- F Wastes
- A federal waste category comprised of wastes from
- Fire Alarm.
- Federal Aviation Administration.
- Facilities Office. Merged with Plant Engineering in 2000 and
re- named Site Engineering and Maintenance (SEM).
- Federal Administrative Charge.
- Facility for Advanced Accelerator Experimental Tests. (SLAC)
- Fire Alarm Control Panel.
- see Fax.
- Foreign Access Central Tracking System. (DOE)
- Flash Analog-to-Digital Converter.
- Facility for Antiproton and Ion Research.(Germany)
- Funding Agencies for Large Colliders.
- Fire ALarM.
- Facilities Asset Management Information System. A Computer
Maintenance Management System (CMMS) used by SLAC ETS.
- Facilities Action Notice.
- 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.
- 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.
- Faculty and Student Teams.
- Five-hundred meter Aperture Spherical Telescope. (China)
- 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.
- (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
- Freon bubble chamber.
- Forward-Backward Lepton Jet Analyzer.
- Field Budget Request.
- A microprocessor dedicated to the steering feedback through
the collimators at the end of the LINAC.
- A microprocessor dedicated to the Fast Energy Feedback at
the end of the LINAC.
- A Microprocessor controlling IP devices.
- Forward liquid argon CALorimeter of the ATLAS detector.
- Federal Communications Commission. Federal commission that
sets policy and regulates the U.S. communications industry under
the authority of the Communications Act of 1934.
- Field Construction Manager.
- Flavor Changing Neutral Currents
- Future Computing at SLAC.
- Federal Council for Science and Technology.
- Fire Department (under contract from the City of Palo Alto).
- Flourescence Detector (Auger Observatory).
- Fire Damper.
- Free Differential Algebra
- 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.
- Focused Detection of Internally Reflected Cherenkov light.
- FeeD THRoUgh.
- Financial Data Warehouse.
- Finite Elements Analysis. (BaBar)
- Federal Communications Commission.
- See FCC.
- Federal Telecommunications System
- See FTS.
- Front-End Enclosure (LCLS).
- An automated program for ab initio multiple
scattering calculation s of XAFS an XANES spectra for cluster of
atoms. (University of Washington).
- Far Experimental Hall. (LCLS)
- Firing Error Indicator.
- Final Environmental Impact Statement.
- Free-Electron Laser
- Federal Emergency Management Agency.
- Federal Energy Management Program.
- Federal Energy Management Program.
- 10-39 square centimeters (10-15 of a barn).
- One quadrillionth of a second.
- Federal Energy Office.
- Facility Emergency Plan.
- Free Electron Radiation and Matching Instrumentation
- 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.
- See FNAL
- 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
- Package providing the software that controls the Front End
Simulator hardware on the LAT Testbed.
Glast Category: FSW, package
- Fugitive Emissions Working Group.
- Final Focus.
- Finding Foil.
- Federal Facility Agreement.
- Fixed-Field Alternating Gradient accelerators.
- Fast FeedBacK.
- Fast Fourier Transform
- Final Focus Test Beam. (SLAC)
- Fine Guidance Sensor. (JWST)
- Fermi Gamma-ray Space Telescope. (Formerly called GLAST)
- Factory Insurance Association.
- 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.
- 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.
- See FRP.
- Federal Insurance Contributions Act.
- Free Interface Diffusion.
- 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.
- 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.
- 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
- First In First Out. A computer jargon term referring to the
order data is transferred, as in a queue.
- 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.
- A standard protocol specified in RFC 742 which lists who is
currently logged in on another host.
- Experiment conducted at the Frascati National Laboratories
(Italy) phi-meson factory DAFNE
- Federal Information Processing Standards.
- Finite Impulse Response
- 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.
- Faint Images of the Radio Sky at Twenty centimeters.
- Fiscal Year
- See FY.
- Federal Information Security Management Act of 2002.
- Fit to previously existing data.
- Flexible Image Transport System. Originally an astronomical
image file format, now also used for tabular data.
- 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
- A process whereby waste is made unchangeable and/or
- France-Japan Particle Physics international associated
- France-Japan Particle Physics Laboratory.
- 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
- Fluorescence in Air from SHowers. (SLAC-E-165)
- 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.
- FLoor CleanOut.
