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SLACspeak Terms

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W
Watt.
WA
Work Authorization.
WAA
Waste Accumulation Area.
WAC
Waste Acceptance Criteria.
WAH
Word-Aligned Hybrid, a type of compression method.
Wakefield
The field created by a bunch of charged particles as it passes through a beam pipe. The charges induced in the wall of a beam pipe by the leading edge of the bunch have an effect (usually bad) on the tail of the bunch. If the beam is centered, wakefields will cancel each other by symmetry, but if the beam is closer to one wall, the tail will be attracted to this wall resulting in a `banana' shaped bunch (Transverse Wakefield). A wakefield also can be created in RF cavities by the loading effect: the tail gets less energy than the head of the bunch (Longitudinal Wakefield). The deceleration on parts of the bunch caused by wakefields can be up to 2 GeV.
WALTA
Washington Large-scale Time-coincidence Array.
WAMC
Wrap-Around Mode Converter.
WAN
Wide Area Networking.
WAPA
Western Area Power Administration.
Warm Ion Calorimeter
See WIC.
Warning Property
A sign, such as odor, taste, or irritation, that a respirator is beginning to lose its effectiveness.
WaRP
WIMP Argonne Programme.
WASM
A simple standalone x86 assembler, originally shipped with Version 10.0 of Watcom C/C++.
Water Table
The surface of an unconfined aquifer at which the pressure is atmospheric. It is the level at which water stands in wells that penetrate the uppermost part of an aquifer.
WB
WeBer
WBS
Work Breakdown Structure.
WCLG
Water CooLinG
WD
White Dwarf.
WDC
Washington, DC
WDR
Waste Discharge Requirements. (issued by RWQCB)
WDVV
Witten-Dijkgraaf-Verlinde-Verlinde
Web Page
An HTML file viewable on the World Wide Web. Associated with the page itself, there may be other kinds of Web files like Postscript , PDF, image, movie, and sound files.
Web Server
A computer that delivers (serves up) Web pages. Every Web server has an IP address and possibly a domain name. For example, if you enter the URL http://www.slac.stanford.edu/detailed.html in your browser, this sends a request to the server whose domain name is slac.stanford.edu. The server then fetches the page named detailed.html and sends it to your browser.
WEFTEC
Water Environment Federation's annual Technical Exhibition and Con ference.
West Turn Around
See WTA.
WET
Waste Extraction Test. (CCR Title 22)
WET
Whole-Earth Telescope.
WFIRST
Wide-Field Infrared Survey Telescope.
WFO
Wave Function Origin
WFO
Work For Others.
WFPC2
Wide Field and Planetary Camera 2
WG
Working Group.
WGV
A klystron SDS message indicating that there is waveguide vacuum fault.
WG1
A klystron summary display message indicating that there is a problem with the waveguide water cooling system (flow switch #1).
WHDL
Watt-Hour Demand Limiter
WHIM
Warm-Hot Intergalactic Medium.
WIC
Warm Iron Calorimeter. A part of the SLD detector.
Wiggler
A type of bend magnet designed for the purpose of creating synchrotron radiation by `wiggling' the beam rapidly to and fro. See Undulator.
WIMP
Weakly Interacting Massive Particle.
WIP
Work Integration Plan. Used to document the coordination of red w ork. (SLAC ES&H)
WIPP
Waste Isolation Pilot Plant (Carlsbad, NM).
WIRE
Wire chamber.
WIRE
Wide-field InfraRed Explorer.
Wire Scanner
Wire scanners are beam profile monitors used to provide accurate measurements of beam size and position in all three planes (vertical, horizontal and longitudinal) for beam feedback systems and beam optimization procedures. Components include wires capable of being moved precisely through the path of a beam, and a detector which can accurately measure the amount of charge striking a wire. When in use, a wire is scanned across the path of a beam, and a plot of wire position versus beam intensity is generated that represents the beam profile. Wire scanners are used to measure the emittance of the beam.
WIRED
World-wide-web Interactive Remote Event Display. A general purpose particle physics event display program developed by Mark Donszelmann of CERN.
Wirefix
A System for making harmonic corrections in the SLC arcs.
WIS
Women's Interchange at SLAC.
WISE
Wide-field Infrared Survey Explorer. (NASA)
WISP
Weakly Interacting Suv-eV Particle.
WISRD
Wire Imaging Synchrotron Radiation Detector. Part of the system that measured beam energies at the SLC.
WKB
Wentzel-Kramers-Brillouin (a method of calculating wave functions)
WKL
A klystron summary display message indicating that there is a problem with the klystron water system.
WL
Working Level. A unit of measure for documenting exposure to radon decay products. One working level is equal to approximately 200 picocuries per liter.
WLCG
Worldwide Lhc Computing Grid.
WLD
Water LoaD
WLDMT
WeLDMenT
WLM
Working Level Month. A unit of measure used to determine cumulative exposure to radon.
WM
Waste Management / Minimization. (ES&H)
WMAC
Wrap-around Mode Converter
WMAP
Wilkinson Microwave Anisotropy Probe.
WONDER
Workshop On Next Dark-matter Experimental Research.
Working Level
See WL.
Working Level Month
See WLM.
Workstation
A networked computer which typically has more power than a PC or Macintosh, but less power than a minicomputer.
WORM
Write Once, Read Many.
Worm
A computer program which replicates itself. The Internet Worm was perhaps the most famous. It successfully (and accidentally) duplicated itself on systems across the Internet.
WP
Work Package.
WPAC
Work Planning And Control.
WPC
Work Planning and Control (Also shown as WP&C)
WSBK
W-Band Sheet Beam Klystron.
WSC
Web Support Coordinator
WSC
Located near Las Cruces, NM, the WSC includes two functionally identical satellite ground terminals (White Sands Ground Terminal and the Second TDRSS Ground Terminal).
  Glast Category: operations
  URL: http://msp.gsfc.nasa.gov/tdrss/wsc.html
WSF
A klystron summary display message indicating that the water summary has a fault.
WSP
Work-Study Program.
WSR
Watt per SteRadian
WSRF
Web Service Resource Framework from OASIS.
WSRF
Web Service Resource Framework from OASIS.
WSRF
Web Service Resource Framework from OASIS.
WSS
Work Smart Standards.
WTA
West Turn Around. A reference to that part of the positron beam transport line that makes a 180 degree turn and returns to sector 1.
WUS
Workshop on Undulator Systems (for Free Electron Lasers).
WWS
WorldWide Study (of physics and detectors for the ILC).
WWSOC
WorldWide Study Organising Committee (ILC).
WWTP
Waste Water Treatment Plant.
WWW
World-Wide-Web. The leading information retrieval service of the Internet (the worldwide computer network). The Web gives users access to a vast array of documents that are connected to each other by means of hypertext or hypermedia. Developed by Tim Berners-Lee and his colleagues at CERN in 1990.
www-tech
World Wide Web Technical Committee (SLAC).
WWWCC
WWW Coordinating Committee (SLAC)
WYLBUR
A text editing program for the VAX. It was a component of SLAC's mainframe system before VM, the IBM 360 OS/VS.
WYSIWYG
"What You See Is What You Get." Used to describe word processors and editors which allow you to edit an exact facsimile of what will be printed, including equations, figures, etc.
WZ
Wess-Zumino
WZNW
Wess-Zumino-Novikov-Witten
WZW
Wess-Zumino-Witten
W3
See WWW.
W3C
World Wide Web Consortium. An international consortium of organizations involved with the Internet and the Web. W3C's purpose is to develop open standards so that the Web evolves in a single direction.

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

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