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Rome scanning report

Rome scanning 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

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Rome scanning report

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  1. Romescanning report • After training (Brick # 1056091, ev. # 222248015from 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

  2. Upstream Slope X: 0.10450 Upstream Slope Y: -0.00981 Upstream Pos X: 2746.2 Upstream Pos Y: 16407.1 Downstream Z: -2329.3 Downstream Vtx: Downstream IP: Downstream Slope X: 0.09302 Downstream Slope Y: 0.01558 Downstream Pos X: 3154.5 Downstream Pos Y: 16485.4 SEGMENTS ID GRAINS SX SY IX IY IZ SheetID 1850 25 0.09302 0.01558 3150.5 16484.7 -2372.3 55 1930 20 0.09730 0.01043 3043.3 16443.2 -3734.9 54 3704 20 0.10450 -0.00981 2772.7 16404.6 -6343.4 52 Upstream Slope X: 0.08768 Upstream Slope Y: 0.01983 Upstream Pos X: 2324.4 Upstream Pos Y: 16343.0 Downstream Z: -6300.4 Downstream Vtx: Downstream IP: Downstream Slope X: 0.08183 Downstream Slope Y: -0.00262 Downstream Pos X: 2771.4 Downstream Pos Y: 16406.0 SEGMENTS ID GRAINS SX SY IX IY IZ SheetID 3703 20 0.08183 -0.00262 2767.9 16406.1 -6343.4 52 2160 22 0.09603 0.01384 2666.3 16403.2 -7670.4 51 1970 20 0.05997 -0.00372 2569.0 16379.9 -8983.7 50 1789 27 0.08768 0.01983 2346.6 16348.0 -11658.6 48

  3. Romescanning report • 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. #4PosX 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. #8Pos 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 -1553.0 Tks IP: 9÷30 μm Ankara / OPERA Meeting – Rome report – Apr 2nd, 2009

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

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