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SLACspeak Terms

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M&O
Management and Operations.
M&S
Materials and Supplies.
M-Theory
Posits that the strong-coupling behavior of supersymmetric string theories and field theories is governed by a web of dualities relating the different theories. This "web" is called "M" for magic, mystery, and / or membrane.
M-2
Mark II Experiment.
M-3
Mark III Experiment.
MA
Magnetic Alloy
MAC
Macintosh computer.
MAC
Moves, Adds, Changes. (Telecommunications)
MAC
MAgnetic Calorimeter detector at PEP/SLAC
MAC
Most Attractive Channel
MAC
Minority Affairs Committee.
MAC
Machine Advisory Committee. (ILC)
MAC CALF
A Macintosh computer used as a terminal on the VAX control system. See also CALF.
MACHe3
MAtrix of Cells of superfluid 3He.
Machine Protection System
See MPS.
MACHO
MAssive Compact Halo Object, or Massive Astrophysical Compact Halo Object
MACRO
A sequence of keyboard or touch panel operations created and saved to be initiated by one keystroke as an Operator aid. Also, a user- defined abbreviation for one or more lines of code.
MACRO
Monopole, Astrophysics and Cosmic Ray Observatory
macropackage
A collection of TeX macros, or definitions, that are used as a group to typeset documents following the guidelines of a specific page layout or style.
MacSamson
A file transfer and terminal emulation program that allows a Macintosh to be used as a terminal for a host computer.
MAD
Methodical Accelerator Design. A data input format for TRANSPORT.
MAD
Multiple wavelength Anomalous Dispersion phasing. A primary means of solving protein structures.
MAGIC
Major Atmospheric Gamma Imaging Cherenkov Telescope, on the Canary Island of La Palma.
Magnetic Fusion Energy Network
See MFENET.
Mail Gateway
A machine that connects to two or more electronic mail systems (especially dissimilar mail systems on two different networks) and transfers mail messages among them.
Mailing List
A discussion group, sometimes moderated, whose messages are distributed via e-mail from a central computer which maintains the list of people involved in the discussion.
Main AG
The power supply, Main Alternating Gradient, that drives the 920 bend magnets of the SLC arcs.
Main Beam Containment Unit
See MBCU.
Main Control Center
See MCC.
Main Drive Line
See MDL.
Main Manifold Controller
A chassis monitoring the vacuum level of a system.
Majordomo
A free mailing list server that runs under UNIX. When e-mail is addressed to a Majordomo mailing list, it is automatically re- broadcast to everyone on the list. The result is similar to a newsgroup or forum, except that the messages are transmitted as e-mail and are therefore available only to the individuals on the list.
MAN
Metropolitan Area Network. (DOE - SF Bay Area)
Management Information System
See MIS.
Manhist
Program for MANipulating HISTograms.
Manifest
Form which indicates generator, quantity, type of waste, and disposer of waste for each shipment of hazardous wastes sent to offsite facilities.
MAP
Management Assessment Program. (SLAC)
MAPS
Monolithic Active Pixel Sensor.
MARK
Name given to several generations of both accelerators and detectors created and used at HEPL and at SLAC. (See http://www.slac.stanford.edu/history/mark.shtml.)
MARK I
A famous SLAC experimental detector, used to discover the PSI particle and the tau lepton at SPEAR in the mid 1970s.
MARK II
First used at SPEAR as a replacement for the MARK I detector, this SLAC experimental detector was then used in region 12 of PEP during the 1980's, and again used as the SLC primary detector until November of 1990. See also MARK I.
MARK III
An experimental detector used at SPEAR after Mark II.
Marx Modulator
An electrical circuit designed to generate a high voltage impulse. Named for Edwin Otto Marx, who first described such a circuit in 1 924.
Mask
A collimator used to shelter a detector from synchrotron radiation or other low-energy radiation. It is also used to protect detector components from direct hits by an errant beam.
Mass Spectrometer
See Spectrometer.
