T
T&DF Trigger & Data Flow system (GLAST).
T(c) Critical Temperature (for superconductors).
T/R Transmit/Receive.
T2K Tokai to Kamioka (KEK experiment).
TA Test Accelerator.
TAC Toxic Air Contaminant. (CH&SC Sec. 39650 et seq)
TAC Texas Accelerator Center.
TAC Time to Amplitude or Analog Converter.
TAC Technical Advisory Committee (LCLS).
TAG Temporal Axial Gauge
Taleo Enterprise management staffing software in use at SLAC.
TAMA Interferometric gravitational-wave detector. (Japan)
TANGO an object oriented control system based on CORBA.
TAOS Taiwanese American Occultation Survey.
TAPS Two-Arm Photon Spectrometer
TARC Third-Party Activity Review Committee or The Activity Review Committee reviews and approves activities with external entities (SLAC).
Target Coil The coil around the positron target.
TARLA Turkish Accelerator and Radiation Laboratory at Ankara.
TASI Theoretical Advanced Study Institute.
TASS TASSo detector (DESY).
Tau Charm Factory See TCF.
Tauon Tau-Lepton.
TB Two Boson
TBA Two-Beam Accelerator.
TBA Thermodynamic Bethe Ansatz
TBD Technical Basis Document (ES&H).
TBR To Be Replaced. A klystron status mode indicating the klystron tube needs replacement.
TC Toxicity Characteristics.
Tc critical Temperature (in superconductivity).
TC Target Changer multiple, beryllium, single foil, liquid H2or D2
TCA 1,1,1-Trichloroethane.
TCAV Transverse CAVity. (LCLS)
TCE Trichloroethylene.
TCF Tau Charm Factory. A very high-luminosity electron- positron collider with a total energy of about 3 to 4.5 GeV. This energy range enables the copious production of tau leptons and charmed mesons by electron-positron annihilation with a minimum of background from other annihilation processes.
TCLP Toxicity Characteristic Leaching Procedure. (See 40 CFR, Part 268, Appendix l.)
tcmIS total chemical Information System.
TCP Transmission Control Protocol. The major transport protocol in the Internet suite of protocols providing reliable, connection- oriented, full-duplex streams. Uses IP for delivery.
TCP/IP Transmission Control Protocol/Internet Protocol. A common computer data standard combining transport and network level protocols. Often used with Ethernet as a physical layer protocol.
TCPIP See TCP/IP
TCSA Truncated Conformal Space Approach
TCSG A secondary collimator at the LHC.
TCW ThermoCouple Wire.
TD Transportation Department.
TDAQ Week Trigger and Data AQuisition Week. (Atlas -- at SLAC)
TDGL Time-Dependent Ginzburg-Landau
TDHF Time-Dependent Hartree-Fock.
TDM Transportation Demand Management.
TDP Technical Design Phase. (ILC)
TDP-1 Technical Design Phase 1 (ILC).
TDR Technical Design Report.
TDRSS Tracking and Data Relay Satellite System. (GLAST)
TEA Triethylamine
TEAM Transformational Energy Action Management.(DOE Initiative)
TEC Total Estimated Cost.
TEDE Total Effective Dose Equivalent.
TEK Twisted Euguchi-Kawai.
Telnet The Internet standard protocol for remote terminal connection service. Telnet allows a user at one site to interact with a remote time-sharing system at another site as if the user's terminal were connected directly to the remote computer.
TEM Tower Electronics Module. (GLAST)
Ten Finger Box A section in the DRIP vacuum chamber where ten beam pipes are connected together.
TERA Thunderstorm Energetic Radiation Array. (University of Florida/ Florida Tech)
TERA TErapia con Radiazioni Adroniche, or Therapy with Hadronic Radiations. part of the Italian foundation for hadron therapy, Fondazione per Adroterapia OncologIca.
Teratogenic Capable of producing congenital malformations.
Terminal An interactive station connected to a host computer. Can be classified into four categories: visual display, hard copy, graphics and emulation. A terminal emulation can be done with a microcomputer and the appropriate software. Terminals usually consist of a keyboard, modem or network connection, and video display.
Terminal Server A small, specialized, networked computer that connects many terminals to a LAN through one network connection. Any user on the network can then telnet to various network hosts. A terminal server can also connect many networks' users to its asynchronous ports.
TERR Transmitter ERRor.
Tertiary Treatment Advanced cleaning of wastewater that goes beyond the secondary or biological stage. It removes nutrients such as phosphorus and nitrogen and most BOD and suspended solids.
TES Transition Edge Sensors.
TESLA TeV Energy Superconducting Linear Accelerator (DESY)
Tesla The standard unit of magnetic field strength. A typical non-superconducting magnet has a maximum strength of approximately two tesla.
