Skip to main content.

Archives & History Office

SLACspeak Terms

Search or browse by letter A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
C
See Collimator.
C
A high-level programming language developed by Dennis Ritchie and Brian Kernighan at Bell Labs in the mid 1970's. C is particularly popular with personal computer programmers because it is relatively small, and requires less memory than other languages.
C Line
The beam line extending from the BSY to End Station C. The C line is being replaced by the Final Focus Test Beam.
C++
A high-level programming language developed by Bjarne Stroustrup at Bell Labs. C++ adds object-oriented features to its predecessor, C. It is one of the most popular programming languages for graphical applications, such as those that run in Windows and Macintosh environments.
C&A
Certification & Authorization.
CA
Collider Arc (North or South).
CA
Corrective Action (ES&H)
CA HSC
CAlifornia Health and Safety Code.
CAA
Clean Air Act. (42 U.S.C. Ch. 85, Sec. 7401 et seq)
Cable
See CBL.
Cable Access Receiver
See CAR.
Cable Access Transmitter
See CAT.
CAD/CAM
Computer Assisted Design / Computer Assisted Manufacturing.
CAER
Community Awareness and Emergency Response (a CMA program).
CAIRS
Computerized Accident / Incident Reporting System.
CAIs
Calcium Aluminum-rich InclusionS.
CAL
CALorimeter subsystem (GLAST).
CAL
A hodoscopic CsI detector used to measure the energy, in calories, of a Gamma-ray event.
  Glast Category: hardware
Cal-ARP
California Accidental Release Program.
CAL/OSHA
California Occupational Safety and Health Administration.
Calendar Year
See CY.
CALF
Cursor Addressed Limited Facility. A console using only a single Ann Arbor Ambassador terminal.
Calibration
BPMs: Calibration measures pedestal and ADC linearity so the computer can position the beam from the BPM data more precisely.
Calibration
Magnets: A method of matching the actual current of a magnet to its set value. The DAC to current function is accurately measured for improved trimming performance.
Calibration
For the BaBar detector: the characterization of the response of the detector and/or detector electronics to known stimuli. The purpose of calibration is to record those responses, in order to provide a better understanding of the physics significance of the event data, and to allow optimization of the detector for taking subsequent event data.
CALICE
CAlorimeter for the LInear Collider with Electrons.
CALICO
Correction Algorithms for Linear COlliders
CALO
Calorimeter.
Calorimeter
A detector or any device measuring the energy of a particle or system.
CALS
Computer-Aided Acquisition and Logistics Support.
CalSim
CALibration SIMulation. (LSST)
CAM
CAMAC. A klystron SDS message indicating that the CAMAC system is malfunctioning at a given station.
CAM
Control or Cost Account Manager.
CAM
Continuous Air Monitor. (SSRL)
CAMAC
Computer Automated Measurement And Control. A system interface between computers and the devices they control. It is a backplane type crate system incorporating a 5Mb/sec serial link. The SLC CAMAC system includes more than 300 crates.
CAMAC Communication
See CAMCOM.
CAMAC DAC Location
See DACL.
CAMAC Serial Repeater
See CSR.
CAMCOM
CAMAC Communication. An interactive program used primarily for diagnostics during early commissioning of new hardware on the CAMAC system. It allowed users to communicate with CAMAC modules directly from a terminal.
CAMEO
Computer-Aided Management of Emergency Operations. (NOAA)
CAMP
Capital Asset Management Process.
CAMP
CFEL-ASG-Multi-Purpose. Instrument constructed for a series of exp eriments at the LCLS.
CAMR
CAMeRa.
CAMS
Corrective Action Management System.
CAN
Controller Area Network.
CANDI
Controller ANalog/Digital Interface card.
CANGAROO
Collaboration of Australia and Nippon for a GAmma Ray Observatory in the Outback.
CANGAROO
(see CANGAROO's website)
  Glast Category: organization
  URL: http://icrhp9.icrr.u-tokyo.ac.jp/
CAO
Collaborative Agreement Order. Like a purchase order, but contain s a disclaimer that it is not a contract, but is issued as an admi nistrative convenience.
CAP
Continuous Acquisition Pixel.
CAP
Corrective Action Plan
Cap Sigma
Capital Sigma. The square root of the quadratic sum of the sizes of the two beams at the IP. It is a fit parameter from a beam-beam deflection scan.
Capital Sigma
See Cap Sigma.
CAPRI
California Asymmetric Phi factoRI.
CAPTAR
The SLAC CAble Plant Tracking database.
CAPTCHA
Completely Automated Public Turing test to tell Computers and Huma ns Apart.
CAR
Cable Access Receiver. A triple width CAMAC module with an RF receiver (modem). The CAR converts a serial bit stream to parallel data words.
CAR
Canonical Anticommutation Relations
CARB
California Air Resources Board. See ARB.
Carcinogenic
Capable of causing cancer.
CARD
Computing and Administrative Resources Division.
CARE
Coordinated Accelerator Research in Europe.
CAS
Chemical Abstracts Service.
CAS
CERN Accelerator School.
CAS
Chinese Academy of Sciences.
CAS
Cost Accounting Standards.
CAS-0
CID Analyzing Station. A horizontal bend energy spectrometer.
CASA
Center for Advanced Studies of Accelerators.
CASE
Computer-Aided Software Engineering.
Cask
A thick-walled container (usually lead) used to transport radioactive material. Also called a coffin.
CAST
CERN Axion Solar Telescope.
CASTOR
Centauro And Strange Object Research.
