Dear Kevin, I agree that we should use the 50x50 MeV^2 bins in q and omega. Plan conservatively. Your rates agree reasonably well with my seat-of-the-pants guesses for beam time. I have added two columns to your table for Time (from my wish-list of beam time) and total counts. I assume a minimum counting time of 4 hours. The total counting time for bite 1 (not including spectrometer moving and calibrations) is 480 hours (20 days). This includes two days of exploratory counting at Q1 and R1. This does not include ANY deep missing energy exploration. Your s-shell rates are useless beyond 8 degrees (but you knew that). If I use 10^-3 nb/MeV^2-sr^2 for the continuum cross section (as NL sees at 16 and 20 degrees), then I get Rate = 10^-36 cm^2/MeV^2-sr^2 * (100uA/1.6 10^-13 e-/uC) * 0.5 g/cm^2 * (6*10^23 nucleons/g / (18 nucleons/H2O)) * (0.006 sr)^2 * 50 MeV (omega accept) * 5 MeV (Emiss bin) = 0.1/s-bin = 360 / hr-(5 MeV bin) Our statistics for all but the last two points (A/P and B/O) should be great (<2%). At the last two points, it will be somewhat worse. I do not trust the rates for A1/B1/O1/P1. The deep missing energy runs, assuming sigma = 1 pb, and using 10 MeV bins beyond 60 MeV, will take 12 hours to get about 8,000 counts per bin (12*720 = 8000). This means two days per theta_pq (2 extra missing energy bites times two HRS angles times 12 hours) or 6-8 more days. I would like to see this done at least at 4 and 20 degrees. I do not see anywhere obvious to save time. We could shave a day from kinematics O1 if we believe the calculations. We could plan to save two days during the real measurement after we find out what the real rates are online. Total time: 18 days LT valence separation 2 days large theta_pq exploration 4-8 days large missing energy exploration ?? days norm/calib/change spectrometer field/angle Larry p12 rates VO U Time(hr) Counts A1 3.9040E-02 4.7512E+01 100 5000 B1 7.6927E-01 2.0632E+01 75 1500 C1 1.1801E+02 1.2863E+02 50 6500 D1 2.2038E+03 4.4076E+02 25 10000 E1 1.8205E+04 7.4641E+03 4 10000 F1 7.7216E+04 4.7102E+04 4 10000 G1 1.2075E+05 8.2110E+04 4 10000 H1 1.4790E+05 1.0501E+05 4 10000 I1 1.8648E+05 1.0816E+05 4 10000 J1 1.6739E+05 1.0043E+05 4 10000 K1 1.2156E+05 6.9289E+04 4 10000 L1 3.6213E+04 1.4485E+04 4 10000 M1 5.5417E+03 9.9751E+02 25 25000 N1 4.0027E+02 1.1208E+02 50 5000 O1 3.8995E+00 2.6341E+02 75 20000 (!) P1 3.4655E-01 9.8697E+00 100 1000 p32 rates A1 2.4362E+00 3.3132E+00 100 300 B1 4.8421E+00 1.2827E+02 75 10000 C1 5.4441E+02 2.0688E+02 50 10000 D1 7.3759E+03 5.9010E+02 25 15000 E1 4.5244E+04 1.4478E+04 4 10000 F1 1.4401E+05 8.3526E+04 4 10000 G1 1.9288E+05 1.3309e+05 4 10000 H1 2.1019E+05 1.6815E+05 4 10000 I1 2.6327E+05 1.9219E+05 4 10000 J1 2.6072E+05 2.0336E+05 4 10000 K1 2.1057E+05 1.5793E+05 4 10000 L1 8.0209E+04 4.7323E+04 4 10000 M1 1.6133E+04 4.8399E+03 25 100000 N1 1.4745E+03 2.2118E+02 50 10000 O1 2.2920E+01 1.7305E+02 75 10000 P1 1.0032E+01 1.4546E+01 100 1500 s12 rates A1 3.0441E-01 2.5692E+00 100 36000 * My continuum calculation B1 1.7400E+00 2.2968E+00 75 27000 * C1 3.3685E+01 3.1327E+01 50 18000 * D1 9.2787E+02 7.4230E+01 25 9000 * E1 9.1437E+03 7.3150E+02 4 1400 * F1 4.5420E+04 1.0901E+04 4 10000 G1 8.1517E+04 2.7716E+04 4 10000 H1 1.2312E+05 5.4173E+04 4 10000 I1 1.2690E+05 9.6444E+04 4 10000 J1 8.6594E+04 6.4946E+04 4 10000 K1 4.9318E+04 3.5016E+04 4 10000 L1 1.0261E+04 4.8227E+03 4 1400 * M1 1.0560E+03 1.9008E+02 25 9000 * N1 3.3827E+01 9.9451E+01 50 18000 * O1 5.6719E+00 1.7980E+01 75 27000 * P1 6.6142E-01 2.6258E+00 100 36000 * kin VO U 50 MeV X 50 MeV/c in omega and q VO is Van Orden U is Udias all rates are per hour