TESLA-XFEL TeV Energy Superconducting Linear Accelerator X-Ray Free-Electron Laser. (DESY)
TESS Transitory Exoplanet Survey Satellite.
TeV Tera Electron Volt (1 trillion electron volts).
TEX TeX (pronounced 'tek'). A text processing program, available for many computers, to create and format text output. TeX is a free typesetting system designed by Stanford's Donald Knuth.
TeX macro A TeX command that invokes a predefined set of other TeX commands, which may contain other TeX macros or TeX primitive commands.
TeX primitive A command native to TeX, that is, a command that TeX recognizes when no extra macros are defined.
TFBK Timing FeedBacK. A feedback used to stabilize kicker timing.
TFD Thermo Field Dynamics
TFT Topological Field Theory.
TFXA Time Focused Xtal Analyzer
TG Tangential Group
TGAS Trigger Gate And Synchronization. A module which allows continuous gating of the gun trigger in steps of a few picoseconds. It uses the 178.5 MHz RF synchronized with the 119 MHz of aPDU to allow fine adjustments.
TGC Thin-Gap Chambers.
TGC Triple Gauge Couplings
TGM Toroidal Grating Monochromator
TGP Tuition Grant Program. (Stanford)
THDM Two Higgs Doublet Model.
THEO THEOretical or heavily model-dependent result.
Thermocouple Reference Plane See TRP.
Thermoluminescent Dosimeter See TLD.
THI High intensity transport
THM TriHaloMethane.
THP THeoretical Physics. (SLAC)
Threshold Limit Value See TLV.
Threshold Planning Quantity See TPQ.
THY Theory.
Thyratron A gas filled tube used as a switching device for modulators and for kickers. The tube holds off high voltage until its grid is pulsed, ionizing the gas, and allowing immediate high current flow. Its solid state equivalent is the SCR, or silicon controlled rectifier. See SCR.
Thyratron Reservoir A device for regulating the ionization gas pressure in a thyratron.
THz TeraHertz.
TIC Time Interval Counter.
TID Technology and Innovation Directorate. (SLAC)
TIFF Tagged Information File Format.
TILC The International Linear Collider (workshop).
TIM Technical Interchange Meeting.
Time Reference See TREF.
Time Slot See TS.
Time Slot Separation The timing jitter or variance between beams on different time slots. It is caused by time varying magnetic or electric fields not synchronous with the incoming AC phase.
Time to Digital Converter See TDC.
TIMES Theory Institute for Materials and Energy Sciences
Timing Feedback See TFBK.
TIPP Technology and Instrumentation in Particle Physics (Conference)
Title 08 The title of the California Code of Regulations which contains regulations promulgated by Cal/OSHA pertaining to worker safety and health.
Title 13 The title of the California Code of Regulations which contains regulations promulgated by the CHP pertaining to the transport of hazardous materials.
Title 19 The title of the California Code of Regulations which contains regulations promulgated by OES pertaining to business emergency plans, area plans, emergency spill notification, and community right-to-know.
Title 22 The title of the California Code of Regulations which contains regulations pertaining to hazardous waste management and other related matters as promulgated by the CDHS.
Title 23 The title of the California Code of Regulations which contains regulations regarding water protection (including underground tanks) as promulgated by the SWRCB.
Title 26 The title of the California Code of Regulations which contains excerpts from other titles pertaining to toxics. This title was created as a convenience to the user. It contains no regulations which are not also located within another of the first twenty-five titles.
TIU Tone Interrupt Unit. The MPS system uses a 20 to 60 KHz tone signal loop whose interruption by various machine protection monitoring devices will cause the beam to trip off. The tone interrupt units are the interface between the tone loop and these devices.
TIXEL TIme-resolving piXELated particle detector.
TKR silicon-strip detector TracKeR (GLAST)
TL Test Laboratory building.
TL Team Leader.
TLA Three-Letter Acronym.
TLC Taiwan Light Source.
TLC TeV Linear Collider.
TLD ThermoLuminescent Dosimeter. Sometimes called a 'Film Badge.' Every SLAC employee who has to enter the area inside the radiation fence must be issued, and carry, a TLD at all times.
TLM TeLeMetry.
TLNG TooLiNG
TLNGB TooLiNG Ball.
TLS ThermoLuminescent Sheet stack (detector). (Japan).
TLV Threshold Limit Value. Maximum workplace, airborne concentrations to which normal, healthy, adult workers may be exposed daily without adverse effects. Determined by the American Conference of Governmental Industrial Hygienists. Also see PEL.
TLV-C TLV-Ceiling. An occupational exposure standard which should never be exceeded.
TLV-Ceiling See TLV-C.
TLV-Short Term Exposure Limit See TLV-STEL.