CAT
Cable Access Transmitter. A CAMAC module which broadcasts information to other micros on SLCNET channels, or over a baseband link.
CAT
Compteur A Trous. (Detector-CERN)
CAT
Cherenkov Array at Themis. Astronomy telescope array in the French Pyrenees.
CatApp
Computer application developed by SUNCAT scientists that displays reaction and activation energies for reactions occurring on cataly tic metal surfaces.
CATER
Computer Aided Trouble Entry and Report. A VAX database program used to manage maintenance issues in which problems and solutions are reported and communicated to the proper department. `To cater' means to report a problem in this. (Formerly called ARTEMIS.)
CATS
Corrective Action Tracking System. (Superseded by ATS)
CATV
Community Antenna Television. A closed broadband coaxial cable network used for information distribution in campuses, buildings and cities. It is in use at SLAC in the Learning Room in the Library. See also SITN
Caustic Soda
Sodium Hydroxide, a strong alkaline substance used as the cleaning agent in some detergents.
Caustics
A large class of substances which form solutions having a high pH, also bases and alkalis.
Cavity
A metal enclosure whose dimensions are designed to resonate at some given RF or microwave frequency. Used to accelerate beams and/or compensate for loss of beam power in damping and storage rings.
Cavity resonator
A tunable copper cavity capable of storing electromagnetic energy of a particular wavelength and frequency and then, when properly synchronized, of imparting that energy to an electron beam passing through it. Invented by William W. Hansen, who called it the "rhumbatron."
CAZ
Controlled Access Zone.
CB
Crystal Ball (see entry under same)
CBAL
Crystal Ball detector. (See entry under Crystal Ball.)
CBAR
Crystal Barrel detector at CERN-LEAR.
CBD
Commerce Business Daily
CBE
Cylindrical Beam Expander.
CBF
Correlated Basis Function
CBI
Cosmic Background Imager.
CBI
Critical Behaviors Inventory.
CBL
CaBLe. Klystron summary display message indicating that the cable has a problem.
CBM
Cloudy Bag Model
CBOX
Crystal Box at LAMPF.
CBR
Cosmic Background Radiation
CBT
Computer-Based Training.
CBX
Colliding Beam eXperiments
CC
Command Center.
CC
Cloud chamber.
CC
Coordinating Council (ES & H)
CC
Citizen Committee
CC
Configuration Control.
CCAST
China Center of Advanced Science and Technology.
CCB
Change Control Board.
CCB
LAT CCB approves and tracks changes to software.
  Glast Category: organization
CCC
Computer Coordinating Committee
CCCP
Chemical Carcinogen Control Program. (SLAC)
CCD
Charge-Coupled Device. A device wherein semiconductors are arranged so that the output of one serves as the input of the next .
CCD
Charge Control Device.
CCFM
Ciafaloni-Catani-Fiorani-Marchesini
CCG
Central Computing advisory Group. Also, Computing Coordination Gr oup.
CCIN2P3
Computing Center of the National Institute of Nuclear Physics and Particle Physics. (2 N's and 3 P's)
CCIRDA
Coordinating Committee for Informatics Research Development and Application (DOE)
CCITT
Consultative Committee International Telephone and Telegraph. A unit of the International Telecommunications Union (ITU) of the United Nations. It produces technical standards, known as recommendations, for all internationally controlled aspects of analog and digital communications.
CCITT V.24
A set of data communications standards, similar to RS-232C, that calls out the signals to use to connect digital equipment to make the equipment compatible.
CCJ
RIKEN PHENIX Computing Center in Japan, a regional center.
CCLRC
the Council for the Central Laboratory of the Research Councils in England.
CCM
Channel-Cut Monochromator. Device that uses a pair of crystals to produce a monochromatic beam.
CCNET
A DECNET-based network that includes Carnegie-Mellon, Case Western Reserve, Columbia University, New York University Business School, Stevens Institute of Technology, and Vassar College. Although now part of the Internet, CCNET sites originally communicated with BITNET and MAILNET through gateways.
CCR
Central Control Room. The original control center for the accelerator. Not in use anymore but still wired to some control systems. Located North of the LINAC gallery near Sector 27.
CCR
California Code of Regulations (formerly California Administrative Code).
CCR
Canonical Commutation Relations
CCS
Chromatic Correction Section. A beam transport section in the Final Focus area. It consists of three Bend magnets (B1,2,3) interlaced with eight quads and eight sextupoles. This section is designed to take out the chromatic aberration at the IP due largely to the final triplet quadrupoles. ALSO Collider Correction Section.
CCS
Carbon Capture and Storage.
CCS Bump
A betatron phase bump produced with magnets A15, A14, A7, and A6 across the CCS in the SFF or NFF. It produces a small amount of dispersion at the IP to cancel the residual dispersion at the final focus interaction point.
CCSDS
International working group that publishes standards for data- and information-systems used in space missions. The telecommands and telemetry exchanged with the LAT are structured according to a data packet standard publish ed by CCSDS.
  Glast Category: organization
CCSDS
Package containing utility routines that allow other FSW subsystems to create and populate telecommand and telemetry packets.
  Glast Category: FSW, package
CCSDS Packet
A spacecraft data packet standard approved by the Consultative Committee for Space Data Systems (CCSDS).
  Glast Category: software, spacecraft
CCST
California Council on Science and Technology.
cctbx.xfel
Computational Crystallography ToolboX for X-ray Free- Electron Lase rs.
CCW
Constituent Concentrations in Waste.
CCWE
Constituent Concentrations in Waste Extract.
