Dan Dale Idaho State University February 19, 2012 Status of PrimEx Flux Dan Dale Idaho State University February 19, 2012

Comments on flux paper Flux analysis -TAC runs -electron counting -pair spectrometer

Flux paper Initial NIM draft done 12 ½ pages without references Currently in the process of cutting material Should be about 10 pages Draft ready for general review March 23.

TAC runs When I was RC, we didn’t have analysis of TAC runs. Damage to TAC. We have good experience on analysis from PrimEx I Key plot from PrimEx I to reproduce….

TAC-tagger timing Fig 5

TAC runs intensity study Probably don’t have this for PrimEx II

TAC long term stability We have this for PrimEx II

TAC - collimator position effect Don’t have this for PrimEx II

TAC – collimator size effects Fig 11

Two methods – out of time method and clock trigger Electron counting Two methods – out of time method and clock trigger

Out of Time Method 13

Clock triggers

Pair spectrometer

PS- tagger backgrounds 15

Conclusions on flux We have good experience from PrimEx I TAC runs – probably not all tests reproduced in PrimEx II, but this is probably not a problem Electron counting – similar analysis Pair spectrometer – similar analysis