SLAC Magnetic Measurements Date: 08-24-2004 Time: 13:19:18 Project: HHCalib Magnet Type: Calibrate Magnet Name: Coil_Davis4 Serial Number: Run Number: 16 Measurement Device: Helmholtz coil Operator: sa Comment: 4th Davis run calib. 2 A. 13:19:20 Initial Zero Current Measurement, Imag_zero = 0.0000 A 13:19:20 Temperature Measurement Device(s) Being Used, type = YSI44036_HP3457 13:19:32 Begin Helmholtz Coil Measurement Helmholtz coil measurement: 13:20:02 VT Harmonics Measurement rot_dir = +, num_rev = 8 i vthar_re[i] vthar_im[i] vthar_mag[i] vthar_ph[i] (Vs) (Vs) (Vs) (deg) --- ------------ ------------ ------------ ------------ 1 0.0012597 -0.0000196 0.0012598 -0.8920112 2 0.0000014 0.0000002 0.0000014 8.2196673 3 -0.0000001 0.0000002 0.0000002 109.2334764 4 -0.0000005 0.0000005 0.0000007 136.7140862 5 -0.0000009 0.0000004 0.0000010 155.5887873 6 -0.0000007 0.0000006 0.0000009 140.7928839 7 -0.0000003 0.0000005 0.0000006 123.9804195 8 -0.0000003 -0.0000005 0.0000006 -122.0165198 9 -0.0000016 0.0000011 0.0000019 145.5584457 10 -0.0000013 0.0000020 0.0000023 122.9829265 13:20:19 VT Harmonics Measurement rot_dir = -, num_rev = 8 i vthar_re[i] vthar_im[i] vthar_mag[i] vthar_ph[i] (Vs) (Vs) (Vs) (deg) --- ------------ ------------ ------------ ------------ 1 0.0012599 0.0000279 0.0012602 1.2701524 2 -0.0000028 -0.0000001 0.0000028 -177.5978579 3 -0.0000006 -0.0000005 0.0000007 -141.8560975 4 -0.0000004 -0.0000003 0.0000005 -143.9417834 5 -0.0000005 0.0000000 0.0000005 179.7969810 6 -0.0000006 0.0000002 0.0000006 163.5053021 7 -0.0000006 -0.0000003 0.0000007 -152.3972536 8 -0.0000015 -0.0000004 0.0000015 -164.1840536 9 -0.0000008 0.0000009 0.0000013 132.0610656 10 -0.0000005 0.0000009 0.0000011 118.0912249 13:20:35 VT Harmonics Measurement rot_dir = +, num_rev = 8 i vthar_re[i] vthar_im[i] vthar_mag[i] vthar_ph[i] (Vs) (Vs) (Vs) (deg) --- ------------ ------------ ------------ ------------ 1 0.0012602 -0.0000190 0.0012604 -0.8626156 2 0.0000023 0.0000004 0.0000024 10.8811984 3 0.0000014 0.0000008 0.0000016 31.6266787 4 0.0000012 0.0000006 0.0000014 24.7781564 5 0.0000006 0.0000005 0.0000008 37.0798864 6 0.0000011 0.0000010 0.0000015 43.9975674 7 0.0000014 0.0000011 0.0000018 38.1623935 8 0.0000005 0.0000001 0.0000005 8.4579502 9 0.0000009 0.0000018 0.0000020 62.4143343 10 0.0000018 0.0000021 0.0000027 49.0275881 13:20:52 VT Harmonics Measurement rot_dir = -, num_rev = 8 i vthar_re[i] vthar_im[i] vthar_mag[i] vthar_ph[i] (Vs) (Vs) (Vs) (deg) --- ------------ ------------ ------------ ------------ 1 0.0012601 0.0000282 0.0012605 1.2828832 2 -0.0000021 0.0000002 0.0000021 173.8160071 3 0.0000001 -0.0000001 0.0000002 -44.8661730 4 0.0000002 -0.0000001 0.0000002 -14.8367398 5 0.0000001 0.0000002 0.0000002 74.7034882 6 0.0000002 0.0000004 0.0000004 63.1597100 7 0.0000003 0.0000001 0.0000003 15.6764447 8 -0.0000007 0.0000002 0.0000007 161.1491483 9 -0.0000002 0.0000015 0.0000016 97.6811476 10 0.0000006 0.0000012 0.0000013 60.9956842 13:20:52 Integrated Voltage Harmonics, Average and RMS of Measurements n vthar_re[i] svthar_re[i] vthar_im[i] svthar_im[i] (Vs) (Vs) (Vs) (Vs) --- ------------ ------------ ------------ ------------ 1 0.0012600 0.0000002 0.0000044 0.0000002 2 -0.0000003 0.0000004 0.0000002 0.0000001 3 0.0000002 0.0000005 0.0000001 0.0000002 4 0.0000001 0.0000006 0.0000002 0.0000001 5 -0.0000002 0.0000005 0.0000003 0.0000001 6 -0.0000000 0.0000006 0.0000005 0.0000002 7 0.0000002 0.0000007 0.0000003 0.0000003 8 -0.0000005 0.0000004 -0.0000001 0.0000003 9 -0.0000004 0.0000008 0.0000013 0.0000003 10 0.0000002 0.0000011 0.0000015 0.0000001 13:20:52 Magnetic Moment Calculation Helmholtz Coil Radius, R = 0.493357 m Helmholtz Coil Number Of Turns, N = 3045 Geometry Factor, G = 1.397540 m vthar_re_ave = 1.259995e-03 Vs vthar_im_ave = 4.391696e-06 Vs mm_re_ave = 2.853035e-07 Tm^3 mm_im_ave = 9.944215e-10 Tm^3 13:20:52 Magnetic Moment Measurement M = 2.853052e-07 +- 4.477079e-11 Tm^3 Theta = -0.199703 +- 0.010499 deg 13:20:54 Temperature Measurement, Probe Number = 0, T = 20.988607 C 13:20:56 Temperature Measurement, Probe Number = 1, T = 20.657503 C 13:20:57 Magnet Current, Imag = 2.0211 A Vtrans = 1.010550 V, Factor V/A = 0.500000 V/A, Zero Current = 0.000000 A 13:20:59 Magnet Current, Imag = 2.0211 A Vtrans = 1.010543 V, Factor V/A = 0.500000 V/A, Zero Current = 0.000000 A 13:21:00 Magnet Current, Imag = 2.0211 A Vtrans = 1.010533 V, Factor V/A = 0.500000 V/A, Zero Current = 0.000000 A 13:21:01 Magnet Current, Imag = 2.0211 A Vtrans = 1.010536 V, Factor V/A = 0.500000 V/A, Zero Current = 0.000000 A 13:21:01 Magnet Current Measurement: Imag = 2.0211 +- 0.0000 A 13:21:01 Calibration Coil Magnetic Moment Measurement Coil current, I = 2.021081 +/- 0.000013 A Coil area, A = 0.111860 m^2 Magnetic Moment, M = 2.840981e-07 Tm^3