TLV-STEL TLV-Short Term Exposure Limit. An occupational exposure standard which is a 15-minute time-weighted average which may not be exceeded more than once in a one-hour period and no more than four times in an eight-hour work shift.
TLV-Time-Weighted Average See TLV-TWA.
TLV-TWA TLV-Time-Weighted Average. An occupational exposure standard which is a time-weighted average for a normal 8-hour work day and 40-hour work week.
TMA Telescope Mount Assembly (LSST).
TMAE Tetrakis diMethylAmine Ethylene.
T-Matrix A reference to the Twiss Parameters Matrix.
TMIT TransMitted InTensity. A sum signal derived from the 4 striplines of a BPM or from a toroid. The TMIT signal is a running indication of the beam's transmission intensity down the machine.
TMO Time-resolved Atomic, Molecular and Optical Science end station (LCLS-II)
TMR Tunneling MagnetoResistance
TMS Travel Management System
TMSK Trigger MaSK. A 36-bit mask indicating the allowable broadcast pattern of a beam code.
TMTP Test Move To Production. (OCIO)
TO Technical Operations.
To Be Replaced See TBR.
TOC Technical Operations Committee.
TOC Total Organic Carbon.
TOC Trigger Over Current. A Klystron SDS message.
TOF Time-Of-Flight.
TOFC Trailer On Flat Car.
TOFF Time OFFset.
TOKAMAK Toroidal Magnetic Chamber
TOLS A set of BDES tolerances in the database for trimming and checking a magnet.
TOMCAT Server plugin that creates an environment for servlet execution. (GLAST)
Tone Interrupt Unit See TIU.
Tone Loop A PPS/MPS system circulating AC signals (tone) throughout selected beam monitoring devices which when interrupted by a fault condition in one of the devices will shut off the machine. It includes a tone transmitter and a tone receiver (Rx) and does not have to be a closed loop. See TIU.
TOO Target Of Opportunity.
TOP Technical Operations Procedure.
TOP TOP of duct.
TOPAZ TOP And Z. The KEK TRISTAN solenoidal spectrometer with TPC, time projection chamber.
TOPS A network software package used to communicate between Macintosh computers.
TOPZ See TOPAZ.
TORI TORoId.
TORO TOROid. A beam current monitor which uses transformer action to measure the intensity of a beam pulse. Usually placed around a ceramic gap in the beam pipe.
Toroid See TORO.
Toroid Charge Monitor See TCM.
TORR Named after Torricelli. A unit of pressure equivalent to 1/760 Atmosphere or 133.322 Pascals.
TOTEM an experiment at CERN, called Total Cross Section, Elastic Scattering and Diffraction Dissociation.
Toxic Cloud An airborne mass of gases, vapors, fumes, or aerosols containing toxic materials.
Toxicity The ability of a substance to cause injury once it reaches a susceptible site in or on the body.
TPa TeraPascal. One trillion Pascals.
TPC Total Project Cost.
TPCA Toxic Pits Cleanup Act. (CH&SC Sec. 25122.7, 25208-25208.17)
TPI Tap changer Position Indicator
TPQ Threshold Planning Quantity. (from EPCRA)
TPS Tagged Photon Spectrometer (FNAL)
TPS Taiwan Photon Source.
TPY Tons Per Year.
TQ Technology Quadrupole.
TQFT Topological Quantum Field Theory
TR Travel Office.
TRAC Teachers Research Associate Program.
Track16 Track display program for the 1.6-GeV Magnetic Spectrometer.
Transaction Processing A major type of networked and shared database application where transactions (such as purchasing an airline ticket) from multiple simultaneous users are immediately recorded in database (or collection of databases), and where the database remains in a continuous state of updated and current transition. Transaction processing implies the existence of a robust underlying management system that ensures the integrity of the database against which the transactions are made, as well as the ability to recover the database to a known point of existence in the event of hardware or software crash.
Transceiver Transmitter-receiver. The physical device that connects a host interface to a local area network, such as Ethernet. Ethernet transceivers contain electronics that apply signals to the cable and sense collisions.
Transmission Control Protocol/Internet Protocol See TCP/IP.
Transmitted Intensity See TMIT.
TRANSPORT A computer program for designing and modeling charged particle beam transport systems. It is a first and second order matrix multiplication program and was developed at SLAC for designing beam line optical systems.
Transport Layer An OSI layer that is responsible for reliable end-to-end data transfer between systems.
TRAP Penning trap.
TRB Technical design Review Board. (SLAC)
TRC Total Recordable Cases. A rate defined as the number of cases (accidents) per 200,000 person-hours worked per year.
TRD Transition Radiation Detector
TREF Time REFerence. T-Matrix and beam matrix timing delays associated with each individual PDU. It is the time difference between a fiducial and a bunch 1 beam BPM signal arriving at that PDU's crate.
