SLAC Magnetic Measurements Date: 05-02-2002 Time: 14:19:42 Project: Spear3 Magnet Type: Permeameter Magnet Name: BabarSteel_1 Serial Number: Run Number: 6 Measurement Device: permeameter Operator: zw Comment: Use HP3458 for integration Standardization: 3 cycles from -12.0 A to 12.0 A to -12.0 A Test Currents (A): 0.0 0.2 0.4 0.6 0.8 1.0 2.0 4.0 6.0 8.0 10.0 12.0 10.0 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 -10.0 -12.0 -10.0 -8.0 -6.0 -4.0 -2.0 -1.0 -0.8 -0.6 -0.4 -0.2 0.0 14:20:32 Hall Probe Zeroed 14:20:50 Hall Probe Type Being Used, type = B9900 14:20:52 Initial Zero Current Measurement, Imag_zero = 0.0000 A 14:20:52 Magnet current ramping to 12.0000 A... 14:21:14 Magnet current ramping to -12.0000 A... 14:21:53 Magnet current ramping to 12.0000 A... 14:22:32 Magnet current ramping to -12.0000 A... 14:23:11 Magnet current ramping to 12.0000 A... 14:23:50 Magnet current ramping to -12.0000 A... 14:24:29 Magnet current ramping to 0.0000 A... 14:25:39 Hall Probe Range Set, range = 4 14:25:39 Hysteresis Loop Measurement Sample Geometry: cylinder 14:25:39 Hall Probe Field Measurement, B = -0.000440 T 14:25:39 Integrated Voltage Measurement... 14:25:40 Magnet current ramping to 0.0000 A... 14:26:03 Voltage Offset Correction: v_off_ini = 0.000016975 V, v_off_fin = -0.000006778 V 14:26:03 Integrated Voltage Measurement Imag = 0.0000 A VT = 0.000014047 Vs 14:26:03 Hall Probe Field Measurement, B = -0.000440 T 14:26:04 Calculate delta B and H from the cylinder Ifin = 0.000000 A B_hall_ini = -0.000440 T B_hall_fin = -0.000440 T VT = 1.404713e-05 V sec N_turns_coil = 180 delta_flux_1_turn = 7.803961e-08 V sec coil_area = 3.069131e-04 m^2 sample_OD_area = 2.848734e-04 m^2 sample_ID_area = 1.850502e-05 m^2 hole_area = 1.850502e-05 m^2 sample_area = 2.663684e-04 m^2 gap_area = 2.203969e-05 m^2 delta_flux_hole = 0.000000e+00 Tm^2 delta_flux_gap = 0.000000e+00 Tm^2 delta_flux_sample = 7.803961e-08 Tm^2 delta_B = 2.929763e-04 T H_fin = -3.466394e+02 A/m 14:26:04 Measured H and B values: H = -346.639428 A/m B = 0.000293 T 14:26:04 Hall Probe Field Measurement, B = -0.000440 T 14:26:04 Integrated Voltage Measurement... 14:26:05 Magnet current ramping to 0.2000 A... 14:26:30 Voltage Offset Correction: v_off_ini = -0.000008901 V, v_off_fin = 0.000712792 V 14:26:30 Integrated Voltage Measurement Imag = 0.2000 A VT = 0.094587910 Vs 14:26:30 Hall Probe Field Measurement, B = 0.000360 T 14:26:30 Calculate delta B and H from the cylinder Ifin = 0.200000 A B_hall_ini = -0.000440 T B_hall_fin = 0.000360 T VT = 9.458791e-02 V sec N_turns_coil = 180 delta_flux_1_turn = 5.254884e-04 V sec coil_area = 3.069131e-04 m^2 sample_OD_area = 2.848734e-04 m^2 sample_ID_area = 1.850502e-05 m^2 hole_area = 1.850502e-05 m^2 sample_area = 2.663684e-04 m^2 gap_area = 2.203969e-05 m^2 delta_flux_hole = 1.480401e-08 Tm^2 delta_flux_gap = 1.727912e-08 Tm^2 delta_flux_sample = 5.254563e-04 Tm^2 delta_B = 1.972668e+00 T H_fin = 2.836141e+02 A/m 14:26:30 Measured H and B values: H = 283.614077 A/m B = 1.972961 T 14:26:31 Hall Probe Field Measurement, B = 0.000350 T 14:26:31 Integrated Voltage Measurement... 14:26:32 Magnet current ramping to 0.4000 A... 14:26:57 Voltage Offset Correction: v_off_ini = 0.000008178 V, v_off_fin = 0.000003470 V 14:26:57 Integrated Voltage Measurement Imag = 0.4000 A VT = 0.033593342 Vs 14:26:57 Hall Probe Field Measurement, B = 0.002250 T 14:26:57 Calculate delta B and H from the cylinder Ifin = 0.400000 A B_hall_ini = 0.000350 T B_hall_fin = 0.002250 T VT = 3.359334e-02 V sec N_turns_coil = 180 delta_flux_1_turn = 1.866297e-04 V sec coil_area = 3.069131e-04 m^2 sample_OD_area = 2.848734e-04 m^2 sample_ID_area = 1.850502e-05 m^2 hole_area = 1.850502e-05 m^2 sample_area = 2.663684e-04 m^2 gap_area = 2.203969e-05 m^2 delta_flux_hole = 3.515953e-08 Tm^2 delta_flux_gap = 4.103790e-08 Tm^2 delta_flux_sample = 1.865535e-04 Tm^2 delta_B = 7.003590e-01 T H_fin = 1.772588e+03 A/m 14:26:57 Measured H and B values: H = 1772.587983 A/m B = 2.673320 T 14:26:58 Hall Probe Field Measurement, B = 0.002250 T 14:26:58 Integrated Voltage Measurement... 14:26:59 Magnet current ramping to 0.6000 A... 14:27:24 Voltage Offset Correction: v_off_ini = 0.000000929 V, v_off_fin = 0.000003129 V 14:27:24 Integrated Voltage Measurement Imag = 0.6000 A VT = 0.006491713 Vs 14:27:24 Hall Probe Field Measurement, B = 0.004820 T 14:27:24 Calculate delta B and H from the cylinder Ifin = 0.600000 A B_hall_ini = 0.002250 T B_hall_fin = 0.004820 T VT = 6.491713e-03 V sec N_turns_coil = 180 delta_flux_1_turn = 3.606507e-05 V sec coil_area = 3.069131e-04 m^2 sample_OD_area = 2.848734e-04 m^2 sample_ID_area = 1.850502e-05 m^2 hole_area = 1.850502e-05 m^2 sample_area = 2.663684e-04 m^2 gap_area = 2.203969e-05 m^2 delta_flux_hole = 4.755789e-08 Tm^2 delta_flux_gap = 5.550916e-08 Tm^2 delta_flux_sample = 3.596201e-05 Tm^2 delta_B = 1.350085e-01 T H_fin = 3.797277e+03 A/m 14:27:24 Measured H and B values: H = 3797.277369 A/m B = 2.808328 T 14:27:25 Hall Probe Field Measurement, B = 0.004820 T 14:27:25 Integrated Voltage Measurement... 14:27:26 Magnet current ramping to 0.8000 A... 14:27:51 Voltage Offset Correction: v_off_ini = -0.000000781 V, v_off_fin = 0.000000247 V 14:27:51 Integrated Voltage Measurement Imag = 0.8000 A VT = 0.003470627 Vs 14:27:51 Hall Probe Field Measurement, B = 0.007530 T 14:27:51 Calculate delta B and H from the cylinder Ifin = 0.800000 A B_hall_ini = 0.004820 T B_hall_fin = 0.007530 T VT = 3.470627e-03 V sec N_turns_coil = 180 delta_flux_1_turn = 1.928126e-05 V sec coil_area = 3.069131e-04 m^2 sample_OD_area = 2.848734e-04 m^2 sample_ID_area = 1.850502e-05 m^2 hole_area = 1.850502e-05 m^2 sample_area = 2.663684e-04 m^2 gap_area = 2.203969e-05 m^2 delta_flux_hole = 5.014859e-08 Tm^2 delta_flux_gap = 5.853300e-08 Tm^2 delta_flux_sample = 1.917258e-05 Tm^2 delta_B = 7.197769e-02 T H_fin = 5.932261e+03 A/m 14:27:51 Measured H and B values: H = 5932.261117 A/m B = 2.880306 T 14:27:52 Hall Probe Field Measurement, B = 0.007530 T 14:27:52 Integrated Voltage Measurement... 