Difference: LArCaloPublicResultsDetStatus (32 vs. 33)

Revision 332016-05-17 - MartinAleksa

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META TOPICPARENT name="Atlas.ApprovedPlotsLAr"
AtlasPublicTopicHeader.png
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Liquid argon purity stability

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LAr Purity Stability:

 
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Liquid Argon Purity
http://atlas.web.cern.ch/Atlas/GROUPS/LIQARGON/Organization/RefPlots/purity/purity_barrelA.jpg
Purity in barrel
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Measured impurity of the liquid argon in the barrel cryostat: Each point shows the mean of the purity values measured during one week starting middle of 2009 until beginning of 2016. Periods between pp-runs are marked gray. Data points during collisions are not taken into account due to high radiation in the calorimeter that lead to signals in the ionization chambers. Most of the monitors show charge-up effects after periods of time without high voltage. The decreasing trend in all monitors is correlated with the data taking periods. A clear explanation is not yet found, a change of other input parameters (like temperature or high voltage of the ionization chambers is excluded). The leap of the measured purity in barrel A4 at the beginning of 2009 is unclear; a connection with an actual improvement of the purity can be excluded. See here for more information.
 
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http://atlas.web.cern.ch/Atlas/GROUPS/LIQARGON/Organization/RefPlots/purity/purity_hec12A.jpg
Purity in HECl
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https://twiki.cern.ch/twiki/pub/AtlasPublic/LArCaloPublicResultsDetStatus/BARREL_longterm_6.png
 
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eps - pdf
 
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Measured impurity of the liquid argon in the end-cap cryostat on side A: Each point shows the mean of the purity values measured during one week starting middle of 2009 until beginning of 2016. Periods between pp-runs are marked gray. Data points during collisions are not taken into account due to high radiation in the calorimeter that lead to signals in the ionization chambers. Most of the monitors show charge-up effects after periods of time without high voltage. The decreasing trend in all monitors is correlated with the data taking periods. A clear explanation is not yet found, a change of other input parameters (like temperature or high voltage of the ionization chambers is excluded). See here for more information.

https://twiki.cern.ch/twiki/pub/AtlasPublic/LArCaloPublicResultsDetStatus/EMEC_HEC_A_longterm_6.png

eps - pdf

 
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Measured impurity of the liquid argon in the end-cap cryostat on side C: Each point shows the mean of the purity values measured during one week starting middle of 2009 until beginning of 2016. Periods between pp-runs are marked gray. Data points during collisions are not taken into account due to high radiation in the calorimeter that lead to signals in the ionization chambers. Most of the monitors show charge-up effects after periods of time without high voltage. The decreasing trend in all monitors is correlated with the data taking periods. A clear explanation is not yet found, a change of other input parameters (like temperature or high voltage of the ionization chambers is excluded). See here for more information.
 
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https://twiki.cern.ch/twiki/pub/AtlasPublic/LArCaloPublicResultsDetStatus/EMEC_HEC_C_longterm_6.png

eps - pdf

 

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META FILEATTACHMENT attachment="noise_mc_2015.eps" attr="" comment="LAr total noise plots (2015)" date="1453738061" name="noise_mc_2015.eps" path="noise_mc_2015.eps" size="17738" user="aleksa" version="1"
META FILEATTACHMENT attachment="noise_mc_2015.pdf" attr="" comment="LAr total noise plots (2015)" date="1453738061" name="noise_mc_2015.pdf" path="noise_mc_2015.pdf" size="27746" user="aleksa" version="1"
META FILEATTACHMENT attachment="noise_mc_2015.png" attr="" comment="LAr total noise plots (2015)" date="1453738062" name="noise_mc_2015.png" path="noise_mc_2015.png" size="79169" user="aleksa" version="1"
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META FILEATTACHMENT attachment="BARREL_longterm_6.pdf" attr="" comment="Purity plots pdf" date="1463502431" name="BARREL_longterm_6.pdf" path="BARREL_longterm_6.pdf" size="58308" user="aleksa" version="1"
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META FILEATTACHMENT attachment="EMEC_HEC_C_longterm_6.pdf" attr="" comment="Purity plots pdf" date="1463502431" name="EMEC_HEC_C_longterm_6.pdf" path="EMEC_HEC_C_longterm_6.pdf" size="43182" user="aleksa" version="1"
META FILEATTACHMENT attachment="BARREL_longterm_6.eps" attr="" comment="Purity Plots eps, png" date="1463502570" name="BARREL_longterm_6.eps" path="BARREL_longterm_6.eps" size="669126" user="aleksa" version="1"
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META FILEATTACHMENT attachment="EMEC_HEC_C_longterm_6.eps" attr="" comment="Purity Plots eps, png" date="1463502570" name="EMEC_HEC_C_longterm_6.eps" path="EMEC_HEC_C_longterm_6.eps" size="605457" user="aleksa" version="1"
META FILEATTACHMENT attachment="EMEC_HEC_C_longterm_6.png" attr="" comment="Purity Plots eps, png" date="1463502570" name="EMEC_HEC_C_longterm_6.png" path="EMEC_HEC_C_longterm_6.png" size="43789" user="aleksa" version="1"
 
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