CS to brick and track follow-up ● Cosmic ray test ● CS scanning ● CS to brick connection ●...
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Transcript of CS to brick and track follow-up ● Cosmic ray test ● CS scanning ● CS to brick connection ●...
![Page 1: CS to brick and track follow-up ● Cosmic ray test ● CS scanning ● CS to brick connection ● Track following Napoli Scanning Lab.](https://reader031.fdocuments.in/reader031/viewer/2022032523/56649d775503460f94a59fbf/html5/thumbnails/1.jpg)
CS to brick and track follow-up
● Cosmic ray test● CS scanning● CS to brick connection● Track following
Napoli Scanning Lab
![Page 2: CS to brick and track follow-up ● Cosmic ray test ● CS scanning ● CS to brick connection ● Track following Napoli Scanning Lab.](https://reader031.fdocuments.in/reader031/viewer/2022032523/56649d775503460f94a59fbf/html5/thumbnails/2.jpg)
Cosmic ray test performed in November
● Brick with CS brought out of the gallery
● Kept for about 4 minutes at the surface
● Integrating about 100 tracks on the whole surface
● Going back to the underground lab
● Attach a second CS doublet and expose to cosmic rays in the pit for 24 hours
CS doublet
Cosmic rays
![Page 3: CS to brick and track follow-up ● Cosmic ray test ● CS scanning ● CS to brick connection ● Track following Napoli Scanning Lab.](https://reader031.fdocuments.in/reader031/viewer/2022032523/56649d775503460f94a59fbf/html5/thumbnails/3.jpg)
Scanning of the cosmic-ray test bricks
● CS doublets (European part) were scanned at Gran Sasso
● After the first area scanning performed at Gran Sasso, one CSD was sent to Naples
● Enlarged the statistics (all the surface)● CSD scanning and results● CS to brick connection● Brick scan-back
![Page 4: CS to brick and track follow-up ● Cosmic ray test ● CS scanning ● CS to brick connection ● Track following Napoli Scanning Lab.](https://reader031.fdocuments.in/reader031/viewer/2022032523/56649d775503460f94a59fbf/html5/thumbnails/4.jpg)
Scanning station for 6 bricks
CS1 and CS2 scanning:● minimum number of grains = 7● “expansion” filter● fixed cutoffs● 15 layers
Up/down linking:● minimum number of grains = 7● Delta X,Y = 30 µm● Delta TX,TY = 40*(1+4*) mrad
CS1/CS2 tracking● Delta X,Y = 40 µm● Delta TX,TY = 25 mrad● N = N
CS1 + N
CS2 = 40 grains
● quality cut: SIGMA < N * 0.13 - 1.3
Napoli laboratory: brick #973
CS1 and CS2 scanning:● minimum number of grains = 7● “expansion” filter● cut-offs tuned on the CS2● 16 layers
Candidates in the CS sheets:● Delta X,Y = 120 µm● Delta TX,TY = 50 mrad
![Page 5: CS to brick and track follow-up ● Cosmic ray test ● CS scanning ● CS to brick connection ● Track following Napoli Scanning Lab.](https://reader031.fdocuments.in/reader031/viewer/2022032523/56649d775503460f94a59fbf/html5/thumbnails/5.jpg)
CS1 and CS2 scanning
![Page 6: CS to brick and track follow-up ● Cosmic ray test ● CS scanning ● CS to brick connection ● Track following Napoli Scanning Lab.](https://reader031.fdocuments.in/reader031/viewer/2022032523/56649d775503460f94a59fbf/html5/thumbnails/6.jpg)
SIGMA0 1 6. 6. .010 .010 # sigmaX sigmaY sigmaTX sigmaTYDEGRAD 1 4 # angular degradation: sig(tx) = sig(0)*(1+deg*tx)BINS 1 5 5 5 5 # bin*sigma = acceptanceCHI2MAX 1 3.5 # chi2 simpleCHI2PMAX 1 3.5 # chi2 with puls weighting (ramp used)
Up/down linking parameters: building the base-tracks
CHI2MODE 0 3SIGMA0 0 40. 40. .005 .005DEGRAD 0 4.BINS 0 3 3 5 5CHI2MAX 0 5.5CHI2PMAX 0 5.5
CS1/CS2 tracking parameters: building the doublet tracks
xy= 40µm 3 cut txty = 5mrad 5 cut
degrading with the track slope
xy= 6µm 5 cut txty = 10mrad 5 cut
degrading with the track slope
![Page 7: CS to brick and track follow-up ● Cosmic ray test ● CS scanning ● CS to brick connection ● Track following Napoli Scanning Lab.](https://reader031.fdocuments.in/reader031/viewer/2022032523/56649d775503460f94a59fbf/html5/thumbnails/7.jpg)
CS1-to-CS2 alignment with data scanned at Gran SassoCandidates for 6 european bricks
109 (102 with grains>=40) events in 16*6 = 96 cm2
6x5=30µm 3.4x5=17µm
5x5=25mrad5x5=25mrad
40 grains
x = 6µm
tx = 5mrad
![Page 8: CS to brick and track follow-up ● Cosmic ray test ● CS scanning ● CS to brick connection ● Track following Napoli Scanning Lab.](https://reader031.fdocuments.in/reader031/viewer/2022032523/56649d775503460f94a59fbf/html5/thumbnails/8.jpg)
CS1-to-CS2 alignment for brick 3000973Candidates: 93 (79 with grains>=42) events in 96 cm2
(8.6x11.1cm2)
x = 15µm y = 4µm
tx = 4mradty = 4mrad
42 grains
![Page 9: CS to brick and track follow-up ● Cosmic ray test ● CS scanning ● CS to brick connection ● Track following Napoli Scanning Lab.](https://reader031.fdocuments.in/reader031/viewer/2022032523/56649d775503460f94a59fbf/html5/thumbnails/9.jpg)
Y residuals vs. X and Y positionYCS2 - YCS1 - TYCS1*300
