Vertex Reconstruction studies
Inclusive electron GEMC 2.4 & Coatjava 2.4
LB_GEMC2.4CJ2.4_Vertex
Summary
Set all histogram ranges to -6,6 cm and bin sizes of 0.1 cm
Point target X,Y,Z=0 cm
|
No Rastering
|
Vx Difference |
|
Vy Difference |
|
Vz Difference |
|
X Resolution (cm) |
0.2362 +/- 0.0008
|
Y Resolution(cm) |
0.09809 +/- 0.00033
|
Z Resolution (cm) |
0.05435 +/- 0.00017
|
These histograms raise some questions. To begin I created a LUND file with 6 GeV incident electrons at 25 degrees in theta and 0 degrees in phi. All of the vertex positions were set to 0. I then ran GEMC 2.4 using the command line
~/src/CLAS/GEMC/source/gemc -USE_GUI=0 -INPUT_GEN_FILE="LUND,No_Raster.LUND" -N=75000 eg12_sol_No_Raster.gcard
which created an output file called eg12_sol_75k_No_Raster.ev. After that the reconstruction command line used was
~/src/CLAS/coatjava-2.4/bin/clas12-reconstruction -i eg12_sol_75k_No_Raster.ev-config GEOM::new=true -config MAG::torus=-1.0 -config MAG::solenoid=1.0 -o eg12_sol_75k_No_Raster_rec.evio -s DCHB:DCTB:EC:FTOF:EB -config DATA::mc=true -config DCTB::useRaster=true
After the reconstruction a root file was created using
~/src/CLAS/evio2root/bin/evio2root eg12_sol_75k_No_Raster_rec.evio eg12_sol_75k_No_Raster_rec.root 75000
A plot was then created to show the X Vertex and Y Vertex Differences
The first question is why is there a shift in the Y Difference. What would make X more centered around 0? The next question is when rastering begins, why do the resolutions in the X Vertices remain unchanged while the resolutions in the Y Vertices change?
Point in 2-D but extended target in 1-D
Two vertex variables are fixed at zero and the third vertex variable is altered
|
2cm X Raster, Y=0,Z=0 |
2 cm Y Raster, X=0,Z=0 |
2 cm Z Raster ,X=0,Y=0 |
6 cm Z Raster ,X=0,Y=0
|
Vx Difference |
![1cm XRaster VxDifference sol 75k.png](/./images/thumb/c/c6/1cm_XRaster_VxDifference_sol_75k.png/200px-1cm_XRaster_VxDifference_sol_75k.png) |
![1cm YRaster VxDifference sol.png](/./images/thumb/9/91/1cm_YRaster_VxDifference_sol.png/200px-1cm_YRaster_VxDifference_sol.png) |
![2cm ZRaster VxDifference sol.png](/./images/thumb/8/83/2cm_ZRaster_VxDifference_sol.png/200px-2cm_ZRaster_VxDifference_sol.png) |
|
Vy Difference |
![1cm XRaster VyDifference sol.png](/./images/thumb/8/85/1cm_XRaster_VyDifference_sol.png/200px-1cm_XRaster_VyDifference_sol.png) |
![YRaster Eventy.png](/./images/thumb/b/bc/YRaster_Eventy.png/200px-YRaster_Eventy.png) |
![2cm ZRaster VyDifference sol.png](/./images/thumb/6/66/2cm_ZRaster_VyDifference_sol.png/200px-2cm_ZRaster_VyDifference_sol.png) |
|
Vz Difference |
![1cm XRaster VzDifference sol.png](/./images/thumb/2/28/1cm_XRaster_VzDifference_sol.png/200px-1cm_XRaster_VzDifference_sol.png) |
![1cm YRaster VzDifference sol.png](/./images/thumb/8/80/1cm_YRaster_VzDifference_sol.png/200px-1cm_YRaster_VzDifference_sol.png) |
![2cm ZRaster VzDifference.png](/./images/thumb/e/e9/2cm_ZRaster_VzDifference.png/200px-2cm_ZRaster_VzDifference.png) |
|
X Resolution (cm) |
0.2658 +/- 0.0010 |
0.2531 +/- 0.0009 |
0.2544 +/- 0.0009 |
0.2539 +/- 0.0009
|
Y Resolution(cm) |
0.1728 +/- 0.0007 |
0.2368 +/- 0.0007 |
0.2644 +/- 0.0007 |
0.6191 +/- 0.0013
|
Z Resolution (cm) |
0.1792 +/- 0.0006 |
0.1998 +/- 0.0004 |
0.4318 +/- 0.0009 |
