[BLAST_ANAWARE] Analysis meeting on Wednesday 6/22/2005

From: Michael Kohl (kohlm@mit.edu)
Date: Mon Jun 20 2005 - 14:02:40 EDT


Hi,

last time we changed the ordering of agendas for the coming two meetings.
We will focus on Wednesday on the status kinematic corrections and will
evaluate the quality of these corrections.

-CC's approach to obtain corrected field map

-Review of "kinematical corrections" applied so far
-Momentum corrections from p(e,e'p) elastic (EG)
-Momentum corrections from p(e,e'p) elastic (CC)
-Momentum corrections from d(e,e'p) quasielastic (AM)
        
Apply to test samples hydrogen and deuterium data (say 100kC each)
Demonstrate effect on distributions and resolutions:
Plot variables pe, the, pp, thp, W, Mmiss w/ and w/o above
corrections to see the size of corrections. Also histogram the
difference of variable (before) - variable (after).

Elastic p(e,e'p): 12 Correlation and Resolution plots.
First plot one variable of below vs the calculated one (2d) and then
the difference of them (1d):
pe-pecalc(th_e), pe-pecalc(thp), pe-pecalc(pp),
pp-ppcalc(thp), pp-ppcalc(the), pp-ppcalc(pe),
the-thecalc(pe), the-thecalc(pp), the-thecalc(thp)
thp-thpcalc(pe), thp-thpcalc(the), thp-thpcalc(pp),
All above 12 2d and 1d histograms for two sectors (=24 2d and 1d
histograms) and in each histogram overlayed the result 1) without
corrections, 2) EG, 3) AM, and 4) CC.

Quasielastic d(e,e'p): 4 Correlation and Resolution plots.
First plot variable of below vs the calculated one (2d) and then the
difference of them (1d):
pe-pecalc(the,pp,thp), the-thecalc(pe,pp,thp),
pp-ppcalc(the,pe,thp), thp-thpcalc(pe,the,pp)
All above 4 2d and 1d histograms for two sectors (=8 2d and 1d
histograms) and in each histogram overlayed the result 1) without
corrections, 2) EG, 3) AM, and 4) CC.

Make available the corrections in a usable way in the new pool area.

p.s. except for Peter's there are still missing all other slides from last
     Wednesday. The location is
     blast02:/usr/local/www/html/PRIVATE_RESULTS/USEFUL/\
      ANALYSIS_MEETINGS/meeting_050615

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 | | +-------------------------------------+--------------------------+



This archive was generated by hypermail 2.1.2 : Mon Feb 24 2014 - 14:07:32 EST