SLAC Magnetic Measurements Date: 06-24-2003 Time: 11:18:55 Project: Knute Magnet Type: Permeameter Magnet Name: Ring4 Serial Number: Run Number: 1 Measurement Device: permeameter Operator: sa Comment: Single Ring of tungsten Standardization: 3 cycles from -8.0 A to 8.0 A to -8.0 A Test Currents (A): 0.0 0.2 0.4 0.6 0.8 1.0 2.0 4.0 6.0 8.0 6.0 4.0 2.0 1.0 0.8 0.6 0.4 0.2 0.0 -0.2 -0.4 -0.6 -0.8 -1.0 -2.0 -4.0 -6.0 -8.0 -6.0 -4.0 -2.0 -1.0 -0.8 -0.6 -0.4 -0.2 0.0 11:19:00 Initial Zero Current Measurement, Imag_zero = 0.0000 A 11:19:00 Magnet current ramping to 8.0000 A... 11:19:45 Magnet current ramping to -8.0000 A... 11:21:10 Magnet current ramping to 8.0000 A... 11:22:35 Magnet current ramping to -8.0000 A... 11:24:00 Magnet current ramping to 8.0000 A... 11:25:26 Magnet current ramping to -8.0000 A... 11:26:51 Magnet current ramping to 0.0000 A... 11:27:36 Hysteresis Loop Measurement Sample Geometry: ring 11:27:36 Integrated Voltage Measurement... 11:27:37 Magnet current ramping to 0.0000 A... 11:27:56 Voltage Offset Correction: v_off_ini = -0.000003052 V, v_off_fin = -0.000002993 V 11:27:56 Integrated Voltage Measurement Imag = 0.0000 A VT = 0.000001705 Vs 11:27:58 Magnet Current, Imag = -0.0002 A Vtrans = -0.000016 V, Factor V/A = 0.080000 V/A, Zero Current = 0.000000 A 11:27:58 Calculate delta B and H from the ring Ifin_meas = -0.000204 A VT = 1.704918e-06 V sec N_turns_coil = 200 delta_flux_1_turn = 8.524591e-09 V sec sample_area = 2.669995e-05 m^2 delta_B = 6.385474e-04 T H_fin = -1.967317e-01 A/m 11:27:58 Measured H and B values: H = -0.196732 A/m B = 0.000639 T 11:27:58 Integrated Voltage Measurement... 11:27:59 Magnet current ramping to 0.2000 A... 11:28:19 Voltage Offset Correction: v_off_ini = -0.000003083 V, v_off_fin = -0.000003292 V 11:28:19 Integrated Voltage Measurement Imag = 0.2000 A VT = 0.000001181 Vs 11:28:21 Magnet Current, Imag = 0.2035 A Vtrans = 0.016277 V, Factor V/A = 0.080000 V/A, Zero Current = 0.000000 A 11:28:21 Calculate delta B and H from the ring Ifin_meas = 0.203457 A VT = 1.181267e-06 V sec N_turns_coil = 200 delta_flux_1_turn = 5.906334e-09 V sec sample_area = 2.669995e-05 m^2 delta_B = 4.424229e-04 T H_fin = 1.960881e+02 A/m 11:28:21 Measured H and B values: H = 196.088147 A/m B = 0.001081 T 11:28:21 Integrated Voltage Measurement... 11:28:22 Magnet current ramping to 0.4000 A... 11:28:42 Voltage Offset Correction: v_off_ini = -0.000003173 V, v_off_fin = -0.000003113 V 11:28:42 Integrated Voltage Measurement Imag = 0.4000 A VT = -0.000000823 Vs 11:28:44 Magnet Current, Imag = 0.4069 A Vtrans = 0.032555 V, Factor V/A = 0.080000 V/A, Zero Current = 0.000000 A 11:28:44 Calculate delta B and H from the ring Ifin_meas = 0.406941 A VT = -8.230762e-07 V sec N_turns_coil = 200 delta_flux_1_turn = -4.115381e-09 V sec sample_area = 2.669995e-05 m^2 delta_B = -3.082689e-04 T H_fin = 3.922021e+02 A/m 11:28:44 Measured H and B values: H = 392.202075 A/m B = 0.000773 T 11:28:44 Integrated Voltage Measurement... 11:28:45 Magnet current ramping to 0.6000 A... 11:29:05 Voltage Offset Correction: v_off_ini = -0.000003292 V, v_off_fin = -0.000003352 V 11:29:05 Integrated Voltage Measurement Imag = 0.6000 A VT = 0.000002401 Vs 11:29:07 Magnet Current, Imag = 0.6111 A Vtrans = 0.048891 V, Factor V/A = 0.080000 V/A, Zero Current = 0.000000 A 11:29:07 Calculate delta B and H from the ring Ifin_meas = 0.611143 A VT = 2.401076e-06 V sec N_turns_coil = 200 delta_flux_1_turn = 1.200538e-08 V sec sample_area = 2.669995e-05 m^2 delta_B = 8.992813e-04 T H_fin = 5.890073e+02 A/m 11:29:07 Measured H and B values: H = 589.007274 A/m B = 0.001672 T 11:29:07 Integrated Voltage Measurement... 