1.105 +/- 0.002
|
Extended target -3 < Z < 3 cm
|
1cm X Raster |
1 cm Y Raster |
1 cm X & Y Raster
|
X Resolution (cm) |
0.2696 +/- 0.0009 |
0.2588 +/- 0.0009 |
0.2734 +/- 0.0009
|
Y Resolution (cm) |
0.6234 +/- 0.0014 |
0.6851 +/- 0.0014 |
0.6927 +/- 0.0013
|
Z Resolution (cm) |
1.136 +/- 0.002 |
1.361 +/- 0.002 |
1.381 +/- 0.003
|
Generated Vx (cm) |
![3cm ZRaster 1cm XRaster GenX sol.png](/./images/thumb/c/c7/3cm_ZRaster_1cm_XRaster_GenX_sol.png/200px-3cm_ZRaster_1cm_XRaster_GenX_sol.png) |
![3cm ZRaster 1cm YRaster GenX sol.png](/./images/thumb/9/99/3cm_ZRaster_1cm_YRaster_GenX_sol.png/200px-3cm_ZRaster_1cm_YRaster_GenX_sol.png) |
|
Generated Vy (cm) |
![3cm ZRaster 1cm XRaster GenY sol.png](/./images/thumb/e/e0/3cm_ZRaster_1cm_XRaster_GenY_sol.png/200px-3cm_ZRaster_1cm_XRaster_GenY_sol.png) |
![3cm ZRaster 1cm YRaster GenY sol.png](/./images/thumb/1/15/3cm_ZRaster_1cm_YRaster_GenY_sol.png/200px-3cm_ZRaster_1cm_YRaster_GenY_sol.png) |
|
Generated Vz (cm) |
![3cm ZRaster 1cm XRaster GenZ sol.png](/./images/thumb/d/d6/3cm_ZRaster_1cm_XRaster_GenZ_sol.png/200px-3cm_ZRaster_1cm_XRaster_GenZ_sol.png) |
![3cm ZRaster 1cm YRaster GenZ sol.png](/./images/thumb/f/f1/3cm_ZRaster_1cm_YRaster_GenZ_sol.png/200px-3cm_ZRaster_1cm_YRaster_GenZ_sol.png) |
|
Reconstructed Vx (cm) |
![3cm ZRaster 1cm XRaster EventX sol.png](/./images/thumb/a/a2/3cm_ZRaster_1cm_XRaster_EventX_sol.png/200px-3cm_ZRaster_1cm_XRaster_EventX_sol.png) |
![3cm ZRaster 1cm YRaster EventX sol.png](/./images/thumb/4/49/3cm_ZRaster_1cm_YRaster_EventX_sol.png/200px-3cm_ZRaster_1cm_YRaster_EventX_sol.png) |
|
Reconstructed Vy (cm) |
![3cm ZRaster 1cm XRaster EventY sol.png](/./images/thumb/3/32/3cm_ZRaster_1cm_XRaster_EventY_sol.png/200px-3cm_ZRaster_1cm_XRaster_EventY_sol.png) |
![3cm ZRaster 1cm YRaster EventY sol.png](/./images/thumb/3/32/3cm_ZRaster_1cm_YRaster_EventY_sol.png/200px-3cm_ZRaster_1cm_YRaster_EventY_sol.png) |
|
Reconstructed Vz (cm) |
![3cm ZRaster 1cm XRaster EventZ sol.png](/./images/thumb/7/7c/3cm_ZRaster_1cm_XRaster_EventZ_sol.png/200px-3cm_ZRaster_1cm_XRaster_EventZ_sol.png) |
![3cm ZRaster 1cm YRaster EventZ sol.png](/./images/thumb/8/82/3cm_ZRaster_1cm_YRaster_EventZ_sol.png/200px-3cm_ZRaster_1cm_YRaster_EventZ_sol.png) |
|
Vx Difference (cm) |
![XZRaster VxDifference 1mmbins.png](/./images/thumb/c/c0/XZRaster_VxDifference_1mmbins.png/200px-XZRaster_VxDifference_1mmbins.png) |
![YZRaster VxDifference 1mmbins.png](/./images/thumb/e/e9/YZRaster_VxDifference_1mmbins.png/200px-YZRaster_VxDifference_1mmbins.png) |
|
Vy Difference (cm) |
![XZRaster VyDifference 1mmbins.png](/./images/thumb/5/52/XZRaster_VyDifference_1mmbins.png/200px-XZRaster_VyDifference_1mmbins.png) |
![YZRaster VyDifference 1mmbins.png](/./images/thumb/9/9a/YZRaster_VyDifference_1mmbins.png/200px-YZRaster_VyDifference_1mmbins.png) |
|
Vz Difference (cm) |
![XZRaster VzDifference 1mmbins.png](/./images/thumb/5/54/XZRaster_VzDifference_1mmbins.png/200px-XZRaster_VzDifference_1mmbins.png) |
![YZRaster VzDifference 1mmbins.png](/./images/thumb/0/07/YZRaster_VzDifference_1mmbins.png/200px-YZRaster_VzDifference_1mmbins.png) |
|
Extended target in Z. Vy shift analysis
All Histograms below were created by simply making the target longer along the Z axis. Each case uses vertex points for X and Y ranging from -1cm to 1cm
