1055424

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General Informations (FILL ONLY THE MISSING PART - DO NOT ADD HERE TEXT)

- Brick: 1055424
- Event: 227911593
- Type: Muon

- Person: Thomas
- Mic: 1
- camera exposure time: 1/value
- light level: 28200
- cutoff 0: 1100
- cutoff 1: 950

- Analysis Follower of the OPERA Experiment
- Event Viewer
- Vertex View

Muon Informations: (to be edited)
Momentum: 8.129 GeV/c
TX: -0.097
TY: -0.044

Marks, corners

Corners: -910.3, -93.1 125082.2, 98144.3

Marks: 8943.3, 10041.0 9665.7, 90336.2 115032.7, 89440.1

STATUS: Scanforth TotalScan .... in progress

Not needed, only 2 prong vertex, followed via Scanback

VERTEX INFOS (FILL ONLY THE MISSING PART - DO NOT ADD HERE TEXT)

 VERTEX IN PLATE 22 WITH 2 PRONGS:  X  Y  Z  Prob
 see http://lheppc46.unibe.ch/lheppc56/MICROSCOPE1/ONLINE/b055424/plots/vertex_info.jpg

Prediction (FILL ONLY THE MISSING PART - DO NOT ADD HERE TEXT)

Muon:   ID X Y TX TY 0 or MISSING -> take this value from the EventViwer (TT hits in detector)
others: ID X Y TX TY 0

2 predictions in pl057:

      4    89365.20    52800.91  -0.0960  -0.0487 0 muon
      6   110216.47    68051.12   0.3363   0.2593 0

2 have been found in pl057 till 21:

      4    89378.30    52777.88  -0.0883  -0.0514 0 muon
      6   110023.06    67878.93   0.3346   0.2590 0

Loogbook

Start: 2008-09-30, 11:00 Scan started on Mic1, tresholds too high, thus changed

First plate 57 to 47 calibration area scanned, afterwards prediction scan. Both predictions are followed. From their slopes a merging around plate 20 is likely...

Started Calibration Area Scan overnight

Stopped around 8pm, seperator on stage. Restart at 10am, also calibration was performed, plate 42 is not aligned, rescanned, problem with optical mark 2 (dustspot found instead of real mark)

Stopping Point found between Plate 21 and 20. No volume Scan over night, as optical mark search for plate 17-21 is a nightmare :)

Totalscan done, vertex (2 prong) localized, but last 3 segments of sb 6 missing, as data of plate 24 is bad.. possible loss of information, rescan plate 24 and realign, now bt in plate 24 found, but still missing in plate 23, so rescan plate 23 and sb-track 6 was found.

End: 2008-09-03, 14:54

Problems and Infos

- Stickiness of emulsion, even with special threatment seperator "glued" on emulsion, thus several times emulsion plus seperator below on stage

- Optical Marks findings, every 5 plates one or more optical marks are mimiced by dust/black spots -> Bad Alingment/usually peak 0(40+) and here no peak are small value only, can be recovered by rescanning and manual checking the marksset initializing -> suggestion: save 3 mark images to easily check after overnight calib-zone scanning

- Plate 24 makes problems in totalscan, changed treshold from 1100/950 to 1000/900 and later on 950/800

DB Publication

Operation: 5000000003560016, start time: 03-OCT-08, notes: Calibration

Operation: 5000000003560315, start time: 03-OCT-08, notes: Prediction

Operation: 5000000003560426, start time: 03-OCT-08, notes: Volume