Vitaliy,
one thing comes to my mind. We increased the low-momentum cutoff to
150MeV/c (=proton kinetic energy of 12 MeV). Assuming 50MeV/c tolerance
to account for resolution effects, means 200 MeV/c (or 21 MeV).
Supposedly a proton track with kinetic energy < 25 MeV is likely not
assigned to a track, but may still be recognized as a neutron when it
still fired a neutron counter and no ToF.
Regards,
Michael
On Tue, 28 Sep 2004, vitaliy ziskin wrote:
> To back up my point. I include a picture of an unpol hydrogen runs
> normalized to charge. These data sets have different runs in them since
> no all hydrogen runs have been recrunched. In black is the latest
> recrunch and in read is the data before the recrunch. Do I need to say
> anything else. What went wrong?
>
>
> Vitaliy
>
>
> vitaliy ziskin wrote:
>
> > Well, for whatever it is worth, the recrunched hydrogen runs show a
> > huge increase in the "neutron" rate, factor of 2.5 where as neutron
> > yield increased by about 1.5 probably mostly due to misidentified
> > "protons". I now even see a nice missing mass peak in the hydrogen
> > runs. Is it possible that we are no assigning more hits to the
> > neutron detector than before or not assigning enough to the tofs. Or
> > maybe bats somehow get in the way. Please... I need your help.
> > Cheers,
> > Vitaliy
> >
> > Chris Crawford wrote:
> >
> >> hi eugene,
> >> you can always do a joint analysis from dst and raw data. just open
> >> both filetypes together, and loop through them in sync.
> >> --chris
> >>
> >> Eugene J. Geis wrote:
> >>
> >>> lrd is not generating new lr-#### ntuples as well as flr and dst? I
> >>> notice none
> >>> in the recrunch directory. Is there potentially a new entry with
> >>> all wire
> >>> chamber hits per event regardless of a link to a track? Could be quite
> >>> important for the neutrons... -eg
> >>>
> >>>
> >>> Quoting Michael Kohl <kohlm@mit.edu>:
> >>>
> >>>
> >>>
> >>>> Vitaliy,
> >>>>
> >>>> Chi mentioned to me that in this BlastLib version the dst header
> >>>> information is not copied over. Maybe this is related to your
> >>>> problem?!
> >>>>
> >>>> Look at the yields for each spin state separately if your asymmetries
> >>>> are inconclusive.
> >>>>
> >>>> Regards,
> >>>>
> >>>> Michael
> >>>>
> >>>>
> >>>> --
> >>>>
> >>>> +-------------------------------------+--------------------------+
> >>>> | Office: | Home: |
> >>>> |-------------------------------------|--------------------------|
> >>>> | Dr. Michael Kohl | Michael Kohl |
> >>>> | Laboratory for Nuclear Science | 5 Ibbetson Street |
> >>>> | MIT-Bates Linear Accelerator Center | Somerville, MA 02143 |
> >>>> | Middleton, MA 01949 | U.S.A. |
> >>>> | U.S.A. | |
> >>>> | - - - - - - - - - - - - | - - - - - - - - -|
> >>>> | Email: kohlm@mit.edu | K.Michael.Kohl@gmx.de |
> >>>> | Work: +1-617-253-9207 | Home: +1-617-629-3147 |
> >>>> | Fax: +1-617-253-9599 | Mobile: +1-978-580-4190 |
> >>>> | http://blast.lns.mit.edu | |
> >>>> +-------------------------------------+--------------------------+
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>> --------------------------------------------------------------------------
> >>>
> >>> Eugene Geis
> >>> PhD Student, Physics Department, ASU
> >>> Research Affiliate, MIT-Bates Laboratory of Nuclear Science
> >>> eugene.geis@asu.edu
> >>> --------------------------------------------------------------------------
> >>>
> >>> -------------------------------water is
> >>> good------------------------------
> >>> --------------------------------------------------------------------------
> >>>
> >>> ** Check Out the Phatty Acidz @ http://www.phattyacidz.com **
> >>>
> >>>
>
>
--+-------------------------------------+--------------------------+ | Office: | Home: | |-------------------------------------|--------------------------| | Dr. Michael Kohl | Michael Kohl | | Laboratory for Nuclear Science | 5 Ibbetson Street | | MIT-Bates Linear Accelerator Center | Somerville, MA 02143 | | Middleton, MA 01949 | U.S.A. | | U.S.A. | | | - - - - - - - - - - - - | - - - - - - - - -| | Email: kohlm@mit.edu | K.Michael.Kohl@gmx.de | | Work: +1-617-253-9207 | Home: +1-617-629-3147 | | Fax: +1-617-253-9599 | Mobile: +1-978-580-4190 | | http://blast.lns.mit.edu | | +-------------------------------------+--------------------------+
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