14:27:53 Magnet current ramping to 1.0000 A... 14:28:18 Voltage Offset Correction: v_off_ini = -0.000000731 V, v_off_fin = -0.000001515 V 14:28:18 Integrated Voltage Measurement Imag = 1.0000 A VT = 0.002510374 Vs 14:28:19 Hall Probe Field Measurement, B = 0.010170 T 14:28:19 Calculate delta B and H from the cylinder Ifin = 1.000000 A B_hall_ini = 0.007530 T B_hall_fin = 0.010170 T VT = 2.510374e-03 V sec N_turns_coil = 180 delta_flux_1_turn = 1.394652e-05 V sec coil_area = 3.069131e-04 m^2 sample_OD_area = 2.848734e-04 m^2 sample_ID_area = 1.850502e-05 m^2 hole_area = 1.850502e-05 m^2 sample_area = 2.663684e-04 m^2 gap_area = 2.203969e-05 m^2 delta_flux_hole = 4.885324e-08 Tm^2 delta_flux_gap = 5.702108e-08 Tm^2 delta_flux_sample = 1.384065e-05 Tm^2 delta_B = 5.196055e-02 T H_fin = 8.012098e+03 A/m 14:28:19 Measured H and B values: H = 8012.097684 A/m B = 2.932267 T 14:28:19 Hall Probe Field Measurement, B = 0.010170 T 14:28:19 Integrated Voltage Measurement... 14:28:20 Magnet current ramping to 2.0000 A... 14:28:53 Voltage Offset Correction: v_off_ini = -0.000000601 V, v_off_fin = 0.000000735 V 14:28:53 Integrated Voltage Measurement Imag = 2.0000 A VT = 0.008246720 Vs 14:28:53 Hall Probe Field Measurement, B = 0.023330 T 14:28:54 Calculate delta B and H from the cylinder Ifin = 2.000000 A B_hall_ini = 0.010170 T B_hall_fin = 0.023330 T VT = 8.246720e-03 V sec N_turns_coil = 180 delta_flux_1_turn = 4.581511e-05 V sec coil_area = 3.069131e-04 m^2 sample_OD_area = 2.848734e-04 m^2 sample_ID_area = 1.850502e-05 m^2 hole_area = 1.850502e-05 m^2 sample_area = 2.663684e-04 m^2 gap_area = 2.203969e-05 m^2 delta_flux_hole = 2.435260e-07 Tm^2 delta_flux_gap = 2.842414e-07 Tm^2 delta_flux_sample = 4.528734e-05 Tm^2 delta_B = 1.700177e-01 T H_fin = 1.837977e+04 A/m 14:28:54 Measured H and B values: H = 18379.767844 A/m B = 3.102284 T 14:28:54 Hall Probe Field Measurement, B = 0.023330 T 14:28:54 Integrated Voltage Measurement... 14:28:55 Magnet current ramping to 4.0000 A... 14:29:37 Voltage Offset Correction: v_off_ini = -0.000000351 V, v_off_fin = 0.000000007 V 14:29:38 Integrated Voltage Measurement Imag = 4.0000 A VT = 0.007792846 Vs 14:29:38 Hall Probe Field Measurement, B = 0.047760 T 14:29:38 Calculate delta B and H from the cylinder Ifin = 4.000000 A B_hall_ini = 0.023330 T B_hall_fin = 0.047760 T VT = 7.792846e-03 V sec N_turns_coil = 180 delta_flux_1_turn = 4.329359e-05 V sec coil_area = 3.069131e-04 m^2 sample_OD_area = 2.848734e-04 m^2 sample_ID_area = 1.850502e-05 m^2 hole_area = 1.850502e-05 m^2 sample_area = 2.663684e-04 m^2 gap_area = 2.203969e-05 m^2 delta_flux_hole = 4.520775e-07 Tm^2 delta_flux_gap = 5.276610e-07 Tm^2 delta_flux_sample = 4.231385e-05 Tm^2 delta_B = 1.588546e-01 T H_fin = 3.762613e+04 A/m 14:29:38 Measured H and B values: H = 37626.134257 A/m B = 3.261139 T 14:29:39 Hall Probe Field Measurement, B = 0.047760 T 14:29:39 Integrated Voltage Measurement... 14:29:40 Magnet current ramping to 6.0000 A... 14:30:22 Voltage Offset Correction: v_off_ini = -0.000000256 V, v_off_fin = -0.000000379 V 14:30:22 Integrated Voltage Measurement Imag = 6.0000 A VT = 0.002605703 Vs 14:30:22 Hall Probe Field Measurement, B = 0.070030 T 14:30:22 Calculate delta B and H from the cylinder Ifin = 6.000000 A B_hall_ini = 0.047760 T B_hall_fin = 0.070030 T VT = 2.605703e-03 V sec N_turns_coil = 180 delta_flux_1_turn = 1.447613e-05 V sec coil_area = 3.069131e-04 m^2 sample_OD_area = 2.848734e-04 m^2 sample_ID_area = 1.850502e-05 m^2 hole_area = 1.850502e-05 m^2 sample_area = 2.663684e-04 m^2 gap_area = 2.203969e-05 m^2 delta_flux_hole = 4.121067e-07 Tm^2 delta_flux_gap = 4.810074e-07 Tm^2 delta_flux_sample = 1.358301e-05 Tm^2 delta_B = 5.099333e-02 T H_fin = 5.517082e+04 A/m 14:30:22 Measured H and B values: H = 55170.816207 A/m B = 3.312132 T 14:30:23 Hall Probe Field Measurement, B = 0.070030 T 14:30:23 Integrated Voltage Measurement... 14:30:24 Magnet current ramping to 8.0000 A... 14:31:05 Voltage Offset Correction: v_off_ini = -0.000000514 V, v_off_fin = -0.000001732 V 14:31:06 Integrated Voltage Measurement Imag = 8.0000 A VT = 0.001574629 Vs 14:31:06 Hall Probe Field Measurement, B = 0.091670 T 14:31:06 Calculate delta B and H from the cylinder Ifin = 8.000000 A B_hall_ini = 0.070030 T B_hall_fin = 0.091670 T VT = 1.574629e-03 V sec N_turns_coil = 180 delta_flux_1_turn = 8.747937e-06 V sec coil_area = 3.069131e-04 m^2 sample_OD_area = 2.848734e-04 m^2 sample_ID_area = 1.850502e-05 m^2 hole_area = 1.850502e-05 m^2 sample_area = 2.663684e-04 m^2 gap_area = 2.203969e-05 m^2 delta_flux_hole = 4.004486e-07 Tm^2 delta_flux_gap = 4.674001e-07 Tm^2 delta_flux_sample = 7.880088e-06 Tm^2 delta_B = 2.958342e-02 T H_fin = 7.221917e+04 A/m 14:31:06 Measured H and B values: H = 72219.173521 A/m B = 3.341716 T 14:31:07 Hall Probe Field Measurement, B = 0.091670 T 14:31:07 Integrated Voltage Measurement... 14:31:08 Magnet current ramping to 10.0000 A... 14:31:49 Voltage Offset Correction: v_off_ini = -0.000000633 V, v_off_fin = -0.000000861 V 14:31:49 Integrated Voltage Measurement Imag = 10.0000 A VT = 0.001046448 Vs 14:31:50 Hall Probe Field Measurement, B = 0.108020 T 14:31:50 Calculate delta B and H from the cylinder Ifin = 10.000000 A B_hall_ini = 0.091670 T B_hall_fin = 0.108020 T VT = 1.046448e-03 V sec N_turns_coil = 180 delta_flux_1_turn = 5.813598e-06 V sec coil_area = 3.069131e-04 m^2 sample_OD_area = 2.848734e-04 m^2 sample_ID_area = 1.850502e-05 m^2 hole_area = 1.850502e-05 m^2 sample_area = 2.663684e-04 m^2 gap_area = 2.203969e-05 m^2 delta_flux_hole = 3.025570e-07 Tm^2 delta_flux_gap = 3.531419e-07 Tm^2 delta_flux_sample = 5.157899e-06 Tm^2 delta_B = 1.936378e-02 T H_fin = 8.509998e+04 A/m 14:31:50 Measured H and B values: H = 85099.979533 A/m B = 3.361079 T 14:31:51 Hall Probe Field Measurement, B = 0.108010 T 14:31:51 Integrated Voltage Measurement... 