Difference between revisions of "April 10, 2013"

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= Topics =
 
= Topics =
  
Time of flight results
+
== Removing Mott scattering chamber ==
Valeri Toukine's Mott analysis
+
[[Media:130410_Dismount.pdf]]
Removing Mott scattering chamber
+
...
+
  
 +
== Time of flight results ==
 +
[[Media:130410_TOF.pdf]]
  
Beam Time:
+
== Valeri Tioukine's Mott analysis ==
 +
[[Media:Tioukine_MITPEB.pdf]]
 +
 
 +
== Beam Time ==
 
  * Beam time for each target using S0 (assume no dependence of Sherman function on target thickness) and no limit on DAQ rate.  
 
  * Beam time for each target using S0 (assume no dependence of Sherman function on target thickness) and no limit on DAQ rate.  
 +
Gold (Au, Z=79), Silver (Ag, Z=47), Copper (Cu, Z=29). Note that:
 +
Figure of Merit (fom) ~ sigma * S^2 ~ Z^4.
 +
Beam Time ~ 1/fom = 1/Z^4
  
[[Image:euncer_pol.gif|800px]]
+
[[Image:euncer_pol.gif|600px]]
  
 
  * Beam Time for Gold with target thickness correction and DAQ rate < 5000 Hz.
 
  * Beam Time for Gold with target thickness correction and DAQ rate < 5000 Hz.
  
[[Image:Au_TimeDAQ.gif|800px]]
+
[[Image:Au_TimeDAQ.gif|600px]]
  
 
  * Beam Time for Silver with target thickness correction using Gold extrapolation and DAQ rate < 5000 Hz.
 
  * Beam Time for Silver with target thickness correction using Gold extrapolation and DAQ rate < 5000 Hz.
  
[[Image:Ag_TimeDAQ.gif|800px]]
+
[[Image:Ag_TimeDAQ.gif|600px]]
  
 
  * Beam Time for Copper with target thickness correction using Gold extrapolation and DAQ rate < 5000 Hz.
 
  * Beam Time for Copper with target thickness correction using Gold extrapolation and DAQ rate < 5000 Hz.
  
[[Image:Cu_TimeDAQ.gif|800px]]
+
[[Image:Cu_TimeDAQ.gif|600px]]
 +
 
 +
* Note: Target thickness extrapolation used above:
 +
- Alpha as a function of Kinetic Energy: alpha = 0.0066 + 0.052 * kine
 +
 
 +
- Effective Sherman Function: eff_sf = S0 /(1.0 +  alpha * d)
 +
 
 +
[[Image:Au_target1.gif|500px]]
 +
 
 +
[[Image:Au_alpha1.gif|500px]]

Latest revision as of 13:50, 10 April 2013

We will meet in ARC 428 on Wednesday April 10 at 3pm EST.

For those calling in we'll use the ReadyTalk audio conference system.

1. Dial Toll-Free Number: 866-740-1260 (U.S. & Canada)
2. Enter 7-digit access code 3441852, followed by “#”

Topics

Removing Mott scattering chamber

Media:130410_Dismount.pdf

Time of flight results

Media:130410_TOF.pdf

Valeri Tioukine's Mott analysis

Media:Tioukine_MITPEB.pdf

Beam Time

* Beam time for each target using S0 (assume no dependence of Sherman function on target thickness) and no limit on DAQ rate. 
Gold (Au, Z=79), Silver (Ag, Z=47), Copper (Cu, Z=29). Note that:
Figure of Merit (fom) ~ sigma * S^2 ~ Z^4. 
Beam Time ~ 1/fom = 1/Z^4

Euncer pol.gif

* Beam Time for Gold with target thickness correction and DAQ rate < 5000 Hz.

Au TimeDAQ.gif

* Beam Time for Silver with target thickness correction using Gold extrapolation and DAQ rate < 5000 Hz.

Ag TimeDAQ.gif

* Beam Time for Copper with target thickness correction using Gold extrapolation and DAQ rate < 5000 Hz.

Cu TimeDAQ.gif

* Note: Target thickness extrapolation used above:

- Alpha as a function of Kinetic Energy: alpha = 0.0066 + 0.052 * kine

- Effective Sherman Function: eff_sf = S0 /(1.0 + alpha * d)

Au target1.gif

Au alpha1.gif