11:29:08 Magnet current ramping to 0.8000 A... 11:29:28 Voltage Offset Correction: v_off_ini = -0.000003532 V, v_off_fin = -0.000003412 V 11:29:28 Integrated Voltage Measurement Imag = 0.8000 A VT = 0.000002246 Vs 11:29:30 Magnet Current, Imag = 0.8178 A Vtrans = 0.065426 V, Factor V/A = 0.080000 V/A, Zero Current = 0.000000 A 11:29:31 Calculate delta B and H from the ring Ifin_meas = 0.817823 A VT = 2.245848e-06 V sec N_turns_coil = 200 delta_flux_1_turn = 1.122924e-08 V sec sample_area = 2.669995e-05 m^2 delta_B = 8.411431e-04 T H_fin = 7.882014e+02 A/m 11:29:31 Measured H and B values: H = 788.201445 A/m B = 0.002513 T 11:29:31 Integrated Voltage Measurement... 11:29:31 Magnet current ramping to 1.0000 A... 11:29:52 Voltage Offset Correction: v_off_ini = -0.000003352 V, v_off_fin = -0.000003412 V 11:29:52 Integrated Voltage Measurement Imag = 1.0000 A VT = 0.000002426 Vs 11:29:53 Magnet Current, Imag = 1.0201 A Vtrans = 0.081612 V, Factor V/A = 0.080000 V/A, Zero Current = 0.000000 A 11:29:53 Calculate delta B and H from the ring Ifin_meas = 1.020145 A VT = 2.426076e-06 V sec N_turns_coil = 200 delta_flux_1_turn = 1.213038e-08 V sec sample_area = 2.669995e-05 m^2 delta_B = 9.086446e-04 T H_fin = 9.831959e+02 A/m 11:29:54 Measured H and B values: H = 983.195942 A/m B = 0.003422 T 11:29:54 Integrated Voltage Measurement... 11:29:54 Magnet current ramping to 2.0000 A... 11:30:20 Voltage Offset Correction: v_off_ini = -0.000003474 V, v_off_fin = -0.000003594 V 11:30:20 Integrated Voltage Measurement Imag = 2.0000 A VT = 0.000008005 Vs 11:30:22 Magnet Current, Imag = 2.0394 A Vtrans = 0.163150 V, Factor V/A = 0.080000 V/A, Zero Current = 0.000000 A 11:30:22 Calculate delta B and H from the ring Ifin_meas = 2.039375 A VT = 8.005119e-06 V sec N_turns_coil = 200 delta_flux_1_turn = 4.002560e-08 V sec sample_area = 2.669995e-05 m^2 delta_B = 2.998178e-03 T H_fin = 1.965510e+03 A/m 11:30:22 Measured H and B values: H = 1965.510025 A/m B = 0.006420 T 11:30:22 Integrated Voltage Measurement... 11:30:23 Magnet current ramping to 4.0000 A... 11:30:54 Voltage Offset Correction: v_off_ini = -0.000003595 V, v_off_fin = -0.000003175 V 11:30:54 Integrated Voltage Measurement Imag = 4.0000 A VT = 0.000012836 Vs 11:30:56 Magnet Current, Imag = 4.0839 A Vtrans = 0.326716 V, Factor V/A = 0.080000 V/A, Zero Current = 0.000000 A 11:30:56 Calculate delta B and H from the ring Ifin_meas = 4.083950 A VT = 1.283567e-05 V sec N_turns_coil = 200 delta_flux_1_turn = 6.417836e-08 V sec sample_area = 2.669995e-05 m^2 delta_B = 4.807377e-03 T H_fin = 3.936032e+03 A/m 11:30:56 Measured H and B values: H = 3936.031709 A/m B = 0.011227 T 11:30:56 Integrated Voltage Measurement... 11:30:57 Magnet current ramping to 6.0000 A... 11:31:28 Voltage Offset Correction: v_off_ini = -0.000003505 V, v_off_fin = -0.000003475 V 11:31:28 Integrated Voltage Measurement Imag = 6.0000 A VT = 0.000014633 Vs 11:31:29 Magnet Current, Imag = 6.1256 A Vtrans = 0.490048 V, Factor V/A = 0.080000 V/A, Zero Current = 0.000000 A 11:31:29 Calculate delta B and H from the ring Ifin_meas = 6.125600 A VT = 1.463298e-05 V sec N_turns_coil = 200 delta_flux_1_turn = 7.316488e-08 V sec sample_area = 2.669995e-05 m^2 delta_B = 5.480527e-03 T H_fin = 5.903734e+03 A/m 11:31:29 Measured H and B values: H = 5903.734335 A/m B = 0.016708 T 11:31:29 Integrated Voltage Measurement... 