14:31:52 Magnet current ramping to 12.0000 A... 14:32:34 Voltage Offset Correction: v_off_ini = -0.000000228 V, v_off_fin = -0.000000229 V 14:32:34 Integrated Voltage Measurement Imag = 12.0000 A VT = 0.000624572 Vs 14:32:34 Hall Probe Field Measurement, B = 0.118160 T 14:32:34 Calculate delta B and H from the cylinder Ifin = 12.000000 A B_hall_ini = 0.108010 T B_hall_fin = 0.118160 T VT = 6.245718e-04 V sec N_turns_coil = 180 delta_flux_1_turn = 3.469844e-06 V sec coil_area = 3.069131e-04 m^2 sample_OD_area = 2.848734e-04 m^2 sample_ID_area = 1.850502e-05 m^2 hole_area = 1.850502e-05 m^2 sample_area = 2.663684e-04 m^2 gap_area = 2.203969e-05 m^2 delta_flux_hole = 1.878259e-07 Tm^2 delta_flux_gap = 2.192288e-07 Tm^2 delta_flux_sample = 3.062789e-06 Tm^2 delta_B = 1.149832e-02 T H_fin = 9.308844e+04 A/m 14:32:34 Measured H and B values: H = 93088.442710 A/m B = 3.372578 T 14:32:35 Hall Probe Field Measurement, B = 0.118160 T 14:32:35 Integrated Voltage Measurement... 14:32:36 Magnet current ramping to 10.0000 A... 14:33:18 Voltage Offset Correction: v_off_ini = -0.000000316 V, v_off_fin = 0.000000244 V 14:33:18 Integrated Voltage Measurement Imag = 10.0000 A VT = -0.000526925 Vs 14:33:18 Hall Probe Field Measurement, B = 0.109530 T 14:33:18 Calculate delta B and H from the cylinder Ifin = 10.000000 A B_hall_ini = 0.118160 T B_hall_fin = 0.109530 T VT = -5.269252e-04 V sec N_turns_coil = 180 delta_flux_1_turn = -2.927362e-06 V sec coil_area = 3.069131e-04 m^2 sample_OD_area = 2.848734e-04 m^2 sample_ID_area = 1.850502e-05 m^2 hole_area = 1.850502e-05 m^2 sample_area = 2.663684e-04 m^2 gap_area = 2.203969e-05 m^2 delta_flux_hole = -1.596983e-07 Tm^2 delta_flux_gap = -1.863985e-07 Tm^2 delta_flux_sample = -2.581265e-06 Tm^2 delta_B = -9.690585e-03 T H_fin = 8.628958e+04 A/m 14:33:18 Measured H and B values: H = 86289.583024 A/m B = 3.362887 T 14:33:19 Hall Probe Field Measurement, B = 0.109520 T 14:33:19 Integrated Voltage Measurement... 14:33:20 Magnet current ramping to 8.0000 A... 14:34:02 Voltage Offset Correction: v_off_ini = 0.000000018 V, v_off_fin = 0.000000638 V 14:34:02 Integrated Voltage Measurement Imag = 8.0000 A VT = -0.000963323 Vs 14:34:02 Hall Probe Field Measurement, B = 0.094530 T 14:34:02 Calculate delta B and H from the cylinder Ifin = 8.000000 A B_hall_ini = 0.109520 T B_hall_fin = 0.094530 T VT = -9.633225e-04 V sec N_turns_coil = 180 delta_flux_1_turn = -5.351792e-06 V sec coil_area = 3.069131e-04 m^2 sample_OD_area = 2.848734e-04 m^2 sample_ID_area = 1.850502e-05 m^2 hole_area = 1.850502e-05 m^2 sample_area = 2.663684e-04 m^2 gap_area = 2.203969e-05 m^2 delta_flux_hole = -2.773902e-07 Tm^2 delta_flux_gap = -3.237674e-07 Tm^2 delta_flux_sample = -4.750634e-06 Tm^2 delta_B = -1.783483e-02 T H_fin = 7.447233e+04 A/m 14:34:02 Measured H and B values: H = 74472.329802 A/m B = 3.345052 T 14:34:03 Hall Probe Field Measurement, B = 0.094530 T 14:34:03 Integrated Voltage Measurement... 14:34:04 Magnet current ramping to 6.0000 A... 14:34:46 Voltage Offset Correction: v_off_ini = -0.000000038 V, v_off_fin = 0.000000225 V 14:34:46 Integrated Voltage Measurement Imag = 6.0000 A VT = -0.001535179 Vs 14:34:46 Hall Probe Field Measurement, B = 0.072880 T 14:34:46 Calculate delta B and H from the cylinder Ifin = 6.000000 A B_hall_ini = 0.094530 T B_hall_fin = 0.072880 T VT = -1.535179e-03 V sec N_turns_coil = 180 delta_flux_1_turn = -8.528769e-06 V sec coil_area = 3.069131e-04 m^2 sample_OD_area = 2.848734e-04 m^2 sample_ID_area = 1.850502e-05 m^2 hole_area = 1.850502e-05 m^2 sample_area = 2.663684e-04 m^2 gap_area = 2.203969e-05 m^2 delta_flux_hole = -4.006336e-07 Tm^2 delta_flux_gap = -4.676161e-07 Tm^2 delta_flux_sample = -7.660520e-06 Tm^2 delta_B = -2.875912e-02 T H_fin = 5.741609e+04 A/m 14:34:46 Measured H and B values: H = 57416.094319 A/m B = 3.316293 T 14:34:47 Hall Probe Field Measurement, B = 0.072880 T 14:34:47 Integrated Voltage Measurement... 14:34:48 Magnet current ramping to 4.0000 A... 14:35:30 Voltage Offset Correction: v_off_ini = -0.000000911 V, v_off_fin = -0.000000893 V 14:35:30 Integrated Voltage Measurement Imag = 4.0000 A VT = -0.002336537 Vs 14:35:30 Hall Probe Field Measurement, B = 0.050470 T 14:35:30 Calculate delta B and H from the cylinder Ifin = 4.000000 A B_hall_ini = 0.072880 T B_hall_fin = 0.050470 T VT = -2.336537e-03 V sec N_turns_coil = 180 delta_flux_1_turn = -1.298076e-05 V sec coil_area = 3.069131e-04 m^2 sample_OD_area = 2.848734e-04 m^2 sample_ID_area = 1.850502e-05 m^2 hole_area = 1.850502e-05 m^2 sample_area = 2.663684e-04 m^2 gap_area = 2.203969e-05 m^2 delta_flux_hole = -4.146974e-07 Tm^2 delta_flux_gap = -4.840312e-07 Tm^2 delta_flux_sample = -1.208203e-05 Tm^2 delta_B = -4.535836e-02 T H_fin = 3.976112e+04 A/m 14:35:30 Measured H and B values: H = 39761.118006 A/m B = 3.270935 T 14:35:31 Hall Probe Field Measurement, B = 0.050470 T 14:35:31 Integrated Voltage Measurement... 14:35:32 Magnet current ramping to 2.0000 A... 14:36:14 Voltage Offset Correction: v_off_ini = 0.000000208 V, v_off_fin = -0.000000698 V 14:36:14 Integrated Voltage Measurement Imag = 2.0000 A VT = -0.006850403 Vs 14:36:14 Hall Probe Field Measurement, B = 0.026320 T 14:36:14 Calculate delta B and H from the cylinder Ifin = 2.000000 A B_hall_ini = 0.050470 T B_hall_fin = 0.026320 T VT = -6.850403e-03 V sec N_turns_coil = 180 delta_flux_1_turn = -3.805780e-05 V sec coil_area = 3.069131e-04 m^2 sample_OD_area = 2.848734e-04 m^2 sample_ID_area = 1.850502e-05 m^2 hole_area = 1.850502e-05 m^2 sample_area = 2.663684e-04 m^2 gap_area = 2.203969e-05 m^2 delta_flux_hole = -4.468961e-07 Tm^2 delta_flux_gap = -5.216133e-07 Tm^2 delta_flux_sample = -3.708929e-05 Tm^2 delta_B = -1.392406e-01 T H_fin = 2.073534e+04 A/m 14:36:14 Measured H and B values: H = 20735.340319 A/m B = 3.131694 T 14:36:15 Hall Probe Field Measurement, B = 0.026320 T 14:36:15 Integrated Voltage Measurement... 