Report of extended tehnical stop activity and

Barrel HW alignment

This project is supported by the Hungarian National Research Fund (OTKA) No.: NK67974

Szillási Zoltán on behalf of the HW Muon Alignment Group

(ATOMKI,Debrecen)

Muon Barrel Workshop, February 24, 2011.

Outline

• LinkDisk repositioning

• Z-study of the Barrel

• (very) preliminary data on the startup barrel geometry based on HW Ali

2011.02.24. Muon Barrel WorkShop 2

LinkDisk realignment

• Jan 6:– LV problems in both endcaps until 15.30

• LOTO problem: cause/person still unknown… under investigation from LV team

– Adjust LD-• Four AR lines get to YE-1 TPs

– Fixed two link electronic boards• One ELMB for BD- and one Power Card in YB-2 for line -315

• Jan 7:– Test insertion of ½ T1: near-side– 10:30 LD- moves again!

• See next slide• LD- has unwanted friction

– Test SLM lines in YE-: everything OK– 16:30 Realign LD- again– Loose LV: no more readout

HW Interventions in January 2011 (from Gervasio)

2011.02.24. Muon Barrel WorkShop 4

• Jan 7:– REALIGNED LD- (a second time) in the afternoon

• Jan 8:– Test SLM lines again in YE-: everything OK

• Jan 10:– No LV, CMS wide: no more readout

• Jan 14-18:– T1+ installation– NO LV, no readout of LD+ or SLM+

HW Interventions in January 2011

2011.02.24. Muon Barrel WorkShop 5

• LD-– Four AR lasers reach YE-1 after final adjustment Jan 7

• Link electronics– Apparently both fixes went OK: no more crashes so far

• SLM-– All SLMs go across both both T1 halves

• Line SLM 1-4 in YE-3 was temporarily blocked, so this one not really tested but suspect OK

• LD+ and SLM+– All T1 installation happened with no LV: no readout

• CMS chose to take this risk a few months back

– Can only hope we will find everything OK when LV is restored

State after Jan 7

Positive side has been tested since and it is OK

2011.02.24. Muon Barrel WorkShop 6

• LD-– Four AR- lasers reach YE-1 at 0 T– Four AR- lasers reach YE-1 at 3.8 T !!! – Reco of Link at both ends now possible at 0T and 3.8T

• See status talk

• Link electronics– ELMB in YB0 still causes problems (we need to run

continuously for several days for the card to send errors)• This is completely transparent for Link: our data taking script simply

reinitializes the card when this happens with zero impact on link data

– The YB-2 problem was serious but this was fixed fine

State NOW

2011.02.24. Muon Barrel WorkShop 7

AR- lasers YE-1 @ 3.8T

2011.02.24. Muon Barrel WorkShop 8

LD- readjustment•Since yesterday (2011.02.10) we are at Full Field back again: B=3.8T

•Our distancemeters indicate a good closing of the detector:

+ Side 0T (Jan 2010)

3.8T (March 2010)

3.8T (august 2010)

0T (Jan.2011)

3.8T (Feb.2011)

195º (mm) 94.88 78.63 78.44 93.09 78.92

315º (mm) 94.95 78.47 78.28 92.99 78.77

75º (mm) 95.83 79.72 79.57 94.00 80.06

- Side 0T (Jan 2010)

3.8T (March 2010)

3.8T (august 2010)

0T (Jan.2011)

3.8T (Feb.2011)

195º (mm) 93.58 79.57 79.18 90.33 77.42

315º (mm) 93.17 76.50 76.31 90.24 76.84

75º (mm) 93.24 76.65 76.42 90.34 76.90

Asymmetry after incident Symmetry recovered!

(from Celso)

2011.02.24. Muon Barrel WorkShop 9

Z-study of the Barrel YB±2 wheels after the magnet ramp (Noemi Beni)

Z movement of YB±2 2011 long

YB-2 YB+2

15°

75°

135°

195°

255°

315°

15°

75°

135°

195°

255°

315°

Movements of the Z-bar LEDs in the Z direction.