|
0.5cm Z Target |
1cm Z Target |
2cm Z Target |
3cm Z Target |
4cm Z Target |
5cm Z Target
|
X Resolution (cm) |
0.2705 +/- 0.0010 |
0.2726 +/- 0.0010 |
0.2716 +/- 0.0010 |
0.2731 +/- 0.0010 |
0.2702 +/- 0.0009 |
0.2736 +/- 0.0010
|
Y Resolution (cm) |
0.2041 +/- 0.0010 |
0.2282 +/- 0.0011 |
0.3152 +/- 0.0014 |
0.433 +/- 0.002 |
0.5584 +/- 0.0018 |
0.6454 +/- 0.0015
|
Z Resolution (cm) |
0.28 +/-0.00 |
0.3582 +/- 0.0013 |
0.5659 +/- 0.0018 |
0.7927 +/- 0.0023 |
1.034 +/- 0.003 |
1.253 +/-0.003
|
X Mean (cm) |
0.0139 +/- 0.001 |
0.0139 +/- 0.00107 |
0.01436 +/- 0.00104 |
0.01217 +/- 0.00107 |
0.00991 +/- 0.00104 |
0.009022 +/- 0.00105
|
Y Mean (cm) |
-0.1893 +/- 0.0011 |
-0.2004 +/- 0.0012 |
-0.2379 +/- 0.0016 |
-0.2936 +/- 0.0022 |
-0.3648 +/- 0.0027 |
-0.3871 +/- 0.0026
|
Z Mean (cm) |
0.0928 +/- 0.0014 |
0.06464 +/- 0.0013 |
-0.0337 +/- 0.0028 |
-0.1582 +/- 0.0040 |
-0.3016 +/- 0.0053 |
-0.486 +/- 0.006
|
Generated Vx (cm) |
![05cmZTarg GenPartx.png](/./images/thumb/8/81/05cmZTarg_GenPartx.png/200px-05cmZTarg_GenPartx.png) |
![1cmZTarg GenPartx.png](/./images/thumb/4/49/1cmZTarg_GenPartx.png/200px-1cmZTarg_GenPartx.png) |
![2cmZTarg GenPartx.png](/./images/thumb/4/4f/2cmZTarg_GenPartx.png/200px-2cmZTarg_GenPartx.png) |
![3cmZTarg GenPartx.png](/./images/thumb/e/ec/3cmZTarg_GenPartx.png/200px-3cmZTarg_GenPartx.png) |
![4cmZTarg GenPartx.png](/./images/thumb/7/74/4cmZTarg_GenPartx.png/200px-4cmZTarg_GenPartx.png) |
|
Generated Vy (cm) |
![0.5ZTarg GenPartY.png](/./images/thumb/5/5f/0.5ZTarg_GenPartY.png/200px-0.5ZTarg_GenPartY.png) |
![1cmZTarg GenParty.png](/./images/thumb/9/97/1cmZTarg_GenParty.png/200px-1cmZTarg_GenParty.png) |
![2cmZTarg GenPartY.png](/./images/thumb/3/3b/2cmZTarg_GenPartY.png/200px-2cmZTarg_GenPartY.png) |
![3cmZTarg GenParty.png](/./images/thumb/0/0b/3cmZTarg_GenParty.png/200px-3cmZTarg_GenParty.png) |
![4cmZTarg GenPartY.png](/./images/thumb/6/6b/4cmZTarg_GenPartY.png/200px-4cmZTarg_GenPartY.png) |
|
Generated Vz (cm) |
![05ZTarg GenPartz.png](/./images/thumb/9/90/05ZTarg_GenPartz.png/200px-05ZTarg_GenPartz.png) |
![1cmZTarg GenPartz.png](/./images/thumb/5/5a/1cmZTarg_GenPartz.png/200px-1cmZTarg_GenPartz.png) |
![2cmZTarg GenPartz.png](/./images/thumb/0/01/2cmZTarg_GenPartz.png/200px-2cmZTarg_GenPartz.png) |
![3cmZTarg GenPartz.png](/./images/thumb/4/49/3cmZTarg_GenPartz.png/200px-3cmZTarg_GenPartz.png) |
![4cmZTarg GenPartz.png](/./images/thumb/a/aa/4cmZTarg_GenPartz.png/200px-4cmZTarg_GenPartz.png) |
|
Reconstructed Vx (cm) |
![0.5ZTarg Eventx.png](/./images/thumb/c/c4/0.5ZTarg_Eventx.png/200px-0.5ZTarg_Eventx.png) |
![1cmZTarg Eventx.png](/./images/thumb/d/d6/1cmZTarg_Eventx.png/200px-1cmZTarg_Eventx.png) |
![2cmZTarg Eventx.png](/./images/thumb/b/bc/2cmZTarg_Eventx.png/200px-2cmZTarg_Eventx.png) |
![3cmZTarg Eventx.png](/./images/thumb/c/c1/3cmZTarg_Eventx.png/200px-3cmZTarg_Eventx.png) |
![4cmZTarg Eventx.png](/./images/thumb/2/28/4cmZTarg_Eventx.png/200px-4cmZTarg_Eventx.png) |
|
Reconstructed Vy (cm) |
![0.5ZTarg Eventy.png](/./images/thumb/6/65/0.5ZTarg_Eventy.png/200px-0.5ZTarg_Eventy.png) |
![1cmZTarg Eventy.png](/./images/thumb/4/41/1cmZTarg_Eventy.png/200px-1cmZTarg_Eventy.png) |
![2cmZTarg EventY.png](/./images/thumb/4/4a/2cmZTarg_EventY.png/200px-2cmZTarg_EventY.png) |
