SLAC Magnetic Measurements Date: 11-10-2025 Time: 11:27:43 Project: FACET-II Magnet Type: Dipole Magnet Name: 4595 Serial Number: 30822-4 Run Number: 5 Measurement Device: 1wire Operator: sda Comment: Degauss Currents f = 0.87 totals point = 49 Imax = 14.5 Test Currents for MAIN (A): 14.50 -12.62 10.98 -9.55 8.31 -7.23 6.29 -5.47 4.76 -4.14 3.60 -3.13 2.73 -2.37 2.06 -1.80 1.56 -1.36 1.18 -1.03 0.89 -0.78 0.68 -0.59 0.51 -0.45 0.39 -0.34 0.29 -0.26 0.22 -0.19 0.17 -0.15 0.13 -0.11 0.10 -0.08 0.07 -0.06 0.06 -0.05 0.04 -0.04 0.03 -0.03 0.02 -0.02 0.00 0.00 11:28:08 Position moved: 0.000000 m 11:28:13 Magnet Current for MAIN, Imag = 0.0012 A Vtrans = 0.000100 V, Factor V/A = 0.083333 V/A, Zero Current = 0.000000 A 11:28:14 Magnet Current for MAIN, Imag = 0.0013 A Vtrans = 0.000112 V, Factor V/A = 0.083333 V/A, Zero Current = 0.000000 A 11:28:15 Magnet Current for MAIN, Imag = 0.0006 A Vtrans = 0.000050 V, Factor V/A = 0.083333 V/A, Zero Current = 0.000000 A 11:28:16 Magnet Current for MAIN, Imag = 0.0016 A Vtrans = 0.000137 V, Factor V/A = 0.083333 V/A, Zero Current = 0.000000 A 11:28:16 Magnet Avgerage Current Measurement for MAIN : Imag = 0.0012 +- 0.0004 A 11:30:14 Initial Zero Current Measurement for MAIN, Imag_zero = 0.001197 A 11:30:14 Ambient Measurement Device(s) Being Used, type = None 11:30:15 Magnet Voltage Measurement Device(s) Being Used, type = HP34970 11:30:15 Temperature Measurement Device(s) Being Used, type = HPTHERM_HP34970 11:30:15 Ambient Measurement Device(s) Being Used, type = None 11:30:18 Position moved: 0.000000 m 11:30:21 Magnet system MAIN current ramping to 14.5000 A... 11:30:31 Magnet system MAIN current ramping to -12.6150 A... 11:30:48 Magnet system MAIN current ramping to 10.9750 A... 11:31:03 Magnet system MAIN current ramping to -9.5483 A... 11:31:17 Magnet system MAIN current ramping to 8.3070 A... 11:31:29 Magnet system MAIN current ramping to -7.2271 A... 11:31:41 Magnet system MAIN current ramping to 6.2876 A... 11:31:51 Magnet system MAIN current ramping to -5.4702 A... 11:32:00 Magnet system MAIN current ramping to 4.7591 A... 11:32:09 Magnet system MAIN current ramping to -4.1404 A... 11:32:16 Magnet system MAIN current ramping to 3.6021 A... 11:32:24 Magnet system MAIN current ramping to -3.1339 A... 11:32:31 Magnet system MAIN current ramping to 2.7265 A... 11:32:37 Magnet system MAIN current ramping to -2.3720 A... 11:32:43 Magnet system MAIN current ramping to 2.0637 A... 11:32:49 Magnet system MAIN current ramping to -1.7954 A... 11:32:54 Magnet system MAIN current ramping to 1.5620 A... 11:32:59 Magnet system MAIN current ramping to -1.3589 A... 11:33:04 Magnet system MAIN current ramping to 1.1823 A... 11:33:09 Magnet system MAIN current ramping to -1.0286 A... 11:33:13 Magnet system MAIN current ramping to 0.8949 A... 11:33:18 Magnet system MAIN current ramping to -0.7785 A... 11:33:22 Magnet system MAIN current ramping to 0.6773 A... 11:33:26 Magnet system MAIN current ramping to -0.5893 A... 11:33:30 Magnet system MAIN current ramping to 0.5127 A... 11:33:34 Magnet system MAIN current ramping to -0.4460 A... 11:33:38 Magnet system MAIN current ramping to 0.3880 A... 11:33:42 Magnet system MAIN current ramping to -0.3376 A... 11:33:46 Magnet system MAIN current ramping to 0.2937 A... 11:33:49 Magnet system MAIN current ramping to -0.2555 A... 11:33:53 Magnet system MAIN current ramping to 0.2223 A... 11:33:57 Magnet system MAIN current ramping to -0.1934 A... 11:34:00 Magnet system MAIN current ramping to 0.1683 A... 11:34:04 Magnet system MAIN current ramping to -0.1464 A... 11:34:08 Magnet system MAIN current ramping to 0.1274 A... 11:34:11 Magnet system MAIN current ramping to -0.1108 A... 11:34:15 Magnet system MAIN current ramping to 0.0964 A... 11:34:18 Magnet system MAIN current ramping to -0.0839 A... 11:34:22 