Run 8 BTOW Calibration (2008)

Under:

 2008 BTOW calibrations 

  1. BTOW HV used in 2008 are in the file »

Isolation cut, rejection and efficiency versus cut value

Abstract:  We show what isolation cut is needed to obtain a given pi0 rejection power in each pT bin.
 

1.0 MC Event Sample

  1. Pythia event sample (pibero's gamma trees) w/ proper weighting for partonic pT bins
  2. No offline trigger simulation
  3. full EEMC acceptance

2.0 Definition of Isolation Cut

We use an isolation cut, which consists of correcting the ET of the tower which contains the photon candidate based on the position of the candidate within the tower, and dividing that corrected ET by the sum of all towers w/in R < 0.3.  The following links summarize the method.
  1. See Checking the isolation cut vs pythia events for definition of the 1-tower isolation cut and evaluation of rejection versus efficiency based on pythia events.
  2. See Isolation cut, data vs. MC, take 3 for data vs MC comparison, including trigger simulation.
The links above show plots of rejection power vs. efficiency.  It is informative to plot rejection vs. applied cut, and efficiency vs. applied cut.  See figure 1 below.
 
Figure 1 -- Rejection power (red) or photon efficiency (black) vs. isolation cut.
 

2008.08.19 Shower shape from pp2008 vs pp2006 data

Ilya Selyuzhenkov August 19, 2008

Data sets:

20080819_ppSet20080819_pp08__40stripsPP08_showerShapes_meanE_vStrip_noPt1CutnoPt2Cut_noPi0Cuts_scalePeak_logy

20080819_ppSet20080819_pp08__40stripsPP08_showerShapes_meanE_vStrip_noPt1CutnoPt2Cut_noPi0Cuts_scalePeak_logy

20080819_ppSet20080819_pp08__40stripsPP08_showerShapes_meanE_uStrip_noPt1CutnoPt2Cut_noPi0Cuts_scalePeak_logy

20080819_ppSet20080819_pp08__40stripsPP08_showerShapes_meanE_uStrip_noPt1CutnoPt2Cut_noPi0Cuts_scalePeak_logy

20080819_ppSet20080728_pp06l2g__40stripsPP06_showerShapes_meanE_vStrip_noPt1CutnoPt2Cut_noPi0Cuts_scalePeak_logy

20080819_ppSet20080728_pp06l2g__40stripsPP06_showerShapes_meanE_vStrip_noPt1CutnoPt2Cut_noPi0Cuts_scalePeak_logy

20080819_ppSet20080728_pp06l2g__40stripsPP06_showerShapes_meanE_uStrip_noPt1CutnoPt2Cut_noPi0Cuts_scalePeak_logy

20080819_ppSet20080728_pp06l2g__40stripsPP06_showerShapes_meanE_uStrip_noPt1CutnoPt2Cut_noPi0Cuts_scalePeak_logy

Update on PWG restructuring - Committee Report

geometry used in Simulation (plain) vs. Embedding

Geometry used in simulation/embedding for hits projection

For embedding with SSD, we project GEANT hits on real geometry.

Final Data Plots

 The following plots are for data.

Mid-rapidity Collins Asymmetry Calculation

In order to estimate the order magnitude of the single spin Collins asymmetry at midrapidity I calcuated the following partonic components from jet reconstruction using the STAR PYTHIA + GEANT simu

20 BSMD saturation

Under:

 The isolated BSMD cluster algo allows to select different range of tower energy cluster as shown in Fig.1

general routing for the top and bottom GEM, August 16,

Under:

 these Gerber files  show the general routing for the top and bottom GEM foil layers plus a representative sample of the GE

Vertex splitting QA in the new Year 7 Au+Au production(P08ic w/Minuit3)

I have looked at the new P08ic AuAu production that was done with Minuit3 VF to test Anthony's modified VF.

Jigsaw Fits (1st try)

Goal:

List of STAR Conduits

List of conduits

  • Grayed items are historical records

Data Sets

For the cross section analysis I am using a number of Monte Carlo samples along with one data set.  The details of each of these sets can be found below:

 

Comparison of Different Calculations for z

WORK IN PROGRESS

 plus-z-log

 plus-z

minus-fit-2 minus-fit-3 minus-fit-4

Cross Section Analysis

On the pages listed below I'm going to try to keep track of the work towards measuring the cross section for inclusive pion production in pp collisions from run 6.  I'll try to keep the posts

Deactivating records

A full description of the deactivation feild can be found here

http://drupal.star.bnl.gov/STAR/comp/db/time-stamps