![3cmZTarg Eventy.png](/./images/thumb/b/be/3cmZTarg_Eventy.png/200px-3cmZTarg_Eventy.png) |
![4cmZTarg Eventy.png](/./images/thumb/a/a9/4cmZTarg_Eventy.png/200px-4cmZTarg_Eventy.png) |
|
Reconstructed Vz (cm) |
![0.5ZTarg Eventz.png](/./images/thumb/3/3d/0.5ZTarg_Eventz.png/200px-0.5ZTarg_Eventz.png) |
![1cmZTarg Eventz.png](/./images/thumb/2/22/1cmZTarg_Eventz.png/200px-1cmZTarg_Eventz.png) |
![2cmZTarg Eventz.png](/./images/thumb/3/3e/2cmZTarg_Eventz.png/200px-2cmZTarg_Eventz.png) |
![3cmZTarg Eventz.png](/./images/thumb/c/c2/3cmZTarg_Eventz.png/200px-3cmZTarg_Eventz.png) |
![4cmZTarg Eventz.png](/./images/thumb/9/90/4cmZTarg_Eventz.png/200px-4cmZTarg_Eventz.png) |
|
Vx Difference (cm) |
![0.5ZTarg VxDiff.png](/./images/thumb/9/98/0.5ZTarg_VxDiff.png/200px-0.5ZTarg_VxDiff.png) |
![1cmZTarg VxDiff.png](/./images/thumb/6/68/1cmZTarg_VxDiff.png/200px-1cmZTarg_VxDiff.png) |
![2cmZTarg VxDiff.png](/./images/thumb/e/e2/2cmZTarg_VxDiff.png/200px-2cmZTarg_VxDiff.png) |
![3cmZTarg VxDiff.png](/./images/thumb/c/c5/3cmZTarg_VxDiff.png/200px-3cmZTarg_VxDiff.png) |
![4cmZTarg VxDiff.png](/./images/thumb/1/12/4cmZTarg_VxDiff.png/200px-4cmZTarg_VxDiff.png) |
|
Vy Difference (cm) |
![0.5ZTarg VyDiff.png](/./images/thumb/a/a1/0.5ZTarg_VyDiff.png/200px-0.5ZTarg_VyDiff.png) |
![1cmZTarg VyDiff.png](/./images/thumb/1/16/1cmZTarg_VyDiff.png/200px-1cmZTarg_VyDiff.png) |
![2cmZTarg VyDiff.png](/./images/thumb/3/36/2cmZTarg_VyDiff.png/200px-2cmZTarg_VyDiff.png) |
![3cmZTarg VyDiff.png](/./images/thumb/b/bb/3cmZTarg_VyDiff.png/200px-3cmZTarg_VyDiff.png) |
![4cmZTarg VyDiff.png](/./images/thumb/2/28/4cmZTarg_VyDiff.png/200px-4cmZTarg_VyDiff.png) |
|
Vz Difference (cm) |
![0.5ZTarg VzDiff.png](/./images/thumb/1/1f/0.5ZTarg_VzDiff.png/200px-0.5ZTarg_VzDiff.png) |
![1cmZTarg VzDiff.png](/./images/thumb/1/1a/1cmZTarg_VzDiff.png/200px-1cmZTarg_VzDiff.png) |
![2cmZTarg VzDiff.png](/./images/thumb/c/c3/2cmZTarg_VzDiff.png/200px-2cmZTarg_VzDiff.png) |
![3cmZTarg VzDiff.png](/./images/thumb/c/c1/3cmZTarg_VzDiff.png/200px-3cmZTarg_VzDiff.png) |
![4cmZTarg VzDiff.png](/./images/thumb/3/35/4cmZTarg_VzDiff.png/200px-4cmZTarg_VzDiff.png) |
|
It would seem that increasing the length of the target in the Z direction has an effect on the resolution of the Y vertex position along with how far the center of the Gaussian peak will shift for the Y vertex differences.
Localized Vertex Resolution Investigation of Line Targets
GEMC was ran to create electrons being produced in a line along certain axes. These include three separate 2cm targets centered at (0,0,0) in the X, Y , and Z directions. The final target is a line along the Z axis centered at (0,0,0) that is 6cm long. The generated electrons were shot at 25 degrees in theta and 0 degrees in phi at an energy of 6GeV.
Here is an example of how the cuts were made. Consider the case of a 2cm line target in the Z direction centered at (0,0,0). Closed intervals begin at the end of the target and are 0.1cm long. So the first interval would be [-1.0,-0.9], then the next would be [-0.9, -0.8] and so on until the entire target is covered. The events in the EVENTHB bank were cut so that in any given interval there would be a margin of +/- 1cm to remove any outliers that may cause the histograms to have long tails.
