Distributed Data Interface
See FDDI.
Fiber Optics
A data transmission medium made of tiny threads of glass or plastic that transmit huge amounts of data at the speed of light. The light is normally generated by a light emitting diode (LED) or a laser.
Fiberglass
See FRP.
FICA
Federal Insurance Contributions Act.
FID
Free Interface Diffusion.
FID
FIDucial.
FIDO
FIDucial Output. a chassis which is used as a local timing reference. The FIDO extracts the fiducial pulse from the 476 MHz MDL. The output of the FIDO is a 119 MHz signal with a missing half cycle to indicate T-zero which is fed to a PDU.
Fiducial
A pulse created every 2.8 milliseconds, doubled in amplitude, and used as a marker for timing. This double amplitude signal is superimposed on the 476 MHz as it is synchronized to the zero crossings of the 3 phase PG&E signal and to the damping ring revolution frequency. The fiducial is processed by the FIDO and goes to the PDU.
Fiducial Output
See FIDO.
Fieldbus
A local area network technology used for the control of sensors and actuators in industrial applications such as data acquisition and control. Normally a Fieldbus network uses transmission media such as twisted-pairs cables. The Fieldbus communication protocol is designed to exchange short command messages among devices such as actuators, sensors, controllers, general-purpose computers and other industrial devices connected on a network. Several proprietary Fieldbus protocols exist, including Foundation Fieldbus, CANbus , BITBUS, WorldFIP, and Profibus.
FIFO
First In First Out. A computer jargon term referring to the order data is transferred, as in a queue.
FIFRA
Federal Insecticide, Fungicide and Rodenticide Act. (7 U.S.C. Sec. 136 et seq)
File Transfer Protocol
See FTP.
Final Focus Test Beam
See FFTB.
Final Triplet
The last three quadrupole magnets in the beam line optics of the Final Focus just before the IP.
Finger
A standard protocol specified in RFC 742 which lists who is currently logged in on another host.
FINUDA
Experiment conducted at the Frascati National Laboratories (Italy) phi-meson factory DAFNE
FIPS
Federal Information Processing Standards.
FIR
Finite Impulse Response
FIRAS
Far-Infrared Absolute Spectrophotometer
Fire P
Fire Point. The lowest temperature at which a mixture of air and vapor continues to burn in an open container when ignited. It is usually above the flash point.
Fire Point
See Fire P.
FIRST
Faint Images of the Radio Sky at Twenty centimeters.
Fiscal Year
See FY.
FISMA
Federal Information Security Management Act of 2002.
FIT
Fit to previously existing data.
FITS
Flexible Image Transport System. Originally an astronomical image file format, now also used for tabular data.
FITS
The FITS standard image file format has been expanded to provide standards for many different types of files used in astronomy. (See FITS Files.)
  Glast Category: software
  URL: http://glast-ground.slac.stanford.edu/workbook/pages/DC2/fitsFiles.htm
Fixation
A process whereby waste is made unchangeable and/or stationary.
FJ-PPL
France-Japan Particle Physics international associated Laboratory.
FJPPL
France-Japan Particle Physics Laboratory.
FLAMINGOS
FLoridA Multi-object Imaging Near-infrared Grism Observational Spe ctrometer.
Flammability Range
For a given substance, that range of percentages from the LEL to the UEL, any of which will ignite if provided an ignition source.
FLASH
Fluorescence in Air from SHowers. (SLAC-E-165)
FLASH
Free-electron LASer in Hamburg. (DESY)
Flash P
Flash Point. The lowest temperature at which a liquid will give off enough flammable vapors at or near its surface such that in an intimate mixture with air and a spark or flame, it ignites.
Flash Point
See Flash P.
FLCO
FLoor CleanOut.
Flemming
Beam Loading Feedbacks for the SLC damping rings, designed by Flemming Petersen.
FLIC
Fat Link Irrelevant Clover.
Flip Coil
A device for measuring the strength of a magnetic field. It consists of a coil which rotates through the B field of the magnet, inducing a current in the coil which is proportional to the field and the rotational velocity of the coil. The field strength thus measured may be correlated to a specific beam energy.
Flipper
A phase shifter used to delay an RF phase by 180 degrees as for the FIDO norm beam subharmonic buncher phase.
FLK
Fault Lock Out. A klystron summary display message indicating a modulator fault lockout.
Flow Switch
An interlocked device protecting beam line elements, such as magnets, from a cooling system failure
FLRW
Friedmann-Lemaitre-Robertson-Walker
FLTSW
FLoaT SWitch.