Ref 3888 @0T (range 2011. Feb 03-21)

1.5mm

1.1mm

1.5mm

2mm

2.6mm

2.5mm

2mm

1.5mm

1.5mm

1.5mm

2.4mm

2.1mm1T2T

3.8T

1T2T

3.8T

0T0T 0T 0T

Something new!!!2011.02.24. Muon Barrel WorkShop 11

Phi movement of YB±2 2011 long

YB-2 YB+2

15°

75°

135°

195°

255°

315°

15°

75°

135°

195°

255°

315°

Movements of the Z-bar LEDs in the Phi direction.

Ref 3888 @0T (range 2011. Feb 03-21)

0.2mm

0.2mm

0.3mm

0.1mm

0.4mm

0.1mm

0.2mm

0.1mm

0.1mm

0.5mm

0.5mm

0mm

1T2T 3.8T

0T

1T2T

3.8T

0T 0T0T

2011.02.24. Muon Barrel WorkShop 12

Z movements in mm

MAB name 3/1 3/3 3/5 3/7 3/9 3/11

Pos in Phi 15° 75° 135° 195° 255° 315°

2010 Feb. YB-2 3 1.5 2 3.8 5.8 5.2

YB+2 2.5 1.8 1.5 1.8 2.8 2.2

2010 Oct. YB-2 1.6 1.2 1.5 2 2.6 2.5

YB+2 2 1.6 1.5 1.5 2.4 2.2

2011. Feb. YB-2 1.5 1.1 1.5 2 2.6 2.5

YB+2 2 1.5 1.5 1.5 2.4 2.1

Z-movement of YB±2 are compatible with the last magnet cycleno long term (~2months) relaxation effect is seen

2011.02.24. Muon Barrel WorkShop 13

Phi movements in mm

MAB name 3/1 3/3 3/5 3/7 3/9 3/11

Pos in Phi 15° 75° 135° 195° 255° 315°

2010 Feb. YB-2 -1 -0.4 +0.5 +1 +0.7 -0.7

YB+2 -0.2 +0.3 +0.4 -0.1 -0.5 -0.6

2010 Oct. YB-2 -0.2 0 +0.2 +0.4 +0.15 -0.35

YB+2 -0.1 +0.28 +0.15 -0.15 -0.5 -0.45

2011. Feb. YB-2 -0.2 0 +0.2 +0.3 +0.1 -0.4

YB+2 -0.1 +0.2 +0.1 -0.1 -0.5 -0.5

Phi-movement of YB±2 are compatible with the last magnet cycleno long term (~2months) relaxation effect is seen

2011.02.24. Muon Barrel WorkShop 14

Phi movement of YB±2 2010 & 2011

Interpretation of the measured data:

15°

75°

135°

195°

255°

315°

YB+2

15°

75°

135°

195°

255°

315°

YB-2

• from Phi displacement plot• the arrows don’t show absolute values• the arrows are the same for the last magnet ramp up in 2010 and 2011

2011 first & 2010 last2010 first

2011.02.24. Muon Barrel WorkShop 15

Z movement 2010 & 2011

315°

YB+1YB+2 YB0 YB-1 YB-2

View from Near side75°

15°

YB+1YB+2 YB0 YB-1 YB-2

View from Far side

135°

195°

255°

• from Z displacement plot• the arrows don’t show absolute values• the arrows are the same for the last magnet ramp up in 2010 and 2011

Interpretation of the measured data: 2011 first & 2010 last2010 first

2011.02.24. Muon Barrel WorkShop 16

(very) preliminary data on the initial 3.8T geometry of the Barrel

”Missing” chambers

New dataset from run No 3981 (2011.02.13. 10:36-13:02) has been choosen.

Measurement is coordinated with the Link and EndCap

Only qualitative results yet!

2011.02.24. Muon Barrel WorkShop 18

3981 vs 2800 (blessed)

Translation magn 200x Rotation magn 200x

(thanks to Aysen!!!)

