5 July - 11 July 2018 (Emre Celebi)

July 5

Generally Offline histograms new runs (354944,355008,355053) are very similar to the last signed-off run (354893). One thing that I didn’t understand is we have large number of HL hits (Barrel) on track. Please find the following picture ;

canvas-3.png

This was probably due to FastOR settings.

Also we I have examined the calibration of the last run, 355053 Time residuals and residuals seems fine but I got worried with the following picture of board time differences. In fact this was okay.

Screen Shot 2018-07-05 at 3.35.47 PM.png

Calibration run 355053;

(From page 5 of the relevant calibration report)

Residual sigma ; BA: 0.127 BC: 0.127 EA: 0.130 EC: 0.129

Time residual mean ; BA: 0.088 BC: 0.131 EA: 0.180 EC: 0.108

Runs to be signed of;

354944 (ptag data18_13TeV, duration 1030.5m, 68597167 events, ATLAS Ready lumi 0.51/pb, ended Wed 08:56; calibration loop ends Fri 09:03),

355008 (ptag data18_13TeV, duration 227.3m, 23065627 events, ATLAS Ready lumi 71.63/nb, ended Wed 14:37; calibration loop ends Fri 14:43),

355053 (ptag data18_13TeV, duration 299.2m, 15243252 events, ATLAS Ready lumi 134.03/nb, ended Thu 00:28; calibration loop ends Sat 00:33):

Following HT related Barrel histograms are red due to increased HL hits counts;

https://atlasdqm.cern.ch/webdisplay/tier0/1/express_express/run_354944/run/InnerDetector/TRT/TRTB/hAvgHLOcc_A

https://atlasdqm.cern.ch/webdisplay/tier0/1/express_express/run_354944/run/InnerDetector/TRT/TRTB/hAvgHLOcc_C

https://atlasdqm.cern.ch/webdisplay/tier0/1/express_express/run_354944/run/InnerDetector/TRT/TRTB/hHLhitOnTrack

Drift time distribution for Barrel plots is yellow but plot itself seems fine

canvas-4.png

July 6-7

We have two new runs to sign off;

355109 (ptag data18_13TeV, duration 1487.7m, 284673862 events, ATLAS Ready lumi 1.70/pb, ended Fri 13:04; calibration loop ends Sun 13:23)

355181 (ptag data18_13TeV, duration 545.6m, 193945772 events, ATLAS Ready lumi 0.92/pb, ended Fri 23:54; calibration loop ends Sun 23:54)

Generally we have same features as the last few runs;

A dip ~300 degrees in phi distribution due to gas flow,

Hihger HL Hit occupancy and HL on tracks due to FastOR,

Drift time on track (Barrel and EA) histograms are yellow but seems fine,

I am signing of these runs without defect.

For the Bulk processing we have following runs, Apart from the first one (254309) they look okay, same features with the express_express except the;

354309 It was signed off with TRT_BADCALIBRATION_MINOR in the ES1. Same Features exists but with the bulk they got worse. As if the new calibration is unfit for this run;

hrtRelation_Ar2.png hrtRelation_Ar.png

hTimeResidual2.png hTimeResidual.png

The reason might be radical changes in occupancy ;

hNHitsperLB.png

I am keeping the TRT_BADCALIBRATION_MINOR. Yet I am not sure if we can recover this run with calibration.

—————

For Bulk

354826:

Almost same just xenon and argon sigmas got a bit better in the Bulk.

Signing of without defects

354863,354893,355008, 355053:

Drift time on track Hist turns yellow from green in bulk but histogram seems fine.

https://atlasdqm.cern.ch/webdisplay/tier0/1/physics_Main/run_354863/run/InnerDetector/TRT/TRTEA/hDriftTimeonTrkDist_A

Other than that almost the same, just xenon and argon sigmas got a bit better in the Bulk.

Signing of without defects

——

Calibration

355109

Barrels:

(side C) residual: 0.1264 mm T0 diff: -0.312 ns

(side A) residual: 0.1266 mm T0 diff: -0.372 ns

Endcaps:
(side C) residual: 0.1285 mm T0 diff: -0.352 ns

(side A) residual: 0.1295 mm T0 diff: -0.272 ns

355181

Barrels:
(side C) residual: 0.1267 mm T0 diff: -0.292 ns

(side A) residual: 0.1265 mm T0 diff: -0.351 ns

Endcaps:

(side C) residual: 0.1286 mm T0 diff: -0.348 ns

(side A) residual: 0.1294 mm T0 diff: -0.247 ns

July 8

We have a new run to sign off;

355224 (ptag data18_13TeV, duration 771.2m, 274162094 events, ATLAS Ready lumi 1.03/pb, ended Sat 14:03; calibration loop ends Mon 14:23)

Generally we have same features as the last few runs;

A dip ~300 degrees in phi distribution due to gas flow,

Hihger HL Hit occupancy and HL on tracks due to FastOR,

Drift time on track (Barrel and EA) histograms are yellow but seems fine,

Just one thing that gets my attention is we have slightly higher HL occupancy around BC stack 25 (It also exist in older runs). Probably not an issue here.

canvas-8.png

I signed oft this run without defect.