Below are the histograms for the 2cm line target in Y,X=0,Z=0. The electrons were fired with an energy of 6 GeV at 25 degrees in theta at 0 degrees in phi.
|
[-1.0 , -0.9] |
[-0.9 , -0.8] |
[-0.8 , -0.7] |
[-0.7 , -0.6] |
[-0.6 , -0.5] |
[-0.5 , -0.4] |
[-0.4 , -0.3] |
[-0.3 , -0.2] |
[-0.2 , -0.1] |
[-0.1 , 0.0]
|
Resolution (cm) |
0.09406 +/- 0.00128 |
0.0868 +/- 0.0013 |
0.08961 +/- 0.00128 |
0.09853 +/- 0.00148 |
0.1038 +/- 0.0016 |
0.1202 +/- 0.0018 |
0.1755 +/- 0.0026 |
0.1847 +/- 0.0028 |
0.1255 +/- 0.0019 |
0.09663 +/- 0.00160
|
Vy Difference |
![VyDiff--1.0,-0.9-.png](/./images/thumb/3/3c/VyDiff--1.0%2C-0.9-.png/200px-VyDiff--1.0%2C-0.9-.png) |
![VyDiff--0.9,-0.8-.png](/./images/thumb/c/c8/VyDiff--0.9%2C-0.8-.png/200px-VyDiff--0.9%2C-0.8-.png) |
![VyDiff--0.8,-0.7-.png](/./images/thumb/6/6b/VyDiff--0.8%2C-0.7-.png/200px-VyDiff--0.8%2C-0.7-.png) |
![VyDiff--0.7,-0.6-.png](/./images/thumb/7/7a/VyDiff--0.7%2C-0.6-.png/200px-VyDiff--0.7%2C-0.6-.png) |
![VyDiff--0.6,-0.5-.png](/./images/thumb/0/04/VyDiff--0.6%2C-0.5-.png/200px-VyDiff--0.6%2C-0.5-.png) |
![VyDiff--0.5,-0.4-.png](/./images/thumb/c/c6/VyDiff--0.5%2C-0.4-.png/200px-VyDiff--0.5%2C-0.4-.png) |
![VyDiff--0.4,-0.3-.png](/./images/thumb/1/1e/VyDiff--0.4%2C-0.3-.png/200px-VyDiff--0.4%2C-0.3-.png) |
![VyDiff--0.3,-0.2-.png](/./images/thumb/e/ec/VyDiff--0.3%2C-0.2-.png/200px-VyDiff--0.3%2C-0.2-.png) |
![VyDiff--0.2,-0.1-.png](/./images/thumb/5/5f/VyDiff--0.2%2C-0.1-.png/200px-VyDiff--0.2%2C-0.1-.png) |
|
* |
* |
* |
* |
* |
* |
* |
*
|
|
[0.9 , 1.0] |
[0.8 , 0.9] |
[0.7 , 0.8] |
[0.6 , 0.7] |
[0.5 , 0.6] |
[0.4 , 0.5] |
[0.3 , 0.4] |
[0.2 , 0.3] |
[0.1 , 0.2] |
[0.0 , 0.1]
|
Resolution (cm) |
0.1001 +/- 0.0016 |
0.1221 +/- 0.0018 |
0.1144 +/- 0.0017 |
0.169 +/- 0.003 |
0.171 +/- 0.003 |
0.1105 +/- 0.0016 |
0.09508 +/- 0.00137 |
0.09065 +/- 0.00140 |
0.09302 +/- 0.00133 |
0.09008 +/- 0.00122
|
Vy Difference |
![VyDiff-0.9,1.0-.png](/./images/thumb/2/2e/VyDiff-0.9%2C1.0-.png/200px-VyDiff-0.9%2C1.0-.png) |
![VyDiff-0.8,0.9-.png](/./images/thumb/e/e7/VyDiff-0.8%2C0.9-.png/200px-VyDiff-0.8%2C0.9-.png) |
![VyDiff-0.7,0.8-.png](/./images/thumb/4/4d/VyDiff-0.7%2C0.8-.png/200px-VyDiff-0.7%2C0.8-.png) |
![VyDiff-0.6,0.7-.png](/./images/thumb/f/f2/VyDiff-0.6%2C0.7-.png/200px-VyDiff-0.6%2C0.7-.png) |
![VyDiff-0.5,0.6-.png](/./images/thumb/e/e8/VyDiff-0.5%2C0.6-.png/200px-VyDiff-0.5%2C0.6-.png) |
![VyDiff-0.4,0.5-.png](/./images/thumb/4/46/VyDiff-0.4%2C0.5-.png/200px-VyDiff-0.4%2C0.5-.png) |
![VyDiff-0.3,0.4-.png](/./images/thumb/4/45/VyDiff-0.3%2C0.4-.png/200px-VyDiff-0.3%2C0.4-.png) |
![VyDiff-0.2,0.3-.png](/./images/thumb/8/82/VyDiff-0.2%2C0.3-.png/200px-VyDiff-0.2%2C0.3-.png) |
![VyDiff-0.1,0.2-.png](/./images/thumb/f/ff/VyDiff-0.1%2C0.2-.png/200px-VyDiff-0.1%2C0.2-.png) |
|
Below are the histograms for a 2cm target along the Y axis, X = 0 Z = 0. The electrons were fired with an energy of 6 GeV at 25 degrees in theta and 180 degrees in phi.