14:36:16 Magnet current ramping to 1.0000 A... 14:36:48 Voltage Offset Correction: v_off_ini = -0.000000050 V, v_off_fin = -0.000003267 V 14:36:48 Integrated Voltage Measurement Imag = 1.0000 A VT = -0.007043830 Vs 14:36:49 Hall Probe Field Measurement, B = 0.013240 T 14:36:49 Calculate delta B and H from the cylinder Ifin = 1.000000 A B_hall_ini = 0.026320 T B_hall_fin = 0.013240 T VT = -7.043830e-03 V sec N_turns_coil = 180 delta_flux_1_turn = -3.913239e-05 V sec coil_area = 3.069131e-04 m^2 sample_OD_area = 2.848734e-04 m^2 sample_ID_area = 1.850502e-05 m^2 hole_area = 1.850502e-05 m^2 sample_area = 2.663684e-04 m^2 gap_area = 2.203969e-05 m^2 delta_flux_hole = -2.420456e-07 Tm^2 delta_flux_gap = -2.825135e-07 Tm^2 delta_flux_sample = -3.860783e-05 Tm^2 delta_B = -1.449415e-01 T H_fin = 1.043070e+04 A/m 14:36:49 Measured H and B values: H = 10430.695510 A/m B = 2.986753 T 14:36:50 Hall Probe Field Measurement, B = 0.013240 T 14:36:50 Integrated Voltage Measurement... 14:36:51 Magnet current ramping to 0.8000 A... 14:37:15 Voltage Offset Correction: v_off_ini = -0.000002120 V, v_off_fin = -0.000003260 V 14:37:15 Integrated Voltage Measurement Imag = 0.8000 A VT = -0.001899960 Vs 14:37:16 Hall Probe Field Measurement, B = 0.010620 T 14:37:16 Calculate delta B and H from the cylinder Ifin = 0.800000 A B_hall_ini = 0.013240 T B_hall_fin = 0.010620 T VT = -1.899960e-03 V sec N_turns_coil = 180 delta_flux_1_turn = -1.055533e-05 V sec coil_area = 3.069131e-04 m^2 sample_OD_area = 2.848734e-04 m^2 sample_ID_area = 1.850502e-05 m^2 hole_area = 1.850502e-05 m^2 sample_area = 2.663684e-04 m^2 gap_area = 2.203969e-05 m^2 delta_flux_hole = -4.848314e-08 Tm^2 delta_flux_gap = -5.658910e-08 Tm^2 delta_flux_sample = -1.045026e-05 Tm^2 delta_B = -3.923236e-02 T H_fin = 8.366615e+03 A/m 14:37:16 Measured H and B values: H = 8366.615281 A/m B = 2.947520 T 14:37:16 Hall Probe Field Measurement, B = 0.010620 T 14:37:16 Integrated Voltage Measurement... 14:37:17 Magnet current ramping to 0.6000 A... 14:37:42 Voltage Offset Correction: v_off_ini = -0.000000613 V, v_off_fin = -0.000002399 V 14:37:42 Integrated Voltage Measurement Imag = 0.6000 A VT = -0.002311945 Vs 14:37:43 Hall Probe Field Measurement, B = 0.007920 T 14:37:43 Calculate delta B and H from the cylinder Ifin = 0.600000 A B_hall_ini = 0.010620 T B_hall_fin = 0.007920 T VT = -2.311945e-03 V sec N_turns_coil = 180 delta_flux_1_turn = -1.284414e-05 V sec coil_area = 3.069131e-04 m^2 sample_OD_area = 2.848734e-04 m^2 sample_ID_area = 1.850502e-05 m^2 hole_area = 1.850502e-05 m^2 sample_area = 2.663684e-04 m^2 gap_area = 2.203969e-05 m^2 delta_flux_hole = -4.996354e-08 Tm^2 delta_flux_gap = -5.831701e-08 Tm^2 delta_flux_sample = -1.273586e-05 Tm^2 delta_B = -4.781296e-02 T H_fin = 6.239510e+03 A/m 14:37:43 Measured H and B values: H = 6239.509701 A/m B = 2.899707 T 14:37:43 Hall Probe Field Measurement, B = 0.007920 T 14:37:43 Integrated Voltage Measurement... 14:37:45 Magnet current ramping to 0.4000 A... 14:38:09 Voltage Offset Correction: v_off_ini = 0.000000259 V, v_off_fin = -0.000003024 V 14:38:09 Integrated Voltage Measurement Imag = 0.4000 A VT = -0.002880491 Vs 14:38:10 Hall Probe Field Measurement, B = 0.005220 T 14:38:10 Calculate delta B and H from the cylinder Ifin = 0.400000 A B_hall_ini = 0.007920 T B_hall_fin = 0.005220 T VT = -2.880491e-03 V sec N_turns_coil = 180 delta_flux_1_turn = -1.600273e-05 V sec coil_area = 3.069131e-04 m^2 sample_OD_area = 2.848734e-04 m^2 sample_ID_area = 1.850502e-05 m^2 hole_area = 1.850502e-05 m^2 sample_area = 2.663684e-04 m^2 gap_area = 2.203969e-05 m^2 delta_flux_hole = -4.996354e-08 Tm^2 delta_flux_gap = -5.831701e-08 Tm^2 delta_flux_sample = -1.589445e-05 Tm^2 delta_B = -5.967093e-02 T H_fin = 4.112404e+03 A/m 14:38:10 Measured H and B values: H = 4112.404121 A/m B = 2.840037 T 14:38:10 Hall Probe Field Measurement, B = 0.005220 T 14:38:10 Integrated Voltage Measurement... 14:38:11 Magnet current ramping to 0.2000 A... 14:38:36 Voltage Offset Correction: v_off_ini = -0.000003225 V, v_off_fin = 0.000001738 V 14:38:36 Integrated Voltage Measurement Imag = 0.2000 A VT = -0.004439751 Vs 14:38:37 Hall Probe Field Measurement, B = 0.002550 T 14:38:37 Calculate delta B and H from the cylinder Ifin = 0.200000 A B_hall_ini = 0.005220 T B_hall_fin = 0.002550 T VT = -4.439751e-03 V sec N_turns_coil = 180 delta_flux_1_turn = -2.466528e-05 V sec coil_area = 3.069131e-04 m^2 sample_OD_area = 2.848734e-04 m^2 sample_ID_area = 1.850502e-05 m^2 hole_area = 1.850502e-05 m^2 sample_area = 2.663684e-04 m^2 gap_area = 2.203969e-05 m^2 delta_flux_hole = -4.940839e-08 Tm^2 delta_flux_gap = -5.766905e-08 Tm^2 delta_flux_sample = -2.455821e-05 Tm^2 delta_B = -9.219640e-02 T H_fin = 2.008933e+03 A/m 14:38:37 Measured H and B values: H = 2008.933048 A/m B = 2.747840 T 14:38:37 Hall Probe Field Measurement, B = 0.002550 T 14:38:37 Integrated Voltage Measurement... 14:38:38 Magnet current ramping to 0.0000 A... 14:39:03 Voltage Offset Correction: v_off_ini = 0.000001711 V, v_off_fin = -0.000051515 V 14:39:03 Integrated Voltage Measurement Imag = 0.0000 A VT = -0.016700925 Vs 14:39:04 Hall Probe Field Measurement, B = 0.000300 T 14:39:04 Calculate delta B and H from the cylinder Ifin = 0.000000 A B_hall_ini = 0.002550 T B_hall_fin = 0.000300 T VT = -1.670092e-02 V sec N_turns_coil = 180 delta_flux_1_turn = -9.278292e-05 V sec coil_area = 3.069131e-04 m^2 sample_OD_area = 2.848734e-04 m^2 sample_ID_area = 1.850502e-05 m^2 hole_area = 1.850502e-05 m^2 sample_area = 2.663684e-04 m^2 gap_area = 2.203969e-05 m^2 delta_flux_hole = -4.163629e-08 Tm^2 delta_flux_gap = -4.859751e-08 Tm^2 delta_flux_sample = -9.269268e-05 Tm^2 delta_B = -3.479868e-01 T H_fin = 2.363451e+02 A/m 14:39:04 Measured H and B values: H = 236.345064 A/m B = 2.399853 T 14:39:04 Hall Probe Field Measurement, B = 0.000300 T 14:39:05 Integrated Voltage Measurement... 