- Beam Loading Feedbacks for the SLC damping rings, designed
by Flemming Petersen.
- 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
- A phase shifter used to delay an RF phase by 180 degrees as
for the FIDO norm beam subharmonic buncher phase.
- 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
- FLoaT SWitch.
- 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.
- A multiparticle transport computer code, developed at INFN
and CER N.
- Fisher Matrix Analysis.
- Facilities Management Designee.
- Failure Mode, Effects, Criticality Analysis.
- Fire Marshal's Office.
- Fermilab MultiParticle Spectrometer.
- 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
Glast Category: FSW, package
- Fermi National Accelerator Laboratory (Batavia, IL). Also
known as FERMILAB.
- center for the advancement of Frontiers in Optical Coherent
Ultraf ast Science. (NSF)
- Focus Drift Defocus Drift
- See 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.
- 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
- Friends of the Linear Accelerator (SLAC).
- 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
- Finding of No Significant Impact (as the result of an
environmental impact report)
- The shape and area of floor space required for a piece of
- Fixed Order Perturbation Theory
- Form R
- Toxic Release Inventory.
- 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.
- |Group of software developers at SLAC who wrote and support
the CHS and related ground support software tools.|
Glast Category: organization, software
- |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.
- 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
Glast Category: general
- |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.
- Final Procurement and Construction Design.
- Federal Project Director.
- Field Programmable Gate Array.
- see JCC FPM
- Fall Protection Plan.
- Fast Pulse Pickup.
- Seventh Framework Programme (European Union).
- 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:
- Fractional Quantum Hall effect
- Fractional Quantum Hall Effect.
- Foundational Questions in Physics and Cosmology.
- Federal Register.
- Federal Railroad Administration.
- ADONE beta anti beta group detector.
- FRACtional energy gain from the model. A magnet database
- 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.
- ADONE gamma gamma group detector.
- ADONE MEA group detector.
- Federal Rules of Civil Procedure.
- A SLC operation nickname for a PPS procedure allowing access
into the SLC Arcs while the beam is still in the BSY.
- FOX Ruby Event Display. Graphics client used for event
- 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
Glast Category: software, SAS
- FREJUS Collaboration - modular flash chamber detector
- Federal Republic of Germany.
- Facility for Rare Isotope Beams. (Michigan State)
- Front Response
- Response as measured in the thin layers of the Tracker.
Glast Category: hardware
- Fiber-Reinforced Plastic (fiberglass).
- See Flow Switch.
- Failure Safety Analysis Document.
- Final Safety Analysis Report.
- Final State Interaction.
- Final State Radiation.
- Flat-Spectrum Radio Quasar.
- Former Soviet Union.
- Former Solvent Underground Storage Tank.
- Fractional SUperSYmmetry
- Provides all control, data collection, housekeeping, and
diagnostic functionality on the LAT.
Glast Category: FSW, software
- Final Telescope.
- File Transfer Access Method, ISO standard ISO 8571.
- Full Time Equivalent.
- Finite Temperature Field Theory.
- Fourier Transform InfraRed
- Foreign Travel Management System.
- NASA-sponsored software used to examine and manipulate the
contents of FITS (image and tabular data) files.
- |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
- File Transfer Protocol. The Internet standard protocol for
transferring text and binary files from one computer to another.
- Fast Time Plot. A klystron diagnostic software package that
uses a variable sample gate to generate plots of klystron
parameters vs. time.
- Field Task Proposal.
- Forward Time Projection Chamber
- Federal domestic TRavel per diem.
- 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
- 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.
- Smoke-like particles of metals suspended in air.
- Far Ultraviolet Spectroscopic Explorer.
- Formerly Utilized Sites Remedial Action Program (DOE).
- Fast acting vacuum Valve. Remotely operated accelerator
- Full Width at Half Maximum. (Beam focus measure)
- Field Work Proposal.
- Federal Water Pollution Control Act (amended by CWA).
- 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
- ForschungsZentrum Jülich. (German research center)
- ForschungZentrum Karlsruhe. (a German science and
engineering research institution)
- ForschungZentrum Rossendorf, a research institute in
- FNAL E-731 Spectrometer-Calorimeter.
Send corrections to firstname.lastname@example.org
or propose new terms for SLACspeak.