August 14, 2013

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We will meet in TED 2561B on Wednesday August 14 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 “#”
Mamun
SEM imaging of 1um and 0.5um gold foils
Media:130812_SEM_Imaging_Gold.pptx
Sam (in abstentia)
Final report on beam optimization, multiple scattering and dump plat power distribution
Mott Polarimeter Upgrade at Jefferson Lab (June 2013) Media:SamRhodes_Final.pdf
Joe
Schedule, ladder and dump updates
Media:130814_MottUpdate_Grames.pdf
Marty
Modeling update Media:Simulation_Update_2013-08-14.pdf‎
PSTP status
PSTP

For the Mott polarimeter we are making a real top-down assessment with improvements where objective is a test of the polarimeter precision. To do this we are addressing various areas:

improvements and measurements of targets and collimator acceptance
reduction of backgrounds through lower-Z materials and TOF laser pulse selection
fully new Geant4 model of polarimeter geometry, including polarization processes
theory estimates on Sherman function, dominant systematic uncertainty
higher beam power mode of operation for systematic studies
modern parity-style FADC based DAQ for beam instrumentation and detector collection
new HVPS control system
improvement of signal:noise