|
[-1.0 , -0.9] |
[-0.9 , -0.8] |
[-0.8 , -0.7] |
[-0.7 , -0.6] |
[-0.6 , -0.5] |
[-0.5 , -0.4] |
[-0.4 , -0.3] |
[-0.3 , -0.2] |
[-0.2 , -0.1] |
[-0.1 , 0.0]
|
Resolution (cm) |
0.07741 +/- 0.00166 |
0.0976 +/- 0.0017 |
0.09924 +/- 0.00150 |
0.1386 +/- 0.0024 |
0.1278 +/- 0.0027 |
0.09882 +/- 0.00142 |
0.09322 +/- 0.00130 |
0.09399 +/- 0.00145 |
0.08935 +/- 0.00131 |
0.08913 +/- 0.0013 |
|
Vy Difference |
![VyDiff--1.0,-0.9- 180Deg.png](/./images/thumb/f/ff/VyDiff--1.0%2C-0.9-_180Deg.png/200px-VyDiff--1.0%2C-0.9-_180Deg.png) |
![VyDiff--0.9,-0.8- 180Deg.png](/./images/thumb/4/4d/VyDiff--0.9%2C-0.8-_180Deg.png/200px-VyDiff--0.9%2C-0.8-_180Deg.png) |
![VyDiff--0.8,-0.7- 180Deg.png](/./images/thumb/8/8f/VyDiff--0.8%2C-0.7-_180Deg.png/200px-VyDiff--0.8%2C-0.7-_180Deg.png) |
![VyDiff--0.7,-0.6- 180Deg.png](/./images/thumb/7/7c/VyDiff--0.7%2C-0.6-_180Deg.png/200px-VyDiff--0.7%2C-0.6-_180Deg.png) |
![VyDiff--0.6,-0.5- 180Deg.png](/./images/thumb/9/9f/VyDiff--0.6%2C-0.5-_180Deg.png/200px-VyDiff--0.6%2C-0.5-_180Deg.png) |
![VyDiff--0.5,-0.4- 180Deg.png](/./images/thumb/4/40/VyDiff--0.5%2C-0.4-_180Deg.png/200px-VyDiff--0.5%2C-0.4-_180Deg.png) |
![VyDiff--0.4,-0.3- 180Deg.png](/./images/thumb/6/64/VyDiff--0.4%2C-0.3-_180Deg.png/200px-VyDiff--0.4%2C-0.3-_180Deg.png) |
![VyDiff--0.3,-0.2- 180Deg.png](/./images/thumb/a/a8/VyDiff--0.3%2C-0.2-_180Deg.png/200px-VyDiff--0.3%2C-0.2-_180Deg.png) |
![VyDiff--0.2,-0.1- 180Deg.png](/./images/thumb/3/39/VyDiff--0.2%2C-0.1-_180Deg.png/200px-VyDiff--0.2%2C-0.1-_180Deg.png) |
![VyDiff--0.1,0.0- 180Deg.png](/./images/thumb/f/f6/VyDiff--0.1%2C0.0-_180Deg.png/200px-VyDiff--0.1%2C0.0-_180Deg.png) |
|
* |
* |
* |
* |
* |
* |
* |
*
|
|
[0.9 , 1.0] |
[0.8 , 0.9] |
[0.7 , 0.8] |
[0.6 , 0.7] |
[0.5 , 0.6] |
[0.4 , 0.5] |
[0.3 , 0.4] |
[0.2 , 0.3] |
[0.1 , 0.2] |
[0.0 , 0.1]
|
Resolution (cm) |
|
|
|
|
|
|
|
0.1097 +/- 0.0029 |
0.1146 +/- 0.0025 |
0.09557 +/- 0.00150
|
Vy Difference |
|
|
|
|
|
|
|
![VyDiff-0.2,0.3- 180Deg.png](/./images/thumb/3/3c/VyDiff-0.2%2C0.3-_180Deg.png/200px-VyDiff-0.2%2C0.3-_180Deg.png) |
![VyDiff-0.1,0.2- 180Deg.png](/./images/thumb/8/81/VyDiff-0.1%2C0.2-_180Deg.png/200px-VyDiff-0.1%2C0.2-_180Deg.png) |
|
Below are the Histograms for a 2cm long target in the X Direction with a 6GeV electron fired at 25 degrees in theta and 90 degrees in phi
|
[-1.0 , -0.9] |
[-0.9 , -0.8] |
[-0.8 , -0.7] |
[-0.7 , -0.6] |
[-0.6 , -0.5] |
[-0.5 , -0.4] |
[-0.4 , -0.3] |
[-0.3 , -0.2] |
[-0.2 , -0.1] |
[-0.1 , 0.0]
|
Resolution (cm) |
0.1341 +/- 0.0140 |
0.1304 +/- 0.0051 |
0.1182 +/- 0.0036 |
0.09062 +/- 0.0031 |
0.06816 +/- 0.00191 |
n/a |
0.0635 +/- 0.0013 |
0.0618 +/- 0.0012 |
0.07473 +/- 0.00178 |
0.08787 +/- 0.00132 |
|
Vx Difference |
![VxDiff--1.0,-0.9-.png](/./images/thumb/2/22/VxDiff--1.0%2C-0.9-.png/200px-VxDiff--1.0%2C-0.9-.png) |
