Difference between revisions of "January 30, 2014 - Special Theory Meeting"

Revision as of 21:38, 15 January 2014

OUR EXPERIMENTAL PROGRAM: To precisely measure scattering asymmetry of spin polarized electrons from thin pure Z foils; Accessible energy range is about 3 to 8 MeV; Targets on hand are gold, silver, copper foils of varying thickness, but can install others readily; Measure polarimeter systematics with goal <0.5%

SIMULATION PROGRAM: Build GEANT4 model of polarimeter and benchmark detector response against measurement; Implement physics (cross-section, Sherman function, spin transfer functions) provided by theory; Develop ab initio simulation dependence of asymmetry on target thickness (multiple scattering, radiation effects, etc) to measurement; By calibrating model to experimental data predict zero-thickness asymmetry with high precision <1%

THEORY PROGRAM: Provide physics tables for simulation (cross-section, Sherman function, spin transfer functions); Describe theoretical basis, corrections, uncertainties; Advise which measurements may be best tests on leading corrections or limit absolute knowledge of physics

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 ; Remote call-in information TBD
-== Agenda ==
+== BACKGROUND FOR THEORISTS==
-; Brief Introduction
-; Discussion of questions provided below grouped by topic
+; OUR EXPERIMENTAL PROGRAM
-; Summary of future plans
+: To precisely measure scattering asymmetry of spin polarized electrons from thin pure Z foils
+: Accessible energy range is about 3 to 8 MeV
+: Targets on hand are gold, silver, copper foils of varying thickness, but can install others readily
+: Measure polarimeter systematics with goal <0.5%
+; SIMULATION PROGRAM
+: Build GEANT4 model of polarimeter and benchmark detector response against measurement
+: Implement physics (cross-section, Sherman function, spin transfer functions) provided by theory
+: Develop ab initio simulation dependence of asymmetry on target thickness (multiple scattering, radiation effects, etc) to measurement
+: By calibrating model to experimental data predict zero-thickness asymmetry with high precision <1%
+; THEORY PROGRAM
+: Provide physics tables for simulation (cross-section, Sherman function, spin transfer functions)
+: Describe theoretical basis, corrections, uncertainties
+: Advise which measurements may be best tests on leading corrections or limit absolute knowledge of physics
 == Questions (Please follow format shown) ==