CD
Controls Department.
CD
Critical Decision.
CDC
Central Drift Chamber. A part of a typical colliding beam detector used to track charged particle trajectories.
CDC
Center for Disease Control. (Federal)
CDC
Controlled Document Collection. (SLAC)
CDE
calorimeter Crystal DEtector (GLAST).
CDE
LAT calorimeter CsI crystal detector element.
  Glast Category: hardware
CDF
Collider detector at Fermilab
CDFA
California Department of Food and Agriculture.
CDHS
California Department of Health Services (aka DHS, DOHS, SDOHS).
CDHS
Neutrino detector at CERN.
CDM
Cold Dark Matter
CDM
Package providing a framework for other FSW subsystems to manage low-level configuration parameters stored onboard as binary files.
  Glast Category: FSW, package
CDMS
Cryogenic Dark Matter Search.
CDMS
Controlled Document Management System. (SLAC)
CDO
Controlled Document Owner. (SLAC)
CDR
Conceptual Design Report
CDS
Controlled Document Specialist. (SLAC)
CDW
Charge Density Waves.
CEA
Cambridge Electron Accelerator, a joint Harvard- Massachusetts Institute of Technology Facility. Laboratory was closed in 1974.
CEA
Commissariat à l'Énergíe Atomique. (French Atomic Energy Commission)
CEA Bypass
Modification to the CEA synchrotron to turn it into a collider.
CEB
Causal Entropy Bound.
CEBAF
The Newport News, VA Continuous Electron Beam Accelerator Facility was officially dedicated on 5-24-96, at which time its parent lab was renamed the Jefferson National Accelerator Laboratory (JNAL). CEBAF is a JNAL accelerator that uses radio- frequency cavities made of super-conducting materials to propel high-energy electrons around a race-track shaped course.
CEC
California Energy Commission.
CEDE
Committed Effective Dose Equivalent.
CEF
Conventional and Experimental Facilities. (Formerly SEM and EFD)
CEH
Collider Experimental Hall. The pit at the east end of the SLC, housing both the MARK II and the SLD detectors and their associated electronics.
CEL
|Files that allow one to collect different root files (i.e., mc, digi, recon, relations) and group them together by run/event (id)entifications. By referencing a single cel file, one can then find all the ROOT files associated w| |ith those ids. |
  Glast Category: data processing, SAS, software
CELESTE
a cosmic gamma-ray experiment.
Cell
A repetitive transport line unit in which the optics are such that beta out = beta in. Typical LINAC cells are 24 meters long, except for sectors two through fours which are six to 12 meters long.
Cell
The smallest structural part of living matter capable of functioning as an independent unit.
Cell
In solid waste disposal, a hole where waste is dumped, compacted, and covered with layers of dirt on a daily basis.
CELL
CELLO detector at DESY.
CELLS
Consorci per a la constuccio, Equipament i explotacio del Laborato re de Llum de Sincrotro. (Spain)
CEM
Continuous Emission Monitoring.
CEM
Cascade Exiton Model.
CENIC
Corporation for Education Network Initiatives in California.
Central Control Room
See CCR.
Central Drift Chamber
See CDC.
Centrifugal Collector
A mechanical system using centrifugal force to remove aerosols from a gas stream or water from sludge.
CEP
Capitol Equipment Project.
CEPP
Chemical Emergency Preparedness Program. (from EPA)
CEQ
Council on Environmental Quality.
CEQA
California Environmental Quality Act. (CPRC Sec. 21000 et seq)
CERCLA
Comprehensive Environmental Response, Compensation and Liability Act. Also known as Superfund. (42 U.S.C. Ch. 1, Subch. J, Part 300 et seq)
Cerenkov detector
see Cherenkov detector.
CERFnet
California Education and Research Federation Network.
CERN
European Organization for Nuclear Research, Geneva, Switzerland. (in French: Organisation Europeenne pour la Recherche Nucleaire). The acronym, still used, derives from the organization's original name: Centre Europeen pour la Recherche Nucleair.
CERN ISR
CERN proton-proton Intersecting Storage Rings (62 GeV Ecm).
CERN LEP
CERN Large Electron-Positron collider (161 GeV, as of 1996)
CERN PS
CERN's Proton Synchrotron, a 630-meter-circumference machine that began operation in 1959.
CERN SC
CERN cyclotron (600 MeV/c Plab)
CERT
Community Emergency Response Team (SLAC)
Certifiable Systems
Computer and telecommunications systems that can be used for, or modified to be used for, classified information.
Certified Hazardous Waste Specialist
See CHWS.
Cesiate
The process of coating a cathode with a cesium compound to decrease its work function and improve its electron yield is called cesiation. The polarized light source used at CID in 1992 had its cathode cesiated once every several days.
CESR
Cornell Electron-positron Storage Collider (10 GeV).
CesrTA
Cornell electron storage ring - Test Accelerator.
CF
Core Function.
CF
Conflat Flange.
CfA
Center for Astrophysics (Harvard-Smithsonian).
CFCs
Chlorofluorocarbons. A family of inert, nontoxic, and easily liquified chemicals used in refrigeration, air conditioning, packaging, insulation, or as solvents and aerosol propellants. Because CFCs are not destroyed in the lower atmosphere, they drift into the upper atmosphere, where their chlorine components destroy ozone.
CFEL
Centre for Free-Electron Laser science.
CFI
CAD Framework Initiative.
CFL
Color Flavor Locked.
CFO
Chief Financial Officer.
CFP
Cosmology and Fundamental Physics.
