CERN

Massi File Annotations (versioning)

LPC home

LPC: 79977

Massi File versioning in the experiments

Each experiments develops its appropriate versioning system according to the guidelines in the Massi File Specifications. Below, the versioning systems of the various experiments are explained. This information is extracted automatically from the Massi files. On the bottom of the page a table lists the versions of the current Massi files for each fill number in each experiment.

Massi file versioning is available as of 2017.

Luminosity version annotationLumi-region version annotation

ALICE


k.l.m [ _number(s) ... ]
digitmeaning and possible values
k:Luminometer identification
valuemeaning
1:T0
2:VO
l:Processing Level
valuemeaning
1:Online
2:Offline
m:Correction/Calibration applied
valuemeaning
1:Pileup corrected
2:Pileup not corrected

ALICE


[ _number(s) ... ]
digitmeaning and possible values

ATLAS


k.l [ _number(s) ... ]
digitmeaning and possible values
k:denotes the source of the luminosity data (online or offline)
valuemeaning
0:online luminosity
1:offline luminosity
l:denotes the luminosity tag from which this data came from
valuemeaning
0:no tag (online)
001:OflLumi-Run3-001 tag, filled with best offline calibration at time data is recorded
002:OflLumi-Run3-002 tag, updated in October 2022 with consistent values across year
003:OflLumi-Run3-003 tag, updated in February 2023 for Moriond, 2023 initial values
004:OflLumi-Run3-004 tag, updated in October 2023 for HI calibration update + bgd subtraction, 2024 pp startup
005:OflLumi-Run3-005 tag, updated in July 2024 to update pp calibration
006:OflLumi-Run3-006 tag, April 2025 startup

ATLAS


k.l [ _number(s) ... ]
digitmeaning and possible values
k:denotes the source of the beamspot data (online or offline)
valuemeaning
0:online beamspot
1:offline beamspot
l:denotes the beamspot tag from which this data came from
valuemeaning
0:no tag (online)
01:IndetBeampos-RUN3-ES1-UPD2-01
02:IndetBeampos-RUN3-ES1-UPD2-02
03:IndetBeampos-RUN3-ES1-UPD2-03
04:IndetBeampos-RUN3-ES1-UPD2-04
05:IndetBeampos-RUN3-ES1-UPD2-05

CMS


k.l [ _number(s) ... ]
digitmeaning and possible values
k:denotes the algorithm used to derive the luminosity data
valuemeaning
1:online values using best lumi selection
2:online values for XeXe running based on hfoc algorithm
l:denotes the calibration used to obtain the luminosity data
valuemeaning
1:online calibration
2:online calibration using post TS1 values
3:hfoc calibration for XeXe running
4:online calibration after change starting with Fill 7038
5:special calibration using bcm1f
6:interim calibration for LS2 MD

CMS


k.l [ _number(s) ... ]
digitmeaning and possible values
k:denotes the source of the beamspot data (online or offline)
valuemeaning
0:online beamspot
1:offline beamspot
l:denotes the beamspot reprocessing version
valuemeaning
10:End of Year 2024 data re-processing

LHCb


k.l [ _number(s) ... ]
digitmeaning and possible values
k:data source
valuemeaning
1:luminosity based on calorimeter, using log-zero method
2:luminosity based on PLUME detector, using log-zero method
l:processing level
valuemeaning
1:best online estimation; available minutes after the end of fill
2:best reprocessing of online estimation; available at end of year or on request

LHCb


k.l [ _number(s) ... ]
digitmeaning and possible values
k:data source
valuemeaning
1:luminosity based on calorimeter, using log-zero method
2:luminosity based on PLUME detector, using log-zero method
l:processing level
valuemeaning
1:best online estimation; available minutes after the end of fill
2:best reprocessing of online estimation; available at end of year or on request

 

 

2025 Massi-Luminosity-File Versions2025 Massi-Luminosity-Region-File Versions
Fill NoALICEATLASCMSLHCb
105892.1.11.0061.12.1
105902.1.11.0061.12.1
105912.1.11.0061.12.1
106062.1.11.0061.12.1
106112.1.11.0061.12.1
106122.1.11.0061.12.1
106162.1.11.0061.12.1
106232.1.11.0061.12.1
106262.1.11.0061.12.1
106282.1.11.0061.12.1
106292.1.11.0061.12.1
106382.1.11.0061.1
106392.1.11.0061.1
106402.1.11.0061.1
106442.1.11.0061.1
106452.1.11.0061.1
106472.1.11.0061.1
106492.1.11.0061.1
106502.1.11.0061.1
106532.1.11.0061.1
106562.1.11.0061.1
106592.1.11.006
106632.1.1
Fill NoALICEATLASCMSLHCb
105891.021.12.1
105901.021.12.1
105911.021.12.1
106061.021.12.1
106111.021.12.1
106121.021.12.1
106161.021.12.1
106231.021.12.1
106261.021.12.1
106281.021.12.1
106291.021.12.1
106381.021.1
106391.021.1
106401.021.1
106441.021.1
106451.021.1
106471.021.1
106491.021.1
106501.021.1
106531.021.1
106561.021.1
106591.02