Improving Charged Hadrons in CES/CPR

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Improving Charged Hadrons in CES/CPR
After charged hadron showers are simulated in
CEM/CHA, use regions and CES vs CPR data
histogram to simulate everything including
correlations
4-5 GeV
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Improving Charged Hadrons in CES/CPR
Throw random number based on 2D plot
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CPR/CES Simulation update
Bugs fixed in all inputs to CES/CPR simulation,
EM, HAD, Track P, now look
reasonable. Now working on implementing
histograms
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CPR/CES Simulation update
Sunghyun implemented as a test a 10x10 data
histogram
Low statistics test of simulation
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CPR2 Simulation update
Backup slides
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CPR2 Simulation update
Jun Suh and Sunghyun Chang are the main
developers.
Run number switch works,
gt190000 gets new detector Simulation of old
detector was only used for 1 plot!
How often does at least one of the two photons
from a ? give a 1 MIP hit?
Analyses with electrons used data for all
studies. Conversions, Pions from Ks,
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CPR2 Simulation update
These curves depend on geometry and decay
kinematics, not much more.
Geometry looks good in new simulation.
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CPR2 Simulation update
Simulation is convolution of MIP histogram with
NMIPS from Geant.


Run I Version, looks the same. Many soft brem
photons in W events could cause problem.
Typical Cut, Analyses Not Sensitive to Details
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CPR2 Simulation update

• This was declared working for photon physics in
  April, has been in use by photon group to
  determine the new pi0 background subtraction.
• After this relatively simple step, we got
  ambitious
• Decided to try to
• Improve charged hadron simulation for CPR
• Improve charged hadron simulation for CES
• Include correlations between CES/CPR/CEM/CHA
• Create the first Crack Detector simulation

10
CPR2 Simulation update
I dont have simulated plots to show Just last
week we fixed two bugs and
got numbers in CESD and CPRD Input EM and
HAD to simulation looks funny Korean group and I
have instant message meetings 2-3 times per
week, weve made steady progress since Sungyhun
went back to Korea in September
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Track Pt
Sample of Z-gtee data with 1 track in crack, used
for CCR studies and simulation.
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CCR Studies
gt95 Efficient in all Wedges
Input to simulation
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CCR Simulation
I dont have simulated plots to show Jun is
making Z-gt ee samples for checking