Massimo
Massimo Criteria are the orbit positions at the back end of each ARC, where the beams pass through the centers of the small- aperture fixed collimators at the entrance of the FF. The x and y orbit values are usually posted near COW 3 in MCC and in the FF SLC TODAY book. Named after Massimo Placidi, a CERN physicist who assisted in commissioning the SLC final focus.
Master Oscillator
The oscillator generating the RF distributed by the MDL to the whole LINAC. The frequency is 476 MHz (the 6th subharmonic of the 2856 MHz LINAC klystron frequency).
Master Pattern Generator Zero
See MP00.
Master Trigger Generator
See MTG.
MAT
An abbreviation for MATLAB used in VAX terminology for a type of mathematical problem solving file : ` File.Mat.'
Material Safety Data Sheet
See MSDS.
MATLAB
A matrix manipulation software package available on VAX computers for computation and plotting.
Matrox Board
A hardware interface card, made by the Matrox Corporation, used to drive video display monitors. For example, a scrolling graphic display of both beams showing the energy and current as transmitted to MCC by the Micro FB31 from BPMs reading in a dispersion region in the arcs.
MAX II
Storage ring for electrons at MAX-lab, Lund University, Sweden.
MAX IV
Storage ring facility at MaxLab in Lund, Sweden inaugurated June 2016.
MB
Maxwell-Bozmann
MB
See Megabyte.
MBAM
Microsoft Bitlocker Administration and Monitoring.
MBCD
MultiBus CAMAC Driver. A Micro circuit card used to interface with CAMAC crates.
MBCU
Main Beam Containment Unit. An interlock chassis at NPI and CID for use by the beam containment system for wide pulse beams.
MBE
Multiple beam experiment
MBH
Massive Black Hole.
MBI
MicroBunching Instability.
MBK
Multi-Beam Klystron.
MBps
MegaBytes per second.
MBR
Molecular Beam Resonance technique.
MBTS
Minimum Bias Trigger Scintillators. (LHC)
MC
Monte Carlo. See Monte Carlo Method.
MC
Mode Converter
MCC
Main Control Center. The building (Bldg 005) from which the accelerator is operated. Also, the actual control room within that building.
MCC
Motor Control Center.
MCC
Merchant Category Code.
MCD
Mechanical Component Design group (at SLAC)
MCi
MegaCurie.
MCIC
The Metals and Ceramics Center (Columbus, OH).
MCL
Maximum Contaminant Level.
MCL
Maximum Concentration Level
MCMC
Markov Chain Monte Carlo
MCNP
Monte Carlo simulation package (LANL).
MCP
Major Capital Project.
MCR
Main Control Room.
MCR
Methyl-Coenzyme M Reductase.
MCRG
Monte Carlo Renormalization Group
McT
McCallum-Turner, Inc.
MD
Mechanical Design. Department (SLAC).
MD
Management Directive.
MD
Manual Damper.
MDA
Minimum Detectable Activity.
MDH4
MoDe Hutch 4. Also, MDH5, MoDe Hutch5. Aligns control of stoppers to the hutch taking beam.
MDI
Machine Detector Interface.
MDL
Main Drive Line. A temperature-stabilized coaxial cable which carries the 476 MHz master oscillator signal, and a fiducial synchronizing signal used to unify timing of the klystrons in the LINAC and to trigger the PDUs. The length of the MDL is monitored by an interferometer, since changes in its length due to thermal changes will result in klystron phase changes down the LINAC.
MDM
Mixed Dark Matter
MDM
Mobile Device Management.(OCIO)
MDOT
MicroDOT gas chambers
MDP
Markov Decision Process.
MDRP
Millikan DRoP measurement.
MDT
Monitored Drift Tubes.
MD1
Magnetic detector at VEEP-4, Novosibirsk
ME
Mechanical Engineering. Department (SLAC).
MEA
Medium-Energy Accelerator.
MEC
Matter in Extreme Conditions or Material at Extreme Conditions.
