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ATLAS Run-3 Detector Status (from May 2022, START OF RUN 3)

Subdetector Number of Channels Approximate Operational Fraction
Pixels 92 M 96.7%
SCT Silicon Strips 6.3 M 98.3%
TRT Transition Radiation Tracker 350 k 96.6%
LAr EM Calorimeter 170 k 100%
Tile Calorimeter 5200 99.2%
Hadronic End-Cap LAr Calorimeter 5600 99.9%
Forward LAr Calorimeter 3500 99.8%
LVL1 Calo Trigger 7160 99.9%
LVL1 Muon RPC Trigger 383 k 99.8%
LVL1 Muon TGC Trigger 312 k 100%
MDT Muon Drift Tubes 344 k 99.7%
MicroMegas NSW 2.1 M 98.0%
STGC NSW 358 k 99.2%
RPC Barrel Muon Chambers 383 k 87.7%
TGC End-Cap Muon Chambers 312 k 99.4%
ALFA 10 k 100%
AFP 430 k 100%
LUCID 2x16 100%
ZDC 2x20 100%

Notes:

  • For the Pixel status: 3-Layers Pixel (80 M channels) - 96.3%; IBL (12 M channels) - 99.3%
  • For Tilecal the number of cells (including gap and crack counters) are included
  • For LVL1 Calo the number of cells reported is for the legacy system. For the upgraded system the number of cells is 32 k and will be reported once the system is commissioned
  • For RPC, most inactive channels are due to HV channels that cannot be turned on because one (of several) gas gaps connected to that channel cannot be operated
  • The RPC channel count does not take into account the new BIS78 channels. They will be included once the system is commissioned

ATLAS Run-2 Detector Status (from March 2019, END OF RUN 2)

Subdetector Number of Channels Approximate Operational Fraction
Pixels 92 M 95.7%
SCT Silicon Strips 6.3 M 98.6%
TRT Transition Radiation Tracker 350 k 97.2%
LAr EM Calorimeter 170 k 100 %
Tile Calorimeter 5200 99.5%
Hadronic End-Cap LAr Calorimeter 5600 99.7%
Forward LAr Calorimeter 3500 99.8%
LVL1 Calo Trigger 7160 99.9%
LVL1 Muon RPC Trigger 383 k 100%
LVL1 Muon TGC Trigger 320 k 99.9%
MDT Muon Drift Tubes 357 k 99.7%
CSC Cathode Strip Chambers 31 k 93.0%
RPC Barrel Muon Chambers 383 k 93.3%
TGC End-Cap Muon Chambers 320 k 98.9%
ALFA 10 k 99.9%
AFP 430 k 97.0%

Notes:

  • For the Pixel status: 3-Layers Pixel (80 M channels) - 94.8%; IBL (12 M channels) - 99.3%
  • For Tilecal the number of cells (including gap and crack counters) are included
  • For RPC, most inactive channels are due to HV channels that cannot be turned on because one (of several) gas gaps connected to that channel cannot be operated. Some of the disconnected channels are actually operable and can be made to work by an intervention in the cavern.
  • The number of channels for AFP has doubled since last year after the installation of the second arm
  • Detectors with fewer than 100 channels are not reported

ATLAS Run-2 Detector Status (from May 2018)

Subdetector Number of Channels Approximate Operational Fraction
Pixels 92 M 97.8%
SCT Silicon Strips 6.3 M 98.7%
TRT Transition Radiation Tracker 350 k 97.2%
LAr EM Calorimeter 170 k 100 %
Tile Calorimeter 5200 99.9%
Hadronic End-Cap LAr Calorimeter 5600 99.5%
Forward LAr Calorimeter 3500 99.7%
LVL1 Calo Trigger 7160 99.9%
LVL1 Muon RPC Trigger 383 k 99.8%
LVL1 Muon TGC Trigger 320 k 99.9%
MDT Muon Drift Tubes 357 k 99.7%
CSC Cathode Strip Chambers 31 k 96.1%
RPC Barrel Muon Chambers 383 k 94.4%
TGC End-Cap Muon Chambers 320 k 99.5%
ALFA 10 k 99.9%
AFP 430 k 93.8%

Notes:

  • For the Pixel status: 3-Layers Pixel (80 M channels) - 97.5%; IBL (12 M channels) - 99.3%
  • For Tilecal the number of cells (including gap and crack counters) are included
  • For RPC, most inactive channels are due to HV channels that cannot be turned on because one (of several) gas gaps connected to that channel cannot be operated. Some of the disconnected channels are actually operable and can be made to work by an intervention in the cavern.
  • The number of channels for AFP has doubled since last year after the installation of the second arm
  • Detectors with fewer than 100 channels are not reported

ATLAS Run-2 Detector Status (from July 2017)