11:31:30 Magnet current ramping to 8.0000 A... 11:32:01 Voltage Offset Correction: v_off_ini = -0.000003355 V, v_off_fin = -0.000003475 V 11:32:01 Integrated Voltage Measurement Imag = 8.0000 A VT = 0.000013367 Vs 11:32:03 Magnet Current, Imag = 8.1682 A Vtrans = 0.653456 V, Factor V/A = 0.080000 V/A, Zero Current = 0.000000 A 11:32:03 Calculate delta B and H from the ring Ifin_meas = 8.168200 A VT = 1.336709e-05 V sec N_turns_coil = 200 delta_flux_1_turn = 6.683547e-08 V sec sample_area = 2.669995e-05 m^2 delta_B = 5.006412e-03 T H_fin = 7.872353e+03 A/m 11:32:03 Measured H and B values: H = 7872.352552 A/m B = 0.021714 T 11:32:03 Integrated Voltage Measurement... 11:32:04 Magnet current ramping to 6.0000 A... 11:32:35 Voltage Offset Correction: v_off_ini = -0.000003295 V, v_off_fin = -0.000003415 V 11:32:35 Integrated Voltage Measurement Imag = 6.0000 A VT = -0.000015134 Vs 11:32:36 Magnet Current, Imag = 6.1251 A Vtrans = 0.490009 V, Factor V/A = 0.080000 V/A, Zero Current = 0.000000 A 11:32:36 Calculate delta B and H from the ring Ifin_meas = 6.125113 A VT = -1.513391e-05 V sec N_turns_coil = 200 delta_flux_1_turn = -7.566953e-08 V sec sample_area = 2.669995e-05 m^2 delta_B = -5.668141e-03 T H_fin = 5.903264e+03 A/m 11:32:36 Measured H and B values: H = 5903.264492 A/m B = 0.016046 T 11:32:36 Integrated Voltage Measurement... 11:32:37 Magnet current ramping to 4.0000 A... 11:33:08 Voltage Offset Correction: v_off_ini = -0.000003355 V, v_off_fin = -0.000003355 V 11:33:08 Integrated Voltage Measurement Imag = 4.0000 A VT = -0.000012813 Vs 11:33:09 Magnet Current, Imag = 4.0836 A Vtrans = 0.326687 V, Factor V/A = 0.080000 V/A, Zero Current = 0.000000 A 11:33:09 Calculate delta B and H from the ring Ifin_meas = 4.083588 A VT = -1.281300e-05 V sec N_turns_coil = 200 delta_flux_1_turn = -6.406500e-08 V sec sample_area = 2.669995e-05 m^2 delta_B = -4.798886e-03 T H_fin = 3.935682e+03 A/m 11:33:09 Measured H and B values: H = 3935.682338 A/m B = 0.011247 T 11:33:10 Integrated Voltage Measurement... 11:33:10 Magnet current ramping to 2.0000 A... 11:33:41 Voltage Offset Correction: v_off_ini = -0.000003355 V, v_off_fin = -0.000003355 V 11:33:41 Integrated Voltage Measurement Imag = 2.0000 A VT = -0.000013055 Vs 11:33:43 Magnet Current, Imag = 2.0392 A Vtrans = 0.163133 V, Factor V/A = 0.080000 V/A, Zero Current = 0.000000 A 11:33:43 Calculate delta B and H from the ring Ifin_meas = 2.039166 A VT = -1.305500e-05 V sec N_turns_coil = 200 delta_flux_1_turn = -6.527500e-08 V sec sample_area = 2.669995e-05 m^2 delta_B = -4.889523e-03 T H_fin = 1.965309e+03 A/m 11:33:43 Measured H and B values: H = 1965.308836 A/m B = 0.006358 T 11:33:43 Integrated Voltage Measurement... 11:33:44 Magnet current ramping to 1.0000 A... 11:34:10 Voltage Offset Correction: v_off_ini = -0.000003474 V, v_off_fin = -0.000003294 V 11:34:10 Integrated Voltage Measurement Imag = 1.0000 A VT = -0.000007476 Vs 11:34:12 Magnet Current, Imag = 1.0201 A Vtrans = 0.081605 V, Factor V/A = 0.080000 V/A, Zero Current = 0.000000 A 11:34:12 Calculate delta B and H from the ring Ifin_meas = 1.020060 A VT = -7.476179e-06 V sec N_turns_coil = 200 delta_flux_1_turn = -3.738090e-08 V sec sample_area = 2.669995e-05 m^2 delta_B = -2.800073e-03 T H_fin = 9.831140e+02 A/m 11:34:12 Measured H and B values: H = 983.114021 A/m B = 0.003558 T 11:34:12 Integrated Voltage Measurement... 