SLAC Magnetic Measurements Date: 05-03-2002 Time: 15:57:05 Project: Spear3 Magnet Type: Permeameter Magnet Name: Aluminum Serial Number: Run Number: 2 Measurement Device: permeameter Operator: zw Comment: repeat measurement 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 15:58:16 Hall Probe Zeroed 15:58:31 Hall Probe Type Being Used, type = B9900 15:58:33 Initial Zero Current Measurement, Imag_zero = 0.0000 A 15:58:33 Magnet current ramping to 12.0000 A... 15:58:55 Magnet current ramping to -12.0000 A... 15:59:34 Magnet current ramping to 12.0000 A... 16:00:13 Magnet current ramping to -12.0000 A... 16:00:52 Magnet current ramping to 12.0000 A... 16:01:31 Magnet current ramping to -12.0000 A... 16:02:10 Magnet current ramping to 0.0000 A... 16:03:19 Hall Probe Range Set, range = 4 16:03:19 Hysteresis Loop Measurement Sample Geometry: cylinder 16:03:20 Hall Probe Field Measurement, B = -0.001480 T 16:03:20 Integrated Voltage Measurement... 16:03:21 Magnet current ramping to 0.0000 A... 16:03:36 Voltage Offset Correction: v_off_ini = 0.000005084 V, v_off_fin = 0.000004695 V 16:03:36 Integrated Voltage Measurement Imag = 0.0000 A VT = -0.000002629 Vs 16:03:36 Hall Probe Field Measurement, B = -0.001480 T 16:03:36 Calculate delta B and H from the cylinder Ifin = 0.000000 A B_hall_ini = -0.001480 T B_hall_fin = -0.001480 T VT = -2.628815e-06 V sec N_turns_coil = 180 delta_flux_1_turn = -1.460453e-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 = -1.460453e-08 Tm^2 delta_B = -5.482830e-05 T H_fin = -1.165969e+03 A/m 16:03:36 Measured H and B values: H = -1165.968985 A/m B = -0.000055 T 16:03:37 Hall Probe Field Measurement, B = -0.001480 T 16:03:37 Integrated Voltage Measurement... 16:03:38 Magnet current ramping to 0.2000 A... 16:03:54 Voltage Offset Correction: v_off_ini = 0.000004876 V, v_off_fin = 0.000003799 V 16:03:54 Integrated Voltage Measurement Imag = 0.2000 A VT = 0.000141642 Vs 16:03:55 Hall Probe Field Measurement, B = 0.001040 T 16:03:55 Calculate delta B and H from the cylinder Ifin = 0.200000 A B_hall_ini = -0.001480 T B_hall_fin = 0.001040 T VT = 1.416422e-04 V sec N_turns_coil = 180 delta_flux_1_turn = 7.869013e-07 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 = 4.663264e-08 Tm^2 delta_flux_gap = 5.442921e-08 Tm^2 delta_flux_sample = 6.858394e-07 Tm^2 delta_B = 2.574778e-03 T H_fin = 8.193296e+02 A/m 16:03:55 Measured H and B values: H = 819.329557 A/m B = 0.002520 T 16:03:55 Hall Probe Field Measurement, B = 0.001040 T 16:03:55 Integrated Voltage Measurement... 16:03:56 Magnet current ramping to 0.4000 A... 16:04:13 Voltage Offset Correction: v_off_ini = 0.000004607 V, v_off_fin = 0.000004876 V 16:04:13 Integrated Voltage Measurement Imag = 0.4000 A VT = 0.000136986 Vs 16:04:13 Hall Probe Field Measurement, B = 0.003570 T 16:04:13 Calculate delta B and H from the cylinder Ifin = 0.400000 A B_hall_ini = 0.001040 T B_hall_fin = 0.003570 T VT = 1.369861e-04 V sec N_turns_coil = 180 delta_flux_1_turn = 7.610337e-07 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 = 4.681769e-08 Tm^2 delta_flux_gap = 5.464520e-08 Tm^2 delta_flux_sample = 6.595708e-07 Tm^2 delta_B = 2.476160e-03 T H_fin = 2.812506e+03 A/m 16:04:13 Measured H and B values: H = 2812.506267 A/m B = 0.004996 T 16:04:14 Hall Probe Field Measurement, B = 0.003570 T 16:04:14 Integrated Voltage Measurement... 16:04:15 Magnet current ramping to 0.6000 A... 16:04:31 Voltage Offset Correction: v_off_ini = 0.000004307 V, v_off_fin = 0.000004726 V 16:04:31 Integrated Voltage Measurement Imag = 0.6000 A VT = 0.000139500 Vs 16:04:32 Hall Probe Field Measurement, B = 0.006110 T 16:04:32 Calculate delta B and H from the cylinder Ifin = 0.600000 A B_hall_ini = 0.003570 T B_hall_fin = 0.006110 T VT = 1.395003e-04 V sec N_turns_coil = 180 delta_flux_1_turn = 7.750018e-07 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 = 4.700274e-08 Tm^2 delta_flux_gap = 5.486119e-08 Tm^2 delta_flux_sample = 6.731379e-07 Tm^2 delta_B = 2.527094e-03 T H_fin = 4.813561e+03 A/m 16:04:32 Measured H and B values: H = 4813.561146 A/m B = 0.007523 T 16:04:32 Hall Probe Field Measurement, B = 0.006100 T 16:04:32 Integrated Voltage Measurement... 16:04:33 Magnet current ramping to 0.8000 A... 16:04:50 Voltage Offset Correction: v_off_ini = 0.000003649 V, v_off_fin = 0.000004876 V 16:04:50 Integrated Voltage Measurement Imag = 0.8000 A VT = 0.000143272 Vs 16:04:50 Hall Probe Field Measurement, B = 0.008680 T 16:04:50 Calculate delta B and H from the cylinder Ifin = 0.800000 A B_hall_ini = 0.006100 T B_hall_fin = 0.008680 T VT = 1.432715e-04 V sec N_turns_coil = 180 delta_flux_1_turn = 7.959529e-07 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 = 4.774294e-08 Tm^2 delta_flux_gap = 5.572515e-08 Tm^2 delta_flux_sample = 6.924848e-07 Tm^2 delta_B = 2.599726e-03 T H_fin = 6.838251e+03 A/m 16:04:50 Measured H and B values: H = 6838.250531 A/m B = 0.010123 T 16:04:51 Hall Probe Field Measurement, B = 0.008670 T 16:04:51 Integrated Voltage Measurement... 