MEC
Mission Executive Council.
Mechanical Design
See MD.
Mechanical Engineering
See ME.
MECi
Matter in Extreme Conditions instrument. (LCLS)
MECL
Motorola Emitter Coupled Logic. An integrated circuit technology used for fast logic boards.
MECO
Muon-to-Electron COnversion.
MED
Mechanical Engineering and Design. (SLAC)
MED
Medical Department (under contract from the Sequoia Hospital CHW).
Medium
The material used to support the transmission of data. This can be copper wire, coaxial cable, optical fiber, or electromagnetic wave (as in microwave).
MEDSI
Mechanical Engineering Design of Synchrotron radiation equipment a nd Instrumentation.
MEE
Materials in Extreme Environments. (LCLS)
Mega-Czar
Term used to designate person within a group who has responsibility for administration of a type of information resource, and who is authorized to appoint other czars within their computing group. See also czar.
Mega-Electron-Volt
See MeV.
Megabyte
1,048,576 bytes or 1,000 kilobytes, roughly one million bytes or one thousand kilobytes.
Megaflops
One million floating-point operations per second. Abbreviated MFLOPS.
MEIS
Molecular Environmental Interface Science.
MEL-FS
Multiprogram Energy Laboratory - Facilities Support.
Melting Point
See MP.
MEM
Maximum Entropy Method.
MEM
Package that controls access to SUROM, EEPROM, RAM, and other CPU memory areas and provides telecommands allowing operators to write to memory and dump memory contents into telemetry.
  Glast Category: FSW, package
Memorandum of Understanding
See MOU.
MEMS
MicroElectroMechanical Systems.
MES
Molecular Environmental Sciences. A new discipline which uses synchrotron-based spectroscopic techniques to study environmental problems.
MESH
Microfulidic Electrokinetic Sample Holder.
MESI
Mechanical Engineering Safety Inspection.
MESSENGER
MErcury Surface, Space ENfironment, GEochemistry, and Ranging miss ion.
MET
Metrology Department (SLAC)
MET
|For GLAST, MET is the time in seconds starting from midnight (00:00:00) January 01, 2001 Coordinated Universal Time (UTC).|
  Glast Category: FSW, operations, spacecraft
MET
METallographic.
Meta Data
Data about data. In an electronic environment, meta data's basic elements are a structured format and a controlled vocabulary, which together allow for a precise description of a digital entity's content, location, and value.
Meter Relay
A Beam Containment module which looks at a magnet power supply to require that its voltage, as read on the meter, be inside or outside some set points. See also Beam Containment System.
Method 18
An EPA test method which uses gas chromatographic techniques to measure the concentration of individual volatile organic compounds in a gas stream.
Method 24
An EPA reference method to determine density, water content, and total volatile content (water and VOC) of coatings.
Method 25
An EPA reference method to determine the VOC concentration in a gas stream.
METSD
Mechanical Engineering and Technical Support Division.
MeV
Mega-Electron-Volt. 1 Million eV. The LINAC klystrons accelerate the beam approximately 200 MeV per station.
MEXT
Ministry of Education, Sports, Science and Technology (Japan).
Mezzanine
The name of the Collider Hall second floor.
ME2
see MEE.
MFA
Multi-Factor Authentication.
MFD
Mechanical Fabrication Department.
MFD
Mechanical Facilities Department.
MFD
Mechanical Fabrication Department.
MFD
Multi-Function Device
MFENET
Magnetic Fusion Energy NETwork. It is centered at the Lawrence Livermore Lab.
MFG
ManuFacturinG.
MFM
Magnetic Force Microscopy.
MFT
Managed File Transfer.
MFX
Macromolecular Femtosecond (X)crystallography.
MGC
Microgap Gas Chambers
mgd
Million gallons per day.
MHD
MagnetoHydroDynamics
MHS
Message Handling System. The system of message user agents, message transfer agents, message stores, and access units which together provide OSI electronic mail.