Y (µm)X (µm)
![Page 10: CS to brick and track follow-up ● Cosmic ray test ● CS scanning ● CS to brick connection ● Track following Napoli Scanning Lab.](https://reader031.fdocuments.in/reader031/viewer/2022032523/56649d775503460f94a59fbf/html5/thumbnails/10.jpg)
X residuals vs. X and Y position
X (µm) Y (µm)
XCS2 - XCS1 - TXCS1*300
12 cm 10 cm
![Page 11: CS to brick and track follow-up ● Cosmic ray test ● CS scanning ● CS to brick connection ● Track following Napoli Scanning Lab.](https://reader031.fdocuments.in/reader031/viewer/2022032523/56649d775503460f94a59fbf/html5/thumbnails/11.jpg)
X residuals vs. X and Y position (2D view)
mark #1
mark #2
mark #3mark #4
30 µm offset
![Page 12: CS to brick and track follow-up ● Cosmic ray test ● CS scanning ● CS to brick connection ● Track following Napoli Scanning Lab.](https://reader031.fdocuments.in/reader031/viewer/2022032523/56649d775503460f94a59fbf/html5/thumbnails/12.jpg)
Summary of CS to CS connection● After a cut on the number of grains (42 out of 64) 74
tracks remained predicted onto the brick after the extrapolation of 4700 µm
Position distribution Angle distribution
![Page 13: CS to brick and track follow-up ● Cosmic ray test ● CS scanning ● CS to brick connection ● Track following Napoli Scanning Lab.](https://reader031.fdocuments.in/reader031/viewer/2022032523/56649d775503460f94a59fbf/html5/thumbnails/13.jpg)
Data quality of films inside the brickhigh fog (>=10/1000 µm3) and Compton
Micro-tracks per viewClusters per view
3 inter-calibration areas 1cm2
~500 base-tracks/mm2 (<0.5)after quality cut ~15/mm2
![Page 14: CS to brick and track follow-up ● Cosmic ray test ● CS scanning ● CS to brick connection ● Track following Napoli Scanning Lab.](https://reader031.fdocuments.in/reader031/viewer/2022032523/56649d775503460f94a59fbf/html5/thumbnails/14.jpg)
Measured gap between CS and brick4450 µm measured value (4700 µm nominal)
220 µmcorrection
270 µmcorrection
![Page 15: CS to brick and track follow-up ● Cosmic ray test ● CS scanning ● CS to brick connection ● Track following Napoli Scanning Lab.](https://reader031.fdocuments.in/reader031/viewer/2022032523/56649d775503460f94a59fbf/html5/thumbnails/15.jpg)
CS to brick connectionposition accuracy
= 70µm = 54µm
12 cm
x (µm)
finding rate= 47/74 = (64±6)%
![Page 16: CS to brick and track follow-up ● Cosmic ray test ● CS scanning ● CS to brick connection ● Track following Napoli Scanning Lab.](https://reader031.fdocuments.in/reader031/viewer/2022032523/56649d775503460f94a59fbf/html5/thumbnails/16.jpg)
CS to brick connectionangular accuracy
= 9mrad = 12mrad
![Page 17: CS to brick and track follow-up ● Cosmic ray test ● CS scanning ● CS to brick connection ● Track following Napoli Scanning Lab.](https://reader031.fdocuments.in/reader031/viewer/2022032523/56649d775503460f94a59fbf/html5/thumbnails/17.jpg)
CS to brick connectionposition and angular distribution of candidates
validated by manual check
12 cm
9 cm
![Page 18: CS to brick and track follow-up ● Cosmic ray test ● CS scanning ● CS to brick connection ● Track following Napoli Scanning Lab.](https://reader031.fdocuments.in/reader031/viewer/2022032523/56649d775503460f94a59fbf/html5/thumbnails/18.jpg)
Connection of plate 1 to 2position accuracy
all candidates validated by manual check
x = 16µm y = 12µm
= 41/47 = (87±5)%
![Page 19: CS to brick and track follow-up ● Cosmic ray test ● CS scanning ● CS to brick connection ● Track following Napoli Scanning Lab.](https://reader031.fdocuments.in/reader031/viewer/2022032523/56649d775503460f94a59fbf/html5/thumbnails/19.jpg)
Connection of plate 1 to 2angular accuracy
all candidates validated by manual check
tx = 8.6mrad ty = 7.9mrad
![Page 20: CS to brick and track follow-up ● Cosmic ray test ● CS scanning ● CS to brick connection ● Track following Napoli Scanning Lab.](https://reader031.fdocuments.in/reader031/viewer/2022032523/56649d775503460f94a59fbf/html5/thumbnails/20.jpg)
Connection of plate 2 to 3: position accuracyall candidates validated by manual check
tx = 7mrad tx = 6.4mrad
y = 8µmx = 13µm= 39/41 = (95±3)%
![Page 21: CS to brick and track follow-up ● Cosmic ray test ● CS scanning ● CS to brick connection ● Track following Napoli Scanning Lab.](https://reader031.fdocuments.in/reader031/viewer/2022032523/56649d775503460f94a59fbf/html5/thumbnails/21.jpg)
Conclusions● 74 tracks found on the CS doublet (~ 96 cm2) but not manually
checked
● Position dependence of the X offsets
● High fog density (10/1000 µm3) on the films inside the brick
● 47 tracks found in the first plate of the brick and manually confirmed
● 65% of connecting efficiency (physics, instrumental, etc.)
● 41 tracks found on the second plate (manually confirmed)
● 39 tracks found on the third plate (manually confirmed)