14:39:06 Magnet current ramping to -0.2000 A... 14:39:30 Voltage Offset Correction: v_off_ini = 0.000003555 V, v_off_fin = -0.000466672 V 14:39:30 Integrated Voltage Measurement Imag = -0.2000 A VT = -0.100655558 Vs 14:39:31 Hall Probe Field Measurement, B = -0.000440 T 14:39:31 Calculate delta B and H from the cylinder Ifin = -0.200000 A B_hall_ini = 0.000300 T B_hall_fin = -0.000440 T VT = -1.006556e-01 V sec N_turns_coil = 180 delta_flux_1_turn = -5.591975e-04 V sec coil_area = 3.069131e-04 m^2 sample_OD_area = 2.848734e-04 m^2 sample_ID_area = 1.850502e-05 m^2 hole_area = 1.850502e-05 m^2 sample_area = 2.663684e-04 m^2 gap_area = 2.203969e-05 m^2 delta_flux_hole = -1.369371e-08 Tm^2 delta_flux_gap = -1.598318e-08 Tm^2 delta_flux_sample = -5.591679e-04 Tm^2 delta_B = -2.099228e+00 T H_fin = -3.466394e+02 A/m 14:39:31 Measured H and B values: H = -346.639428 A/m B = 0.300626 T 14:39:31 Hall Probe Field Measurement, B = -0.000460 T 14:39:31 Integrated Voltage Measurement... 14:39:32 Magnet current ramping to -0.4000 A... 14:39:57 Voltage Offset Correction: v_off_ini = -0.000002536 V, v_off_fin = -0.000006616 V 14:39:57 Integrated Voltage Measurement Imag = -0.4000 A VT = -0.026195926 Vs 14:39:58 Hall Probe Field Measurement, B = -0.002490 T 14:39:58 Calculate delta B and H from the cylinder Ifin = -0.400000 A B_hall_ini = -0.000460 T B_hall_fin = -0.002490 T VT = -2.619593e-02 V sec N_turns_coil = 180 delta_flux_1_turn = -1.455329e-04 V sec coil_area = 3.069131e-04 m^2 sample_OD_area = 2.848734e-04 m^2 sample_ID_area = 1.850502e-05 m^2 hole_area = 1.850502e-05 m^2 sample_area = 2.663684e-04 m^2 gap_area = 2.203969e-05 m^2 delta_flux_hole = -3.756518e-08 Tm^2 delta_flux_gap = -4.384575e-08 Tm^2 delta_flux_sample = -1.454515e-04 Tm^2 delta_B = -5.460540e-01 T H_fin = -1.961664e+03 A/m 14:39:58 Measured H and B values: H = -1961.664035 A/m B = -0.245428 T 14:39:58 Hall Probe Field Measurement, B = -0.002490 T 14:39:58 Integrated Voltage Measurement... 14:39:59 Magnet current ramping to -0.6000 A... 14:40:24 Voltage Offset Correction: v_off_ini = -0.000000875 V, v_off_fin = 0.000000756 V 14:40:24 Integrated Voltage Measurement Imag = -0.6000 A VT = -0.005904634 Vs 14:40:25 Hall Probe Field Measurement, B = -0.005090 T 14:40:25 Calculate delta B and H from the cylinder Ifin = -0.600000 A B_hall_ini = -0.002490 T B_hall_fin = -0.005090 T VT = -5.904634e-03 V sec N_turns_coil = 180 delta_flux_1_turn = -3.280352e-05 V sec coil_area = 3.069131e-04 m^2 sample_OD_area = 2.848734e-04 m^2 sample_ID_area = 1.850502e-05 m^2 hole_area = 1.850502e-05 m^2 sample_area = 2.663684e-04 m^2 gap_area = 2.203969e-05 m^2 delta_flux_hole = -4.811304e-08 Tm^2 delta_flux_gap = -5.615712e-08 Tm^2 delta_flux_sample = -3.269925e-05 Tm^2 delta_B = -1.227595e-01 T H_fin = -4.009988e+03 A/m 14:40:25 Measured H and B values: H = -4009.987927 A/m B = -0.368188 T 14:40:25 Hall Probe Field Measurement, B = -0.005090 T 14:40:25 Integrated Voltage Measurement... 14:40:26 Magnet current ramping to -0.8000 A... 14:40:51 Voltage Offset Correction: v_off_ini = 0.000002900 V, v_off_fin = -0.000001532 V 14:40:51 Integrated Voltage Measurement Imag = -0.8000 A VT = -0.003340982 Vs 14:40:52 Hall Probe Field Measurement, B = -0.007800 T 14:40:52 Calculate delta B and H from the cylinder Ifin = -0.800000 A B_hall_ini = -0.005090 T B_hall_fin = -0.007800 T VT = -3.340982e-03 V sec N_turns_coil = 180 delta_flux_1_turn = -1.856101e-05 V sec coil_area = 3.069131e-04 m^2 sample_OD_area = 2.848734e-04 m^2 sample_ID_area = 1.850502e-05 m^2 hole_area = 1.850502e-05 m^2 sample_area = 2.663684e-04 m^2 gap_area = 2.203969e-05 m^2 delta_flux_hole = -5.014859e-08 Tm^2 delta_flux_gap = -5.853300e-08 Tm^2 delta_flux_sample = -1.845233e-05 Tm^2 delta_B = -6.927372e-02 T H_fin = -6.144972e+03 A/m 14:40:52 Measured H and B values: H = -6144.971675 A/m B = -0.437462 T 14:40:52 Hall Probe Field Measurement, B = -0.007800 T 14:40:52 Integrated Voltage Measurement... 14:40:53 Magnet current ramping to -1.0000 A... 14:41:18 Voltage Offset Correction: v_off_ini = 0.000000174 V, v_off_fin = 0.000013251 V 14:41:18 Integrated Voltage Measurement Imag = -1.0000 A VT = -0.002581072 Vs 14:41:19 Hall Probe Field Measurement, B = -0.010450 T 14:41:19 Calculate delta B and H from the cylinder Ifin = -1.000000 A B_hall_ini = -0.007800 T B_hall_fin = -0.010450 T VT = -2.581072e-03 V sec N_turns_coil = 180 delta_flux_1_turn = -1.433929e-05 V sec coil_area = 3.069131e-04 m^2 sample_OD_area = 2.848734e-04 m^2 sample_ID_area = 1.850502e-05 m^2 hole_area = 1.850502e-05 m^2 sample_area = 2.663684e-04 m^2 gap_area = 2.203969e-05 m^2 delta_flux_hole = -4.903829e-08 Tm^2 delta_flux_gap = -5.723707e-08 Tm^2 delta_flux_sample = -1.423301e-05 Tm^2 delta_B = -5.343356e-02 T H_fin = -8.232686e+03 A/m 14:41:19 Measured H and B values: H = -8232.686411 A/m B = -0.490895 T 14:41:19 Hall Probe Field Measurement, B = -0.010450 T 14:41:19 Integrated Voltage Measurement... 14:41:20 Magnet current ramping to -2.0000 A... 14:41:53 Voltage Offset Correction: v_off_ini = 0.000002024 V, v_off_fin = -0.000000849 V 14:41:53 Integrated Voltage Measurement Imag = -2.0000 A VT = -0.008114160 Vs 14:41:53 Hall Probe Field Measurement, B = -0.023600 T 14:41:53 Calculate delta B and H from the cylinder Ifin = -2.000000 A B_hall_ini = -0.010450 T B_hall_fin = -0.023600 T VT = -8.114160e-03 V sec N_turns_coil = 180 delta_flux_1_turn = -4.507867e-05 V sec coil_area = 3.069131e-04 m^2 sample_OD_area = 2.848734e-04 m^2 sample_ID_area = 1.850502e-05 m^2 hole_area = 1.850502e-05 m^2 sample_area = 2.663684e-04 m^2 gap_area = 2.203969e-05 m^2 delta_flux_hole = -2.433410e-07 Tm^2 delta_flux_gap = -2.840255e-07 Tm^2 delta_flux_sample = -4.455130e-05 Tm^2 delta_B = -1.672545e-01 T H_fin = -1.859248e+04 A/m 14:41:53 Measured H and B values: H = -18592.478402 A/m B = -0.658150 T 14:41:54 Hall Probe Field Measurement, B = -0.023600 T 14:41:54 Integrated Voltage Measurement... 