### Abstract

A first software alignment of the Inner Tracker using data from the LHC synchronization test is described. Residual plots are used to adjust the position of the Inner Tracker boxes and layers in the x-direction and to verify the correctness of the survey data. With the corrections determined in this note the position of the x-measuring ladders is known to a precision of $100~\mu$m or better.

### Plots

 T2 box residuals using the survey gif pdf T2 box residuals using the ideal geometry gif pdf Residual width versus p in the Monte Carlo gif pdf

The tarball contains :
• tex , bib and pdf of the note
• gifs and pdf of the figures
• align3.C: macro to make plot of residuals with survey geometry
• align.C: macro to make plot of residuals with ideal geometry
• itg.C: TGraph of residual width versus p
• root files needed by the macros

### Keywords

2008 IT running, TED run, alignment

-- MatthewNeedham - 07 May 2009

Topic attachments
I Attachment History Action Size Date Who Comment
gif align.gif r1 manage 13.4 K 2009-05-07 - 14:54 MatthewNeedham
gif align3.gif r1 manage 16.3 K 2009-05-07 - 13:53 MatthewNeedham
pdf def.pdf r1 manage 7.6 K 2009-05-07 - 14:53 MatthewNeedham
gz firstalignment.tar.gz r1 manage 623.9 K 2009-05-07 - 14:53 MatthewNeedham
gif itg.gif r1 manage 5.8 K 2009-05-07 - 14:33 MatthewNeedham
pdf itg.pdf r1 manage 3.9 K 2009-05-07 - 14:33 MatthewNeedham
pdf surveyed.pdf r1 manage 37.8 K 2009-05-07 - 14:22 MatthewNeedham
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Topic revision: r2 - 2009-05-07 - MatthewNeedham

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