Known probem (can be cured)!Due to a missing MAB

Somethingin 2800?

New problem! To be checked

2011.02.24. Muon Barrel WorkShop 19

3981 vs 2800 (blessed)

YB-2

YB+2 YB+1

YB-1 YB0

Translation magn x200 Rotation magn x200

Missing MAB +1/9

Plans

• Finalize 3981 asap and bless

• Comparision of relative movements of 3.8T-0T wrt Survey is ongoing – our results are foreseen in a week

• APE analysis started (see Gervasio’s talk)

2011.02.24. Muon Barrel WorkShop 21

22

Conclusions

• LinkDisk repositioning went well

• Z-study of the Barrel – no long term relaxation seen

• (very) preliminary data on the startup barrel geometry based on HW Ali – minor differences seen wrt. 2800

Backup slides

Recall of blessing 2800

”Missing” chambers

Wheel/Sector/Station• -2/11/4• -1/13/4• -0/14/4• +1/7/4 Can’t measure any LED (communication problem with chamber).• +2/1/2 Can’t measure any LED (communication problem with chamber).• +2/1/4• +2/2/4• +2/4/4

The following are left uncorrected due to bad fit from Luca:• Wheel -2 Sector 5 MB4• Wheel 0 Sector 13 MB4

Comparison 2800 vs 1125

Translation magn 200x Rotation magn 200x

(thanks to Aysen!!!)

Known probem!Due to a missing MAB

Real thing?

2011.02.24. Muon Barrel WorkShop 26

2800 vs 1125

YB-2

YB+2 YB+1

YB-1 YB0

Translation magn x200 Rotation magn x200

Missing MAB +1/9

Measured only from one side

Strange chambersIn RPhi or Z• Wheel +2 Sector 11 MB4

– Problem with the camera calibration: +2/10 4EXT L, CamId: 81, SensorAngY=3.78 deg

• Wheel 0 Sector 10 MB1 Fork 3 6side Fork 4 4side are missing• Wheel 0 Sector 10 MB3 Fork 3 6side Fork 4 4side are missing• Wheel +1 Sector 10 MB2 Fork 1 6side, Fork 2 6side 4LED, F3 6side, F4 4 side are missing• Wheel +1 Sector 10 MB4 Fork 1, F2, F3 6side, F4 4side are missing• Wheel +1 Sector 1 MB3 Fork3 6side and Fork4 4side are missing, Fork4 6side bad• Wheel -1 Sector 1 MB1 Fork 2 6 side 3 LED missing• Wheel -1 Sector 3 MB4 Fork 1 6side 2 LED, 4side 2LED are missing, F2 bad• Wheel -1 Sector 3 MB3 Fork 1 4side 2 LED missing, F2 bad

In R or rootZ (global)• Wheel -1 Sector 1 MB3 (chimney chamber) Fork 1 6side, Fork 2 missing• Wheel 0 Sector 2 MB1 Fork 2 is bad, (see next slides)

2011.02.24. Muon Barrel WorkShop 28

Comparison 2800 vs 1125

Translation magn 1000x Rotation magn 1000x

This is just to show that there are micro movements…

2011.02.24. Muon Barrel WorkShop 29

2800 vs 1125

YB-2

YB+2 YB+1

YB-1 YB0

Translation magn x1000 Rotation magn x1000

Z-bar measurements on YB±2

ZLED1

ZLED2

ZLED3

ZLED4

ZLED5

ZLED6

IP

ZLED1

ZLED2

ZLED3

ZLED4

ZLED5

ZLED6

Camera local X

Cam

era

local Y

+φCMS

on posZ side+φCMS

on negZ side +ΔX -ΔX -ΔY

YB+2

+Δφ -Δφ to IP

YB-2 -Δφ +Δφ to IP

+

+YB moves (with MAB) instead of Zfork(changes sign in φ, but not in Z due to an other trafo.)

What camera observes:‘Real’ life:

2011.02.24. Muon Barrel WorkShop 31