MHz
MegaHertz.
MIC
Monolithic Integrated Circuit.
MICADO
A steering algorithm meaning in French `MInimisation des CArres des Distortions d'Orbite' which translates to Minimization of the squares of the orbit distortion. One of several methods used by the orbit correction programs at SLAC.
MICE
Muon Ionization Cooling Experiment (RAL)
MICOM
A Switching box to manage broadband communications between terminals (via the servers) to the VAXes, the IBM 3270 and the Ethernet network. A terminal which is serviced by the `MICOM switch' can be used on any of the SLAC site's main computers.
Micro
Microcomputer. The SLC system includes about 70 microcomputers with 8086 or 80386 multitasking CPUs. Most micros are used to a) drive CAMAC crates which in turn control accelerator devices and instrumentation, b) perform standardization algorithms for magnets, and c) communicate with the VAX by either receiving instructions or returning information for monitoring and display purposes.
Microbial Action
Using the action of microbes to destroy or transform compounds.
Microcomputer
See Micro.
Micromegas
MICRO-MEsh GASeous detector.
Midas
See MidasWWW.
MidasWWW
The first fully-functional X-window GUI browser for the World Wide Web, written by Tony Johnson at SLAC. It features a multifont hypertext display, source code viewer, Motif Style Guide compatibility, and runs under UNIX and VMS. MidasWWW strongly influenced the subsequent development of the Mosaic and Netscape Navigator browsers.
Mie
A scattering spectroscopy used to study changes in the size and index of refraction of spherical and non-spherical particles whose size is within a factor of 10 from the light's wavelength. (SLAC-R -611)
MIE
Major Items of Equipment.
MIL-SPEC
MILitary SPECifications.
MILAGRO
Gamma Ray observatory at Fenton Hill, New Mexico.
Million Instructions Per Second
See MIPS.
MILNET
MILtary NETwork. Originally part of the ARPANET, MILNET was partitioned in 1984 to make it possible for military installations to have reliable network service, while the ARPANET continued to be used for research.
MIME
Multipurpose Internet Mail Extensions. A way to attach any kind of file to an e-mail message. Supersedes uuencoding in newer Unix e-mail systems.
MIN
MINute.
Mini Sam
Small Angle Monitor, used to detect Bhabha-scattered electrons in the Mark II detector.
MINOS
Main Injector Neutrino Oscillation Search (at Fermilab)
MinSec
Minimum Security requirements (computing)
MINUIT
A FORTRAN numerical minimization program written by Fred James (CE RN) in the 1970s.
MIPS
Million Instructions Per Second. Refers to the average number of machine language instructions a computer performs in one second.
MIRAS
Infrared microspectroscopy beamline at ALBA.
MIRI
Mid InfraRed Instrument. (JWST)
MIS
Management Information System. A formal network that extends computer use beyond routine reporting and into the area of management decision-making. Its goal is to provide the correct information to the appropriate manager at the right time.
Missing Pulse
See FIDO.
MIT
Massachusetts Institute of Technology
Mitigation
Measures taken to reduce adverse impacts on the environment.
MITOMI
Mechanically Induced Trapping of Molecular Interactions.
MJ
MegaJoule
MK-II
MARK II Detector. The first SLC detector, now replaced by the SLD. See MARK II.
MK-II
see MARK II
MKB
MultiKnoB. An operator station knob moving the field, the timing, or the phase of more than one device at the same time.
mKdV
modifed Korteweg-de Vries
MKN
Maung-Kahana-Norbury.
MKS
MKSU Protect. A klystron summary display status indicating that the MKSU went into `protect mode.'
MKSU
Modulator Klystron Support Unit.
MKSU Protect
See MKS.
MKT
MKSU Trigger Enable Fault. A klystron summary display indicating an interlock fault that causes inhibition of the modulator firing triggers.
ML
Microwave Lab (Stanford)
ML
Machine Learning
MLE
Maximum Likelihood Estimate.