Subdetector Number of Channels Approximate Operational Fraction
Pixels 92 M 97.8%
SCT Silicon Strips 6.3 M 98.7%
TRT Transition Radiation Tracker 350 k 97.2%
LAr EM Calorimeter 170 k 100 %
Tile Calorimeter 5200 99.2%
Hadronic End-Cap LAr Calorimeter 5600 99.5%
Forward LAr Calorimeter 3500 99.7%
LVL1 Calo Trigger 7160 99.9%
LVL1 Muon RPC Trigger 383 k 99.8%
LVL1 Muon TGC Trigger 320 k 99.9%
MDT Muon Drift Tubes 357 k 99.7%
CSC Cathode Strip Chambers 31 k 95.3%
RPC Barrel Muon Chambers 383 k 94.4%
TGC End-Cap Muon Chambers 320 k 99.5%
ALFA 10 k 99.9%
AFP 430 k 93.8%

Notes:

  • For the Pixel status: 3-Layers Pixel (80 M channels) - 97.5%; IBL (12 M channels) - 99.3%
  • For Tilecal the number of cells (including gap and crack counters) are included
  • For CSC, the number of alive channel is lower than before due to the failure of the cooling of one chamber that cannot be operated and the presence of one layer with a broken wire in another chamber
  • For RPC, most inactive channels are due to HV channels that cannot be turned on because one (of several) gas gaps connected to that channel cannot be operated. Some of the disconnected channels are actually operable and can be made to work by an intervention in the cavern during TS1.
  • The number of channels for AFP has doubled since last year after the installation of the second arm
  • Detectors with fewer than 100 channels are not reported

ATLAS Run-2 Detector Status (from May 2017)

Subdetector Number of Channels Approximate Operational Fraction
Pixels 92 M 97.8%
SCT Silicon Strips 6.3 M 98.7%
TRT Transition Radiation Tracker 350 k 97.2%
LAr EM Calorimeter 170 k 100 %
Tile Calorimeter 5200 99.9%
Hadronic End-Cap LAr Calorimeter 5600 99.5%
Forward LAr Calorimeter 3500 99.7%
LVL1 Calo Trigger 7160 99.9%
LVL1 Muon RPC Trigger 383 k 99.8%
LVL1 Muon TGC Trigger 320 k 99.9%
MDT Muon Drift Tubes 357 k 99.7%
CSC Cathode Strip Chambers 31 k 96.1%
RPC Barrel Muon Chambers 383 k 94.4%
TGC End-Cap Muon Chambers 320 k 99.5%
ALFA 10 k 99.9%
AFP 430 k 93.8%

Notes:

  • For the Pixel status: 3-Layers Pixel (80 M channels) - 97.5%; IBL (12 M channels) - 99.3%
  • For Tilecal the number of cells (including gap and crack counters) are included
  • For CSC, the number of alive channel is lower than before due to the failure of the cooling of one chamber that cannot be operated and the presence of one layer with a broken wire in another chamber
  • For RPC, most inactive channels are due to HV channels that cannot be turned on because one (of several) gas gaps connected to that channel cannot be operated. Some of the disconnected channels are actually operable and can be made to work by an intervention in the cavern during TS1.
  • The number of channels for AFP has doubled since last year after the installation of the second arm
  • Detectors with fewer than 100 channels are not reported

ATLAS Run-2 Detector Status (from Sept. 2016)

Subdetector Number of Channels Approximate Operational Fraction
Pixels 92 M 98.0%
SCT Silicon Strips 6.3 M 98.6%
TRT Transition Radiation Tracker 350 k 97.2%
LAr EM Calorimeter 170 k 100%
Tile calorimeter 5200 99.0%
Hadronic endcap LAr calorimeter 5600 99.5%
Forward LAr calorimeter 3500 99.7%
LVL1 Calo trigger 7160 99.9%
LVL1 Muon RPC trigger 383 k 99.8%
LVL1 Muon TGC trigger 320 k 99.9%
MDT Muon Drift Tubes 357 k 99.7%
CSC Cathode Strip Chambers 31 k 97.7%
RPC Barrel Muon Chambers 383 k 96.6%
TGC Endcap Muon Chambers 320 k 99.6%
ALFA 10 k 99.9 %
AFP 188 k 98.8 %

Notes:

  • For the Pixel status: 3-Layers Pixel (80 M channels) - 97.8%; IBL (12 M channels) - 99.5%
  • Now includes the 36 new trigger towers for Sector 12 and 14 on the outer layer.
  • For Tilecal we indicate the number of cells (including gap and crack counters) that is more accurate for the status
  • Detectors with fewer than 100 channels are not reported

ATLAS Run-2 Detector Status (from May. 2016)