CFR
Code of Federal Regulations.
CFS
Cubic Feet per Second.
CFS
Conventional Facilities and Siting. (Also shown as CF&S).
CFT
Conformal Field Theory
CG
Computation research Group.
CGC
California Government Code.
CGC
Clebsch-Gordan coefficients
CGHS
Callan-Giddings-Harvey-Strominger
CGI
Combustible Gas Indicator.
CGI
Common Gateway Interface
CGI
Common Graphical Interface
CGM
Computer Graphics Metafile.
CGR
Carbon Glass Resistance
CGRaBS
Candidate Gamma-Ray Blazar Survey project.
CGRO
Compton Gamma Ray Observatory.
CGRO
Launched April 5th, 1991, the CGRO covered an energy range from 30 keV to 30 GeV. (See NASA's CGRO website.)
  Glast Category: astronomy
  URL: http://cossc.gsfc.nasa.gov/docs/cgro/index.html
CGS
Chemical and General Safety.
CGWG
Cyber Governance Working Group.
CH
Combinatorial Hierarchy.
CH
Collider Hall (See also CEH).
CH
CHicago office. (DOE)
CH&SC
California Health and Safety Code.
CHEER
Canadian High Energy Electron Ring.
Chemical Emergency
See Emergency (Chemical).
Chemical Transportation Emergency Center
See CHEMTREC.
CHEMNET
A mutual aid network of chemical shippers and contractors accessible through CHEMTREC.
CHEMTREC
CHEMical TRansportation Emergency Center. Sponsored by the Chemical Manufacturers Association. Telephone: 800-424-9300.
Chen Institute
Institute for the study of particle astrophysics and cosmology. Established in 2001 at Stanford University and located at SLAC.
CHEP
Computing in High Energy and nuclear Physics (conference).
Cherenkov Detector
A detector for counting or detecting high energy charged particles. The particle passes through a liquid or a gas, and the light emitted as Cherenkov radiation is registered by a photomultiplier tube. (Cherenkov radiation is produced when a charged particle passes through a medium at a speed greater than the speed of light in that medium.)
Cherenkov Ring Imaging Detector
See CRID.
CHESS
Cornell High Energy Synchrotron Source.
CHF
Central Helium Facility.
CHFB
Cranked Hartree-Fock-Bogoliubov
CHI
CHIcane.
Chicane
A Beam line bump made with four bend magnets. Chicanes are used as energy filters to transmit only the part of the spectrum wanted or to eliminate particles of the wrong charge (as in the positron chicane in EP02). The strengths of the four bends are calculated to transmit beams of a specific energy. There are three chicanes in the SLC; the CID Compressor Chicane, the LI01 Chicane, and the EP02 Chicane.
CHICOS
California High school Cosmic ray ObServatory.
CHIPP
the Swiss Institute of Particle Physics.
Chirped Beam
A beam that is accelerated so that the tail of the electronc bunch can be given a higher energy than the head (LCLS).
CHL
Chaudhuri-Hockney-Lykken
CHLOREP
CHLOrine Emergency Plan operated by the Chlorine Institute and activated through CHEMTREC.
Chlorinated Hydrocarbons
Halogenated hydrocarbons in which the halogen in the molecular structure is chlorine.
Chlorinated Solvent
An organic solvent containing chlorine atoms, e.g., methylene chloride and 1,1,1-trichloralmethane which is used in aerosol spray containers and in traffic paint.
Chlorofluorocarbons
See CFCs.
CHM2
CHARM-II neutrino detector (glass) at CERN.
CHP
California Highway Patrol.
ChPT
Chiral Perturbation Theory
CHRIS/HACS
Chemical Hazard Response Information System/Hazard Assessment Computer System. Developed by and accessed through the U.S. Coast Guard. Also available for purchase in four manuals. HACS is a computerized model of the four CHRIS manuals.
CHRM
CHARM neutrino detector (marble) at CERN.
Chromatic Aberration
The energy-dependent distortion caused by a quadrupole. Particles of different energy are focused to different points because high-energy particles are focused (or bent) less than lower-energy particles. This is analogous to light optics, where light of different colors has different wavelengths (energy) and therefore different indexes of refraction when passing through a thin lens.
Chromatic Correction Section
See CCS.
Chromatic Filamentation
The increase in the phase space area resulting from chromatic aberration. As the beam rotates in phase space, the resulting emittance is larger.
Chronic Effects
Toxic effects which occur over relatively long periods of time, e.g., months or years. See also Acute Effects.
Chronic Toxicity
A qualitative measure of a toxic agent administered repeatedly over a long period of time, e.g., months or years. See also Acute Toxicity.
CHSC
California Health and Safety Code.
CHWMP
County Hazardous Waste Management Plan. (CH&SC Sec. 25135 et seq)
CHWR
CHilled Water Return.
CHWS
Certified Hazardous Waste Specialist. A certification issued by the National Environmental Health Association (NEHA) to degreed individuals with specified experience in hazardous waste management who pass a written examination.
CHWS
CHilled Water Supply.
Ci
Curie. A quantitative measure of radioactivity equal to 3.7 x 1010 disintegrations per second.
CIBS
CERN-IHEP boson spectrometer.
CICC
Cable In Conduit Conductors
CICG
Centre International de Conférences Genève. (Geneva International Conference Center)
CICHEP
Cairo International Conference on High Energy Physics.
CID
Collider Injector Development. The first accelerator section of the SLC (also called the injector). Also: The general area near the injection guns, or the PPS area going from the guns to K01 accelerator section.