———————

For Bulk sign off we have the following runs;

354944

Drift time on track Hist turns yellow from green in bulk but histogram seems fine.

Other than that almost the same, just xenon and argon sigmas got a bit better in the Bulk.

Signing of without defects.

355109

Bulk processing is not finished yet.


Calibration

355224

Barrels:

(side C) residual: 0.1264 mm T0 diff: -0.305 ns

(side A) residual: 0.1265 mm T0 diff: -0.360 ns

Endcaps:
(side C) residual: 0.1286 mm T0 diff: -0.338 ns

(side A) residual: 0.1293 mm T0 diff: -0.245 ns

July 9

We have two new runs to sign off;

355261 (ptag data18_13TeV, duration 923.4m, 35323561 events, ATLAS Ready lumi 232.79/pb, ended Sun 19:04; calibration loop ends Tue 19:22)
355273 (ptag data18_13TeV, duration 486.1m, 16264470 events, ATLAS Ready lumi 227.28/pb, ended Mon 04:08; calibration loop ends Wed 04:23)

In these runs we have more occupancy than the runs before;

-- we have worse residuals;

355261 :

Barrel Xe sigma: 0.1359

Barrel Ar sigma: 0.1522

355273 :

Barrel Xe sigma: 0.145

Barrel Ar sigma: 0.1614

Example:

canvas(1).png

— Time residuals mean deviations :

run 355273 Barrel Xe: , Barrel Ar 0.6386

run 355261 Barrel Xe: , Barrel Ar 0.6386

— RT relations have some extra features;

hrtRelation_Ar3.png hrtRelation_Ar6.png

— Drift time histograms changed their shape;

Screen Shot 2018-07-09 at 2.51.26 PM.png

— In previous runs we had more HL hits on track only for Barrel. In the end cap they were consistent with the reference.

But now we have same effect in End caps also

canvas(2).png

All these changes are result of the High mu. Signed without defect.

July 10

Hello All,

Today we don’t have any new run to sign off.

Calibration:

355261

Barrels:

(side C) residual: 0.1622 mm T0 diff: -0.506 ns

(side A) residual: 0.1651 mm T0 diff: -0.555 ns

Endcaps:

(side C) residual: 0.1740 mm T0 diff: -0.503 ns

(side A) residual: 0.1771 mm T0 diff: -0.416 ns

355273

Barrels:

(side C) residual: 0.1743 mm T0 diff: -0.441 ns

(side A) residual: 0.1740 mm T0 diff: -0.494 ns

Endcaps:

(side C) residual: 0.1897 mm T0 diff: -0.339 ns

(side A) residual: 0.1938 mm T0 diff: -0.253 ns

These residuals Can be explainable by the high mu these runs have.

July 11

Today we had only one run for ES1;

355331 (ptag data18_13TeV, duration 1894.9m, 234877942 events, ATLAS Ready lumi 95.83/pb, ended Wed 05:06; calibration loop ends Fri 05:22)

This run already flagged with TRT_DAQPROBLEMS_OTHER_MINOR defect due to cluster of bad straws.

————

For the BULK we had the following five runs; 355109 355181 355224 355261 355273

355261 355273: physics_Main stream was not ready.

355109 355181 355224 : were signed off without any defects. But I noticed few things.

Firstly what is puzzling me is that we have overall increase in HL and LL occupancy in Barrel And endcaps when we move

from ES1 to Bulk.

canvas(6).png canvas(7).png

This is probably due to difference in express_express and physics_Main streams.

Secondly On the bulk we cen see that we have dip around phi 180 and a pronounced tip on phi 280.

canvas(8).png

Between the ES1 and bulk only plot gets worser flagging is the Drift time on track distribution.

Eg; I don’t see a clear degradation between these plots (First from ES1 second Bulk of the same run).

But the side band value increased from 0.1385 to 0.1403. (We flagging the value bigger that 0.14 as red)

This is probably due to different references used in this two proccesings.

canvas(9).png canvas(10).png

Calibration;

355331 (The run where we have 2 clusters of bad straws)

Barrels:

(side C) residual: 0.1327 mm T0 diff: -0.254 ns

(side A) residual: 0.1329 mm T0 diff: -0.317 ns

Endcaps:
(side C) residual: 0.1336 mm T0 diff: -0.333 ns

(side A) residual: 0.1348 mm T0 diff: -0.230 ns

-- EmreCelebi - 2018-07-18

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