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SELECTION STUDIES Comparison between Ctalk, No Ctalk, first pad selected 22/05/20081Simone Brusa, INFN-Ferrara

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OUTLINE 22/05/2008Simone Brusa, INFN-Ferrara2 1.B off Aligned scenario Misaligned scenario in X: M4Aside=3mm, M4Cside=-6mm 2.B on Aligned scenario Misaligned scenario in X: M4Aside=3mm, M4Cside=-6mm Three differents possibility for each of them (in order of analisys): 1.Ctalk (big pad); 2.No Ctalk; 3.First pad selected; New geometry and the last version of Gauss, Boole, Brunel are used in all the scenarios. M1-M5 are the fixed stations.

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22/05/2008Simone Brusa, INFN-Ferrara3 X residual distributions Boff, Aligned No Ctalk first pad Ctalk

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22/05/2008Simone Brusa, INFN-Ferrara4 X residual distributions Bon Aligned Ctalk No Ctalk First pad

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22/05/2008Simone Brusa, INFN-Ferrara5 Y residual distributions Boff, Aligned Ctalk No Ctalk First pad

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22/05/2008Simone Brusa, INFN-Ferrara6 Y residual distributions Bon Aligned Ctalk No Ctalk First pad

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22/05/2008Simone Brusa, INFN-Ferrara7 X residual distributions Boff, Misaligned Ctalk No Ctalk First pad

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22/05/2008Simone Brusa, INFN-Ferrara8 X residual distributions Bon, Misaligned Ctalk No Ctalk First pad

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22/05/2008Simone Brusa, INFN-Ferrara9 Y residual distributions Boff, Misaligned Ctalk No Ctalk First pad

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22/05/2008Simone Brusa, INFN-Ferrara10 Y residual distributions Bon, Misaligned Ctalk No Ctalk First pad

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B off, Aligned, first pad, Ctalk 22/05/2008Simone Brusa, INFN-Ferrara11 M5 M4 M3

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22/05/2008Simone Brusa, INFN-Ferrara12 B on, Aligned, first pad, Ctalk M5 M4 M3

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B off, Misaligned, first pad (R1 black, R2 red, R3 green, R4 blue), Ctalk the others one in each region 1/2 22/05/2008Simone Brusa, INFN-Ferrara13

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22/05/2008Simone Brusa, INFN-Ferrara14 B off, Misaligned, first pad (R1 black, R2 red, R3 green, R4 blue), Ctalk the others one in each region 2/2

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B on, Misaligned, first pad (R1 black, R2 red, R3 green, R4 blue), Ctalk the others one in each region 1/2 22/05/2008Simone Brusa, INFN-Ferrara15

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22/05/2008Simone Brusa, INFN-Ferrara16 B on, Misaligned, first pad (R1 black, R2 red, R3 green, R4 blue), Ctalk the others one in each region 2/2

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# Of tracks comparison 22/05/2008Simone Brusa, INFN-Ferrara17 B off AlignedB off MisalignedB on AlignedB on Misaligned RegionCtalkNo Ctalk%CtalkNo Ctalk%CtalkNo Ctalk%CtalkNo Ctalk% R R R R The total number of processed tracks are not the same for all the cases

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RESULTS FROM THE COMPARISONS CaseCtalkNo CtalkFirst pad X, B off, Aligned Ok X, B on, Aligned Ok Y, B off, Aligned Ok Y, B on, Aligned Ok X, B off, Misaligned Ok X, B on, Misaligned Ok Y, B off, Misaligned Ok Y, B on, Misaligned Ok 22/05/2008Simone Brusa, INFN-Ferrara18 But I think that rebbining for the chamber dimensions in the case of Y, we can use the Ctalk (big pad) without troubles

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CONCLUSIONS I think that the best selection for us is to use the “PADONE” for several reasons: - Shape of X (Y rebbining) residual distributions -Number of tracks respect No Ctalk selection 22/05/2008Simone Brusa, INFN-Ferrara19

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