MLEV
Magnetic LEVitation.
MLLA
Modified Leading Log Approximation
MLLW
Mixed Low Level Waste.
MMC
see Main Manifold Controller.
MMF
Magnetic Measurement Facility (B081)
MMGC
Main Manifold Gauge Controller. A special gauge (one per sector) which senses vacuum for an entire sector. In the event of a vacuum leak, the MMGC sends two signals: one to the TIU, which interrupts the beam in the injector; and one to the Fast Valve Controllers, whose valves seal and isolate that Sector from the rest of the accelerator.
MMI
Maintenance Management Index.
MMIC
Monolithic Microwave Integrated Circuit.
MMNTM
MoMeNTuM.
MMS
Missing Mass Spectrometer.
MMX
Matrixed Mfd technicians for X-ray operations.
MNS
Maki-Nakagawa-Sakata.
MNT
MaiNTenance. A klystron summary display message. In maintenance mode the klystron may be run locally. This is accomplished by triggering the unit at a time when there is no beam present.
MOAN
Modern Offline Analysis Nexus.(MARKIII)
MOC
Mission Operations Center (GLAST).
MOC
|Located at NASA's Goddard Space Flight Center (GSFC), the MOC is responsible for operating the GLAST satellite and instruments. The MOC performs all spacecraft commanding, telemetry monitoring, and Level 0 data processing and d| |elivery to the GLAST Science Support Center (GSSC), LAT Instrument Science Operations Center (ISOC), and GBM Instrument Operations Center (GIOC). Level 0 processing is performed on files received post-pass from the ground stations. An arch| |ive of all raw data for the mission is provided off-line with rapid retrieval of the last 7 days. A 30-day on-line archive of housekeeping telemetry, command transmissions, and MOC processing statistics is also maintained.|
  Glast Category: operations
MOCVD
Metal-Organic Chemical Vapor Deposition.
MOD
MODulator. A klystron summary display message indicating a a modulator interlock fault. Each klystron is powered by a modulator that produces accurately-timed high-voltage pulses of the proper width (3.5 micro sec), amplitude and polarity, to pulse the klystron tubes. Modulators can pass 4000 A peak current, and are triggered at multiples (and sub-multiples) of 60hz by the MTG. When we speak of `triggering a klystron,' we actually mean we are triggering its modulator.
MOD
MODel.
MODEM
MOdulator-DEModulator. A device or program that enables a computer to transmit data over telephone lines.
Modulation
A method used in modems to make data processing signals compatible with communication facilities.
MODulator
See MOD.
MoEDAL
Monopole and Exotics Detector At the Large hadron collider.
MOJAVE
Monitoring Of Jets in Active galactic nuclei with VLBA Experiments . (US and Europe)
Moller Polarimeter
A device used to detect the degree of polarization of electrons by using a polarized target and the Moller effect.
Moller Scattering
An elastic collision between two electrons.
MOM
Momentum
MON
Package for collecting CPU performance metrics (CPU load, etc.) that are streamed into housekeeping telemetry.
  Glast Category: FSW, package
MoNA
Modular Neutron Array. (NSCL)
MONALISA
MONitoring Agents in a Large Integrated Services Architecture.
MONALISA
MONitoring ALIgnment and Stabilization with high Accuracy. (AFT2 s ystem).
MONARC
Models of Networked Analysis at Regional Centres. LHC computing project.
MOND
MOdified Newtonian Dynamics.
MONO
MONOchromator. (LCLS)
Monte Carlo method
A method of computer simulation that allows scientists to assess probable outcomes of experiments or events. The method employs repeated simulations of an event using actual data, where known, and providing probable values of unknown data. Probable values of unknown data are selected anew for each simulation by a random number generator. Based on the Metropolis Algorithm (1946).
MORE
Microwave Oil Recovery Experiments.
MORSE
Multigroup Oak Ridge Stochastic Experiment.
MORSE-CG
Multipurpose neutron and photon transport code.