FLUENCE
FLuid-ENhanced Crystal Engineering.
Fluidized-Bed Incineration
A process whereby wastes are injected into agitated beds of inert granular material and burned. This method is suitable for sludges and liquid waste: solid wastes may need grinding.
FLUKA
A multiparticle transport computer code, developed at INFN and CER N.
FMA
Fisher Matrix Analysis.
FMD
Facilities Management Designee.
FMECA
Failure Mode, Effects, Criticality Analysis.
FMO
Fire Marshal's Office.
FMPS
Fermilab MultiParticle Spectrometer.
FMX
System employing a relational database and supporting software to track software files installed on embedded CPU file systems, both on the LAT and in test environments (e.g., the LAT Testbed).
  Glast Category: FSW, package
FNAL
Fermi National Accelerator Laboratory (Batavia, IL). Also known as FERMILAB.
FOCUS
center for the advancement of Frontiers in Optical Coherent Ultraf ast Science. (NSF)
Focus Drift Defocus Drift
See FODO.
FODO
FOcus drift DefOcus drift. A beam transport line optional lattice composed of a focusing quadrupole and a defocusing quadrupole separated by equal drift sections.
Foils
Refers to the energy spectrum monitors used in the ETA and the WTA. Composed of six bpms strips (there are actually no foils). Also refers to strips on the BSY TUD for measuring energy spectrum.
FOLA
Friends of the Linear Accelerator (SLAC).
Folio
The online information resource of the Stanford University libraries. It includes the online catalog, INSPEC, MEDLINE, and other databases. Contact the SLAC Library (x2411) for access and use instructions.
FONSI
Finding of No Significant Impact (as the result of an environmental impact report)
Footprint
The shape and area of floor space required for a piece of equipment.
FOPT
Fixed Order Perturbation Theory
Form R
Toxic Release Inventory.
FORTRAN
FORmula TRANslator. The oldest high-level programming language, designed by John Backus for IBM in the late 1950's.
Forward Phasing
1. To adjust the RF phase of a particle beam to add energy to the particle bunch. 2. To compensate for wakefields by keeping E Tail greater than E Head.
FOS
|Group of software developers at SLAC who wrote and support the CHS and related ground support software tools.|
  Glast Category: organization, software
FOT
|Staff who operate the GLAST Observatory at the MOC.|
  Glast Category: operations
Four By Six
The section of the PRL near Sector 19. It includes four bends of six degrees each.
FOV
Field-Of-View.
FOV
Integral of effective area over solid angle divided by peak effective area. The specified LAT FOV is >2 steradian, enabling it to scan the full celestial sphere repetitively every 2 orbits excluding the region affected by the South Atlantic Anomaly (SAA).
  Glast Category: general
FOV
|Size of the region of sky from which a detector accumulates data. The FOV has two definitions. One is the integral of the effective area over the sky divided by the on-axis effective area. The second is the total area of the sk| |y over which useful data can be accumulated, even if the effective area is much less than the maximum.|
  Glast Category: astronomy
Fox Phase Shifter
The RF phase shifter directly above each LINAC klystron. Designed by A. Gardner Fox, after whom the device is named.
FPCD
Final Procurement and Construction Design.
FPD
Federal Project Director.
FPGA
Field Programmable Gate Array.
FPM
see JCC FPM
FPP
Fall Protection Plan.
FPP
Fast Pulse Pickup.
FP7
Seventh Framework Programme (European Union).
FQDN
Fully Qualified Domain Name. The FQDN is the full site name of a system, rather than just its hostname. For example, the system, lisa, at Widener University has a FQDN of: lisa.cs.widener.edu.
FQH
Fractional Quantum Hall effect
FQHE
Fractional Quantum Hall Effect.
FQXi
Foundational Questions in Physics and Cosmology.
FR
Federal Register.
FRA
Federal Railroad Administration.
FRAB
ADONE beta anti beta group detector.
FRAC
FRACtional energy gain from the model. A magnet database secondary.
Fractional Energy Gain from the Model
See FRAC.
Fractional T1
A communication line consisting of some fraction of a standard T1 line. Fractions are allocated in multiples of 64 Kbps. A T1 line can support up to 24 64-Kbps channels.
FRAG
ADONE gamma gamma group detector.
FRAM
ADONE MEA group detector.
FRCP
Federal Rules of Civil Procedure.
Fred
A SLC operation nickname for a PPS procedure allowing access into the SLC Arcs while the beam is still in the BSY.