16:04:52 Magnet current ramping to 1.0000 A... 16:05:08 Voltage Offset Correction: v_off_ini = 0.000004487 V, v_off_fin = 0.000003829 V 16:05:08 Integrated Voltage Measurement Imag = 1.0000 A VT = 0.000141601 Vs 16:05:08 Hall Probe Field Measurement, B = 0.011190 T 16:05:08 Calculate delta B and H from the cylinder Ifin = 1.000000 A B_hall_ini = 0.008670 T B_hall_fin = 0.011190 T VT = 1.416011e-04 V sec N_turns_coil = 180 delta_flux_1_turn = 7.866725e-07 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 = 4.663264e-08 Tm^2 delta_flux_gap = 5.442921e-08 Tm^2 delta_flux_sample = 6.856107e-07 Tm^2 delta_B = 2.573919e-03 T H_fin = 8.815671e+03 A/m 16:05:08 Measured H and B values: H = 8815.670903 A/m B = 0.012697 T 16:05:09 Hall Probe Field Measurement, B = 0.011190 T 16:05:09 Integrated Voltage Measurement... 16:05:10 Magnet current ramping to 2.0000 A... 16:05:31 Voltage Offset Correction: v_off_ini = 0.000004401 V, v_off_fin = 0.000004580 V 16:05:31 Integrated Voltage Measurement Imag = 2.0000 A VT = 0.000695728 Vs 16:05:32 Hall Probe Field Measurement, B = 0.023880 T 16:05:32 Calculate delta B and H from the cylinder Ifin = 2.000000 A B_hall_ini = 0.011190 T B_hall_fin = 0.023880 T VT = 6.957283e-04 V sec N_turns_coil = 180 delta_flux_1_turn = 3.865157e-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 = 2.348287e-07 Tm^2 delta_flux_gap = 2.740900e-07 Tm^2 delta_flux_sample = 3.356239e-06 Tm^2 delta_B = 1.259999e-02 T H_fin = 1.881307e+04 A/m 16:05:32 Measured H and B values: H = 18813.067129 A/m B = 0.025297 T 16:05:32 Hall Probe Field Measurement, B = 0.023880 T 16:05:32 Integrated Voltage Measurement... 16:05:33 Magnet current ramping to 4.0000 A... 16:06:01 Voltage Offset Correction: v_off_ini = 0.000005331 V, v_off_fin = 0.000004702 V 16:06:01 Integrated Voltage Measurement Imag = 4.0000 A VT = 0.001365537 Vs 16:06:01 Hall Probe Field Measurement, B = 0.049040 T 16:06:01 Calculate delta B and H from the cylinder Ifin = 4.000000 A B_hall_ini = 0.023880 T B_hall_fin = 0.049040 T VT = 1.365537e-03 V sec N_turns_coil = 180 delta_flux_1_turn = 7.586317e-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 = 4.655862e-07 Tm^2 delta_flux_gap = 5.434282e-07 Tm^2 delta_flux_sample = 6.577303e-06 Tm^2 delta_B = 2.469251e-02 T H_fin = 3.863454e+04 A/m 16:06:01 Measured H and B values: H = 38634.539866 A/m B = 0.049989 T 16:06:02 Hall Probe Field Measurement, B = 0.049040 T 16:06:02 Integrated Voltage Measurement... 16:06:03 Magnet current ramping to 6.0000 A... 16:06:30 Voltage Offset Correction: v_off_ini = 0.000004762 V, v_off_fin = 0.000004852 V 16:06:30 Integrated Voltage Measurement Imag = 6.0000 A VT = 0.001339434 Vs 16:06:30 Hall Probe Field Measurement, B = 0.073610 T 16:06:30 Calculate delta B and H from the cylinder Ifin = 6.000000 A B_hall_ini = 0.049040 T B_hall_fin = 0.073610 T VT = 1.339434e-03 V sec N_turns_coil = 180 delta_flux_1_turn = 7.441300e-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 = 4.546683e-07 Tm^2 delta_flux_gap = 5.306848e-07 Tm^2 delta_flux_sample = 6.455946e-06 Tm^2 delta_B = 2.423691e-02 T H_fin = 5.799120e+04 A/m 16:06:30 Measured H and B values: H = 57991.200642 A/m B = 0.074226 T 16:06:31 Hall Probe Field Measurement, B = 0.073610 T 16:06:31 Integrated Voltage Measurement... 16:06:32 Magnet current ramping to 8.0000 A... 16:06:59 Voltage Offset Correction: v_off_ini = 0.000004373 V, v_off_fin = 0.000004523 V 16:06:59 Integrated Voltage Measurement Imag = 8.0000 A VT = 0.001290874 Vs 16:06:59 Hall Probe Field Measurement, B = 0.097180 T 16:06:59 Calculate delta B and H from the cylinder Ifin = 8.000000 A B_hall_ini = 0.073610 T B_hall_fin = 0.097180 T VT = 1.290874e-03 V sec N_turns_coil = 180 delta_flux_1_turn = 7.171524e-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 = 4.361632e-07 Tm^2 delta_flux_gap = 5.090859e-07 Tm^2 delta_flux_sample = 6.226275e-06 Tm^2 delta_B = 2.337468e-02 T H_fin = 7.656004e+04 A/m 16:06:59 Measured H and B values: H = 76560.044538 A/m B = 0.097601 T 16:07:00 Hall Probe Field Measurement, B = 0.097170 T 16:07:00 Integrated Voltage Measurement... 16:07:01 Magnet current ramping to 10.0000 A... 16:07:28 Voltage Offset Correction: v_off_ini = 0.000004702 V, v_off_fin = 0.000004583 V 16:07:28 Integrated Voltage Measurement Imag = 10.0000 A VT = 0.001077487 Vs 16:07:28 Hall Probe Field Measurement, B = 0.116930 T 16:07:28 Calculate delta B and H from the cylinder Ifin = 10.000000 A B_hall_ini = 0.097170 T B_hall_fin = 0.116930 T VT = 1.077487e-03 V sec N_turns_coil = 180 delta_flux_1_turn = 5.986037e-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 = 3.656591e-07 Tm^2 delta_flux_gap = 4.267941e-07 Tm^2 delta_flux_sample = 5.193583e-06 Tm^2 delta_B = 1.949775e-02 T H_fin = 9.211943e+04 A/m 16:07:28 Measured H and B values: H = 92119.427946 A/m B = 0.117099 T 16:07:29 Hall Probe Field Measurement, B = 0.116930 T 16:07:29 Integrated Voltage Measurement... 