CID
Center for Inverse Design. DOE National Renewable Energy Lab (NREL ) project in which SSRL is a participant.
CID Analyzing Station
See CAS-0.
CIEMAT
Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas. (Research Center for Energy, Environment and Technology).(Spain)
CIFAR
Canadian Institute For Advanced Research.
CIFS
Committee on the International Freedom of Scientists.
CIM
Constituent Interchange Model.
CINVESTAV
Centro de INVestigación y ESTudios Avanzados del Instituto Politécnico Nacional. (Center for Investigation and Advanced Studies of the National Polytechnic Institute in Mexico)
CIRCE
The Coherent InfaRed CEnter, at LBNL.
CIS
Commonwealth of Independent States.
CISA
Committee on International Scientific Affairs (APS).
CISAC
Center for International Security and Cooperation. (Stanford)
CISC
Complex Instruction Set Computer.
CISC
Center for Interface Science and Catalysis. (SLAC/Stanford)
CISE
Computer and Information Science and Engineering
CISO
Chief Information Security Officer.
CISTI
Canada Institute for Scientific Technology Information.
CIT
Compact Ignition Tokamak.
CITRIX
Software application that allows SLAC staff and users to access computer accounts from home.
CIV
Cachazo-Intriligator-Vafa.
CJT
Cornwall-Jackiw-Tomboulis
CKM
Cabibbo-Kobayashi-Maskawa. The name given to a matrix of numbers related to quark interactions. The numbers are often shown in a gr aphical form called the unitary triangle.
CL
Controller Laser.
CLAS
CEBAF Large Acceptance Spectrometer
Class A Fires
Fires involving ordinary combustible materials.
Class B Fires
Fires involving flammable liquids.
Class C Fires
Fires involving energized electrical equipment.
Class D Fires
Fires involving combustible metals such as Li, Mg, Ti, Zn, Na, and K.
CLCWL
China's Linear Collider Workshop.
CLE
Central Lab Expansion.
CLEAN
Continuous wave Linac for Efficiency and Availability iNnovation.
Clean Room
A specifically prepared and designated location that limits the intrusion of airborne particles and/or fume contamination using positive pressure, filtered air, special ventilation systems, and other methods.
Cleanup
Actions taken to deal with a release or threat of release of a hazardous substance that could affect humans and/or the environment. The term `cleanup' is sometimes used interchangeably with the terms remedial action, removal action, response action, or corrective action.
CLEO
Cornell magnetic detector at CESR.
CLE2
CLEO II detector at CESR.
CLGW
CooLinG Water.
CLIC
CERN LInear Collider. CERN design for a two stage RF linear collider, described in a series of several hundred 'CLIC-Notes'. Also 'Compact Linear Collider' (see CLIC Note 302).
Client-Server Architecture
A distributed computing system in which a client process (a front end program requesting a service) sends a request to a program running on another machine (a server) to perform some function. For example, a database client might request a database server to supply some collection of sorted data. The server performs the sort and sends the sorted data to the client.
Client/Client Process
A program running on a network workstation that requests services from a network server. For example, a client might be a user sitting at a workstation using a front end program--a client process --that makes a request to a database server for data.
CLOC
Central Lab Office Complex. (LCLS)
Closed-Loop Recycling
Reclaiming or reusing wastewater for non-potable purposes in an enclosed process.
CLR
Common Language Runtime.
CLSS
Compton Laser Safety Stopper.
CM
Crisis Manager.
CM
Center of Mass
CM
Construction Manager.
CMA
Chemical Manufacturers Association.
CMB
Cosmic Microwave Background.
CMBR
Cosmic Microwave Background Radiation.
CMD
Cryogenic magnetic detector at VEPP-2M, Novosibirsk.
CMFD
Centrally Managed - Field Deployed.
CMIP
Common Management Information Protocol. An OSI standard protocol used with the Common Management Information Services (CMIS).
CMIS
Common Management Information Services.
CMMCOM
See CAMCOM.
CMMS
Computer Maintenance Management System.
CMOS
Complimentary Metal-Oxide-Semiconductor detector.
CMR
Colossal MagnetoResistance.
CMS
Compact Muon Solenoid, general purpose detector at the LHC (CERN).
CMS
Center-of-Mass System.
CMS
Central Lab Machine Shop. A SLAC Group.
CMS
Chemical Management Services.
CMSSM
Constrained Minimal Supersymmetric Standard Model.
CMT
Crisis Management Team.
CMT
Based on packages, the CMT environment specifies conventions for naming and addressing packages, files, and directories. Tools for implementing these conventions are also provided. (See CMT website.)
  Glast Category: software
  URL: http://www.cmtsite.org/
CMX
Customized extension of the CMT configuration management system.
  Glast Category: FSW, package
CN
Cyanide.
CNAO
Centro Nazionale di Adroterapia Oncologica, located in Pavia in Italy.
CNGrid
China National Grid.
CNGS
CERN Neutrinos to Gran Sasso, a progject.
CNLS
Cornell Laboratory of Nuclear Studies.
CNM
Chiral NonMinimal
CNO
A discriminated and summed signal representing highly ionizing particles from heavy nuclei (CNO). This is a non-veto input from the ACD to the GEM.
  Glast Category: hardware
CNRS
Centre National de la Recherche Scientifique (France).
CNS
Central Nervous System.
CNTR
Counters.
CO
Conduit Only.
