1. Mapper Software -Update Jaewon Park University of Rochester Mapper software working group Meeting, Nov 29, 2007

2. 2 Fit with Lorentzian  Single Lorenzian is more saf e. Try to extract strip position fr om fit peak position. Misbehaving fit will affect pe ak position.  Expect correlation between o ther fit parameter Longitudinal position index chi2 p2 p1 p0 Green, blue cures have symmetric data points

3. 3 Scanned strip position Slope is roughly consta nt. Strip position

4. 4 It has some odd points Over slope is different  Physically very unlikely If adjacent strips are curvy, t hey will tend to be curvy par allelly. Longitudinal position index chi2 p2 p1 p0

5. 5 Longitudinal position index Gaussian+Lorenzian fit ---- dashed curve Compare with Gaussian+L orenzian fit result. G+L fit sometimes fails. If it doesn’t fails, it gave b etter peak position. Odd points got better. Looks more parallel. G+L fit gave worse atten uation curve. Is it real? Green = strip11 Blue = strip12

6. 6 Subrange fit Fit G+L with two midd le points excluded Single Lorenzian G+L G+L (subrange)

7. 7 Compare singl e Lorenzian w ith G+L for tai l-fit. Single Lorenzi an G+L (subrange) Single Lorenzian (subrange)

8. 8 Signle Lorenzian fit

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10. 10 G+L fit

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