Magnet system MAIN current ramping to 0.0730 A... 11:34:25 Magnet system MAIN current ramping to -0.0635 A... 11:34:29 Magnet system MAIN current ramping to 0.0552 A... 11:34:32 Magnet system MAIN current ramping to -0.0481 A... 11:34:36 Magnet system MAIN current ramping to 0.0418 A... 11:34:39 Magnet system MAIN current ramping to -0.0364 A... 11:34:43 Magnet system MAIN current ramping to 0.0316 A... 11:34:46 Magnet system MAIN current ramping to -0.0275 A... 11:34:50 Magnet system MAIN current ramping to 0.0239 A... 11:34:53 Magnet system MAIN current ramping to -0.0208 A... 11:34:57 Magnet system MAIN current ramping to 0.0000 A... 11:35:00 Magnet system MAIN current ramping to 0.0000 A... 11:37:12 Magnet Current for MAIN, Imag = -0.0006 A Vtrans = 0.000050 V, Factor V/A = 0.083333 V/A, Zero Current = 0.001197 A 11:37:13 Main (V) Voltage Measurement, V = -0.000037 V 11:37:20 Temperature Measurement, Probe Number = 0, T = 22.382000 C 11:37:21 Temperature Measurement, Probe Number = 1, T = 22.247000 C 11:37:21 Temperature Measurement, Probe Number = 2, T = 22.042000 C 11:37:22 Temperature Measurement, Probe Number = 3, T = 22.590000 C 11:37:22 Magnet Test Parameter Measurements P0 = MAIN, Value = -0.00 P1 = Main (V), Value = -0.00 P2 = Coil_Top_Inside, Value = 22.38 P3 = Coil_Top_Outside, Value = 22.25 P4 = Core, Value = 22.04 P5 = Ambient, Value = 22.59 11:37:22 Magnetic Field Measurement Measuring the magnet strength... 11:37:22 Integrated Voltage Measurement... 11:37:23 Magnet Current for MAIN, Imag = 0.0006 A Vtrans = 0.000149 V, Factor V/A = 0.083333 V/A, Zero Current = 0.001197 A 11:37:33 Integrated Voltage Measurement X0 = 0.0000000 m, Delta X = 0.0100000 m VT = -0.000005098 Vs 11:37:41 Integrated Voltage Measurement X0 = 0.0000000 m, Delta X = -0.0100000 m VT = -0.000004897 Vs 11:37:43 Magnet Current for MAIN, Imag = 0.0007 A Vtrans = 0.000162 V, Factor V/A = 0.083333 V/A, Zero Current = 0.001197 A 11:37:51 Integrated Voltage Measurement X0 = 0.0000000 m, Delta X = 0.0100000 m VT = -0.000004194 Vs 11:38:00 Integrated Voltage Measurement X0 = 0.0000000 m, Delta X = -0.0100000 m VT = -0.000004962 Vs 11:38:01 Magnet Current for MAIN, Imag = 0.0001 A Vtrans = 0.000112 V, Factor V/A = 0.083333 V/A, Zero Current = 0.001197 A 11:38:09 Integrated Voltage Measurement X0 = 0.0000000 m, Delta X = 0.0100000 m VT = -0.000004580 Vs 11:38:18 Integrated Voltage Measurement X0 = 0.0000000 m, Delta X = -0.0100000 m VT = -0.000004576 Vs 11:38:19 Magnet Current for MAIN, Imag = 0.0009 A Vtrans = 0.000174 V, Factor V/A = 0.083333 V/A, Zero Current = 0.001197 A 11:38:27 Integrated Voltage Measurement X0 = 0.0000000 m, Delta X = 0.0100000 m VT = -0.000004131 Vs 11:38:36 Integrated Voltage Measurement X0 = 0.0000000 m, Delta X = -0.0100000 m VT = -0.000004871 Vs 11:38:36 Integrated Voltage Average and RMS of Measurements X0 = 0.0000000 m, Delta X = 0.0100000 m VT = 0.000000163 +- 0.000000217 Vs 11:38:36 Integrated Field Strength, Average and RMS of Measurements X0 = 0.0000000 m, dx = 0.0100000 m, Nturns = 1.0 VT = 0.000000163 +- 0.000000217 Vs BL = 0.00001630 +- 0.00002169 Tm 11:38:40 Position moved: 0.000000 m 11:38:40 BL vs X Fit Coefficients: Cn sigCn n (Tm/m^n) ----- --------+-------- 0 0.00002 0.00002 Compute Fit Residuals: X0 BL sigBL BLfit BL-BLfit (m) (Tm) (Tm) (Tm) (Tm) ----------- --------+-------- -------- -------- 0.0000000 0.00002 0.00002 0.00002 0.00000 11:38:40 Magnet Strength Calculation Harmonic Number = 1 Number Of X0 Positions = 1 X0 BL sigBL (m) (Tm) (Tm) -------- --------+-------- 0.0000 0.00002 0.00002 SL = 0.0000163 +- 0.0000217 Tm^2/m^n 11:38:40 Magnet Strength Measurement Harmonic Number = 1 SL = 0.0000163 +- 0.0000217 Tm^2/m^n 11:38:43 Position moved: 0.000000 m 11:38:45 Position moved: 0.000000 m 11:38:48 Magnet system MAIN current ramping to 0.0000 A...