14:41:55 Magnet current ramping to -4.0000 A... 14:42:37 Voltage Offset Correction: v_off_ini = 0.000015513 V, v_off_fin = 0.000000317 V 14:42:37 Integrated Voltage Measurement Imag = -4.0000 A VT = -0.007880559 Vs 14:42:38 Hall Probe Field Measurement, B = -0.048020 T 14:42:38 Calculate delta B and H from the cylinder Ifin = -4.000000 A B_hall_ini = -0.023600 T B_hall_fin = -0.048020 T VT = -7.880559e-03 V sec N_turns_coil = 180 delta_flux_1_turn = -4.378089e-05 V sec coil_area = 3.069131e-04 m^2 sample_OD_area = 2.848734e-04 m^2 sample_ID_area = 1.850502e-05 m^2 hole_area = 1.850502e-05 m^2 sample_area = 2.663684e-04 m^2 gap_area = 2.203969e-05 m^2 delta_flux_hole = -4.518925e-07 Tm^2 delta_flux_gap = -5.274450e-07 Tm^2 delta_flux_sample = -4.280155e-05 Tm^2 delta_B = -1.606855e-01 T H_fin = -3.783097e+04 A/m 14:42:38 Measured H and B values: H = -37830.966647 A/m B = -0.818835 T 14:42:39 Hall Probe Field Measurement, B = -0.048020 T 14:42:39 Integrated Voltage Measurement... 14:42:40 Magnet current ramping to -6.0000 A... 14:43:21 Voltage Offset Correction: v_off_ini = 0.000000586 V, v_off_fin = 0.000000335 V 14:43:22 Integrated Voltage Measurement Imag = -6.0000 A VT = -0.002588703 Vs 14:43:22 Hall Probe Field Measurement, B = -0.070320 T 14:43:22 Calculate delta B and H from the cylinder Ifin = -6.000000 A B_hall_ini = -0.048020 T B_hall_fin = -0.070320 T VT = -2.588703e-03 V sec N_turns_coil = 180 delta_flux_1_turn = -1.438169e-05 V sec coil_area = 3.069131e-04 m^2 sample_OD_area = 2.848734e-04 m^2 sample_ID_area = 1.850502e-05 m^2 hole_area = 1.850502e-05 m^2 sample_area = 2.663684e-04 m^2 gap_area = 2.203969e-05 m^2 delta_flux_hole = -4.126619e-07 Tm^2 delta_flux_gap = -4.816553e-07 Tm^2 delta_flux_sample = -1.348737e-05 Tm^2 delta_B = -5.063427e-02 T H_fin = -5.539928e+04 A/m 14:43:22 Measured H and B values: H = -55399.283103 A/m B = -0.869469 T 14:43:23 Hall Probe Field Measurement, B = -0.070320 T 14:43:23 Integrated Voltage Measurement... 14:43:24 Magnet current ramping to -8.0000 A... 14:44:05 Voltage Offset Correction: v_off_ini = 0.000001553 V, v_off_fin = 0.000000147 V 14:44:06 Integrated Voltage Measurement Imag = -8.0000 A VT = -0.001560179 Vs 14:44:06 Hall Probe Field Measurement, B = -0.091920 T 14:44:06 Calculate delta B and H from the cylinder Ifin = -8.000000 A B_hall_ini = -0.070320 T B_hall_fin = -0.091920 T VT = -1.560179e-03 V sec N_turns_coil = 180 delta_flux_1_turn = -8.667661e-06 V sec coil_area = 3.069131e-04 m^2 sample_OD_area = 2.848734e-04 m^2 sample_ID_area = 1.850502e-05 m^2 hole_area = 1.850502e-05 m^2 sample_area = 2.663684e-04 m^2 gap_area = 2.203969e-05 m^2 delta_flux_hole = -3.997084e-07 Tm^2 delta_flux_gap = -4.665361e-07 Tm^2 delta_flux_sample = -7.801417e-06 Tm^2 delta_B = -2.928807e-02 T H_fin = -7.241613e+04 A/m 14:44:06 Measured H and B values: H = -72416.127742 A/m B = -0.898758 T 14:44:07 Hall Probe Field Measurement, B = -0.091930 T 14:44:07 Integrated Voltage Measurement... 14:44:08 Magnet current ramping to -10.0000 A... 14:44:50 Voltage Offset Correction: v_off_ini = -0.000002754 V, v_off_fin = 0.000000312 V 14:44:50 Integrated Voltage Measurement Imag = -10.0000 A VT = -0.001027777 Vs 14:44:50 Hall Probe Field Measurement, B = -0.108200 T 14:44:50 Calculate delta B and H from the cylinder Ifin = -10.000000 A B_hall_ini = -0.091930 T B_hall_fin = -0.108200 T VT = -1.027777e-03 V sec N_turns_coil = 180 delta_flux_1_turn = -5.709870e-06 V sec coil_area = 3.069131e-04 m^2 sample_OD_area = 2.848734e-04 m^2 sample_ID_area = 1.850502e-05 m^2 hole_area = 1.850502e-05 m^2 sample_area = 2.663684e-04 m^2 gap_area = 2.203969e-05 m^2 delta_flux_hole = -3.010766e-07 Tm^2 delta_flux_gap = -3.514140e-07 Tm^2 delta_flux_sample = -5.057380e-06 Tm^2 delta_B = -1.898641e-02 T H_fin = -8.524179e+04 A/m 14:44:50 Measured H and B values: H = -85241.786571 A/m B = -0.917744 T 14:44:51 Hall Probe Field Measurement, B = -0.108190 T 14:44:51 Integrated Voltage Measurement... 14:44:52 Magnet current ramping to -12.0000 A... 14:45:34 Voltage Offset Correction: v_off_ini = -0.000000536 V, v_off_fin = -0.000000286 V 14:45:34 Integrated Voltage Measurement Imag = -12.0000 A VT = -0.000610481 Vs 14:45:34 Hall Probe Field Measurement, B = -0.118290 T 14:45:34 Calculate delta B and H from the cylinder Ifin = -12.000000 A B_hall_ini = -0.108190 T B_hall_fin = -0.118290 T VT = -6.104807e-04 V sec N_turns_coil = 180 delta_flux_1_turn = -3.391559e-06 V sec coil_area = 3.069131e-04 m^2 sample_OD_area = 2.848734e-04 m^2 sample_ID_area = 1.850502e-05 m^2 hole_area = 1.850502e-05 m^2 sample_area = 2.663684e-04 m^2 gap_area = 2.203969e-05 m^2 delta_flux_hole = -1.869007e-07 Tm^2 delta_flux_gap = -2.181488e-07 Tm^2 delta_flux_sample = -2.986510e-06 Tm^2 delta_B = -1.121195e-02 T H_fin = -9.319086e+04 A/m 14:45:34 Measured H and B values: H = -93190.858905 A/m B = -0.928956 T 14:45:35 Hall Probe Field Measurement, B = -0.118280 T 14:45:35 Integrated Voltage Measurement... 14:45:36 Magnet current ramping to -10.0000 A... 14:46:18 Voltage Offset Correction: v_off_ini = 0.000000131 V, v_off_fin = -0.000001223 V 14:46:18 Integrated Voltage Measurement Imag = -10.0000 A VT = 0.000557894 Vs 14:46:18 Hall Probe Field Measurement, B = -0.109670 T 14:46:18 Calculate delta B and H from the cylinder Ifin = -10.000000 A B_hall_ini = -0.118280 T B_hall_fin = -0.109670 T VT = 5.578940e-04 V sec N_turns_coil = 180 delta_flux_1_turn = 3.099411e-06 V sec coil_area = 3.069131e-04 m^2 sample_OD_area = 2.848734e-04 m^2 sample_ID_area = 1.850502e-05 m^2 hole_area = 1.850502e-05 m^2 sample_area = 2.663684e-04 m^2 gap_area = 2.203969e-05 m^2 delta_flux_hole = 1.593282e-07 Tm^2 delta_flux_gap = 1.859665e-07 Tm^2 delta_flux_sample = 2.754116e-06 Tm^2 delta_B = 1.033950e-02 T H_fin = -8.639988e+04 A/m 14:46:18 Measured H and B values: H = -86399.877387 A/m B = -0.918616 T 14:46:19 Hall Probe Field Measurement, B = -0.109670 T 14:46:19 Integrated Voltage Measurement... 