16:07:30 Magnet current ramping to 12.0000 A... 16:07:57 Voltage Offset Correction: v_off_ini = 0.000004553 V, v_off_fin = 0.000004672 V 16:07:57 Integrated Voltage Measurement Imag = 12.0000 A VT = 0.000676710 Vs 16:07:57 Hall Probe Field Measurement, B = 0.129320 T 16:07:57 Calculate delta B and H from the cylinder Ifin = 12.000000 A B_hall_ini = 0.116930 T B_hall_fin = 0.129320 T VT = 6.767099e-04 V sec N_turns_coil = 180 delta_flux_1_turn = 3.759499e-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 = 2.292772e-07 Tm^2 delta_flux_gap = 2.676103e-07 Tm^2 delta_flux_sample = 3.262612e-06 Tm^2 delta_B = 1.224850e-02 T H_fin = 1.018805e+05 A/m 16:07:57 Measured H and B values: H = 101880.479107 A/m B = 0.129347 T 16:07:58 Hall Probe Field Measurement, B = 0.129310 T 16:07:58 Integrated Voltage Measurement... 16:07:59 Magnet current ramping to 10.0000 A... 16:08:26 Voltage Offset Correction: v_off_ini = 0.000004672 V, v_off_fin = 0.000004642 V 16:08:26 Integrated Voltage Measurement Imag = 10.0000 A VT = -0.000573859 Vs 16:08:26 Hall Probe Field Measurement, B = 0.118920 T 16:08:26 Calculate delta B and H from the cylinder Ifin = 10.000000 A B_hall_ini = 0.129310 T B_hall_fin = 0.118920 T VT = -5.738595e-04 V sec N_turns_coil = 180 delta_flux_1_turn = -3.188108e-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 = -1.922671e-07 Tm^2 delta_flux_gap = -2.244125e-07 Tm^2 delta_flux_sample = -2.771429e-06 Tm^2 delta_B = -1.040450e-02 T H_fin = 9.368718e+04 A/m 16:08:26 Measured H and B values: H = 93687.183540 A/m B = 0.118943 T 16:08:27 Hall Probe Field Measurement, B = 0.118920 T 16:08:27 Integrated Voltage Measurement... 16:08:28 Magnet current ramping to 8.0000 A... 16:08:55 Voltage Offset Correction: v_off_ini = 0.000004493 V, v_off_fin = 0.000004223 V 16:08:55 Integrated Voltage Measurement Imag = 8.0000 A VT = -0.001032804 Vs 16:08:56 Hall Probe Field Measurement, B = 0.100030 T 16:08:56 Calculate delta B and H from the cylinder Ifin = 8.000000 A B_hall_ini = 0.118920 T B_hall_fin = 0.100030 T VT = -1.032804e-03 V sec N_turns_coil = 180 delta_flux_1_turn = -5.737801e-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 = -3.495598e-07 Tm^2 delta_flux_gap = -4.080031e-07 Tm^2 delta_flux_sample = -4.980239e-06 Tm^2 delta_B = -1.869681e-02 T H_fin = 7.880532e+04 A/m 16:08:56 Measured H and B values: H = 78805.322650 A/m B = 0.100246 T 16:08:56 Hall Probe Field Measurement, B = 0.100020 T 16:08:56 Integrated Voltage Measurement... 16:08:57 Magnet current ramping to 6.0000 A... 16:09:25 Voltage Offset Correction: v_off_ini = 0.000004672 V, v_off_fin = 0.000004253 V 16:09:25 Integrated Voltage Measurement Imag = 6.0000 A VT = -0.001292424 Vs 16:09:25 Hall Probe Field Measurement, B = 0.076460 T 16:09:25 Calculate delta B and H from the cylinder Ifin = 6.000000 A B_hall_ini = 0.100020 T B_hall_fin = 0.076460 T VT = -1.292424e-03 V sec N_turns_coil = 180 delta_flux_1_turn = -7.180131e-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 = -4.359782e-07 Tm^2 delta_flux_gap = -5.088699e-07 Tm^2 delta_flux_sample = -6.235283e-06 Tm^2 delta_B = -2.340850e-02 T H_fin = 6.023648e+04 A/m 16:09:25 Measured H and B values: H = 60236.478755 A/m B = 0.076837 T 16:09:26 Hall Probe Field Measurement, B = 0.076460 T 16:09:26 Integrated Voltage Measurement... 16:09:27 Magnet current ramping to 4.0000 A... 16:09:54 Voltage Offset Correction: v_off_ini = 0.000005032 V, v_off_fin = 0.000004373 V 16:09:54 Integrated Voltage Measurement Imag = 4.0000 A VT = -0.001356956 Vs 16:09:54 Hall Probe Field Measurement, B = 0.051840 T 16:09:54 Calculate delta B and H from the cylinder Ifin = 4.000000 A B_hall_ini = 0.076460 T B_hall_fin = 0.051840 T VT = -1.356956e-03 V sec N_turns_coil = 180 delta_flux_1_turn = -7.538647e-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 = -4.555935e-07 Tm^2 delta_flux_gap = -5.317648e-07 Tm^2 delta_flux_sample = -6.551288e-06 Tm^2 delta_B = -2.459484e-02 T H_fin = 4.084043e+04 A/m 16:09:54 Measured H and B values: H = 40840.427134 A/m B = 0.052243 T 16:09:55 Hall Probe Field Measurement, B = 0.051840 T 16:09:55 Integrated Voltage Measurement... 16:09:56 Magnet current ramping to 2.0000 A... 16:10:23 Voltage Offset Correction: v_off_ini = 0.000004463 V, v_off_fin = 0.000004583 V 16:10:23 Integrated Voltage Measurement Imag = 2.0000 A VT = -0.001387200 Vs 16:10:24 Hall Probe Field Measurement, B = 0.026570 T 16:10:24 Calculate delta B and H from the cylinder Ifin = 2.000000 A B_hall_ini = 0.051840 T B_hall_fin = 0.026570 T VT = -1.387200e-03 V sec N_turns_coil = 180 delta_flux_1_turn = -7.706664e-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 = -4.676218e-07 Tm^2 delta_flux_gap = -5.458041e-07 Tm^2 delta_flux_sample = -6.693239e-06 Tm^2 delta_B = -2.512775e-02 T H_fin = 2.093229e+04 A/m 16:10:24 Measured H and B values: H = 20932.294540 A/m B = 0.027115 T 16:10:24 Hall Probe Field Measurement, B = 0.026570 T 16:10:24 Integrated Voltage Measurement... 