FITPI

FITPI


23 Oct 2003: Zpi-Zmu in bins of Tmuav for piscat triggers for runs 50000-50218 for double-pulse fits only with ipiflg=0

24 July 2003: Code for TDFOOL results of 2P fit when 3P fit was done. ntlimits.F p2_td.cmn setup_td.F

22 July 2003: Code for reclassifying RFLAG=4 events. fitpi4.F tdcuts.F tdfcut.cmn

31 oct 2002: Final version of technote. "FITPI: Triple-pulse fitting and other modifications" .E949 Technote K-029

28 oct 2002 Fourth draft of technote. "FITPI: Triple-pulse fitting and other modifications" .28 oct 2002 version Postscript document (gzipped)

16 oct 2002 Third draft of technote. "FITPI: Triple-pulse fitting and other modifications" 16 oct 2002 version Postscript document (gzipped)

10 oct 2002 gzipped tarball of code updated since 7oct02. recursive calls removed.(gzipped)

Second draft of technote. "FITPI: Triple-pulse fitting and other modifications" 10 oct 2002 version Postscript document (gzipped)

7 oct 2002 tarball of updated code (gzipped)

First draft of technote. "FITPI: Triple-pulse fitting and other modifications" 7 oct 2002 version Postscript document (gzipped)

FITPI studies

Cut optimization, discussion of saturated pulses and L1.1 added. See pages 21-26. 3 oct 2002 version Postscript document (gzipped)

Pedestal, DEVCAL, FITPI3 features, preliminary FITPI4 results (details added after 22 August 2002 video meeting): 23 aug 2002 version Postscript document (gzipped)

Pedestal, DEVCAL, FITPI3 features, preliminary FITPI4 results: 22 aug 2002 version Postscript document (gzipped)

Pedestal, DEVCAL, FITPI3 features: 14 aug 2002 version Postscript document (gzipped)

Pedestal, DEVCAL6 aug 2002 version Postscript document (gzipped)

25 July 2002: Study of piscat events

  1. Selected piscat triggers. L1.1 NOT applied.

  2. From the area method, 20% of pi->mu,nu can't be resolved

  3. Loss of TD pulse due to strange fiducial pulse for 2 TD channels.

    I modified TD2FID and recovered 1.2% of events.

    Examples of strange fiducials for TD channels 150 and 212 in run 50210. Channels 149 and 211 shown for comparison. Use seascape to view the postscript files. Event 317, 369, 451, 511, 557, 682, 750, 855 and the slightly more bizarre event 926.

    Table of FITPI results before and after modification to TD2FID:
    BEFORE AFTER
    OK 70.3(1.4)% 76.7(2.3)%
    no pi->mu,nu 25.5(1.3)% 21.6(2.2)%
    sat. pulse 2.4(0.4)% 1.2(0.6)%
    no pulse 1.8(0.4)% 0.6(0.4)%
    Total events 1144 343

  4. Inability to find prompt pulse due to pre-prompt activiting in stopping layer (~1% loss)
    In this example, the prompt time is near the large central pulse.

  5. Two post-prompt pulses confuse 2 pulse fitter
    Example

  6. Z-corrected TD shape has negative bins. It is unclear how this feature affects the fit.
    Under investigation.