Difference between revisions of "Π polarizability Meeting Nov 9, 2012"
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=Minutes= | =Minutes= | ||
| − | Attendees: | + | Attendees: Rory M.(chair), Sascha M., David L. |
| + | ==Next Meeting== | ||
| + | Rory will be out of town next week. The following week is the day after Thanksgiving so we won't meet again until Nov. 30th. | ||
| + | ==Beam Optimization== | ||
| + | * Rory has been in communication with Richard Jones. He pointed him to a plot in the CDR (ch. 4) that shows polarization dependance on energy. Near the endpoint, it rises roughly linearly with decreasing energy. | ||
| + | * Preliminary cross-section calculations for Primakoff look like a roughly linear dependence of the integrated cross-section on Energy (despite the E^4 dependence of the differential cross-section) | ||
| + | ==Vertex Optimization== | ||
| + | * David showed plot of acceptance of pi+pi- events as function of vertex location with the vertex constraint turned off. | ||
| + | * Will re-run with the vertex constraint turned on | ||
| + | ** (will also need to change geometry to include Pb target, but not the LH2 target) | ||
| + | * Some features are being added to the Hall-D simulation to help with tracking the geometry. This should make theses types of studies less error prone. | ||
| + | |||
| + | == Other == | ||
| + | * Sascha had some trouble with compiling the Hall-D software after updating last week. After updating to the latest code today though, things compiled again. | ||
| + | * He was able to reproduce the plots David showed last week. | ||
= Action Items = | = Action Items = | ||
| − | + | * Verify linear dependence of Primakoff cross-section with energy (Rory) | |
| + | * Re-run vertex acceptance simulation with vertex constraint turned on (David) | ||
Latest revision as of 16:26, 9 November 2012
Contents
Meeting Info.
Meeting Time
9:00 EST
Connecting
We meet via Skype. The relevant Skype user names are:
- Rory Miskimen - rmiskimen
- Alexander Mushkarenkov - alexander_mushkarenkov
- Elton Smith - eltonssmith
- David Lawrence - aehsdad
some phone numbers if needed:
David: (757) 269-5567 Rory: (413) 545-2480
Agenda
- Previous meeting: Nov 2, 2012
- Acceptance vs. z (David)
-
Minutes
Attendees: Rory M.(chair), Sascha M., David L.
Next Meeting
Rory will be out of town next week. The following week is the day after Thanksgiving so we won't meet again until Nov. 30th.
Beam Optimization
- Rory has been in communication with Richard Jones. He pointed him to a plot in the CDR (ch. 4) that shows polarization dependance on energy. Near the endpoint, it rises roughly linearly with decreasing energy.
- Preliminary cross-section calculations for Primakoff look like a roughly linear dependence of the integrated cross-section on Energy (despite the E^4 dependence of the differential cross-section)
Vertex Optimization
- David showed plot of acceptance of pi+pi- events as function of vertex location with the vertex constraint turned off.
- Will re-run with the vertex constraint turned on
- (will also need to change geometry to include Pb target, but not the LH2 target)
- Some features are being added to the Hall-D simulation to help with tracking the geometry. This should make theses types of studies less error prone.
Other
- Sascha had some trouble with compiling the Hall-D software after updating last week. After updating to the latest code today though, things compiled again.
- He was able to reproduce the plots David showed last week.
Action Items
- Verify linear dependence of Primakoff cross-section with energy (Rory)
- Re-run vertex acceptance simulation with vertex constraint turned on (David)