11:34:13 Magnet current ramping to 0.8000 A... 11:34:33 Voltage Offset Correction: v_off_ini = -0.000003352 V, v_off_fin = -0.000003412 V 11:34:33 Integrated Voltage Measurement Imag = 0.8000 A VT = -0.000001254 Vs 11:34:35 Magnet Current, Imag = 0.8178 A Vtrans = 0.065422 V, Factor V/A = 0.080000 V/A, Zero Current = 0.000000 A 11:34:35 Calculate delta B and H from the ring Ifin_meas = 0.817779 A VT = -1.253924e-06 V sec N_turns_coil = 200 delta_flux_1_turn = -6.269619e-09 V sec sample_area = 2.669995e-05 m^2 delta_B = -4.696353e-04 T H_fin = 7.881593e+02 A/m 11:34:35 Measured H and B values: H = 788.159280 A/m B = 0.003088 T 11:34:35 Integrated Voltage Measurement... 11:34:36 Magnet current ramping to 0.6000 A... 11:34:56 Voltage Offset Correction: v_off_ini = -0.000003352 V, v_off_fin = -0.000003412 V 11:34:56 Integrated Voltage Measurement Imag = 0.6000 A VT = -0.000001360 Vs 11:34:58 Magnet Current, Imag = 0.6111 A Vtrans = 0.048887 V, Factor V/A = 0.080000 V/A, Zero Current = 0.000000 A 11:34:58 Calculate delta B and H from the ring Ifin_meas = 0.611086 A VT = -1.359924e-06 V sec N_turns_coil = 200 delta_flux_1_turn = -6.799619e-09 V sec sample_area = 2.669995e-05 m^2 delta_B = -5.093358e-04 T H_fin = 5.889531e+02 A/m 11:34:58 Measured H and B values: H = 588.953062 A/m B = 0.002579 T 11:34:58 Integrated Voltage Measurement... 11:34:59 Magnet current ramping to 0.4000 A... 11:35:19 Voltage Offset Correction: v_off_ini = -0.000003382 V, v_off_fin = -0.000003532 V 11:35:19 Integrated Voltage Measurement Imag = 0.4000 A VT = -0.000001089 Vs 11:35:21 Magnet Current, Imag = 0.4070 A Vtrans = 0.032558 V, Factor V/A = 0.080000 V/A, Zero Current = 0.000000 A 11:35:21 Calculate delta B and H from the ring Ifin_meas = 0.406971 A VT = -1.088809e-06 V sec N_turns_coil = 200 delta_flux_1_turn = -5.444047e-09 V sec sample_area = 2.669995e-05 m^2 delta_B = -4.077946e-04 T H_fin = 3.922310e+02 A/m 11:35:21 Measured H and B values: H = 392.230988 A/m B = 0.002171 T 11:35:21 Integrated Voltage Measurement... 11:35:22 Magnet current ramping to 0.2000 A... 11:35:42 Voltage Offset Correction: v_off_ini = -0.000003412 V, v_off_fin = -0.000003711 V 11:35:42 Integrated Voltage Measurement Imag = 0.2000 A VT = -0.000000295 Vs 11:35:44 Magnet Current, Imag = 0.2035 A Vtrans = 0.016278 V, Factor V/A = 0.080000 V/A, Zero Current = 0.000000 A 11:35:44 Calculate delta B and H from the ring Ifin_meas = 0.203471 A VT = -2.946189e-07 V sec N_turns_coil = 200 delta_flux_1_turn = -1.473095e-09 V sec sample_area = 2.669995e-05 m^2 delta_B = -1.103444e-04 T H_fin = 1.961015e+02 A/m 11:35:44 Measured H and B values: H = 196.101519 A/m B = 0.002061 T 11:35:44 Integrated Voltage Measurement... 11:35:45 Magnet current ramping to 0.0000 A... 11:36:05 Voltage Offset Correction: v_off_ini = -0.000003412 V, v_off_fin = -0.000003532 V 11:36:05 Integrated Voltage Measurement Imag = 0.0000 A VT = -0.000000866 Vs 11:36:07 Magnet Current, Imag = -0.0003 A Vtrans = -0.000020 V, Factor V/A = 0.080000 V/A, Zero Current = 0.000000 A 11:36:07 Calculate delta B and H from the ring Ifin_meas = -0.000253 A VT = -8.658476e-07 V sec N_turns_coil = 200 delta_flux_1_turn = -4.329238e-09 V sec sample_area = 2.669995e-05 m^2 delta_B = -3.242881e-04 T H_fin = -2.441979e-01 A/m 11:36:07 Measured H and B values: H = -0.244198 A/m B = 0.001736 T 11:36:07 Integrated Voltage Measurement... 