14:46:20 Magnet current ramping to -8.0000 A... 14:47:02 Voltage Offset Correction: v_off_ini = -0.000001154 V, v_off_fin = 0.000001443 V 14:47:02 Integrated Voltage Measurement Imag = -8.0000 A VT = 0.000956772 Vs 14:47:02 Hall Probe Field Measurement, B = -0.094760 T 14:47:02 Calculate delta B and H from the cylinder Ifin = -8.000000 A B_hall_ini = -0.109670 T B_hall_fin = -0.094760 T VT = 9.567725e-04 V sec N_turns_coil = 180 delta_flux_1_turn = 5.315403e-06 V sec coil_area = 3.069131e-04 m^2 sample_OD_area = 2.848734e-04 m^2 sample_ID_area = 1.850502e-05 m^2 hole_area = 1.850502e-05 m^2 sample_area = 2.663684e-04 m^2 gap_area = 2.203969e-05 m^2 delta_flux_hole = 2.759098e-07 Tm^2 delta_flux_gap = 3.220395e-07 Tm^2 delta_flux_sample = 4.717453e-06 Tm^2 delta_B = 1.771026e-02 T H_fin = -7.465353e+04 A/m 14:47:02 Measured H and B values: H = -74653.527685 A/m B = -0.900906 T 14:47:03 Hall Probe Field Measurement, B = -0.094760 T 14:47:03 Integrated Voltage Measurement... 14:47:04 Magnet current ramping to -6.0000 A... 14:47:46 Voltage Offset Correction: v_off_ini = 0.000001244 V, v_off_fin = 0.000000902 V 14:47:46 Integrated Voltage Measurement Imag = -6.0000 A VT = 0.001509665 Vs 14:47:46 Hall Probe Field Measurement, B = -0.073130 T 14:47:46 Calculate delta B and H from the cylinder Ifin = -6.000000 A B_hall_ini = -0.094760 T B_hall_fin = -0.073130 T VT = 1.509665e-03 V sec N_turns_coil = 180 delta_flux_1_turn = 8.387029e-06 V sec coil_area = 3.069131e-04 m^2 sample_OD_area = 2.848734e-04 m^2 sample_ID_area = 1.850502e-05 m^2 hole_area = 1.850502e-05 m^2 sample_area = 2.663684e-04 m^2 gap_area = 2.203969e-05 m^2 delta_flux_hole = 4.002635e-07 Tm^2 delta_flux_gap = 4.671841e-07 Tm^2 delta_flux_sample = 7.519582e-06 Tm^2 delta_B = 2.823001e-02 T H_fin = -5.761305e+04 A/m 14:47:46 Measured H and B values: H = -57613.048539 A/m B = -0.872676 T 14:47:47 Hall Probe Field Measurement, B = -0.073130 T 14:47:47 Integrated Voltage Measurement... 14:47:48 Magnet current ramping to -4.0000 A... 14:48:30 Voltage Offset Correction: v_off_ini = 0.000000604 V, v_off_fin = 0.000001466 V 14:48:30 Integrated Voltage Measurement Imag = -4.0000 A VT = 0.002321990 Vs 14:48:30 Hall Probe Field Measurement, B = -0.050720 T 14:48:30 Calculate delta B and H from the cylinder Ifin = -4.000000 A B_hall_ini = -0.073130 T B_hall_fin = -0.050720 T VT = 2.321990e-03 V sec N_turns_coil = 180 delta_flux_1_turn = 1.289994e-05 V sec coil_area = 3.069131e-04 m^2 sample_OD_area = 2.848734e-04 m^2 sample_ID_area = 1.850502e-05 m^2 hole_area = 1.850502e-05 m^2 sample_area = 2.663684e-04 m^2 gap_area = 2.203969e-05 m^2 delta_flux_hole = 4.146974e-07 Tm^2 delta_flux_gap = 4.840312e-07 Tm^2 delta_flux_sample = 1.200121e-05 Tm^2 delta_B = 4.505495e-02 T H_fin = -3.995807e+04 A/m 14:48:30 Measured H and B values: H = -39958.072226 A/m B = -0.827621 T 14:48:31 Hall Probe Field Measurement, B = -0.050720 T 14:48:31 Integrated Voltage Measurement... 14:48:32 Magnet current ramping to -2.0000 A... 14:49:14 Voltage Offset Correction: v_off_ini = 0.000001304 V, v_off_fin = -0.000000368 V 14:49:14 Integrated Voltage Measurement Imag = -2.0000 A VT = 0.006776716 Vs 14:49:14 Hall Probe Field Measurement, B = -0.026580 T 14:49:14 Calculate delta B and H from the cylinder Ifin = -2.000000 A B_hall_ini = -0.050720 T B_hall_fin = -0.026580 T VT = 6.776716e-03 V sec N_turns_coil = 180 delta_flux_1_turn = 3.764842e-05 V sec coil_area = 3.069131e-04 m^2 sample_OD_area = 2.848734e-04 m^2 sample_ID_area = 1.850502e-05 m^2 hole_area = 1.850502e-05 m^2 sample_area = 2.663684e-04 m^2 gap_area = 2.203969e-05 m^2 delta_flux_hole = 4.467111e-07 Tm^2 delta_flux_gap = 5.213973e-07 Tm^2 delta_flux_sample = 3.668031e-05 Tm^2 delta_B = 1.377052e-01 T H_fin = -2.094017e+04 A/m 14:49:14 Measured H and B values: H = -20940.172709 A/m B = -0.689916 T 14:49:15 Hall Probe Field Measurement, B = -0.026580 T 14:49:15 Integrated Voltage Measurement... 14:49:16 Magnet current ramping to -1.0000 A... 14:49:48 Voltage Offset Correction: v_off_ini = 0.000001765 V, v_off_fin = 0.000025997 V 14:49:48 Integrated Voltage Measurement Imag = -1.0000 A VT = 0.006768362 Vs 14:49:49 Hall Probe Field Measurement, B = -0.013510 T 14:49:49 Calculate delta B and H from the cylinder Ifin = -1.000000 A B_hall_ini = -0.026580 T B_hall_fin = -0.013510 T VT = 6.768362e-03 V sec N_turns_coil = 180 delta_flux_1_turn = 3.760201e-05 V sec coil_area = 3.069131e-04 m^2 sample_OD_area = 2.848734e-04 m^2 sample_ID_area = 1.850502e-05 m^2 hole_area = 1.850502e-05 m^2 sample_area = 2.663684e-04 m^2 gap_area = 2.203969e-05 m^2 delta_flux_hole = 2.418606e-07 Tm^2 delta_flux_gap = 2.822975e-07 Tm^2 delta_flux_sample = 3.707785e-05 Tm^2 delta_B = 1.391976e-01 T H_fin = -1.064341e+04 A/m 14:49:49 Measured H and B values: H = -10643.406068 A/m B = -0.550718 T 14:49:49 Hall Probe Field Measurement, B = -0.013510 T 14:49:49 Integrated Voltage Measurement... 14:49:51 Magnet current ramping to -0.8000 A... 14:50:15 Voltage Offset Correction: v_off_ini = 0.000000535 V, v_off_fin = 0.000000409 V 14:50:15 Integrated Voltage Measurement Imag = -0.8000 A VT = 0.001906764 Vs 14:50:16 Hall Probe Field Measurement, B = -0.010890 T 14:50:16 Calculate delta B and H from the cylinder Ifin = -0.800000 A B_hall_ini = -0.013510 T B_hall_fin = -0.010890 T VT = 1.906764e-03 V sec N_turns_coil = 180 delta_flux_1_turn = 1.059314e-05 V sec coil_area = 3.069131e-04 m^2 sample_OD_area = 2.848734e-04 m^2 sample_ID_area = 1.850502e-05 m^2 hole_area = 1.850502e-05 m^2 sample_area = 2.663684e-04 m^2 gap_area = 2.203969e-05 m^2 delta_flux_hole = 4.848314e-08 Tm^2 delta_flux_gap = 5.658910e-08 Tm^2 delta_flux_sample = 1.048806e-05 Tm^2 delta_B = 3.937428e-02 T H_fin = -8.579326e+03 A/m 14:50:16 Measured H and B values: H = -8579.325839 A/m B = -0.511344 T 14:50:16 Hall Probe Field Measurement, B = -0.010890 T 14:50:16 Integrated Voltage Measurement... 