16:10:25 Magnet current ramping to 1.0000 A... 16:10:46 Voltage Offset Correction: v_off_ini = 0.000004790 V, v_off_fin = 0.000004341 V 16:10:46 Integrated Voltage Measurement Imag = 1.0000 A VT = -0.000697398 Vs 16:10:47 Hall Probe Field Measurement, B = 0.013870 T 16:10:47 Calculate delta B and H from the cylinder Ifin = 1.000000 A B_hall_ini = 0.026570 T B_hall_fin = 0.013870 T VT = -6.973980e-04 V sec N_turns_coil = 180 delta_flux_1_turn = -3.874433e-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 = -2.350137e-07 Tm^2 delta_flux_gap = -2.743060e-07 Tm^2 delta_flux_sample = -3.365113e-06 Tm^2 delta_B = -1.263331e-02 T H_fin = 1.092702e+04 A/m 16:10:47 Measured H and B values: H = 10927.020146 A/m B = 0.014481 T 16:10:47 Hall Probe Field Measurement, B = 0.013870 T 16:10:47 Integrated Voltage Measurement... 16:10:49 Magnet current ramping to 0.8000 A... 16:11:05 Voltage Offset Correction: v_off_ini = 0.000004218 V, v_off_fin = 0.000003859 V 16:11:05 Integrated Voltage Measurement Imag = 0.8000 A VT = -0.000131775 Vs 16:11:05 Hall Probe Field Measurement, B = 0.011360 T 16:11:05 Calculate delta B and H from the cylinder Ifin = 0.800000 A B_hall_ini = 0.013870 T B_hall_fin = 0.011360 T VT = -1.317749e-04 V sec N_turns_coil = 180 delta_flux_1_turn = -7.320829e-07 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 = -4.644759e-08 Tm^2 delta_flux_gap = -5.421322e-08 Tm^2 delta_flux_sample = -6.314221e-07 Tm^2 delta_B = -2.370484e-03 T H_fin = 8.949600e+03 A/m 16:11:05 Measured H and B values: H = 8949.599773 A/m B = 0.012111 T 16:11:06 Hall Probe Field Measurement, B = 0.011360 T 16:11:06 Integrated Voltage Measurement... 16:11:07 Magnet current ramping to 0.6000 A... 16:11:23 Voltage Offset Correction: v_off_ini = 0.000005594 V, v_off_fin = 0.000003500 V 16:11:23 Integrated Voltage Measurement Imag = 0.6000 A VT = -0.000140725 Vs 16:11:24 Hall Probe Field Measurement, B = 0.008800 T 16:11:24 Calculate delta B and H from the cylinder Ifin = 0.600000 A B_hall_ini = 0.011360 T B_hall_fin = 0.008800 T VT = -1.407251e-04 V sec N_turns_coil = 180 delta_flux_1_turn = -7.818063e-07 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 = -4.737284e-08 Tm^2 delta_flux_gap = -5.529317e-08 Tm^2 delta_flux_sample = -6.791403e-07 Tm^2 delta_B = -2.549628e-03 T H_fin = 6.932789e+03 A/m 16:11:24 Measured H and B values: H = 6932.788557 A/m B = 0.009561 T 16:11:24 Hall Probe Field Measurement, B = 0.008790 T 16:11:24 Integrated Voltage Measurement... 16:11:25 Magnet current ramping to 0.4000 A... 16:11:41 Voltage Offset Correction: v_off_ini = 0.000004248 V, v_off_fin = 0.000004666 V 16:11:41 Integrated Voltage Measurement Imag = 0.4000 A VT = -0.000138317 Vs 16:11:42 Hall Probe Field Measurement, B = 0.006270 T 16:11:42 Calculate delta B and H from the cylinder Ifin = 0.400000 A B_hall_ini = 0.008790 T B_hall_fin = 0.006270 T VT = -1.383167e-04 V sec N_turns_coil = 180 delta_flux_1_turn = -7.684260e-07 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 = -4.663264e-08 Tm^2 delta_flux_gap = -5.442921e-08 Tm^2 delta_flux_sample = -6.673641e-07 Tm^2 delta_B = -2.505418e-03 T H_fin = 4.939612e+03 A/m 16:11:42 Measured H and B values: H = 4939.611847 A/m B = 0.007056 T 16:11:42 Hall Probe Field Measurement, B = 0.006270 T 16:11:42 Integrated Voltage Measurement... 16:11:44 Magnet current ramping to 0.2000 A... 16:12:00 Voltage Offset Correction: v_off_ini = 0.000005025 V, v_off_fin = 0.000004756 V 16:12:00 Integrated Voltage Measurement Imag = 0.2000 A VT = -0.000142557 Vs 16:12:00 Hall Probe Field Measurement, B = 0.003740 T 16:12:00 Calculate delta B and H from the cylinder Ifin = 0.200000 A B_hall_ini = 0.006270 T B_hall_fin = 0.003740 T VT = -1.425571e-04 V sec N_turns_coil = 180 delta_flux_1_turn = -7.919837e-07 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 = -4.681769e-08 Tm^2 delta_flux_gap = -5.464520e-08 Tm^2 delta_flux_sample = -6.905208e-07 Tm^2 delta_B = -2.592353e-03 T H_fin = 2.946435e+03 A/m 16:12:00 Measured H and B values: H = 2946.435137 A/m B = 0.004464 T 16:12:01 Hall Probe Field Measurement, B = 0.003720 T 16:12:01 Integrated Voltage Measurement... 16:12:02 Magnet current ramping to 0.0000 A... 16:12:18 Voltage Offset Correction: v_off_ini = 0.000004577 V, v_off_fin = 0.000004158 V 16:12:18 Integrated Voltage Measurement Imag = 0.0000 A VT = -0.000136908 Vs 16:12:19 Hall Probe Field Measurement, B = 0.001190 T 16:12:19 Calculate delta B and H from the cylinder Ifin = 0.000000 A B_hall_ini = 0.003720 T B_hall_fin = 0.001190 T VT = -1.369078e-04 V sec N_turns_coil = 180 delta_flux_1_turn = -7.605990e-07 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 = -4.681769e-08 Tm^2 delta_flux_gap = -5.464520e-08 Tm^2 delta_flux_sample = -6.591361e-07 Tm^2 delta_B = -2.474529e-03 T H_fin = 9.375021e+02 A/m 16:12:19 Measured H and B values: H = 937.502089 A/m B = 0.001989 T 16:12:19 Hall Probe Field Measurement, B = 0.001200 T 16:12:19 Integrated Voltage Measurement... 