MORTRAN
A FORTRAN precompiler.
MOS
Metal On Silicon.
Mosaic
A mouse-driven interface to the World Wide Web (WWW) developed by NCSA. (See also MidasWWW)
MOSG
Maintenance Operations Support Group. A SLAC operational group.
MOSS
Microsoft Office Sharepoint Server 2007.
MOST
Ministry of Sciences & Technology. (China).
MOT
MagnetOptic Trap. A combination of laser cooling using a web of laser beams and magnetic cooling using a web of magnetic fields. The web of laser beams cools atoms by bombarding them from many directions, and the web of magnetic fields induces evaporative cooling by encouraging warmer atoms to depart. Cooler atoms coalesce in the trap to form a Bose-Einstein condensate (BEC).
Motif
A GUI based on X Windows and distributed by the Open Software Foundation.
Motorola Emitter Coupled Logic
See MECL.
MOU
Memorandum of Understanding. Used by CDHS to formalize agreement between themselves and local programs with regard to enforcement of the HWCL.
Mover
A stepping motor used to move a magnet with respect to the beam. The beam steering in the SLC arcs is done with magnet movers instead of the more conventional `trim winding' method.
MOX
Mixed-Oxide Fuels.
MP
Melting Point. The temperature at which the solid and liquid forms of a substance exist in equilibrium.
Mpc
megaparsec. One million parsecs.
MPDC
Multi-Purpose Data Center.
MPE
Maximum Permissible Exposure.
MPF
Microlensing Planet Finder. (Proposed)
MPG
Master Pattern Generator. See also MP00.
MPGD
Micro-Pattern Gas Detector.
MPIfR
Max-Planck-Institut fur Radioastronomie.
MPP
Massively Parallel Processors. For example, IBM's 9076 SP1, Thinking Machines' CM-2, and Intel's Touchstone Gamma computers.
MPPC
Multi-Pixel Photon Counter.
mppcf
Millions of particles per cubic foot of air.
MPRSA
Marine Protection, Research, and Sanctuaries Act. (Federal)
MPS
Machine Protection System. A system to protect the machine from damage from the beam. It uses ionization chambers, current monitors, temperature detectors, and microswitches on valves and other obstructions to rate-limit or turn off the beam whenever necessary.
MPS
MultiParticle Spectrometer (BNL).
MPSF
MultiParticle Spectrometer at Fermilab.
MPS2
MultiParticle Spectrometer upgrade (BNL).
MPT
|Software application used by ISOC Flight Operations staff to create LAT Timeline and PROC request products. These products are used by the ISOC to issue commands to the LAT while it is in orbit.|
  Glast Category: operations
MPWA
Model-dependent Partial-Wave Analysis
MP00
Master Pattern generator zero. A microprocessor in MCC that generates the PPYY signals.
MQCD
M theory QCD
mQs
Millicharged particles
MR
Main Ring
MRD
Monthly Reporting Database. (SLAC)
Mrem
Milli Rad Equivalent Man.
MRFM
Magnetic Resonance Force Microscopy.
MRI
Magnetic Resonance Imaging.
MRKJ
Mark-J detector at DESY
MRK1
See Mark-I
MRK2
See Mark-II
MRK3
See Mark-III
MRL
Minimum Reporting Level.
MRS
Monitored Retrievable Storage.
MRS
Magnetic Resonance Spectrometer
MRS
Metal-Resistive layer-Silicon photodetector
MRS
Materials Research Society.
MRST
Martin-Roberts-Stirling-Thorne
MS
Manual Station. A manually activated fire alarm sensor.
MS
Minimal Subtraction
MS
Member States (CERN).
MS
Management Systems
MSAM
Medium Scale Anisotropy Measurement
MSDS
Material Safety Data Sheet. An industry standard form used for listing and describing hazardous chemicals.
MSG
Mechanical Services and maintenance Group. (SSRL)
MSG
Package providing other FSW subsystems with low-level software error reporting and handling facilities.
