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This page has been moved to [[Glossary]].
This page is a prototype of a glossary for Mu2e. The style of this page is taken from [https://www.mediawiki.org/wiki/Manual:Glossary https://www.mediawiki.org/wiki/Manual:Glossary].
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Some questions:
 
# Do we need a glossary.  I say yes because too many simple things are, otherwise, never properly defined.
# Who needs to be part of this discussion?
# What is the scope of this document?
## Just computing terms and put the physics and detector terms elsewhere?
## Computing terms plus physics and detector terms that are encountered in day to day computing work?  The prototype is written like this.
## Do we make it more inclusive?
# Is this the right style?  If not, what is.
# Does a link to this page belong on: [[Main_Page]]? From [[Computing]]? Other?
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This page is a glossary and acronym dictionary that covers the terms and acronyms that one will encounter when working with the Mu2e software.
For acronyms specific to the Mu2e Construction Project, see [https://mu2e.fnal.gov/atwork/workgroups/Accelerator/Acronyms.shtml MAD: The Mu2e Acronym Dictionary ].
 
 
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== 0–9 ==
 
==A==
 
==B==
 
==C==
;{{Anchor|CCD}}CCD
: Core Computing Division at Fermilab.  An organization with the Fermilab [[#Computing Sector|Computing Sector (CS)]].
;{{Anchor|CERN}}CERN
: A High Energy Physics lab in Geneva, Switzerland.  See the [https://home.cern CERN home page].
;{{Anchor|CLHEP}}CLHEP
: [https://proj-clhep.web.cern.ch/proj-clhep/ CLHEP: A Class Library for High Energy Physics] is a 20+ year old class library that contains classes for 3-vectors, 4-vectors, Lorentz transformations, linear algebra, Random Number engines and Random Distributions.  The GEANT4 simulation library makes extensive use of CLHEP.  Early version of Mu2e reconstruction software also used CLHEP but this is being phased out in favor of the [[#ROOT | ROOT]]  [[SMatrix | SMatrix]] package.
;{{Anchor|COMET}} COMET
: A competitor experiment, also building an experiment to look for Muon to Electron Conversion.  Located at [[JPARC]].  See also the [https://comet.kek.jp COMET Home Page].
;{{Anchor|CRV|Cosmic Ray Veto}} CRV
: The Mu2e Cosmic Ray Veto system. It is possible for a cosmic ray to interact with the Mu2e apparatus and the surrounding materials to produce a track that is indistinguishable from a conversion electron.  The purpose of the CRV is to record when cosmic rays enter the detector.  The CRV system tags events in which a cosmic ray has entered the Mu2e detector.  During data analysis Mu2e will exclude exclude tagged events.  {{Fixme|link to more CRV info}}.
;{{Anchor|CS|Computing Sector}} CS
: The Fermilab Computing Sector.  See [https://computing.fnal.gov https://computing.fnal.gov]
;{{Anchor|Calorimeter|CAL|Cal|ECAL|EMCAL}} Calorimeter
: The Mu2e Electromagnetic Calorimeter; one of the subsystems of the Mu2e detector.  It measures the energy of photons and electrons in the energy range of interest to Mu2e.  {{Fixme|link to more cal information}}.
 
==D==
;{{Anchor|Data Product|data product|data products|DataProduct}}Data Product
: The unit of data that can be read from an [[art]] format [[event-data file]].
;{{Anchor|Digi|digi|DIGI}} Digi
: A software object that represents smallest unit of [[raw data]] that is read from the experiment.  Typically it contains an identifier of an electronics channel, one or two [[TDC]] values and a set of [[ADC]] values that represent a waveform.  These objects are found in [[#data product|data products]] that are collections of many digi objects; examples include CaloDigiCollection, CrvDigiCollection and StrawDigiCollection.  Digi objects can also be produced by the Mu2e [[simulation]] code.  {{Fixme| do we want links to code; better would be to drop the examples and link to a more extensive writeup}}.
 
==E==
;{{Anchor|Event|event}} Event
: When Mu2e is taking [[on-spill]] data, an event is all of the data associated with one [[proton pulse]] aimed at the [[production target]].  When Mu2e is taking [[off-spill]] data, an event is all of the data associated with the a fixed time period.  As of March 2022, the fixed time period is 100 micro-seconds.  In both cases it includes all of the [[raw data]] plus any data that is produced by processing the raw data.  Events are collected into files that reside either on disk or tape.
 
==F==
;{{Anchor|FNAL}}FNAL
: Fermi National Accelerator Lab; the full name of Fermilab.  The lab has a [http://www.fnal.gov public home page] and a separate [https://news.fnal.gov/fermilab-at-work/ home page for employees, Users and Affliates].
 
==G==
 
==H==
;{{Anchor|Hit|hit} Hit
: Hits are created by applying calibrations to [[digis]].
 
==I==
 
==J==
 
==K==
 
==L==
 
==M==
 
==N==
 
==O==
 
==P==
;{{Anchor|Product}}Product
:  Either a [[#UPS Product| UPS Product]] or a [[#Data Product| Data Product]]; hopefully the meaning will be clear from the context. {{Fixme|why is Data Product not a red link}}.
 
==Q==
 
==R==
;{{Anchor|ROOT}} ROOT
: A [https://root.cern.ch software package for Scientific Data Analysis]] developed at [[CERN]]. It is also used as the underlying technology [[art]] format [[event-data files]].  As if March 2022, Mu2e has two data analysis environments based on ROOT, [[#TrkAna]] and [[#Stntuple]].  See also: [https://root.cern/doc/master/classes.html the ROOT Class Index].
 
==S==
 
==T==
 
==U==
;{{Anchor|UPS Product}} UPS Product
: A software package distributed using the [https://mu2ewiki.fnal.gov/wiki/UPS UPS] system; examples include the C++ compiler, [[art]], [[ROOT]], and [[GEANT4]].
 
==V==
 
==W==
 
==X==
 
==Y==
 
==Z==

Latest revision as of 18:50, 24 March 2022

This page has been moved to Glossary.

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