[BLAST_ANAWARE] minutes reconstruction mtg 11/07, agenda next meeting (11/14)

From: Tancredi Botto (tancredi@lns.mit.edu)
Date: Mon Nov 10 2003 - 20:05:09 EST


Sorry for the delay. Here are the minutes and an agenda for next time.
I assume we'll still meet on friday at 10 am, next to the counting bay.

regards,
tancredi

-------------------
_ New code version:
        _ chris
                _ eff in run 707 : 27 out 83 lost
                _ Need better cal file
                _ Question about stubs and segments having to perfectly line up in nsed.
                  They do not (if not pointing at target?) Seems understood.
        _ chi
                _ analyzed 12 runs, only one seg fault (2085).
                _ About eff: you may lose hits passed to newton due to be calib
        _ Expect v3 tag soon

_ Reconstruction accuracy:
        _ Extracting a calibration file is an involved (iterative) procedure
        _ still need to see effect of cal file on this year's runs
        _ need manpower. Currently only WX directly involved.
        _ Doug showing t0 change. Investigating but rms is very small (5 ns) and should
          not affect us much.

_ Geometry
        _ aron
                _ TBLWch1Wire::Pos in wire-cal assumed ideal wch position,
                  not consistent, introduces a small correction
        _ TVector3 and TBLVector. Remove latter ?
        _ Libblast use of rotations (L2B and B2L) seem fine

_ Misc
        _ Need better analysis/evaluation of reconstruction efficiency/issue.
        _ Be selective on wire hits, stub types.
        _ Add statistics stub types, # of segments for improved online monitor
        _ Chi: ok, but only used at preliminary level. It is the hits the matter in
          the final fit.

-------------------------
Next meeting

        _ v3 results for 700's
        _ cal file from wang
        _ DST: status and addons

------------------------

-- 
________________________________________________________________________________
Tancredi Botto,  		phone: +1-617-253-9204  mobile: +1-978-490-4124
research scientist		MIT/Bates, 21 Manning Av    Middleton MA, 01949
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