Difference between revisions of "2018 Mott Paper Working Area"

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(Request #2)
(Request #1 -- First Draft Below)
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==Draft Punchlist==
 
==Draft Punchlist==
  
=== Request #1 -- First Draft Below ===
+
=== Request #1 -- First Draft Ready for Review ===
 
We measured dependence of electronic dead time on the beam current at five different average beam currents from 0.245-4.1 uA on a 1um foil.  He'd like a plot showing the five data points vs. beam current with their individual uncertainties, and then the average with it's uncertainty band.
 
We measured dependence of electronic dead time on the beam current at five different average beam currents from 0.245-4.1 uA on a 1um foil.  He'd like a plot showing the five data points vs. beam current with their individual uncertainties, and then the average with it's uncertainty band.
 
::[[File:ROOT_deadtime_asym_v_beamcurrent.gif|600px]]
 
::[[File:ROOT_deadtime_asym_v_beamcurrent.gif|600px]]

Revision as of 14:47, 4 November 2018

General Links/Documents

  • Run 1
Online Analysis Spreadsheet : media:run1database.ods
Asymmetry vs Foil Thickness Full Analysis Spreadsheet : media:06.01.17_Run1_ARC+Dilution.ods
  • Run 2
Online Analysis Spreadsheet : Media:Run2RawData.ods
Asymmetry vs Foil Thickness Full Analysis Spreadsheet : media:06.01.17_Run2_ARC+Dilution.ods

Draft Punchlist

Request #1 -- First Draft Ready for Review

We measured dependence of electronic dead time on the beam current at five different average beam currents from 0.245-4.1 uA on a 1um foil. He'd like a plot showing the five data points vs. beam current with their individual uncertainties, and then the average with it's uncertainty band.

ROOT deadtime asym v beamcurrent.gif
media:Deadtime vs beamcurrent.ods
Avg deadtime v beamcurrent.gif

Request #2

We measured dependence of the physics asymmetry on the position of the beam on the target foil from two target foils: 0.225um and 1um. For each foil we measured 7 asymmetries (one at center and six others away from center). The details are described in the systematics TN on the wiki. He'd like a plot showing the measured physics asymmetries (weighted average of IN/OUT) vs. radial distance from the center (instead of using x/y values shown in the TN), and then the average with it's uncertainty band, for the two target foils.

Request #3

Recreate Michael's Paper's Plot: Remaking of Figure 6: media:Au_targetMSteigerwald.gif. The lines are a fit ( asym = a / (1.0 + alpha . d) ). On the original figure, the lines were his calculations.

Request #4

We need an imagine of a typical FESEM picture showing a gold foil on a silicon substrate, or maybe 2 or 4 of them arranged to show typical measured you used in the analysis.

Request #5

For two foils, two samples were prepared – one near the foil center and one near the edge, and each were measured. Where are those results (or FESEM images) ?

Request #6

The detectors are centered at theta=172.6. We should check if S is maximum there or not. => The answer is that the maximum for KE=5MeV Au is 173.1 per Xavier and 129.9 per Ketevi. I think we erred perhaps so that the solid angle intercepted S at the same value left/right, or something like that.