Coaxial Cable
An electrical cable in which a piece of wire is surrounded by insulation and then surrounded by a tubular piece of metal whose axis of curvature coincides with the center of the piece of wire, hence the term, `coaxial.' Such cable offers high transmission rates, and is used by Ethernet.
COBE
COsmic Background Explorer satellite.
COBIT
Control Objectives for Information and Related Technology.
COD
Chemical Oxygen Demand.
COE
Conduct Of Engineering.
COFC
Container On Flat Car.
COG
Continuity Of Government.
CoHE
Control of Hazardous Energy.
Coherent Oscillation
An oscillation created when all particles of a bunch oscillate with the same phase.
COI
Conflict Of Interest.
Coliform Index
A rating of the purity of water based on a count of fecal bacteria.
Collaboration
The set of physicists (and related postdoctoral and graduate students) who are actively involved in a specific experiment at any time during its development, running, analysis and publication
Collider Experiment Hall
See CEH.
Collider Injector Development
See CID.
Collimator
Sometimes called `slit.' A mechanical device installed in a beam line in order to reduce the aperture. SLC collimators are either `fixed' or have movable `jaws' and are used to define the energy and/or remove beam tails. Protection collimators are used to intercept high power beams before they can impact on magnetic elements in a beam line. See also PC.
Combustion Product
Substance produced during the burning or oxidation of a material.
COMET
superconducting proton cyclotron at the Paul Scherrer Institute (P SI).
COMFORT
A program to design transport line optics. COMFORT computes only twiss and storage ring parameters.
Command Post
See CP.
Common Management Information Protocol
See CMIP.
Community Antenna Television
See CATV.
Community Toxicology Unit
See COMTU.
COMPASS
Common Muon and Proton Apparatus for Structure and Spectroscopy (CERN)
COMPLETE
COordinated Molecular Probe Line Extinction Thermal Emission surve y.
Compliance Schedule
A negotiated agreement between a pollution source and a government agency that specifies dates and procedures by which a source will reduce emissions and, thereby, comply with a regulation.
Compressor
A system, incorporating an RF source and a bending transport line section, used to reduce the length of a particle bunch. An energy spread is introduced into the bunch using a short accelerator section. The leading particles, with more energy, will traverse a longer path through the bend section because they bend less. The tail, or trailing particles of lower energy, will make a sharper bend and catch up with the head, thus reducing the bunch length. This method is used to reduce bunch length after the damping rings in the NRTL and the SRTL.
Compton Effect
The reduction in the energy of high-energy photons when they are scattered by free electrons during elastic collisions.
Compton Polarimeter
A device which ascertains the degree of polarization of the electron beam by measuring the cross section of compton-scattered electrons from polarized laser light.
Computer Aided Trouble Entry and Report
See CATER.
Computer Architecture
The area of computer study that deals with the physical structure (hardware) of computer systems and the relationships among these various hardware components.
Computer Automated Measurement and Control
See CAMAC.
COMTU
COMmunity Toxicology Unit. A subdivision of DHS.
Confined Aquifer
See Artesian Aquifer.
Confluence
Server-based, knowledge management tool that enables subject matter experts to access, create, and edit content using their browser and the wiki markup language to create web pages.
  Glast Category: software
Conservation
Avoiding waste of, and renewing when possible, human and natural resources. The protection, improvement, and use of natural resources according to principles that will assure their highest economic or social benefits.
Console Desk
The central desk in MCC where call-in books, log books and other references are located.
Console on Wheels
See COW.
Constituent Package
Specific software package (e.g., AcdDigi, AcdRecon, CalDigi, CalRecon, TkrDigi, TkrRecon, etc.) included in a top-level package such as the GlastRelease, BeamtestRelease, EngineeringModel, or ScienceTools pack ages.
  Glast Category: software, SAS, package
Contaminant
Any physical, chemical, biological, or radiological substance or matter that has an adverse affect on air, water, or soil.
Contingency Plan
A document setting out an organized, planned, and coordinated course of action to be followed in case of a fire or explosion or a release of hazardous waste from a TSDF or a generator's facility that could threaten human health or the environment. (from RCRA)
Continuously Updating Display
See CUD.
Control Technique Guidelines
See CTG.
Controlled Access
A PPS interlocked state that allows controlled entry without violating the `searched state' of an SLC area. An MCC operator must visually (by remote cable TV) identify and log all persons entering or leaving the area. An interlocked key bank system is used to control the number of people in the area. The operator logs the names of the people entering the area, and releases each of them a key which they may use for entry and must return upon leaving the area.
Controlled Area
An area wherein entry is controlled for the purpose of radiation protection.
CONTV
CONTrol Valve.
COO
Chief Operating Officer.
Cookie
A message given to a Web browser by a Web server. The browser stores the message in a text file called cookie.txt. The message is then sent back to the server each time the browser requests a page from the server.
Coolant
A liquid or gas used to reduce the heat generated by power production in nuclear reactors, electric generators, various industrial and mechanical processes, and automobile engines.
Cooling Tower
A structure that helps remove heat from water used as a coolant, e.g., in electric power generating plants.
COPPER
Modularized pipeline readout electronics system. Developed for KEK B-factory upgrade.
CORBA
Common Object Request Broker Architecture, a software system which deals with distributed object computing
CORR
CORRector magnet
Corrosion
The dissolving and wearing away of metal caused by a chemical reaction such as between water and the pipes that the water contacts, chemicals touching a metal surface, or contact between two metals.
Corrosive
A chemical agent that reacts with the surface of a material causing it to deteriorate or wear away.
COSM
Cosmology and astrophysics.