16:12:20 Magnet current ramping to -0.2000 A... 16:12:37 Voltage Offset Correction: v_off_ini = 0.000004188 V, v_off_fin = 0.000005115 V 16:12:37 Integrated Voltage Measurement Imag = -0.2000 A VT = -0.000140967 Vs 16:12:37 Hall Probe Field Measurement, B = -0.001330 T 16:12:37 Calculate delta B and H from the cylinder Ifin = -0.200000 A B_hall_ini = 0.001200 T B_hall_fin = -0.001330 T VT = -1.409670e-04 V sec N_turns_coil = 180 delta_flux_1_turn = -7.831500e-07 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 = -4.681769e-08 Tm^2 delta_flux_gap = -5.464520e-08 Tm^2 delta_flux_sample = -6.816871e-07 Tm^2 delta_B = -2.559189e-03 T H_fin = -1.047796e+03 A/m 16:12:37 Measured H and B values: H = -1047.796452 A/m B = -0.000570 T 16:12:38 Hall Probe Field Measurement, B = -0.001320 T 16:12:38 Integrated Voltage Measurement... 16:12:39 Magnet current ramping to -0.4000 A... 16:12:55 Voltage Offset Correction: v_off_ini = 0.000004367 V, v_off_fin = 0.000004038 V 16:12:55 Integrated Voltage Measurement Imag = -0.4000 A VT = -0.000135795 Vs 16:12:56 Hall Probe Field Measurement, B = -0.003860 T 16:12:56 Calculate delta B and H from the cylinder Ifin = -0.400000 A B_hall_ini = -0.001320 T B_hall_fin = -0.003860 T VT = -1.357950e-04 V sec N_turns_coil = 180 delta_flux_1_turn = -7.544165e-07 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 = -4.700274e-08 Tm^2 delta_flux_gap = -5.486119e-08 Tm^2 delta_flux_sample = -6.525526e-07 Tm^2 delta_B = -2.449813e-03 T H_fin = -3.040973e+03 A/m 16:12:56 Measured H and B values: H = -3040.973162 A/m B = -0.003020 T 16:12:56 Hall Probe Field Measurement, B = -0.003860 T 16:12:56 Integrated Voltage Measurement... 16:12:57 Magnet current ramping to -0.6000 A... 16:13:14 Voltage Offset Correction: v_off_ini = 0.000004457 V, v_off_fin = 0.000004278 V 16:13:14 Integrated Voltage Measurement Imag = -0.6000 A VT = -0.000136882 Vs 16:13:14 Hall Probe Field Measurement, B = -0.006400 T 16:13:14 Calculate delta B and H from the cylinder Ifin = -0.600000 A B_hall_ini = -0.003860 T B_hall_fin = -0.006400 T VT = -1.368822e-04 V sec N_turns_coil = 180 delta_flux_1_turn = -7.604567e-07 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 = -4.700274e-08 Tm^2 delta_flux_gap = -5.486119e-08 Tm^2 delta_flux_sample = -6.585928e-07 Tm^2 delta_B = -2.472489e-03 T H_fin = -5.042028e+03 A/m 16:13:14 Measured H and B values: H = -5042.028041 A/m B = -0.005492 T 16:13:15 Hall Probe Field Measurement, B = -0.006390 T 16:13:15 Integrated Voltage Measurement... 16:13:16 Magnet current ramping to -0.8000 A... 16:13:32 Voltage Offset Correction: v_off_ini = 0.000003978 V, v_off_fin = 0.000004816 V 16:13:32 Integrated Voltage Measurement Imag = -0.8000 A VT = -0.000139378 Vs 16:13:33 Hall Probe Field Measurement, B = -0.008960 T 16:13:33 Calculate delta B and H from the cylinder Ifin = -0.800000 A B_hall_ini = -0.006390 T B_hall_fin = -0.008960 T VT = -1.393778e-04 V sec N_turns_coil = 180 delta_flux_1_turn = -7.743214e-07 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 = -6.712543e-07 Tm^2 delta_B = -2.520023e-03 T H_fin = -7.058839e+03 A/m 16:13:33 Measured H and B values: H = -7058.839258 A/m B = -0.008012 T 16:13:33 Hall Probe Field Measurement, B = -0.008960 T 16:13:33 Integrated Voltage Measurement... 16:13:34 Magnet current ramping to -1.0000 A... 16:13:50 Voltage Offset Correction: v_off_ini = 0.000004158 V, v_off_fin = 0.000004367 V 16:13:50 Integrated Voltage Measurement Imag = -1.0000 A VT = -0.000134715 Vs 16:13:51 Hall Probe Field Measurement, B = -0.011480 T 16:13:51 Calculate delta B and H from the cylinder Ifin = -1.000000 A B_hall_ini = -0.008960 T B_hall_fin = -0.011480 T VT = -1.347153e-04 V sec N_turns_coil = 180 delta_flux_1_turn = -7.484185e-07 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 = -4.663264e-08 Tm^2 delta_flux_gap = -5.442921e-08 Tm^2 delta_flux_sample = -6.473567e-07 Tm^2 delta_B = -2.430306e-03 T H_fin = -9.044138e+03 A/m 16:13:51 Measured H and B values: H = -9044.137799 A/m B = -0.010443 T 16:13:51 Hall Probe Field Measurement, B = -0.011480 T 16:13:51 Integrated Voltage Measurement... 16:13:53 Magnet current ramping to -2.0000 A... 16:14:14 Voltage Offset Correction: v_off_ini = 0.000004011 V, v_off_fin = 0.000004640 V 16:14:14 Integrated Voltage Measurement Imag = -2.0000 A VT = -0.000693312 Vs 16:14:14 Hall Probe Field Measurement, B = -0.024200 T 16:14:14 Calculate delta B and H from the cylinder Ifin = -2.000000 A B_hall_ini = -0.011480 T B_hall_fin = -0.024200 T VT = -6.933122e-04 V sec N_turns_coil = 180 delta_flux_1_turn = -3.851735e-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 = -2.353838e-07 Tm^2 delta_flux_gap = -2.747379e-07 Tm^2 delta_flux_sample = -3.341613e-06 Tm^2 delta_B = -1.254508e-02 T H_fin = -1.906517e+04 A/m 16:14:14 Measured H and B values: H = -19065.168531 A/m B = -0.022988 T 16:14:15 Hall Probe Field Measurement, B = -0.024190 T 16:14:15 Integrated Voltage Measurement... 