Difference between revisions of "Position Resolution Study"
From Hall A Wiki
| Line 3: | Line 3: | ||
[[Image:X_diff_722.png]] | [[Image:X_diff_722.png]] | ||
[[Image:Y_diff_722.png]] | [[Image:Y_diff_722.png]] | ||
| + | |||
| + | |||
Using a slope vs difference plot, we noticed a correlation that should not have been there. | Using a slope vs difference plot, we noticed a correlation that should not have been there. | ||
| + | |||
| + | |||
| + | [[Image:X_diff_slope_722.png]] | ||
| + | [[Image:Y_diff_slope_722.png]] | ||
| + | We decided that our Z distance (distance between gems) was off. This could have been due to human error or not know where exactly a partical interacts with the gas. Using RMS VS %Z distance we got the following. | ||
| − | + | [[Image:X_Sigma_z2.png]] | |
| + | [[Image:X_Sigma_z3.png]] | ||
| + | [[Image:Y_Sigma_z2.png]] | ||
| + | [[Image:Y_Sigma_z3.png]] | ||
| + | Using the parameters, we can concluded what the lowest Sigma was and adjusted the the Z distance. Our final difference looked like this. | ||
| − | + | [[Image:X_diff_722_corrected.png]] | |
| + | [[Image:Y_diff_722_corrected.png]] | ||
Revision as of 10:36, 5 August 2011
Before we made any corrections to it, a count of the difference between measured path and predicted path using the other 2 gems
Using a slope vs difference plot, we noticed a correlation that should not have been there.
We decided that our Z distance (distance between gems) was off. This could have been due to human error or not know where exactly a partical interacts with the gas. Using RMS VS %Z distance we got the following.
Using the parameters, we can concluded what the lowest Sigma was and adjusted the the Z distance. Our final difference looked like this.
