20181017-Radiation-Mtg

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Agenda / Minutes

1. Adam measured dose on 6" radius cut between target and collimator. elog:3552
   • Dose about 1.6MGray on inner 1mm.
   • He will run Al and steel covers, and larger radius cut out.
2. Victoria doesn't reproduce Adam's result on heating on collimator box flange.
   • She finds about 30 W (compared to about 70 W from Adam).
3. Then talked about BMW
   • Are EPICS libraries on the vxWorks boards functioning? Can we expect them to work? (Victoria will check into this)
   • Walked through analysis steps, after having a beam modulation tree to work with.
   • Creation of slopes involves
     • correcting for "phase return"
     • fitting cycles (perhaps after averaging)
     • accumulating a full set of cycle correlation fits to create slopes (supercycle)
     • calculating correction slopes
     • outputting correlations and slopes from supercycle in tree, and or text file
   • The correction slopes we use will probably be averaged over some time period.
   • The quality of correction slopes can be checked using "residuals" of the modulation in the modulation data
   • Averaged corrections slopes will be applied in the analysis (post prompt? Perhaps by WAC?) using a macro to look up slopes and make correction
     • perhaps a macro would be made to provide an "alias" word for the corrected value for interactive use