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

Throw random number based on 2D plot

Improving Charged Hadrons in CES/CPR

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…

CPR/CES Simulation updateSunghyun implemented as a test a 10x10 data histogram

Low statistics test of simulation

CPR2 Simulation update

Backup slides

CPR2 Simulation update

Jun Suh and Sunghyun Chang are the main developers. Run number switch works,

>190000 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, …

CPR2 Simulation update

These curves depend on geometry and decay kinematics, not much more.

Geometry looks good in new simulation.Z

0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 1 4 7 10 13 16 19 22 25 28 31 34 37 40 43 46 49 52 2 5 8 11 14 17 20 23 26 29 32 35 38 41 44 47 50 53

Pad numbers for CPR2. These are the same for the east and west sides.

Simulation is convolution of MIP histogram with NMIPS from Geant.

CPR2 Simulation update

+

= Run I Version, looks the same. Many soft brem photons in W events could cause problem.

Typical Cut, Analyses Not Sensitive to Details

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:

1) Improve charged hadron simulation for CPR

2) Improve charged hadron simulation for CES

3) Include correlations between CES/CPR/CEM/CHA

4) Create the first Crack Detector simulation

CPR2 Simulation update

CPR2 Simulation update

I don’t 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, we’ve made steady progress since

Sungyhun went back to Korea in September

Sample of Z->ee data with 1 track in crack, used for CCR studies and simulation.

Track Pt

CCR Studies

>95% Efficient in all Wedges

Input to simulation

CCR Simulation

I don’t have simulated plots to show…

Jun is making Z-> ee samples for checking