![VxDiff--0.9,-0.8-.png](/./images/thumb/3/31/VxDiff--0.9%2C-0.8-.png/200px-VxDiff--0.9%2C-0.8-.png) |
![VxDiff--0.8,-0.7-.png](/./images/thumb/8/80/VxDiff--0.8%2C-0.7-.png/200px-VxDiff--0.8%2C-0.7-.png) |
![VxDiff--0.7,-0.6-.png](/./images/thumb/3/36/VxDiff--0.7%2C-0.6-.png/200px-VxDiff--0.7%2C-0.6-.png) |
![VxDiff--0.6,-0.5-.png](/./images/thumb/c/ce/VxDiff--0.6%2C-0.5-.png/200px-VxDiff--0.6%2C-0.5-.png) |
![VxDiff--0.5,-0.4-.png](/./images/thumb/a/a1/VxDiff--0.5%2C-0.4-.png/200px-VxDiff--0.5%2C-0.4-.png) |
![VxDiff--0.4,-0.3-.png](/./images/thumb/8/81/VxDiff--0.4%2C-0.3-.png/200px-VxDiff--0.4%2C-0.3-.png) |
![VxDiff--0.3,-0.2-.png](/./images/thumb/f/f6/VxDiff--0.3%2C-0.2-.png/200px-VxDiff--0.3%2C-0.2-.png) |
![VxDiff--0.2,-0.1-.png](/./images/thumb/3/30/VxDiff--0.2%2C-0.1-.png/200px-VxDiff--0.2%2C-0.1-.png) |
![VxDiff--0.1,0.0-.png](/./images/thumb/b/bc/VxDiff--0.1%2C0.0-.png/200px-VxDiff--0.1%2C0.0-.png) |
|
* |
* |
* |
* |
* |
* |
* |
*
|
|
[0.9 , 1.0] |
[0.8 , 0.9] |
[0.7 , 0.8] |
[0.6 , 0.7] |
[0.5 , 0.6] |
[0.4 , 0.5] |
[0.3 , 0.4] |
[0.2 , 0.3] |
[0.1 , 0.2] |
[0.0 , 0.1]
|
Resolution (cm) |
0.01572 +/- 0.00020 |
0.01844 +/- 0.00031 |
0.01722 +/- 0.00028 |
0.02386 +/- 0.00088 |
0.024 +/- 0.001 |
0.04406 +/- 0.00182 |
0.04517 +/- 0.00118 |
0.04722 +/- 0.00107 |
0.05667 +/- 0.00106 |
0.08356 +/- 0.00159
|
Vx Difference |
![VxDiff-0.9,1.0-.png](/./images/thumb/8/89/VxDiff-0.9%2C1.0-.png/200px-VxDiff-0.9%2C1.0-.png) |
![VxDiff-0.8,0.9-.png](/./images/thumb/c/ca/VxDiff-0.8%2C0.9-.png/200px-VxDiff-0.8%2C0.9-.png) |
![VxDiff-0.7,0.8-.png](/./images/thumb/9/94/VxDiff-0.7%2C0.8-.png/200px-VxDiff-0.7%2C0.8-.png) |
![VxDiff-0.6,0.7-.png](/./images/thumb/d/dc/VxDiff-0.6%2C0.7-.png/200px-VxDiff-0.6%2C0.7-.png) |
![VxDiff-0.5,0.6-.png](/./images/thumb/a/a0/VxDiff-0.5%2C0.6-.png/200px-VxDiff-0.5%2C0.6-.png) |
![VxDiff-0.4,0.5-.png](/./images/thumb/6/62/VxDiff-0.4%2C0.5-.png/200px-VxDiff-0.4%2C0.5-.png) |
![VxDiff-0.3,0.4-.png](/./images/thumb/e/e8/VxDiff-0.3%2C0.4-.png/200px-VxDiff-0.3%2C0.4-.png) |
![VxDiff-0.2,0.3-.png](/./images/thumb/4/44/VxDiff-0.2%2C0.3-.png/200px-VxDiff-0.2%2C0.3-.png) |
![VxDiff-0.1,0.2-.png](/./images/thumb/7/76/VxDiff-0.1%2C0.2-.png/200px-VxDiff-0.1%2C0.2-.png) |
|
Below are the Vx Differences using a 2cm target in X with incident 6 GeV electrons at 25 degrees in theta and 270 degrees in phi
|
[-1.0 , -0.9] |
[-0.9 , -0.8] |
[-0.8 , -0.7] |
[-0.7 , -0.6] |
[-0.6 , -0.5] |
[-0.5 , -0.4] |
[-0.4 , -0.3] |
[-0.3 , -0.2] |
[-0.2 , -0.1] |
[-0.1 , 0.0]
|
Resolution (cm) |
0.01571 +/- 0.0002 |
0.0163 +/- 0.0003 |
0.01821 +/- 0.0003 |
0.03065 +/- 0.00163 |
0.02109 +/- 0.00217 |
0.03772 +/- 0.00133 |
0.04817 +/- 0.00125 |
0.05154 +/- 0.00113 |
0.05677 +/- 0.00113 |
0.08348 +/- 0.00144 |
|
Vx Difference |
![VxDiff--1.0,-0.9- 270Deg.png](/./images/thumb/6/6f/VxDiff--1.0%2C-0.9-_270Deg.png/200px-VxDiff--1.0%2C-0.9-_270Deg.png) |