16:14:16 Magnet current ramping to -4.0000 A... 16:14:43 Voltage Offset Correction: v_off_ini = 0.000003684 V, v_off_fin = 0.000004043 V 16:14:43 Integrated Voltage Measurement Imag = -4.0000 A VT = -0.001366731 Vs 16:14:44 Hall Probe Field Measurement, B = -0.049360 T 16:14:44 Calculate delta B and H from the cylinder Ifin = -4.000000 A B_hall_ini = -0.024190 T B_hall_fin = -0.049360 T VT = -1.366731e-03 V sec N_turns_coil = 180 delta_flux_1_turn = -7.592949e-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 = -4.657713e-07 Tm^2 delta_flux_gap = -5.436442e-07 Tm^2 delta_flux_sample = -6.583534e-06 Tm^2 delta_B = -2.471590e-02 T H_fin = -3.888664e+04 A/m 16:14:44 Measured H and B values: H = -38886.641268 A/m B = -0.047704 T 16:14:44 Hall Probe Field Measurement, B = -0.049370 T 16:14:44 Integrated Voltage Measurement... 16:14:46 Magnet current ramping to -6.0000 A... 16:15:12 Voltage Offset Correction: v_off_ini = 0.000005182 V, v_off_fin = 0.000004193 V 16:15:12 Integrated Voltage Measurement Imag = -6.0000 A VT = -0.001353523 Vs 16:15:13 Hall Probe Field Measurement, B = -0.073960 T 16:15:13 Calculate delta B and H from the cylinder Ifin = -6.000000 A B_hall_ini = -0.049370 T B_hall_fin = -0.073960 T VT = -1.353523e-03 V sec N_turns_coil = 180 delta_flux_1_turn = -7.519573e-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 = -4.550384e-07 Tm^2 delta_flux_gap = -5.311168e-07 Tm^2 delta_flux_sample = -6.533418e-06 Tm^2 delta_B = -2.452775e-02 T H_fin = -5.826694e+04 A/m 16:15:13 Measured H and B values: H = -58266.936551 A/m B = -0.072231 T 16:15:13 Hall Probe Field Measurement, B = -0.073980 T 16:15:13 Integrated Voltage Measurement... 16:15:15 Magnet current ramping to -8.0000 A... 16:15:42 Voltage Offset Correction: v_off_ini = 0.000004193 V, v_off_fin = 0.000004972 V 16:15:42 Integrated Voltage Measurement Imag = -8.0000 A VT = -0.001294282 Vs 16:15:42 Hall Probe Field Measurement, B = -0.097520 T 16:15:42 Calculate delta B and H from the cylinder Ifin = -8.000000 A B_hall_ini = -0.073980 T B_hall_fin = -0.097520 T VT = -1.294282e-03 V sec N_turns_coil = 180 delta_flux_1_turn = -7.190454e-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 = -4.356081e-07 Tm^2 delta_flux_gap = -5.084380e-07 Tm^2 delta_flux_sample = -6.246408e-06 Tm^2 delta_B = -2.345026e-02 T H_fin = -7.682790e+04 A/m 16:15:42 Measured H and B values: H = -76827.902278 A/m B = -0.095682 T 16:15:43 Hall Probe Field Measurement, B = -0.097520 T 16:15:43 Integrated Voltage Measurement... 16:15:44 Magnet current ramping to -10.0000 A... 16:16:11 Voltage Offset Correction: v_off_ini = 0.000004732 V, v_off_fin = 0.000004433 V 16:16:11 Integrated Voltage Measurement Imag = -10.0000 A VT = -0.001080304 Vs 16:16:11 Hall Probe Field Measurement, B = -0.117200 T 16:16:12 Calculate delta B and H from the cylinder Ifin = -10.000000 A B_hall_ini = -0.097520 T B_hall_fin = -0.117200 T VT = -1.080304e-03 V sec N_turns_coil = 180 delta_flux_1_turn = -6.001687e-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 = -3.641787e-07 Tm^2 delta_flux_gap = -4.250662e-07 Tm^2 delta_flux_sample = -5.212442e-06 Tm^2 delta_B = -1.956855e-02 T H_fin = -9.233214e+04 A/m 16:16:12 Measured H and B values: H = -92332.138504 A/m B = -0.115250 T 16:16:12 Hall Probe Field Measurement, B = -0.117220 T 16:16:12 Integrated Voltage Measurement... 16:16:13 Magnet current ramping to -12.0000 A... 16:16:40 Voltage Offset Correction: v_off_ini = 0.000004373 V, v_off_fin = 0.000004642 V 16:16:40 Integrated Voltage Measurement Imag = -12.0000 A VT = -0.000675060 Vs 16:16:41 Hall Probe Field Measurement, B = -0.129540 T 16:16:41 Calculate delta B and H from the cylinder Ifin = -12.000000 A B_hall_ini = -0.117220 T B_hall_fin = -0.129540 T VT = -6.750597e-04 V sec N_turns_coil = 180 delta_flux_1_turn = -3.750332e-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 = -2.279818e-07 Tm^2 delta_flux_gap = -2.660984e-07 Tm^2 delta_flux_sample = -3.256252e-06 Tm^2 delta_B = -1.222462e-02 T H_fin = -1.020538e+05 A/m 16:16:41 Measured H and B values: H = -102053.798821 A/m B = -0.127475 T 16:16:41 Hall Probe Field Measurement, B = -0.129520 T 16:16:41 Integrated Voltage Measurement... 16:16:42 Magnet current ramping to -10.0000 A... 16:17:09 Voltage Offset Correction: v_off_ini = 0.000004732 V, v_off_fin = 0.000004283 V 16:17:10 Integrated Voltage Measurement Imag = -10.0000 A VT = 0.000569100 Vs 16:17:10 Hall Probe Field Measurement, B = -0.119190 T 16:17:10 Calculate delta B and H from the cylinder Ifin = -10.000000 A B_hall_ini = -0.129520 T B_hall_fin = -0.119190 T VT = 5.690999e-04 V sec N_turns_coil = 180 delta_flux_1_turn = 3.161666e-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 = 1.911568e-07 Tm^2 delta_flux_gap = 2.231166e-07 Tm^2 delta_flux_sample = 2.747393e-06 Tm^2 delta_B = 1.031426e-02 T H_fin = -9.389989e+04 A/m 16:17:10 Measured H and B values: H = -93899.894098 A/m B = -0.117161 T 16:17:11 Hall Probe Field Measurement, B = -0.119180 T 16:17:11 Integrated Voltage Measurement... 