We need to provide the “Experimental Interface Group” with numbers for Mu 2 e running. Basically the maximum instantaneous rate that the experiment can handle. This will go into the decision for the mode of operation for the 8 Ge. V program associated with Project X Ie, whether to include a stretcher/buncher ring as part of the package (Could be accumulator/debuncher or other) E. Prebys –mu 2 e meeting 4/23/08
If slow extraction can work at all from the Recycler, it certainly can’t work with more than one “blast” (I’m going to try to make that term stick) at at time. 1 “blast” = 9 m. A*1 ms = 5. 6 e 13 (protons)/(1. 4 s cycle) =4 e 13 p/s on average (!!) = 50 k. W average beam power = 8 e 20/yr (2 e 7 seconds) Compare to baseline proposal 6*4 e 12 protons/(1. 33 s NOv. A cycle) = 1. 8 e 13 p/s on average = 23 k. W average beam power = 3. 6 e 20 Modes of operation considered All “extra” blasts, extracted one at a time 4 in 800 ms = 57% duty factor 1 blast in 200 ms (sharing) = 14% duty factor 1 blast in 800 ms (timeline hog) = 57% duty factor E. Prebys –mu 2 e meeting 4/23/08
Mode Duty Factor Phase 1 Peak Rate protons/s k. W Average Rate rel to Phase I k. W p/year rel. to Phase I 100% 1. 8 E+13 23 1. 0 23 3. 6 E+20 1. 0 1 in 200 ms 14% 2. 8 E+14 360 15. 6 51 8. 0 E+20 2. 2 1 in 800 ms 57% 7. 0 E+13 90 3. 9 51 8. 0 E+20 2. 2 4 in 800 ms 57% 2. 8 E+14 360 15. 6 206 3. 2 E+21 8. 9 Need to have a party line about where the Mu 2 e detector gets in trouble with this. E. Prebys –mu 2 e meeting 4/23/08