11:36:08 Magnet current ramping to -0.2000 A... 11:36:28 Voltage Offset Correction: v_off_ini = -0.000003622 V, v_off_fin = -0.000003771 V 11:36:29 Integrated Voltage Measurement Imag = -0.2000 A VT = -0.000001073 Vs 11:36:30 Magnet Current, Imag = -0.2047 A Vtrans = -0.016377 V, Factor V/A = 0.080000 V/A, Zero Current = 0.000000 A 11:36:30 Calculate delta B and H from the ring Ifin_meas = -0.204717 A VT = -1.072809e-06 V sec N_turns_coil = 200 delta_flux_1_turn = -5.364047e-09 V sec sample_area = 2.669995e-05 m^2 delta_B = -4.018021e-04 T H_fin = -1.973020e+02 A/m 11:36:30 Measured H and B values: H = -197.302029 A/m B = 0.001334 T 11:36:30 Integrated Voltage Measurement... 11:36:31 Magnet current ramping to -0.4000 A... 11:36:51 Voltage Offset Correction: v_off_ini = -0.000003532 V, v_off_fin = -0.000003352 V 11:36:52 Integrated Voltage Measurement Imag = -0.4000 A VT = -0.000000869 Vs 11:36:53 Magnet Current, Imag = -0.4084 A Vtrans = -0.032669 V, Factor V/A = 0.080000 V/A, Zero Current = 0.000000 A 11:36:53 Calculate delta B and H from the ring Ifin_meas = -0.408365 A VT = -8.692286e-07 V sec N_turns_coil = 200 delta_flux_1_turn = -4.346143e-09 V sec sample_area = 2.669995e-05 m^2 delta_B = -3.255544e-04 T H_fin = -3.935743e+02 A/m 11:36:53 Measured H and B values: H = -393.574257 A/m B = 0.001009 T 11:36:53 Integrated Voltage Measurement... 11:36:54 Magnet current ramping to -0.6000 A... 11:37:14 Voltage Offset Correction: v_off_ini = -0.000003711 V, v_off_fin = -0.000003412 V 11:37:14 Integrated Voltage Measurement Imag = -0.6000 A VT = -0.000000978 Vs 11:37:16 Magnet Current, Imag = -0.6125 A Vtrans = -0.049003 V, Factor V/A = 0.080000 V/A, Zero Current = 0.000000 A 11:37:16 Calculate delta B and H from the ring Ifin_meas = -0.612531 A VT = -9.783811e-07 V sec N_turns_coil = 200 delta_flux_1_turn = -4.891905e-09 V sec sample_area = 2.669995e-05 m^2 delta_B = -3.664356e-04 T H_fin = -5.903457e+02 A/m 11:37:16 Measured H and B values: H = -590.345725 A/m B = 0.000642 T 11:37:16 Integrated Voltage Measurement... 11:37:17 Magnet current ramping to -0.8000 A... 11:37:38 Voltage Offset Correction: v_off_ini = -0.000003352 V, v_off_fin = -0.000003472 V 11:37:38 Integrated Voltage Measurement Imag = -0.8000 A VT = -0.000002301 Vs 11:37:40 Magnet Current, Imag = -0.8194 A Vtrans = -0.065553 V, Factor V/A = 0.080000 V/A, Zero Current = 0.000000 A 11:37:40 Calculate delta B and H from the ring Ifin_meas = -0.819415 A VT = -2.300848e-06 V sec N_turns_coil = 200 delta_flux_1_turn = -1.150424e-08 V sec sample_area = 2.669995e-05 m^2 delta_B = -8.617424e-04 T H_fin = -7.897363e+02 A/m 11:37:40 Measured H and B values: H = -789.736266 A/m B = -0.000219 T 11:37:40 Integrated Voltage Measurement... 11:37:41 Magnet current ramping to -1.0000 A... 11:38:01 Voltage Offset Correction: v_off_ini = -0.000003771 V, v_off_fin = -0.000003652 V 11:38:01 Integrated Voltage Measurement Imag = -1.0000 A VT = -0.000001588 Vs 11:38:03 Magnet Current, Imag = -1.0219 A Vtrans = -0.081753 V, Factor V/A = 0.080000 V/A, Zero Current = 0.000000 A 11:38:03 Calculate delta B and H from the ring Ifin_meas = -1.021918 A VT = -1.588152e-06 V sec N_turns_coil = 200 delta_flux_1_turn = -7.940762e-09 V sec sample_area = 2.669995e-05 m^2 delta_B = -5.948148e-04 T H_fin = -9.849042e+02 A/m 11:38:03 Measured H and B values: H = -984.904243 A/m B = -0.000814 T 11:38:03 Integrated Voltage Measurement... 