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SLACspeak Terms

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Q
A general reference to the strength of a quad where: q = 1/Focal length.
Q
The physical symbol for electric charge, usually measured in coulombs.
QA
Quality Assurance.
QA
Accelerator Quadrupole.
QA&C
Quality Assurance and Compliance.
QA/R
Quality Assurance/Reliability.
QAP
Quality Assurance Program.
QATS
Quality Assurance Tracking System
QC
Quality Control.
QCD
Quantum Chromo-Dynamics.
QCDOC
QCD-On-a-Chip, a new class of parallel computers.
QCDSP
Quantum Chromodynamics on Digital Signal Processors
QCDSR
Quantum Chromo-Dynamics SumRules
QD
Quadrupole Defocusing.
QDI
QuaDrupole Insertion.
QDM
QuaDrupole Matching.
QED
Quantum Electro-Dynamics.
QF
Quadrupole Focusing.
QFP
Quasi-infrared Fixed Point
QFT
Quantum Field Theory
QFTH
Quantum Field THeory
QG
Quantum Gravity.
QGP
Quark - Gluon Plasma
QGR
Quantum General Relativity
QH
Quantum Hall
QHD
Quantum HadroDynamics
QIP
Quality Implementing Procedures.
QIPs
Quality Implementing Procedures.
QISM
Quantum Inverse Scattering Method.
QKT
Quaternionic Kahler with Torsion
QKZ
Quantized Knizhnik-Zamolodochikov
QLO
Qualified Laser Operator.
QM
Quantum Mechanics
QMC
Quark Meson Coupling
QMD
Quantum Molecular Dynamics.
QME
Quantum Master Equation
QND
Quantum NonDemolition
QNGT
Quantum Nonsymmetric Gravitation Theory
QPA
Quantum Privacy Amplification
QPM
Quark Parton Model
QPOS
QuasiPeriodic OScillations.
QRCM
Quantitative Reliability Centered Maintenance.
QRPA
Quasiparticle Random Phase Approximation
QSO
Quasi Stellar Objects (Quasars)
QSPIRES
A web server which is used to remotely query various SPIRES databases (HEP, BOOKS, CONF, INST, etc.). The QSPIRES query is used to locate e-mail addresses for physicists worldwide. QSPIRES is available via the Internet at qspires@slac.stanford.edu.
QTRM
Quadrupole TRiM. An extra winding on a quadrupole magnet used for making small adjustments to the field. Sometimes wired to add a small dipole field to the quadrupole, usually for steering purposes.
Quad
See Quadrupole.
QUaD
QUest at Dasi. Project utilizing the Q U Extra-galactic Survey Tel escope (QUEST) instrument at the South Pole that was installed on the mechanical structure from a previous experiment called DASI (D egree Angular Scale Interferometer).
Quadrupole
A four pole magnet used to focus beams. The strength of the field is proportional to the distance from the center. The focusing is in one plane only. In the other plane, the field is defocusing. Quadrupoles may be wired to be horizontally focusing (vertically defocusing) or horizontally defocusing (vertically focusing). At SLAC, they are named after their horizontal effect on the beam.
Quadrupole TRiM
See QTRM.
Quaero
A web-based computer tool which allows physicists worldwide to search data from Fermilab's DZero experiment. Developed by physicist Bruce Knuteson. Quaero is Latin for 'I search.' ( http://quaero.fnal.gov )
Qubit
One QUantum BIT of information.
Quench
A change of phase in a superconducting magnet in which the superconducting properties are lost. The energy released can destroy the magnet, if proper precautions are not taken to safely dissipate the stored energy.
Quencher
A Superconducting Triplet protection subsystem to initiate a quench and turn off the final triplet. This is done using a capacitive discharge to warm up the wire and bring it out of superconductivity.
QUEST
Q U Extra-galactic Survey Telescope. (South Pole)
QUEST
QUasar Equatorial Survey Team.
Quick Access
An access to a PPS-controlled area defined as being for less than two hours and with fewer than five people.
QWT
Quarter Wave Transformer.

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

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