COSMOS
COsmologically Significant Mass Oscillation Search (A Fermilab Exp eriment)
Cost Recovery
A legal process by which potentially responsible parties who contributed to contamination at a Superfund site can be required to reimburse the Trust Fund for money spent during any cleanup actions by the federal government.
COSWA
Committee on Science and World Affairs.
CoSWMP
County Solid Waste Management Plan. (California)
COSY
COoler SYnchrotron.
COTR
Coherent Optical Transition Radiation.
Counter
An electronic device used to count pulses or the frequency of oscillations.
Counter
A particle detector used for counting particles or monitoring radiation.
COUPP
Chicagoland Observatory for Underground Particle Physics.
Cover
Vegetation or other material providing protection as ground cover.
COW
Console On Wheels. An operator station including an Ann Arbor terminal, a multibus crate with a micro, two displays or CRTs and four to eight control knobs.
CP
Charge Parity.
CP
Cathodic Protection.
CP
Command Post. A facility located at a safe distance upwind from an accident site, where the on-scene coordinator, responders, and technical representatives can make response decisions, deploy manpower and equipment, maintain liaison with news media, and handle communications.
CP Symmetry
Charge-parity symmetry. Under this principle, the physics of an interaction would be unaffected if a particle were to be converted into its anti-particle and viewed in a mirror.
CP Violation
The small but important asymmetry of the weak interactions under the combined operations of charge conjugation and parity inversion. Was discovered experimentally by James Cronin and Val Fitch of Princeton, who won the 1979 Nobel Prize in Physics for the discovery.
CPARS
Contractor Performance Assessment Reporting System.
CPC
Chemical Protective Clothing.
cPCI
compact Peripheral Component Interface.
CPDF
Central Personnel Data File.
CPDG
Comprehensive Project Design Guidance. (ILC)
CPE
Controls and Power Electronics (Operations Directorate).
CPIC
Capital Planning and Investment Control.
CPO
Chiral Primary Operator
CPP
Compliance Partnership Program.
CPR
CardoPulmonary Resuscitation
CPRC
California Public Resources Code.
CPS
Circular Polarization Sign.
CPSA
Consumer Product Safety Act.
CPSC
Consumer Product Safety Commission.
CPSR
Contractor Purchasing System Review.
CPT
Charge Parity Transformations
CPT
A suite of tests designed to verify that the performance of each subsystem remains within specificationin the observatory- wide environment. The CPT is also designed to demonstrate the health of each subsystem and collect calibr ation and trending data. Tests are run in both primary and redundant configurations.
  Glast Category: general, hardware, operations
CPT theorem
Charge conjugation Parity inversion Time reversal theorem. Holds that physics should not discriminate between particles and anti-particles (moving backwards in time).
CPU
Central Processing Unit (in a computer)
CPV
Charge-Parity Violation.
CPWC
Central Proportional Wire Chamber.
CQM
Constituent Quark Model
CR
Cosmic Ray.
CRAC
Computer Room Air Conditioners.
CRAD
Criteria Review and Approach Document.
CRADA
Cooperative Research and Development Agreement (between a DOE contractor and private industry)
Crash Bar
A device to push open a locked PPS gate in case of a fire or other emergency. Crash bars can be reset only with special keys kept in the MCC control room keysafe.
Crate
A CAMAC card slot chassis and power supply incorporating a backplane which supports CAMAC modules. Crates are connected to each other and to the micro by a 5 Mbit serial link. The crate modules are the last link in the chain which interfaces the computer to the hardware in the SLC control system.
Crate Verifier
A CAMAC module whose purpose is to test and verify the operational condition of its crate. Verifier modules are usually installed in slot 1 of the crate.
CRBE
First interactive system on the SLAC 360/91 (1968). Replaced with WYLBUR in 1970.
CREAM
Cosmic Ray Energetics and Mass experiment.
CRESST
Cryogenic Rare Event Search with Superconducting Thermometers.
CRID
Cherenkov Ring Imaging Detector. An SLD detection system which identifies particles by measuring their velocities.
Criteria
Descriptive factors taken into account by EPA in setting standards for various pollutants. These factors are used to determine limits on allowable concentration levels, and to limit the number of violations per year. When issued by EPA, the criteria provide guidance to the states on how to establish their standards.
Criteria Pollutants
The 1970 amendments to the Clean Air Act required EPA to set National Ambient Air Quality Standards for certain pollutants known to be hazardous to human health. EPA has identified and set standards to protect human health and welfare for six pollutants: ozone, carbon monoxide, total suspended particulates, sulfur dioxide, lead, and nitrogen oxide. The term, `criteria pollutants' derives from the requirement that EPA must describe the characteristics and potential health and welfare effects of these pollutants. It is on the basis of these criteria that standards are set or revised.
CRM
Customer Relations Management.
CRO
Chief Research Officer.
CROP
Cosmic Ray Observatory Project.
Cross Section
The area of the section of an object generated by the intersection of a plane with that object.
Cross Section
A measure of the probability that a collision will occur between a beam and a particular particle. The rate for a given process is proportional to its cross-section.
Crowbar
A circuit designed to quickly short out an electrical voltage in order to protect either equipment or personnel downstream of the system.
CRPP
Centre de Recherches en Physique des Plasmas.
CRSI
Concrete Reinforcing Steel Institute.
CRYO
CRYogenic Operations. A SLAC Group in the Experimental Facilities Department that is responsible for the storage, transportation and use of low temperature liquid gases (commonly used as targets, or in detectors and superconducting magnets).
Cryogenic
Substance having a temperature below -150 degrees F (-101.1 degrees C).