Subdetector Number of Channels Approximate Operational Fraction
Pixels 92 M 98.2%
SCT Silicon Strips 6.3 M 98.7%
TRT Transition Radiation Tracker 350 k 97.2%
LAr EM Calorimeter 170 k 100%
Tile calorimeter 5200 100%
Hadronic endcap LAr calorimeter 5600 99.6%
Forward LAr calorimeter 3500 99.7%
LVL1 Calo trigger 7160 100%
LVL1 Muon RPC trigger 383 k 99.8%
LVL1 Muon TGC trigger 320 k 100%
MDT Muon Drift Tubes 357 k 99.7%
CSC Cathode Strip Chambers 31 k 98.4%
RPC Barrel Muon Chambers 383 k 96.6%
TGC Endcap Muon Chambers 320 k 99.6%
ALFA 10 k 99.9 %
AFP 188 k 98.8 %

Notes:

  • For the Pixel status: 3-Layers Pixel (80 M channels) - 98%; IBL (12 M channels) - 99.5%
  • Now includes the 36 new trigger towers for Sector 12 and 14 on the outer layer.
  • For Tilecal we indicate the number of cells (including gap and crack counters) that is more accurate for the status
  • Detectors with fewer than 100 channels are not reported

ATLAS Run-2 Detector Status (from Oct. 2015)

Subdetector Number of Channels Approximate Operational Fraction
Pixels 92 M 98.2%
SCT Silicon Strips 6.3 M 98.6%
TRT Transition Radiation Tracker 350 k 97.3%
LAr EM Calorimeter 170 k 100%
Tile calorimeter 4900 99.2%
Hadronic endcap LAr calorimeter 5600 99.6%
Forward LAr calorimeter 3500 99.8%
LVL1 Calo trigger 7160 100%
LVL1 Muon RPC trigger 370 k 99.75%
LVL1 Muon TGC trigger 320 k 100%
MDT Muon Drift Tubes 357 k 99.7%
CSC Cathode Strip Chambers 31 k 98.4%
RPC Barrel Muon Chambers 370 k 96.6%
TGC Endcap Muon Chambers 320 k 99.6%

Notes:

  • For the Pixel status: 3-Layers Pixel (80 M channels) - 98%; IBL (12 M channels) - 99.5%
  • For RPC detector and Trigger the percentage will include as soon as the pads are re-installed. The 36 new trigger towers are under commissioning. 20 gaps in recovery.
  • For Tilecal we indicate the number of cells that is more accurate for the status
  • All EE installed made the MDT channels to increase of 7 k

ATLAS Run-1 Detector Status (from Oct. 2012)

Subdetector Number of Channels Approximate Operational Fraction
Pixels 80 M 95.0%
SCT Silicon Strips 6.3 M 99.3%
TRT Transition Radiation Tracker 350 k 97.5%
LAr EM Calorimeter 170 k 99.9%
Tile calorimeter 9800 98.3%
Hadronic endcap LAr calorimeter 5600 99.6%
Forward LAr calorimeter 3500 99.8%
LVL1 Calo trigger 7160 100%
LVL1 Muon RPC trigger 370 k 100%
LVL1 Muon TGC trigger 320 k 100%
MDT Muon Drift Tubes 350 k 99.7%
CSC Cathode Strip Chambers 31 k 96.0%
RPC Barrel Muon Chambers 370 k 97.1%
TGC Endcap Muon Chambers 320 k 98.2%

Notes:

  • Muons do not include the EE chambers (under installation)

Major updates:
-- TomLeCompte - 01 Aug 2009
-- PippaWells - 13 Aug 2009 (fixed typo) -- ChristopheClement - 2009-09-22 (updated following email exchange with Pippa and Ludovico)
-- MarzioNessi - 2009-09-28 (update following September EB) -- MarzioNessi - 2009-12-10 (update following 10 December EB) -- MarzioNessi - 2010-04-17 (update following 16 April EB) -- MarzioNessi - 2010-04-17 (update following 25 June EB) -- MarzioNessi - 2010-09-16 (update following 16 September EB) -- MarzioNessi - 2010-11-09 (update anticipating the November LHCC report) -- MarzioNessi - 2011-02-25 (status after winter shutdown) -- MarzioNessi - 2011-05-13 (update following 13 May EB) -- MarzioNessi - 2011-07-18 (update just before EPS conference)-- MarzioNessi - 2011-10-05 (Winter update, driven by Tilecal)--Main.MarzioNessi - 2012-03-12 (update after winter closing and tile update)--Main.MarzioNessi - 2012-03-18 (RPC update)--Main.MarzioNessi - 2012-05-11 (RPC update)--Main.MarzioNessi - 2012-10-19 (RRB update)--Main.BeniaminoDiGirolamo - 2015-04-27 (Run II RRB update)

Responsible: TomLeCompte
Last reviewed by: BeniaminoDiGirolamo - 2015-04-27*

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Topic revision: r63 - 2022-05-29 - LudovicoPontecorvo
 
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