11:38:04 Magnet current ramping to -2.0000 A... 11:38:29 Voltage Offset Correction: v_off_ini = -0.000003534 V, v_off_fin = -0.000003474 V 11:38:29 Integrated Voltage Measurement Imag = -2.0000 A VT = -0.000006277 Vs 11:38:31 Magnet Current, Imag = -2.0413 A Vtrans = -0.163304 V, Factor V/A = 0.080000 V/A, Zero Current = 0.000000 A 11:38:31 Calculate delta B and H from the ring Ifin_meas = -2.041301 A VT = -6.277060e-06 V sec N_turns_coil = 200 delta_flux_1_turn = -3.138530e-08 V sec sample_area = 2.669995e-05 m^2 delta_B = -2.350963e-03 T H_fin = -1.967367e+03 A/m 11:38:31 Measured H and B values: H = -1967.366507 A/m B = -0.003165 T 11:38:31 Integrated Voltage Measurement... 11:38:32 Magnet current ramping to -4.0000 A... 11:39:03 Voltage Offset Correction: v_off_ini = -0.000003715 V, v_off_fin = -0.000003355 V 11:39:03 Integrated Voltage Measurement Imag = -4.0000 A VT = -0.000012443 Vs 11:39:05 Magnet Current, Imag = -4.0862 A Vtrans = -0.326893 V, Factor V/A = 0.080000 V/A, Zero Current = 0.000000 A 11:39:05 Calculate delta B and H from the ring Ifin_meas = -4.086162 A VT = -1.244328e-05 V sec N_turns_coil = 200 delta_flux_1_turn = -6.221641e-08 V sec sample_area = 2.669995e-05 m^2 delta_B = -4.660414e-03 T H_fin = -3.938164e+03 A/m 11:39:05 Measured H and B values: H = -3938.164073 A/m B = -0.007825 T 11:39:05 Integrated Voltage Measurement... 11:39:06 Magnet current ramping to -6.0000 A... 11:39:37 Voltage Offset Correction: v_off_ini = -0.000003445 V, v_off_fin = -0.000003655 V 11:39:37 Integrated Voltage Measurement Imag = -6.0000 A VT = -0.000012868 Vs 11:39:38 Magnet Current, Imag = -6.1283 A Vtrans = -0.490264 V, Factor V/A = 0.080000 V/A, Zero Current = 0.000000 A 11:39:38 Calculate delta B and H from the ring Ifin_meas = -6.128300 A VT = -1.286784e-05 V sec N_turns_coil = 200 delta_flux_1_turn = -6.433918e-08 V sec sample_area = 2.669995e-05 m^2 delta_B = -4.819424e-03 T H_fin = -5.906337e+03 A/m 11:39:38 Measured H and B values: H = -5906.336542 A/m B = -0.012645 T 11:39:38 Integrated Voltage Measurement... 11:39:39 Magnet current ramping to -8.0000 A... 11:40:10 Voltage Offset Correction: v_off_ini = -0.000003415 V, v_off_fin = -0.000003535 V 11:40:10 Integrated Voltage Measurement Imag = -8.0000 A VT = -0.000014558 Vs 11:40:12 Magnet Current, Imag = -8.1708 A Vtrans = -0.653661 V, Factor V/A = 0.080000 V/A, Zero Current = 0.000000 A 11:40:12 Calculate delta B and H from the ring Ifin_meas = -8.170763 A VT = -1.455791e-05 V sec N_turns_coil = 200 delta_flux_1_turn = -7.278953e-08 V sec sample_area = 2.669995e-05 m^2 delta_B = -5.452410e-03 T H_fin = -7.874822e+03 A/m 11:40:12 Measured H and B values: H = -7874.822240 A/m B = -0.018097 T 11:40:12 Integrated Voltage Measurement... 11:40:13 Magnet current ramping to -6.0000 A... 11:40:44 Voltage Offset Correction: v_off_ini = -0.000003535 V, v_off_fin = -0.000003835 V 11:40:44 Integrated Voltage Measurement Imag = -6.0000 A VT = 0.000015811 Vs 11:40:45 Magnet Current, Imag = -6.1276 A Vtrans = -0.490210 V, Factor V/A = 0.080000 V/A, Zero Current = 0.000000 A 11:40:45 Calculate delta B and H from the ring Ifin_meas = -6.127625 A VT = 1.581123e-05 V sec N_turns_coil = 200 delta_flux_1_turn = 7.905617e-08 V sec sample_area = 2.669995e-05 m^2 delta_B = 5.921823e-03 T H_fin = -5.905686e+03 A/m 11:40:45 Measured H and B values: H = -5905.685990 A/m B = -0.012175 T 11:40:45 Integrated Voltage Measurement... 