~sober/manuals/tagger_current.txt Last rev. 25 April 1998 This file contains nominal tagger magnet currents for the 5 standard energies and 2 higher energies (0.845, 1.645, 2.445, 3.245, 4.045, 5.045, 6.045 GeV) as well as small changes in steps of 0.1% Hitting the center of the beam dump (5 mm above the center of the bullseye) requires a magnet current approximately 0.5% below the nominal value. The current for other energies can be calculated using the program ~sober/manuals/tagcurr (source code tagger.f). ===================================================================== Pass 1 (0.845 GeV) Currents for % differences from E_nominal = 0.8450 GeV E = 0.8366 GeV I = 278.89 A -1.000% E = 0.8374 GeV I = 279.17 A -0.900% E = 0.8382 GeV I = 279.45 A -0.800% E = 0.8391 GeV I = 279.74 A -0.700% E = 0.8399 GeV I = 280.02 A -0.600% E = 0.8408 GeV I = 280.30 A -0.500% E = 0.8416 GeV I = 280.58 A -0.400% E = 0.8425 GeV I = 280.86 A -0.300% E = 0.8433 GeV I = 281.14 A -0.200% E = 0.8442 GeV I = 281.42 A -0.100% E = 0.8450 GeV I = 281.71 A 0.000% E = 0.8458 GeV I = 281.99 A +0.100% E = 0.8467 GeV I = 282.27 A +0.200% E = 0.8475 GeV I = 282.55 A +0.300% E = 0.8484 GeV I = 282.83 A +0.400% E = 0.8492 GeV I = 283.11 A +0.500% E = 0.8501 GeV I = 283.39 A +0.600% E = 0.8509 GeV I = 283.67 A +0.700% E = 0.8518 GeV I = 283.96 A +0.800% E = 0.8526 GeV I = 284.24 A +0.900% E = 0.8535 GeV I = 284.52 A +1.000% One table step = 0.100% => approximately 10.5 mm displacement at the tagger dump. ===================================================================== Pass 2 (1.645 GeV) Currents for % differences from E_nominal = 1.6450 GeV E = 1.6286 GeV I = 543.85 A -1.000% E = 1.6302 GeV I = 544.40 A -0.900% E = 1.6318 GeV I = 544.95 A -0.800% E = 1.6335 GeV I = 545.51 A -0.700% E = 1.6351 GeV I = 546.06 A -0.600% E = 1.6368 GeV I = 546.61 A -0.500% E = 1.6384 GeV I = 547.17 A -0.400% E = 1.6401 GeV I = 547.72 A -0.300% E = 1.6417 GeV I = 548.27 A -0.200% E = 1.6434 GeV I = 548.83 A -0.100% E = 1.6450 GeV I = 549.38 A +0.000% E = 1.6466 GeV I = 549.93 A +0.100% E = 1.6483 GeV I = 550.48 A +0.200% E = 1.6499 GeV I = 551.04 A +0.300% E = 1.6516 GeV I = 551.59 A +0.400% E = 1.6532 GeV I = 552.14 A +0.500% E = 1.6549 GeV I = 552.70 A +0.600% E = 1.6565 GeV I = 553.25 A +0.700% E = 1.6582 GeV I = 553.80 A +0.800% E = 1.6598 GeV I = 554.36 A +0.900% E = 1.6615 GeV I = 554.91 A +1.000% One table step = 0.100% => approximately 10.5 mm displacement at the tagger dump. ===================================================================== Pass 3 (2.445 GeV) Currents for % differences from E_nominal = 2.4450 GeV E = 2.4205 GeV I = 810.90 A -1.000% E = 2.4230 GeV I = 811.72 A -0.900% E = 2.4254 GeV I = 812.55 A -0.800% E = 2.4279 GeV I = 813.37 A -0.700% E = 2.4303 GeV I = 814.20 A -0.600% E = 2.4328 GeV I = 815.02 A -0.500% E = 2.4352 GeV I = 815.84 A -0.400% E = 2.4377 GeV I = 816.67 A -0.300% E = 2.4401 GeV I = 817.49 A -0.200% E = 2.4426 GeV I = 818.32 A -0.100% E = 2.4450 GeV I = 819.14 A 0.000% E = 2.4474 GeV I = 819.96 A +0.100% E = 2.4499 GeV I = 820.79 A +0.200% E = 2.4523 GeV I = 821.61 A +0.300% E = 2.4548 GeV I = 822.43 A +0.400% E = 2.4572 GeV I = 823.26 A +0.500% E = 2.4597 GeV I = 824.08 A +0.600% E = 2.4621 GeV I = 824.91 A +0.700% E = 2.4646 GeV I = 825.73 A +0.800% E = 2.4670 GeV I = 826.55 A +0.900% E = 2.4694 GeV I = 827.38 A +1.000% One table step = 0.100% => approximately 10.5 mm displacement at the tagger dump. ===================================================================== Pass 4 (3.245 GeV) Currents for % differences from E_nominal = 3.2450 GeV E = 3.2125 GeV I = 1079.62 A -1.000% E = 3.2158 GeV I = 1080.74 A -0.900% E = 3.2190 GeV I = 1081.85 A -0.800% E = 3.2223 GeV I = 1082.97 A -0.700% E = 3.2255 GeV I = 1084.09 A -0.600% E = 3.2288 GeV I = 1085.20 A -0.500% E = 3.2320 GeV I = 1086.32 A -0.400% E = 3.2353 GeV I = 1087.43 A -0.300% E = 3.2385 GeV I = 1088.55 A -0.200% E = 3.2418 GeV I = 1089.67 A -0.100% E = 3.2450 GeV I = 1090.78 A 0.000% E = 3.2482 GeV I = 1091.90 A +0.100% E = 3.2515 GeV I = 1093.01 A +0.200% E = 3.2547 GeV I = 1094.13 A +0.300% E = 3.2580 GeV I = 1095.25 A +0.400% E = 3.2612 GeV I = 1096.36 A +0.500% E = 3.2645 GeV I = 1097.48 A +0.600% E = 3.2677 GeV I = 1098.60 A +0.700% E = 3.2710 GeV I = 1099.71 A +0.800% E = 3.2742 GeV I = 1100.83 A +0.900% E = 3.2774 GeV I = 1101.95 A +1.000% One table step = 0.100% => approximately 10.5 mm displacement at the tagger dump. ===================================================================== Pass 5 (4.045 GeV) Currents for % differences from E_nominal = 4.0450 GeV E = 4.0045 GeV I = 1352.35 A -1.000% E = 4.0086 GeV I = 1353.73 A -0.900% E = 4.0126 GeV I = 1355.11 A -0.800% E = 4.0167 GeV I = 1356.49 A -0.700% E = 4.0207 GeV I = 1357.88 A -0.600% E = 4.0248 GeV I = 1359.26 A -0.500% E = 4.0288 GeV I = 1360.64 A -0.400% E = 4.0329 GeV I = 1362.02 A -0.300% E = 4.0369 GeV I = 1363.40 A -0.200% E = 4.0410 GeV I = 1364.79 A -0.100% E = 4.0450 GeV I = 1366.17 A 0.000% E = 4.0490 GeV I = 1367.55 A +0.100% E = 4.0531 GeV I = 1368.93 A +0.200% E = 4.0571 GeV I = 1370.31 A +0.300% E = 4.0612 GeV I = 1371.69 A +0.400% E = 4.0652 GeV I = 1373.07 A +0.500% E = 4.0693 GeV I = 1374.45 A +0.600% E = 4.0733 GeV I = 1375.83 A +0.700% E = 4.0774 GeV I = 1377.21 A +0.800% E = 4.0814 GeV I = 1378.59 A +0.900% E = 4.0855 GeV I = 1379.96 A +1.000% One table step = 0.100% => approximately 10.5 mm displacement at the tagger dump. ===================================================================== Pass 5' (5.045 GeV) Currents for % differences from E_nominal = 5.0450 GeV E = 4.9946 GeV I = 1712.01 A -1.000% E = 4.9996 GeV I = 1714.18 A -0.900% E = 5.0046 GeV I = 1716.35 A -0.800% E = 5.0097 GeV I = 1718.53 A -0.700% E = 5.0147 GeV I = 1720.72 A -0.600% E = 5.0198 GeV I = 1722.91 A -0.500% E = 5.0248 GeV I = 1725.10 A -0.400% E = 5.0299 GeV I = 1727.30 A -0.300% E = 5.0349 GeV I = 1729.51 A -0.200% E = 5.0400 GeV I = 1731.73 A -0.100% E = 5.0450 GeV I = 1733.95 A 0.000% E = 5.0500 GeV I = 1736.17 A +0.100% E = 5.0551 GeV I = 1738.41 A +0.200% E = 5.0601 GeV I = 1740.65 A +0.300% E = 5.0652 GeV I = 1742.89 A +0.400% E = 5.0702 GeV I = 1745.14 A +0.500% E = 5.0753 GeV I = 1747.40 A +0.600% E = 5.0803 GeV I = 1749.66 A +0.700% E = 5.0854 GeV I = 1751.93 A +0.800% E = 5.0904 GeV I = 1754.21 A +0.900% E = 5.0955 GeV I = 1756.50 A +1.000% One table step = 0.100% => approximately 10.5 mm displacement at the tagger dump. ===================================================================== Pass 5'' (6.045 GeV) Currents for % differences from E_nominal = 6.0450 GeV E = 5.9845 GeV I = 2290.08 A -1.000% E = 5.9906 GeV I = 2294.88 A -0.900% E = 5.9966 GeV I = 2299.70 A -0.800% E = 6.0027 GeV I = 2304.53 A -0.700% E = 6.0087 GeV I = 2309.37 A -0.600% E = 6.0148 GeV I = 2314.22 A -0.500% E = 6.0208 GeV I = 2319.08 A -0.400% E = 6.0269 GeV I = 2323.95 A -0.300% E = 6.0329 GeV I = 2328.82 A -0.200% E = 6.0390 GeV I = 2333.71 A -0.100% E = 6.0450 GeV I = 2338.60 A 0.000% E = 6.0510 GeV I = 2343.50 A +0.100% E = 6.0571 GeV I = 2348.40 A +0.200% E = 6.0631 GeV I = 2353.31 A +0.300% E = 6.0692 GeV I = 2358.23 A +0.400% E = 6.0752 GeV I = 2363.15 A +0.500% E = 6.0813 GeV I = 2368.08 A +0.600% E = 6.0873 GeV I = 2373.00 A +0.700% E = 6.0934 GeV I = 2377.94 A +0.800% E = 6.0994 GeV I = 2382.87 A +0.900% E = 6.1055 GeV I = 2387.81 A +1.000% One table step = 0.100% => approximately 10.5 mm displacement at the tagger dump. ==================================================================== Energy for maximum power supply current: I = 2400.00 A E = 6.1204 GeV