RomeRome scanning reportscanning report

• After training (Brick # 1056091, ev. # 222248015 from Salerno: relocated), 4 bricks assigned - 3 in this report

[1 more assigned >3 weeks ago, developed 2 weeks ago, then on plastic support, finally delivered lastr friday…]

Brick 22943 – Ev. 2375449087- 2 tracks from CS (seem to cross rather downstream!):

# 26 slopes -0.001, 0.039 () NOT relocated in automatic search # 1 “ 0.186, 0.155 relocated in pl. 57 - scan-back: track #1 lost since pl. 56 - volume scan: track confirmed in pl. 57, then stop and no vertex - manual check: found as a nice micro-track only! good vertex (i.p. ~5 m @ 600 m below glass!) with the track #1 tr. # px py sx sy Npt 1 64376.3 59164.6 0.1820 0.1355 28 (autom.) 26 64225.4 59060.3 impact in base/glass side (manual) 1 64339.9 59137.2 “ “ “ “

- Clean “QE” topology in the apparatus

- Companion track with consistently high granularity in both CSd (Npt 29/30) and pl 57 (Npt 28)

Our 1st event, will be published soon… (A. Ruggieri taking care)

Brick 119500 – Ev. 236860369 [close-to-edge scanning, high fog...]

- not found in CSd (-0.090, 0.248), just one track available (0.105, 0.029) > relocated in pl. 56, scanned-back to pl. 50 (not very effective: 4/7 found) > volume-scan performed pl. 55 -> 45

Results (see next slide): - bad alignment of plate 53; - good volume track in plates 57-52, then the scan-back track seem to split into another closeby path - the new path: 52-48 with only one pl. missing (49), then stop - no vertex @ stop point, no around...

... Likely to besearched for in the next brick on the side! (Cross-check in progress in Salerno)

Ankara / OPERA Meeting – Rome report – Apr 2nd, 2009

Upstream Slope X: 0.10450Upstream Slope Y: -0.00981Upstream Pos X: 2746.2Upstream Pos Y: 16407.1Downstream Z: -2329.3Downstream Vtx: Downstream IP: Downstream Slope X: 0.09302Downstream Slope Y: 0.01558Downstream Pos X: 3154.5Downstream Pos Y: 16485.4SEGMENTSID GRAINS SX SY IX IY IZ SheetID1850 25 0.09302 0.01558 3150.5 16484.7 -2372.3 551930 20 0.09730 0.01043 3043.3 16443.2 -3734.9 543704 20 0.10450 -0.00981 2772.7 16404.6 -6343.4 52

Upstream Slope X: 0.08768Upstream Slope Y: 0.01983Upstream Pos X: 2324.4Upstream Pos Y: 16343.0Downstream Z: -6300.4Downstream Vtx: Downstream IP: Downstream Slope X: 0.08183Downstream Slope Y: -0.00262Downstream Pos X: 2771.4Downstream Pos Y: 16406.0SEGMENTSID GRAINS SX SY IX IY IZ SheetID3703 20 0.08183 -0.00262 2767.9 16406.1 -6343.4 522160 22 0.09603 0.01384 2666.3 16403.2 -7670.4 511970 20 0.05997 -0.00372 2569.0 16379.9 -8983.7 501789 27 0.08768 0.01983 2346.6 16348.0 -11658.6 48

RomeRome scanning reportscanning report

Ankara / OPERA Meeting – Rome report – Apr 2nd, 2009

Brick 73782 – Ev. 230773895

- 5 tracks from CSd (seem to cross rather downstream!) - 4/5 relocated in pl. 57, all lost in pl. 56! - …volume scan done…

CS Cand. #7 (μ) Pos X Pos Y Slope X Slope Y CS proj. 26971 55503 0.050 0.010 Found 26983 55486 0.057 0.034 24 g

CS Cand. #4 PosX Pos Y Slope X Slope Y CS proj. 26529 54770 -0.189 -0.420 Found 26612 54844 -0.189 -0.382 27 g

CS Cand. #5 Pos X Pos Y Slope X Slope Y CS proj. 26668 55194 -0.175 -0.186 Found 26657 55206 -0.144 -0.156 20 g

CS Cand. #8 Pos X Pos Y Slope X Slope Y CS proj. 26505 56168 -0.212 0.350 Not found

CS Cand. #9 Pos X Pos Y Slope X Slope Y CS proj. 26573 56417 -0.201 0.540 Found 26605 56280 -0.198 0.589 24 g

Indeed, another good vertex “just downstream” plate 56…! (will be published soon, with the previous one)

Vtx: x 26900.3 y 55430.1 z -1553.0Tks IP: 9÷30 μm

RomeRome scanning reportscanning report

Ankara / OPERA Meeting – Rome report – Apr 2nd, 2009

Summary

Out of the 3 events digested, 2 vertices located (μ attached)

Both very downstrean (lead between pl. 56 and 57)…

The 3rd event is likely to demand the extraction of the neighbour brick

About to start the one just arrived: but we wish “continuous feeding” of the scanning job

could afford to scan 2-3 bricks /week right now (1 microscope, 2 INFN technicians, looking for students; plate exchanger not installed, not yet “essential”)

Hope to get more fun in the near future, with a bit more upstream vertices……. Like the one borrowed from Salerno for training (thanks a lot to Cristiano and Regina

for their support in the learning phase!)

Brick # 1056091 – Ev. # 222248015 – located in Salerno, re-located in Rome