11:40:46 Magnet current ramping to -4.0000 A... 11:41:17 Voltage Offset Correction: v_off_ini = -0.000003835 V, v_off_fin = -0.000003415 V 11:41:17 Integrated Voltage Measurement Imag = -4.0000 A VT = 0.000013080 Vs 11:41:19 Magnet Current, Imag = -4.0857 A Vtrans = -0.326854 V, Factor V/A = 0.080000 V/A, Zero Current = 0.000000 A 11:41:19 Calculate delta B and H from the ring Ifin_meas = -4.085675 A VT = 1.307967e-05 V sec N_turns_coil = 200 delta_flux_1_turn = 6.539836e-08 V sec sample_area = 2.669995e-05 m^2 delta_B = 4.898763e-03 T H_fin = -3.937694e+03 A/m 11:41:19 Measured H and B values: H = -3937.694230 A/m B = -0.007277 T 11:41:19 Integrated Voltage Measurement... 11:41:20 Magnet current ramping to -2.0000 A... 11:41:51 Voltage Offset Correction: v_off_ini = -0.000003505 V, v_off_fin = -0.000003475 V 11:41:51 Integrated Voltage Measurement Imag = -2.0000 A VT = 0.000015791 Vs 11:41:53 Magnet Current, Imag = -2.0410 A Vtrans = -0.163281 V, Factor V/A = 0.080000 V/A, Zero Current = 0.000000 A 11:41:53 Calculate delta B and H from the ring Ifin_meas = -2.041012 A VT = 1.579098e-05 V sec N_turns_coil = 200 delta_flux_1_turn = 7.895488e-08 V sec sample_area = 2.669995e-05 m^2 delta_B = 5.914235e-03 T H_fin = -1.967088e+03 A/m 11:41:53 Measured H and B values: H = -1967.088216 A/m B = -0.001362 T 11:41:53 Integrated Voltage Measurement... 11:41:54 Magnet current ramping to -1.0000 A... 11:42:19 Voltage Offset Correction: v_off_ini = -0.000003594 V, v_off_fin = -0.000003474 V 11:42:19 Integrated Voltage Measurement Imag = -1.0000 A VT = 0.000006791 Vs 11:42:21 Magnet Current, Imag = -1.0218 A Vtrans = -0.081747 V, Factor V/A = 0.080000 V/A, Zero Current = 0.000000 A 11:42:21 Calculate delta B and H from the ring Ifin_meas = -1.021837 A VT = 6.790881e-06 V sec N_turns_coil = 200 delta_flux_1_turn = 3.395440e-08 V sec sample_area = 2.669995e-05 m^2 delta_B = 2.543406e-03 T H_fin = -9.848271e+02 A/m 11:42:21 Measured H and B values: H = -984.827141 A/m B = 0.001181 T 11:42:21 Integrated Voltage Measurement... 11:42:22 Magnet current ramping to -0.8000 A... 11:42:42 Voltage Offset Correction: v_off_ini = -0.000003771 V, v_off_fin = -0.000003412 V 11:42:42 Integrated Voltage Measurement Imag = -0.8000 A VT = 0.000001040 Vs 11:42:44 Magnet Current, Imag = -0.8194 A Vtrans = -0.065550 V, Factor V/A = 0.080000 V/A, Zero Current = 0.000000 A 11:42:44 Calculate delta B and H from the ring Ifin_meas = -0.819376 A VT = 1.039543e-06 V sec N_turns_coil = 200 delta_flux_1_turn = 5.197714e-09 V sec sample_area = 2.669995e-05 m^2 delta_B = 3.893426e-04 T H_fin = -7.896989e+02 A/m 11:42:44 Measured H and B values: H = -789.698919 A/m B = 0.001570 T 11:42:44 Integrated Voltage Measurement... 11:42:45 Magnet current ramping to -0.6000 A... 11:43:05 Voltage Offset Correction: v_off_ini = -0.000003382 V, v_off_fin = -0.000003292 V 11:43:05 Integrated Voltage Measurement Imag = -0.6000 A VT = 0.000000591 Vs 11:43:07 Magnet Current, Imag = -0.6125 A Vtrans = -0.048997 V, Factor V/A = 0.080000 V/A, Zero Current = 0.000000 A 11:43:07 Calculate delta B and H from the ring Ifin_meas = -0.612459 A VT = 5.908857e-07 V sec N_turns_coil = 200 delta_flux_1_turn = 2.954428e-09 V sec sample_area = 2.669995e-05 m^2 delta_B = 2.213059e-04 T H_fin = -5.902759e+02 A/m 11:43:07 Measured H and B values: H = -590.275851 A/m B = 0.001792 T 11:43:07 Integrated Voltage Measurement... 