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#### Entry number 382766

keyword=An Estimate of Where We Are

Given that we have run at significantly less than the optimal 75% polarization in the run plan, I have endeavored to figure out how many more events we need for our present momentum settings. With the left arm, we have taken (up to run 5759) 32 M at Pt~73%, 105.4 M at Pt~70%, 99.9 M at Pt~68%, 12.3 M at Pt~65%, and 56M at Pt~74%. That comes to 305.6 M events at these various target polarizations. Scaling these for the optimal 75%, I got that we have the equivalent of 267.5 M events. We are supposed to have 382 M events in this momentum setting (at Pt=75%). That gives us 114.6 M events to go at 75%. But we are presently at Pt~73%. Adjusting for this, I get that have 121.4 M to go for this momentum setting, for a total of 427.0 events.

For the right arm, we have taken (up to run 24467) 21.4 M at Pt~70%, 65.8 M at Pt~68%, 8.7 M at Pt~65%, and 37.6 M at Pt~74%. That comes to 133.5 M events at these various target polarizations. Scaling these for the optimal 75%, I got that we have the equivalent of 115.5 M events. We are supposed to have 182.7 M (2/3 of 274 M) events in this momentum setting (at Pt=75%). That gives us 67.2 M events to go at 75%. But we are presently at Pt~73%. Adjusting for this, I get that have 71.2 M to go for this momentum setting, for a total of 204.7 events.

That's my present guesstimate!