  Glast Category: FSW, package
MSGC
MicroStrip Gas Chamber.
MSHA
Mine Safety and Health Administration.
MSI
MicroSoft Installer.
MSIS
Management Systems Improvement Strategy.
MSL
Multilayer Soft Lithography.
MSL
Mars Science Laboratory. (NASA)
MSM
Minimal Standard Model
MSO
Management System Owner.
MSP
A pulsar with a very short rotation period of 1~10 milliseconds.
  Glast Category: astronomy
MSP
|A pulsar with a very short rotational period of 1~10 milliseconds.|
  Glast Category: astronomy
MSPB
Merit Systems Protection Board.
MSPs
MilliSecond Pulsars.
MSSM
Minimal Supersymmetric Standard Model
MSTR
MicroSTRategy (software).
MSW
Mikheev-Smirnov-Wolfenstein
MT
Magic Tee.
MTA
Message Transfer Agent. An OSI application process used to store and forward messages in the X.400 Message Handling System. Equivalent to an Internet mail agent.
MTB
Materials Transportation Bureau. A subdivision of DOT.
MTBF
Mean Time Between Failures. Average time a device will function before failing.
mTCA
micro Telecommunications Computing Architecture.
MTEU
Master Terminal Expander Unit. A fire alarm chassis from LARSE.
MTF
Memorandum-To-File.
MTG
Master Trigger Generator. Located in CID, this unit synchronizes the fiducial with respect to PG&E and the damping rings.
MTI
Multispectral Thermal Imager
MTL
Main Test Level.
MTTF
Mean Time To Failure.
MTU
Maximum Transmission Unit. The largest possible unit of data that can be sent on a given physical medium. For example, the MTU of Ethernet is 1500 bytes.
MTU
Master Terminal Unit. A fire alarm chassis from LARSE.
MU
Mechanical Utilities.
Multibus
A backplane crate system similar to CAMAC or NIM designed to hold modules. SLC micros use a multibus system.
Multibus CAMAC Driver
See MBCD.
Multiknob
See MKB.
Multiple Clip
A PPS locking device which allows multiple users to lock a breaker in order to service some piece of equipment. This ensures that no one will energize the breaker while another group is still working on the equipment it powers. All locks on the multiple clip must be removed before the breaker can be energized.
Multiplex
The division of a single transmission medium into multiple logical channels supporting many apparently simultaneous sessions.
Muon
A lepton with the same charge as the electron, but with mass 210 times larger, and a lifetime of 2.2 microseconds. Because muons interact only electromagnetically, they are very penetrating. Shielding the detector from spurious muon radiation requires massive shielding. Muons were discovered in cosmic rays by C. F. Powell at Bristol in 1947.
MURA
Midwestern University Research Association. Group working on high energy proton machine in the 1950's. Donald Kerst, Director, 1956 .
MUSASHI
Monoenergetic Ultra-Slow Antiproton Source for High- Precision Investigations, a group of the ASACUSA collaboration.
MUSYC
MUltiwavelength Survey by Yale and Chile.
Mutagenic
Capable of causing changes in the genetic code by altering DNA.
Mutate
To bring about a change in the genetic constitution of a cell by altering its DNA. In turn, `mutagenesis' is any process by which cells are mutated.
MUX
An abbreviation for Multiplexer.
Mu2e
Muon to electron conversion experiment. (Fermilab)
MV
McLerran-Venugopalan
MVC
Model View Controller.
MW
MegaWatt
MWA
Management Walk-Around (SLAC)
MWC
Minority and Women's Committee.
MWH
MegaWatt-Hours.
MWPC
MultiWire Proportional Chamber.
MWTC
Multiscale Walking TechniColor
MXL
The name of a cerberus pyrotronics control panel. The term is also used at SLAC to designate the fire detection system.
MYRRHA
Multipurpose hYbrid Research Reactor for High-tech Applications. ( Planned facility in Belgium)
M13
Messier 13

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

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