14:50:17 Magnet current ramping to -0.6000 A... 14:50:42 Voltage Offset Correction: v_off_ini = 0.000001419 V, v_off_fin = 0.000002075 V 14:50:42 Integrated Voltage Measurement Imag = -0.6000 A VT = 0.002276863 Vs 14:50:43 Hall Probe Field Measurement, B = -0.008170 T 14:50:43 Calculate delta B and H from the cylinder Ifin = -0.600000 A B_hall_ini = -0.010890 T B_hall_fin = -0.008170 T VT = 2.276863e-03 V sec N_turns_coil = 180 delta_flux_1_turn = 1.264924e-05 V sec coil_area = 3.069131e-04 m^2 sample_OD_area = 2.848734e-04 m^2 sample_ID_area = 1.850502e-05 m^2 hole_area = 1.850502e-05 m^2 sample_area = 2.663684e-04 m^2 gap_area = 2.203969e-05 m^2 delta_flux_hole = 5.033364e-08 Tm^2 delta_flux_gap = 5.874899e-08 Tm^2 delta_flux_sample = 1.254016e-05 Tm^2 delta_B = 4.707825e-02 T H_fin = -6.436464e+03 A/m 14:50:43 Measured H and B values: H = -6436.463921 A/m B = -0.464266 T 14:50:44 Hall Probe Field Measurement, B = -0.008180 T 14:50:44 Integrated Voltage Measurement... 14:50:45 Magnet current ramping to -0.4000 A... 14:51:09 Voltage Offset Correction: v_off_ini = 0.000000116 V, v_off_fin = 0.000001625 V 14:51:09 Integrated Voltage Measurement Imag = -0.4000 A VT = 0.002807072 Vs 14:51:10 Hall Probe Field Measurement, B = -0.005470 T 14:51:10 Calculate delta B and H from the cylinder Ifin = -0.400000 A B_hall_ini = -0.008180 T B_hall_fin = -0.005470 T VT = 2.807072e-03 V sec N_turns_coil = 180 delta_flux_1_turn = 1.559485e-05 V sec coil_area = 3.069131e-04 m^2 sample_OD_area = 2.848734e-04 m^2 sample_ID_area = 1.850502e-05 m^2 hole_area = 1.850502e-05 m^2 sample_area = 2.663684e-04 m^2 gap_area = 2.203969e-05 m^2 delta_flux_hole = 5.014859e-08 Tm^2 delta_flux_gap = 5.853300e-08 Tm^2 delta_flux_sample = 1.548617e-05 Tm^2 delta_B = 5.813815e-02 T H_fin = -4.309358e+03 A/m 14:51:10 Measured H and B values: H = -4309.358341 A/m B = -0.406128 T 14:51:11 Hall Probe Field Measurement, B = -0.005480 T 14:51:11 Integrated Voltage Measurement... 14:51:12 Magnet current ramping to -0.2000 A... 14:51:36 Voltage Offset Correction: v_off_ini = 0.000001488 V, v_off_fin = 0.000001368 V 14:51:36 Integrated Voltage Measurement Imag = -0.2000 A VT = 0.004174602 Vs 14:51:37 Hall Probe Field Measurement, B = -0.002800 T 14:51:37 Calculate delta B and H from the cylinder Ifin = -0.200000 A B_hall_ini = -0.005480 T B_hall_fin = -0.002800 T VT = 4.174602e-03 V sec N_turns_coil = 180 delta_flux_1_turn = 2.319223e-05 V sec coil_area = 3.069131e-04 m^2 sample_OD_area = 2.848734e-04 m^2 sample_ID_area = 1.850502e-05 m^2 hole_area = 1.850502e-05 m^2 sample_area = 2.663684e-04 m^2 gap_area = 2.203969e-05 m^2 delta_flux_hole = 4.959344e-08 Tm^2 delta_flux_gap = 5.788504e-08 Tm^2 delta_flux_sample = 2.308475e-05 Tm^2 delta_B = 8.666477e-02 T H_fin = -2.205887e+03 A/m 14:51:37 Measured H and B values: H = -2205.887268 A/m B = -0.319463 T 14:51:38 Hall Probe Field Measurement, B = -0.002800 T 14:51:38 Integrated Voltage Measurement... 14:51:39 Magnet current ramping to 0.0000 A... 14:52:03 Voltage Offset Correction: v_off_ini = 0.000000596 V, v_off_fin = 0.000027053 V 14:52:03 Integrated Voltage Measurement Imag = 0.0000 A VT = 0.013301632 Vs 14:52:04 Hall Probe Field Measurement, B = -0.000420 T 14:52:04 Calculate delta B and H from the cylinder Ifin = 0.000000 A B_hall_ini = -0.002800 T B_hall_fin = -0.000420 T VT = 1.330163e-02 V sec N_turns_coil = 180 delta_flux_1_turn = 7.389795e-05 V sec coil_area = 3.069131e-04 m^2 sample_OD_area = 2.848734e-04 m^2 sample_ID_area = 1.850502e-05 m^2 hole_area = 1.850502e-05 m^2 sample_area = 2.663684e-04 m^2 gap_area = 2.203969e-05 m^2 delta_flux_hole = 4.404194e-08 Tm^2 delta_flux_gap = 5.140537e-08 Tm^2 delta_flux_sample = 7.380251e-05 Tm^2 delta_B = 2.770693e-01 T H_fin = -3.308831e+02 A/m 14:52:04 Measured H and B values: H = -330.883090 A/m B = -0.042394 T 14:52:04 Summary of measured B and H values: i H B (A/m) (T) --- ---------- ---------- 0 -346.64 0.000293 1 283.61 1.972961 2 1772.59 2.673320 3 3797.28 2.808328 4 5932.26 2.880306 5 8012.10 2.932267 6 18379.77 3.102284 7 37626.13 3.261139 8 55170.82 3.312132 9 72219.17 3.341716 10 85099.98 3.361079 11 93088.44 3.372578 12 86289.58 3.362887 13 74472.33 3.345052 14 57416.09 3.316293 15 39761.12 3.270935 16 20735.34 3.131694 17 10430.70 2.986753 18 8366.62 2.947520 19 6239.51 2.899707 20 4112.40 2.840037 21 2008.93 2.747840 22 236.35 2.399853 23 -346.64 0.300626 24 -1961.66 -0.245428 25 -4009.99 -0.368188 26 -6144.97 -0.437462 27 -8232.69 -0.490895 28 -18592.48 -0.658150 29 -37830.97 -0.818835 30 -55399.28 -0.869469 31 -72416.13 -0.898758 32 -85241.79 -0.917744 33 -93190.86 -0.928956 34 -86399.88 -0.918616 35 -74653.53 -0.900906 36 -57613.05 -0.872676 37 -39958.07 -0.827621 38 -20940.17 -0.689916 39 -10643.41 -0.550718 40 -8579.33 -0.511344 41 -6436.46 -0.464266 42 -4309.36 -0.406128 43 -2205.89 -0.319463 44 -330.88 -0.042394 14:52:04 Symmetrized B and H values: i H B (A/m) (T) --- ---------- ---------- 0 -346.64 -1.221518 1 283.61 0.751150 2 1772.59 1.451509 3 3797.28 1.586517 4 5932.26 1.658495 5 8012.10 1.710456 6 18379.77 1.880473 7 37626.13 2.039328 8 55170.82 2.090321 9 72219.17 2.119905 10 85099.98 2.139269 11 93088.44 2.150767 12 86289.58 2.141076 13 74472.33 2.123241 14 57416.09 2.094482 15 39761.12 2.049124 16 20735.34 1.909883 17 10430.70 1.764942 18 8366.62 1.725710 19 6239.51 1.677897 20 4112.40 1.618226 21 2008.93 1.526029 22 236.35 1.178042 23 -346.64 -0.921185 24 -1961.66 -1.467239 25 -4009.99 -1.589999 26 -6144.97 -1.659273 27 -8232.69 -1.712706 28 -18592.48 -1.879961 29 -37830.97 -2.040646 30 -55399.28 -2.091280 31 -72416.13 -2.120568 32 -85241.79 -2.139555 33 -93190.86 -2.150767 34 -86399.88 -2.140427 35 -74653.53 -2.122717 36 -57613.05 -2.094487 37 -39958.07 -2.049432 38 -20940.17 -1.911727 39 -10643.41 -1.772529 40 -8579.33 -1.733155 41 -6436.46 -1.686077 42 -4309.36 -1.627939 43 -2205.89 -1.541274 44 -330.88 -1.264204 14:52:04 Magnet current ramping to 0.0000 A...