11:43:08 Magnet current ramping to -0.4000 A... 11:43:29 Voltage Offset Correction: v_off_ini = -0.000003412 V, v_off_fin = -0.000003472 V 11:43:29 Integrated Voltage Measurement Imag = -0.4000 A VT = 0.000000301 Vs 11:43:30 Magnet Current, Imag = -0.4083 A Vtrans = -0.032666 V, Factor V/A = 0.080000 V/A, Zero Current = 0.000000 A 11:43:30 Calculate delta B and H from the ring Ifin_meas = -0.408324 A VT = 3.010762e-07 V sec N_turns_coil = 200 delta_flux_1_turn = 1.505381e-09 V sec sample_area = 2.669995e-05 m^2 delta_B = 1.127629e-04 T H_fin = -3.935345e+02 A/m 11:43:30 Measured H and B values: H = -393.534502 A/m B = 0.001904 T 11:43:30 Integrated Voltage Measurement... 11:43:31 Magnet current ramping to -0.2000 A... 11:43:52 Voltage Offset Correction: v_off_ini = -0.000003472 V, v_off_fin = -0.000003592 V 11:43:52 Integrated Voltage Measurement Imag = -0.2000 A VT = -0.000000653 Vs 11:43:53 Magnet Current, Imag = -0.2047 A Vtrans = -0.016376 V, Factor V/A = 0.080000 V/A, Zero Current = 0.000000 A 11:43:53 Calculate delta B and H from the ring Ifin_meas = -0.204694 A VT = -6.528476e-07 V sec N_turns_coil = 200 delta_flux_1_turn = -3.264238e-09 V sec sample_area = 2.669995e-05 m^2 delta_B = -2.445127e-04 T H_fin = -1.972805e+02 A/m 11:43:53 Measured H and B values: H = -197.280464 A/m B = 0.001660 T 11:43:54 Integrated Voltage Measurement... 11:43:54 Magnet current ramping to 0.0000 A... 11:44:15 Voltage Offset Correction: v_off_ini = -0.000003711 V, v_off_fin = -0.000003592 V 11:44:15 Integrated Voltage Measurement Imag = 0.0000 A VT = 0.000001867 Vs 11:44:16 Magnet Current, Imag = -0.0003 A Vtrans = -0.000023 V, Factor V/A = 0.080000 V/A, Zero Current = 0.000000 A 11:44:16 Calculate delta B and H from the ring Ifin_meas = -0.000292 A VT = 1.866848e-06 V sec N_turns_coil = 200 delta_flux_1_turn = 9.334238e-09 V sec sample_area = 2.669995e-05 m^2 delta_B = 6.991952e-04 T H_fin = -2.813035e-01 A/m 11:44:17 Measured H and B values: H = -0.281303 A/m B = 0.002359 T 11:44:17 Summary of measured B and H values: i H B (A/m) (T) --- ---------- ---------- 0 -0.20 0.000639 1 196.09 0.001081 2 392.20 0.000773 3 589.01 0.001672 4 788.20 0.002513 5 983.20 0.003422 6 1965.51 0.006420 7 3936.03 0.011227 8 5903.73 0.016708 9 7872.35 0.021714 10 5903.26 0.016046 11 3935.68 0.011247 12 1965.31 0.006358 13 983.11 0.003558 14 788.16 0.003088 15 588.95 0.002579 16 392.23 0.002171 17 196.10 0.002061 18 -0.24 0.001736 19 -197.30 0.001334 20 -393.57 0.001009 21 -590.35 0.000642 22 -789.74 -0.000219 23 -984.90 -0.000814 24 -1967.37 -0.003165 25 -3938.16 -0.007825 26 -5906.34 -0.012645 27 -7874.82 -0.018097 28 -5905.69 -0.012175 29 -3937.69 -0.007277 30 -1967.09 -0.001362 31 -984.83 0.001181 32 -789.70 0.001570 33 -590.28 0.001792 34 -393.53 0.001904 35 -197.28 0.001660 36 -0.28 0.002359 11:44:17 Symmetrized B and H values: i H B (A/m) (T) --- ---------- ---------- 0 -0.20 -0.001170 1 196.09 -0.000728 2 392.20 -0.001036 3 589.01 -0.000136 4 788.20 0.000705 5 983.20 0.001613 6 1965.51 0.004611 7 3936.03 0.009419 8 5903.73 0.014899 9 7872.35 0.019906 10 5903.26 0.014238 11 3935.68 0.009439 12 1965.31 0.004549 13 983.11 0.001749 14 788.16 0.001280 15 588.95 0.000770 16 392.23 0.000362 17 196.10 0.000252 18 -0.24 -0.000072 19 -197.30 -0.000474 20 -393.57 -0.000800 21 -590.35 -0.001166 22 -789.74 -0.002028 23 -984.90 -0.002623 24 -1967.37 -0.004974 25 -3938.16 -0.009634 26 -5906.34 -0.014453 27 -7874.82 -0.019906 28 -5905.69 -0.013984 29 -3937.69 -0.009085 30 -1967.09 -0.003171 31 -984.83 -0.000628 32 -789.70 -0.000238 33 -590.28 -0.000017 34 -393.53 0.000096 35 -197.28 -0.000149 36 -0.28 0.000551 11:44:17 Magnet current ramping to 0.0000 A...