16:17:12 Magnet current ramping to -8.0000 A... 16:17:38 Voltage Offset Correction: v_off_ini = 0.000004642 V, v_off_fin = 0.000004792 V 16:17:38 Integrated Voltage Measurement Imag = -8.0000 A VT = 0.001026556 Vs 16:17:39 Hall Probe Field Measurement, B = -0.100380 T 16:17:39 Calculate delta B and H from the cylinder Ifin = -8.000000 A B_hall_ini = -0.119180 T B_hall_fin = -0.100380 T VT = 1.026556e-03 V sec N_turns_coil = 180 delta_flux_1_turn = 5.703088e-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 = 3.478943e-07 Tm^2 delta_flux_gap = 4.060592e-07 Tm^2 delta_flux_sample = 4.949135e-06 Tm^2 delta_B = 1.858004e-02 T H_fin = -7.908106e+04 A/m 16:17:39 Measured H and B values: H = -79081.058559 A/m B = -0.098581 T 16:17:40 Hall Probe Field Measurement, B = -0.100380 T 16:17:40 Integrated Voltage Measurement... 16:17:41 Magnet current ramping to -6.0000 A... 16:18:07 Voltage Offset Correction: v_off_ini = 0.000004612 V, v_off_fin = 0.000004283 V 16:18:07 Integrated Voltage Measurement Imag = -6.0000 A VT = 0.001291964 Vs 16:18:08 Hall Probe Field Measurement, B = -0.076800 T 16:18:08 Calculate delta B and H from the cylinder Ifin = -6.000000 A B_hall_ini = -0.100380 T B_hall_fin = -0.076800 T VT = 1.291964e-03 V sec N_turns_coil = 180 delta_flux_1_turn = 7.177577e-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 = 4.363483e-07 Tm^2 delta_flux_gap = 5.093019e-07 Tm^2 delta_flux_sample = 6.231926e-06 Tm^2 delta_B = 2.339589e-02 T H_fin = -6.050434e+04 A/m 16:18:08 Measured H and B values: H = -60504.336494 A/m B = -0.075185 T 16:18:09 Hall Probe Field Measurement, B = -0.076800 T 16:18:09 Integrated Voltage Measurement... 16:18:10 Magnet current ramping to -4.0000 A... 16:18:36 Voltage Offset Correction: v_off_ini = 0.000004732 V, v_off_fin = 0.000005212 V 16:18:36 Integrated Voltage Measurement Imag = -4.0000 A VT = 0.001339199 Vs 16:18:37 Hall Probe Field Measurement, B = -0.052160 T 16:18:37 Calculate delta B and H from the cylinder Ifin = -4.000000 A B_hall_ini = -0.076800 T B_hall_fin = -0.052160 T VT = 1.339199e-03 V sec N_turns_coil = 180 delta_flux_1_turn = 7.439992e-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 = 4.559636e-07 Tm^2 delta_flux_gap = 5.321967e-07 Tm^2 delta_flux_sample = 6.451832e-06 Tm^2 delta_B = 2.422146e-02 T H_fin = -4.109253e+04 A/m 16:18:37 Measured H and B values: H = -41092.528536 A/m B = -0.050963 T 16:18:37 Hall Probe Field Measurement, B = -0.052160 T 16:18:37 Integrated Voltage Measurement... 16:18:39 Magnet current ramping to -2.0000 A... 16:19:05 Voltage Offset Correction: v_off_ini = 0.000004193 V, v_off_fin = 0.000004103 V 16:19:05 Integrated Voltage Measurement Imag = -2.0000 A VT = 0.001389964 Vs 16:19:06 Hall Probe Field Measurement, B = -0.026870 T 16:19:06 Calculate delta B and H from the cylinder Ifin = -2.000000 A B_hall_ini = -0.052160 T B_hall_fin = -0.026870 T VT = 1.389964e-03 V sec N_turns_coil = 180 delta_flux_1_turn = 7.722020e-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 = 4.679919e-07 Tm^2 delta_flux_gap = 5.462360e-07 Tm^2 delta_flux_sample = 6.707792e-06 Tm^2 delta_B = 2.518239e-02 T H_fin = -2.116864e+04 A/m 16:19:06 Measured H and B values: H = -21168.639604 A/m B = -0.025781 T 16:19:07 Hall Probe Field Measurement, B = -0.026880 T 16:19:07 Integrated Voltage Measurement... 16:19:08 Magnet current ramping to -1.0000 A... 16:19:29 Voltage Offset Correction: v_off_ini = 0.000004251 V, v_off_fin = 0.000004550 V 16:19:29 Integrated Voltage Measurement Imag = -1.0000 A VT = 0.000694737 Vs 16:19:29 Hall Probe Field Measurement, B = -0.014160 T 16:19:29 Calculate delta B and H from the cylinder Ifin = -1.000000 A B_hall_ini = -0.026880 T B_hall_fin = -0.014160 T VT = 6.947366e-04 V sec N_turns_coil = 180 delta_flux_1_turn = 3.859648e-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 = 2.353838e-07 Tm^2 delta_flux_gap = 2.747379e-07 Tm^2 delta_flux_sample = 3.349526e-06 Tm^2 delta_B = 1.257479e-02 T H_fin = -1.115549e+04 A/m 16:19:29 Measured H and B values: H = -11155.487041 A/m B = -0.013206 T 16:19:30 Hall Probe Field Measurement, B = -0.014160 T 16:19:30 Integrated Voltage Measurement... 16:19:31 Magnet current ramping to -0.8000 A... 16:19:47 Voltage Offset Correction: v_off_ini = 0.000003949 V, v_off_fin = 0.000005055 V 16:19:47 Integrated Voltage Measurement Imag = -0.8000 A VT = 0.000135345 Vs 16:19:48 Hall Probe Field Measurement, B = -0.011640 T 16:19:48 Calculate delta B and H from the cylinder Ifin = -0.800000 A B_hall_ini = -0.014160 T B_hall_fin = -0.011640 T VT = 1.353447e-04 V sec N_turns_coil = 180 delta_flux_1_turn = 7.519151e-07 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 = 4.663264e-08 Tm^2 delta_flux_gap = 5.442921e-08 Tm^2 delta_flux_sample = 6.508533e-07 Tm^2 delta_B = 2.443433e-03 T H_fin = -9.170188e+03 A/m 16:19:48 Measured H and B values: H = -9170.188500 A/m B = -0.010763 T 16:19:48 Hall Probe Field Measurement, B = -0.011640 T 16:19:48 Integrated Voltage Measurement... 