TRG TRiGger. A klystron SDS message indicating that there are no triggers present.
TRI Toxic chemical Release Inventory.
Trickle charge Procedure at SSLR where a small amount of beam is injected every few minutes to keep the stored current steady to within a fraction of a percent.
Trigger See TRG.
Trigger Gate and Synchronization See TGAS.
Trigger Mask See TMSK.
Trigger Multiplexer See TMUX.
Trigger Over Current See TOC.
Trim An operator command to bring a magnet current or a klystron phase to a desired value. If a device has drifted from its book value, 'trimming' it will cause the computer to adjust it back to the proper setting.
Triplet See Final Triplet.
TRIUMF TRIangle University Meson Facility (Canada)
TRMS Ratio of RMS TOLS to TOLS.
TRNARND TuRNARouND.
TRO Travel Reimbursement Office. (SLAC)
Trombone In the positron transport system, just after the positrons are created by the source, the beam line makes a 180 degree turnaround called `ETA.' The whole assembly, including B1 Bends, a sextupole, and instrumentation, can physically be moved forward or backward like a trombone slide, causing the path length to vary. This adjusts the time of arrival of the positrons for re-injection into the LINAC at sector 1.
TRP Thermocouple Reference Plane. A cold junction used as a temperature reference for the 15 thermocouples of a SAM.
TRS Training Registration System.
TRT Total Run Time.
TRT Transition Radiation Tracker
TS Test Stand (Klystron).
TS Time Slot. One of the six zero crossings of the 360 Hz 3 phase PG&E power used to generate timing fiducials. At a 120pps rep rate, time slots 1 and 4 are used: at 60pps, time slot 1 or 4 is used.
TSA Technical Safety Appraisal.
TSC Terminal Standards Committee.
TSCA hazardous waste and Toxic Substance Control Act. (15 U.S.C. Sec. 2 601 et seq)
TSCD Toxic Substances Control Division. A division of California Department of Health Services.
TSD Treater, Storer, Disposer (ES&H).
TSD Facility See TSDF.
TSDF Treatment, Storage, or Disposal Facility (for hazardous waste). (From RCRA.)
TSI Thermal System Insulation.
TSOM Transmitter Start Of Message.
TSP Total Suspended Particulate.
TSP Titanium Sublimation Pump.
TSP Theory and Special Projects.
TSR Technical Safety Requirements
TSS Total Suspended Solids.
TSSM TeV scale Supersymmetric Standard Model
TT Transverse Tracefill
TTC TESLA Technology Collaboration.
TTE Time Tagged Event
TTF TESLA Test Facility.(DESY)
TTHMs Total TriHaloMethanes.
TTIM A magnet parameter indicating the last time the magnet was successfully trimmed. A magnet database secondary.
TTLC Total Threshold Limit Concentration. (CCR Title 22)
TTO Technology Transfer Office. (SLAC)
TTO Transfer To Operations.
TTS Time-To-Spill
TTU Transportable Treatment Unit.
TUD Tune Up Dump. A safe place to absorb beam energy during tuning and adjustment.
TULIP Trilateration Utility for Locating IP hosts.
TUNE In a storage ring, the fractional part of the quotient when the betatron oscillation frequency (or synchrotron frequency) is divided into the go-around frequency. The whole digit part of this quotient is called the betatron number.
Tune To adjust the steering, focus, current or energy of a beam to bring it to proper specifications.
Tune Up Dump See TUD.
Tuple In relational database systems, a record.
TURTLE Trace Unlimited Rays Through Lumped Elements. A computer program used to model beam transport optics by simulating the propagation of a beam, one particle at a time.
TV TeleVision camera.
TWAS Academy of Sciences for the Developing World. (Known as TWAS for its original name, Third World Academy of Sciences).
TWC Talk, Walk and Clean (Safety Stand-down).
TWG Technical Working Group (2006).
Twiss See TWSP.
Twiss Parameter See TWSP.
Twisted Pair Cable made up of a pair of insulated copper wires wrapped around each other to cancel the effects of electrical noise.
TWSP TWiSs Parameter. The beam ellipse is given by the matrix: s11 s12 b a = e s21 s22 a g, where e, b, a, g are the beam parameters: emittance, betafunction, Alpha and gamma respectively. These parameters have historically been known as the Twiss Parameters after the physicist R.Q. Twiss.
TWT Traveling-Wave Tube.
TWTA Traveling-Wave Tube Amplifiers.
TX Tone Transmitter. See Tone Loop.
TXI Tender X-ray Instrument (LCLS-II)
TXM Transmission X-ray Microscopy.
TXRF Total Reflection X-ray Fluorescence.