![VxDiff--0.9,-0.8- 270Deg.png](/./images/thumb/8/8c/VxDiff--0.9%2C-0.8-_270Deg.png/200px-VxDiff--0.9%2C-0.8-_270Deg.png) |
![VxDiff--0.8,-0.7- 270Deg.png](/./images/thumb/f/ff/VxDiff--0.8%2C-0.7-_270Deg.png/200px-VxDiff--0.8%2C-0.7-_270Deg.png) |
![VxDiff--0.7,-0.6- 270Deg.png](/./images/thumb/a/a6/VxDiff--0.7%2C-0.6-_270Deg.png/200px-VxDiff--0.7%2C-0.6-_270Deg.png) |
![VxDiff--0.6,-0.5- 270Deg.png](/./images/thumb/d/da/VxDiff--0.6%2C-0.5-_270Deg.png/200px-VxDiff--0.6%2C-0.5-_270Deg.png) |
![VxDiff--0.5,-0.4- 270Deg.png](/./images/thumb/8/8f/VxDiff--0.5%2C-0.4-_270Deg.png/200px-VxDiff--0.5%2C-0.4-_270Deg.png) |
![VxDiff--0.4,-0.3- 270Deg.png](/./images/thumb/a/ac/VxDiff--0.4%2C-0.3-_270Deg.png/200px-VxDiff--0.4%2C-0.3-_270Deg.png) |
![VxDiff--0.3,-0.2- 270Deg.png](/./images/thumb/f/f5/VxDiff--0.3%2C-0.2-_270Deg.png/200px-VxDiff--0.3%2C-0.2-_270Deg.png) |
![VxDiff--0.2,-0.1- 270Deg.png](/./images/thumb/3/3d/VxDiff--0.2%2C-0.1-_270Deg.png/200px-VxDiff--0.2%2C-0.1-_270Deg.png) |
![VxDiff--0.1,0.0- 270Deg.png](/./images/thumb/b/be/VxDiff--0.1%2C0.0-_270Deg.png/200px-VxDiff--0.1%2C0.0-_270Deg.png) |
|
* |
* |
* |
* |
* |
* |
* |
* |
* |
* |
*
|
|
[0.9 , 1.0] |
[0.8 , 0.9] |
[0.7 , 0.8] |
[0.6 , 0.7] |
[0.5 , 0.6] |
[0.4 , 0.5] |
[0.3 , 0.4] |
[0.2 , 0.3] |
[0.1 , 0.2] |
[0.0 , 0.1]
|
Resolution (cm) |
0.1257 +/- 0.0100 |
0.112 +/- 0.004 |
0.1162 +/- 0.0034 |
0.08958 +/- 0.00316 |
0.07347 +/- 0.00210 |
0.07271 +/- 0.00159 |
0.06196 +/- 0.00146 |
0.06087 +/- 0.00114 |
0.07298 +/- 0.00149 |
0.09017 +/- 0.00128
|
Vx Difference |
![VxDiff-0.9,1.0- 270Deg.png](/./images/thumb/6/69/VxDiff-0.9%2C1.0-_270Deg.png/200px-VxDiff-0.9%2C1.0-_270Deg.png) |
![VxDiff-0.8,0.9- 270Deg.png](/./images/thumb/9/9a/VxDiff-0.8%2C0.9-_270Deg.png/200px-VxDiff-0.8%2C0.9-_270Deg.png) |
![VxDiff-0.7,0.8- 270Deg.png](/./images/thumb/f/f9/VxDiff-0.7%2C0.8-_270Deg.png/200px-VxDiff-0.7%2C0.8-_270Deg.png) |
![VxDiff-0.6,0.7- 270Deg.png](/./images/thumb/f/f9/VxDiff-0.6%2C0.7-_270Deg.png/200px-VxDiff-0.6%2C0.7-_270Deg.png) |
![VxDiff-0.5,0.6- 270Deg.png](/./images/thumb/6/69/VxDiff-0.5%2C0.6-_270Deg.png/200px-VxDiff-0.5%2C0.6-_270Deg.png) |
![VxDiff-0.4,0.5- 270Deg.png](/./images/thumb/e/ee/VxDiff-0.4%2C0.5-_270Deg.png/200px-VxDiff-0.4%2C0.5-_270Deg.png) |
![VxDiff-0.3,0.4- 270Deg.png](/./images/thumb/c/ca/VxDiff-0.3%2C0.4-_270Deg.png/200px-VxDiff-0.3%2C0.4-_270Deg.png) |
![VxDiff-0.2,0.3- 270Deg.png](/./images/thumb/6/6e/VxDiff-0.2%2C0.3-_270Deg.png/200px-VxDiff-0.2%2C0.3-_270Deg.png) |
![VxDiff-0.1,0.2- 270Deg.png](/./images/thumb/f/f0/VxDiff-0.1%2C0.2-_270Deg.png/200px-VxDiff-0.1%2C0.2-_270Deg.png) |
|
Elastic electron proton GEMC 2.4 & Coatjava 2.4
References
https://clasweb.jlab.org/wiki/index.php/TF_EG12_Vertex#Z_resolution_With_micro-megas
EG12#Vertex_Studies