FRED
FOX Ruby Event Display. Graphics client used for event display (GLAST).
FRED
An event viewer based on the HepRep protocol and using Ruby as its scripting language, FRED functions as a graphics client in a client-server relationship with the GLAST Science Analysis Software.
  Glast Category: software, SAS
FREJ
FREJUS Collaboration - modular flash chamber detector (calorimeter).
FRG
Federal Republic of Germany.
FRIB
Facility for Rare Isotope Beams. (Michigan State)
FRMG
FoRMinG.
Front Response
Response as measured in the thin layers of the Tracker.
  Glast Category: hardware
FRP
Fiber-Reinforced Plastic (fiberglass).
FRW
Friedmann-Robertson-Walker
FS
See Flow Switch.
FS
Femto-Second.
FSAD
Failure Safety Analysis Document.
FSAR
Final Safety Analysis Report.
FSCM
Finance and Supply Chain Management. (SLAC)
FSHC
Faculty Staff Health Center (Stanford).
FSI
Final State Interaction.
FSR
Final State Radiation.
FSRQ
Flat-Spectrum Radio Quasar.
FSU
Former Soviet Union.
FSUST
Former Solvent Underground Storage Tank.
FSUSY
Fractional SUperSYmmetry
FSW
Provides all control, data collection, housekeeping, and diagnostic functionality on the LAT.
  Glast Category: FSW, software
FT
Final Telescope.
FTAM
File Transfer Access Method, ISO standard ISO 8571.
FTDT
Finite-Difference Time-Domain.
FTE
Full Time Equivalent.
FTFT
Finite Temperature Field Theory.
FTIR
Fourier Transform InfraRed
FTMS
Foreign Travel Management System.
FTOOLS
NASA-sponsored software used to examine and manipulate the contents of FITS (image and tabular data) files.
FTOOLS
|A collection of utility programs used to create, examine, or modify the contents of FITS data files. Each FTOOLS task is a separate program that performs a single simple operation. However, scripts are available for combining s| |everal FTOOLS to perform complex tasks. The FTOOLS are primarily a Unix based package, but a Windows version is being developed. For more detailed information, see the FTOOLS section of NASA's HEASARC Software website.|
  Glast Category: SAS
  URL: http://heasarc.gsfc.nasa.gov/docs/software/ftools/ftools_menu.html
FTP
File Transfer Protocol. The Internet standard protocol for transferring text and binary files from one computer to another.
FTP
Fast Time Plot. A klystron diagnostic software package that uses a variable sample gate to generate plots of klystron parameters vs. time.
FTP
Field Task Proposal.
FTPC
Forward Time Projection Chamber
FTR
Federal domestic TRavel per diem.
FTS
Federal Telecommunications System. A US Government network of leas ed long-distance lines, managed and operated by the General Servic es Administration to provide long-distance service at a lower cost than commercial service. (defunct)
Fudge Factor
Used by LEM to scale EACT to the desired energy. Makes EACT equal to EMOD at the end of the LINAC. The fudge factor distributes energy errors of unknown source evenly through the LINAC.
Fudge Factor
Any factor added to or multiplied by a theoretically derived equation to make it more closely match the real world. Fudge factors compensate for second and third order effects that are often too cumbersome to include in the theory, or for indeterminant misalignments in the hardware.
Full Duplex
Data transmission in both directions at the same time. See also Half Duplex.
Fully Qualified Domain Name
See FQDN.
Fumes
Smoke-like particles of metals suspended in air.
FUSE
Far Ultraviolet Spectroscopic Explorer.
FUSRAP
Formerly Utilized Sites Remedial Action Program (DOE).
FV
Fast acting vacuum Valve. Remotely operated accelerator valve.
FWHM
Full Width at Half Maximum. (Beam focus measure)
FWP
Field Work Proposal.
FWPCA
Federal Water Pollution Control Act (amended by CWA).
FY
Fiscal Year. SLAC operates on the Federal Fiscal Year which starts 1 October and ends 30 September. Fiscal years are named for the year in which they end. ex. FY99 = 1 Oct 1998 thru 30 Sep 1999.
FZJ
ForschungsZentrum Jülich. (German research center)
FZK
ForschungZentrum Karlsruhe. (a German science and engineering research institution)
FZR
ForschungZentrum Rossendorf, a research institute in Germany.
F731
FNAL E-731 Spectrometer-Calorimeter.

Send corrections to jmdeken@slac.stanford.edu or propose new terms for SLACspeak.

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