Cryogenic Operations
See CRYO.
Cryogenics
The branch of physics and engineering dealing with very low temperatures.
Cryogenics Engineering
See CYE.
Cryostat
An apparatus for maintaining a very low temperature. The final focus superconducting triplet quadrupoles and the spin rotator solenoids are enclosed in cryostats (a fancy name for a thermos bottle).
Crystal Ball
Crystal Ball detector. Built by a SLAC/Stanford, CalTech, Harvard, Princeton collaboration. Used on SPEAR (at SLAC) from 1978 to 1981; used at DORIS starting in 1982; in 1997 moved to the AGS at Brookhaven.
CSA
Chemical Waste Storage Area.
CSA
Canadian Standards Act.
CSB
Charge Symmetry Breaking.
CSB2
Columbia University - Stony Brook GBO calorimeter installed in an NaI array.
CSC
Cathode Strip Chambers.
CSE
Cross System Extension.
CSIP
Charge-Sensitive Infrared Phototransistor.
CSIP
Cyber Safety Improvement Plan.
CSIRO
Commonwealth Scientific and Industrial Research Organisation. (Australia)
CSKR
Cremmer-Scherk-Kalb-Ramond.
CSM
Calogero-Sutherland-Moser
CSO
Caltech Submillimeter Observatory (Hawaii).
CSO
Chief Safety Officer. (SLAC)
CSP
Chemical Strategies Partnership.
CSPP
Cyber Security Program Plan.
CSR
CAMAC Serial Repeater. Used where CAMAC crates are separated by long distances as in the arcs. It is an in-line amplifier for CAMAC signals.
CSR
Coherent Synchrotron Radiation.
CSX
Five channel differential transceiver.
CT
Cooling Tower.
CT
Computer-assisted Tomography.
CT
Cold Test.
CTA
Cerenkov Telescope Array.
CTC
Closed Timelike Curves.
CTD
Cumulative Trauma Disorder. A form of musculo-skeletal disorder caused by damage to tissue from repetitive motion or sustained posture.
CTDB
Hardware interface for exchange of telecommands and telemetry: implemented on the LAT according to the MIL-STD-1553 specification.
  Glast Category: hardware
CTDB
Package providing software driver support for the command and telemetry data bus.
  Glast Category: FSW, package
CTEQ
Coordinated Theoretical-Experiment project on the QCD.
CTF
Collider Test Facility
CTG
Control Technique Guidelines. A series of EPA documents designed to assist states in defining reasonable available control technology (RACT) for major sources of volatile organic compounds (VOC).
CTIM
A database secondary indicating the last time a magnet was successfully calibrated.
CTM
Corner Transfer Matrix
CTP
Closed Time Path
CTS
Package in the software chain responsible for routing incoming telecommand packets and outgoing telemetry packets.
  Glast Category: FSW, package
CTV
Vehicle configured to support RF testing with the spacecraft.
  Glast Category: spacecraft
CTW
Cooling Tower Water.
CUB
Central Utility Building.
CUD
Continuously Updating Display. A video display unit in MCC indicating faulted devices in the machine. The better term for CUD is `Status Summary Display (SDS).' There are several of these units in MCC.
CUDA
Compute Unified Device Architecture. An open-source compiler.
CUI
Controlled Unclassified Information.
Cumulative Working Level Months
See CWLM.
CUP
Central Utility Plant.
Curie
See Ci.
Cursor Addressed Limited Facility
See CALF.
CUSB
Columbia University-Stony Brook segmented NaI detector at CESR.
CV
Cost Variance.
CVD
Chemical Vapor Deposition method
CVM
Cluster Variation Method
CVS
Tool designed to manage and track revisions of sets of documents, including source code, build files, project documentation, etc. All documents are contained in a central CVS repository.
  Glast Category: software
CVSS
Common Vulnerability Scoring System. (Computing)
CW
Continuous Wave (RF).
CW
Cooling water. See also LCW.
CW
Code Workshop.
CWA
Clean Water Act. (33 U.S.C. Sec. 1251 et seq)
CWC
California Water Code.
CWE
Current Working Estimate.
CWFA
Cherenkov Wake Field Accelerator
CWKB
Gomplex Wentzel-Karmers-Brillouin.
CWLM
Cumulative Working Level Months. The sum of lifetime exposure to radon working levels expressed in total working level months.
CWMA
Centralized Waste Management Area.
CWMB
California Waste Management Board.
CWR
Collaboration-Wide Review (BaBar).
CWR
Contingent WorkeR.
CX
Categorical Exclusion.
CXD
Categorical Exclusion Determination.
CXI
Coherent X-ray Imaging (LCLS).
CXIDB
Coherent X-ray Imaging Database.
CXL
The central controller chassis from Cerberus, used at SLAC for fire detection.
CY
Calendar Year, 1 Jan thru 31 Dec. See also FY (Fiscal Year).
CY
Calabi-Yan
Cyberspace
A term coined by William Gibson in his fantasy novel `Neuromancer' to describe the `world' of computers, and the society that gathers around them. Now more generally defined as the on-line world of computer networks.
CYE
CrYogenics Engineering. A SLAC Organizational Group.
CYL
CYLinder.
CYO
CrYogenics Operations.
Czar
Term used to designate person within a group who has responsibility for administration of a type of information resource. See also mega-czar.
C2CR
Colliders to Cosmic Rays, a conference meeting in Prague in Sept 2005.

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

TIS: Archives and History Office | Library | InfoMedia Solutions