16:19:49 Magnet current ramping to -0.6000 A... 16:20:06 Voltage Offset Correction: v_off_ini = 0.000004188 V, v_off_fin = 0.000005025 V 16:20:06 Integrated Voltage Measurement Imag = -0.6000 A VT = 0.000136934 Vs 16:20:06 Hall Probe Field Measurement, B = -0.009070 T 16:20:06 Calculate delta B and H from the cylinder Ifin = -0.600000 A B_hall_ini = -0.011640 T B_hall_fin = -0.009070 T VT = 1.369337e-04 V sec N_turns_coil = 180 delta_flux_1_turn = 7.607425e-07 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 = 6.576755e-07 Tm^2 delta_B = 2.469045e-03 T H_fin = -7.145499e+03 A/m 16:20:06 Measured H and B values: H = -7145.499115 A/m B = -0.008294 T 16:20:07 Hall Probe Field Measurement, B = -0.009070 T 16:20:07 Integrated Voltage Measurement... 16:20:08 Magnet current ramping to -0.4000 A... 16:20:24 Voltage Offset Correction: v_off_ini = 0.000004726 V, v_off_fin = 0.000004995 V 16:20:24 Integrated Voltage Measurement Imag = -0.4000 A VT = 0.000133198 Vs 16:20:24 Hall Probe Field Measurement, B = -0.006540 T 16:20:24 Calculate delta B and H from the cylinder Ifin = -0.400000 A B_hall_ini = -0.009070 T B_hall_fin = -0.006540 T VT = 1.331981e-04 V sec N_turns_coil = 180 delta_flux_1_turn = 7.399893e-07 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 = 4.681769e-08 Tm^2 delta_flux_gap = 5.464520e-08 Tm^2 delta_flux_sample = 6.385264e-07 Tm^2 delta_B = 2.397155e-03 T H_fin = -5.152322e+03 A/m 16:20:25 Measured H and B values: H = -5152.322405 A/m B = -0.005896 T 16:20:25 Hall Probe Field Measurement, B = -0.006540 T 16:20:25 Integrated Voltage Measurement... 16:20:26 Magnet current ramping to -0.2000 A... 16:20:42 Voltage Offset Correction: v_off_ini = 0.000004666 V, v_off_fin = 0.000004637 V 16:20:42 Integrated Voltage Measurement Imag = -0.2000 A VT = 0.000135195 Vs 16:20:43 Hall Probe Field Measurement, B = -0.004000 T 16:20:43 Calculate delta B and H from the cylinder Ifin = -0.200000 A B_hall_ini = -0.006540 T B_hall_fin = -0.004000 T VT = 1.351945e-04 V sec N_turns_coil = 180 delta_flux_1_turn = 7.510808e-07 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 = 4.700274e-08 Tm^2 delta_flux_gap = 5.486119e-08 Tm^2 delta_flux_sample = 6.492169e-07 Tm^2 delta_B = 2.437290e-03 T H_fin = -3.151268e+03 A/m 16:20:43 Measured H and B values: H = -3151.267526 A/m B = -0.003459 T 16:20:43 Hall Probe Field Measurement, B = -0.004000 T 16:20:43 Integrated Voltage Measurement... 16:20:45 Magnet current ramping to 0.0000 A... 16:21:01 Voltage Offset Correction: v_off_ini = 0.000004307 V, v_off_fin = 0.000004756 V 16:21:01 Integrated Voltage Measurement Imag = 0.0000 A VT = 0.000137737 Vs 16:21:01 Hall Probe Field Measurement, B = -0.001450 T 16:21:01 Calculate delta B and H from the cylinder Ifin = 0.000000 A B_hall_ini = -0.004000 T B_hall_fin = -0.001450 T VT = 1.377368e-04 V sec N_turns_coil = 180 delta_flux_1_turn = 7.652043e-07 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 = 4.718779e-08 Tm^2 delta_flux_gap = 5.507718e-08 Tm^2 delta_flux_sample = 6.629394e-07 Tm^2 delta_B = 2.488807e-03 T H_fin = -1.142334e+03 A/m 16:21:01 Measured H and B values: H = -1142.334478 A/m B = -0.000970 T 16:21:01 Summary of measured B and H values: i H B (A/m) (T) --- ---------- ---------- 0 -1165.97 -0.000055 1 819.33 0.002520 2 2812.51 0.004996 3 4813.56 0.007523 4 6838.25 0.010123 5 8815.67 0.012697 6 18813.07 0.025297 7 38634.54 0.049989 8 57991.20 0.074226 9 76560.04 0.097601 10 92119.43 0.117099 11 101880.48 0.129347 12 93687.18 0.118943 13 78805.32 0.100246 14 60236.48 0.076837 15 40840.43 0.052243 16 20932.29 0.027115 17 10927.02 0.014481 18 8949.60 0.012111 19 6932.79 0.009561 20 4939.61 0.007056 21 2946.44 0.004464 22 937.50 0.001989 23 -1047.80 -0.000570 24 -3040.97 -0.003020 25 -5042.03 -0.005492 26 -7058.84 -0.008012 27 -9044.14 -0.010443 28 -19065.17 -0.022988 29 -38886.64 -0.047704 30 -58266.94 -0.072231 31 -76827.90 -0.095682 32 -92332.14 -0.115250 33 -102053.80 -0.127475 34 -93899.89 -0.117161 35 -79081.06 -0.098581 36 -60504.34 -0.075185 37 -41092.53 -0.050963 38 -21168.64 -0.025781 39 -11155.49 -0.013206 40 -9170.19 -0.010763 41 -7145.50 -0.008294 42 -5152.32 -0.005896 43 -3151.27 -0.003459 44 -1142.33 -0.000970 16:21:02 Symmetrized B and H values: i H B (A/m) (T) --- ---------- ---------- 0 -1165.97 -0.000991 1 819.33 0.001584 2 2812.51 0.004060 3 4813.56 0.006587 4 6838.25 0.009187 5 8815.67 0.011761 6 18813.07 0.024361 7 38634.54 0.049053 8 57991.20 0.073290 9 76560.04 0.096665 10 92119.43 0.116163 11 101880.48 0.128411 12 93687.18 0.118007 13 78805.32 0.099310 14 60236.48 0.075901 15 40840.43 0.051306 16 20932.29 0.026179 17 10927.02 0.013545 18 8949.60 0.011175 19 6932.79 0.008625 20 4939.61 0.006120 21 2946.44 0.003527 22 937.50 0.001053 23 -1047.80 -0.001506 24 -3040.97 -0.003956 25 -5042.03 -0.006429 26 -7058.84 -0.008949 27 -9044.14 -0.011379 28 -19065.17 -0.023924 29 -38886.64 -0.048640 30 -58266.94 -0.073168 31 -76827.90 -0.096618 32 -92332.14 -0.116186 33 -102053.80 -0.128411 34 -93899.89 -0.118097 35 -79081.06 -0.099517 36 -60504.34 -0.076121 37 -41092.53 -0.051899 38 -21168.64 -0.026717 39 -11155.49 -0.014142 40 -9170.19 -0.011699 41 -7145.50 -0.009230 42 -5152.32 -0.006833 43 -3151.27 -0.004395 44 -1142.33 -0.001906 16:21:02 Magnet current ramping to 0.0000 A...