Difference between revisions of "April 10, 2013"
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== Beam Time == | == 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|600px]] | [[Image:euncer_pol.gif|600px]] | ||
Revision as of 09:46, 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
Time of flight results Valeri Toukine's Mott analysis Removing Mott scattering chamber
...
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
* Beam Time for Gold with target thickness correction and DAQ rate < 5000 Hz.
* Beam Time for Silver 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.
* 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)
