SLAC Magnetic Measurements Date: 11-10-2025 Time: 14:59:43 Project: FACET-II Magnet Type: Dipole Magnet Name: 4595 Serial Number: 30822-4 Run Number: 13 Measurement Device: 1wire Operator: sda Comment: Degauss Currents f = 0.85 totals point = 49 Imax = 14.5. No offset correction, like run 5-11 Test Currents for MAIN (A): 14.50 -12.32 10.48 -8.90 7.57 -6.43 5.47 -4.65 3.95 -3.36 2.85 -2.43 2.06 -1.75 1.49 -1.27 1.08 -0.92 0.78 -0.66 0.56 -0.48 0.41 -0.35 0.29 -0.25 0.21 -0.18 0.15 -0.13 0.11 -0.09 0.08 -0.07 0.06 -0.05 0.04 -0.04 0.03 -0.03 0.02 -0.02 0.02 -0.01 0.01 -0.01 0.01 -0.01 0.00 15:00:08 Position moved: 0.000000 m 15:00:11 Magnet Current for MAIN, Imag = 0.0006 A Vtrans = 0.000050 V, Factor V/A = 0.083333 V/A, Zero Current = 0.000000 A 15:00:12 Magnet Current for MAIN, Imag = 0.0013 A Vtrans = 0.000112 V, Factor V/A = 0.083333 V/A, Zero Current = 0.000000 A 15:00:13 Magnet Current for MAIN, Imag = 0.0021 A Vtrans = 0.000174 V, Factor V/A = 0.083333 V/A, Zero Current = 0.000000 A 15:00:14 Magnet Current for MAIN, Imag = 0.0015 A Vtrans = 0.000124 V, Factor V/A = 0.083333 V/A, Zero Current = 0.000000 A 15:00:14 Magnet Avgerage Current Measurement for MAIN : Imag = 0.0014 +- 0.0005 A 15:00:31 Initial Zero Current Measurement for MAIN, Imag_zero = 0.00138 A 15:00:31 Ambient Measurement Device(s) Being Used, type = None 15:00:31 Magnet Voltage Measurement Device(s) Being Used, type = HP34970 15:00:32 Temperature Measurement Device(s) Being Used, type = HPTHERM_HP34970 15:00:32 Ambient Measurement Device(s) Being Used, type = None 15:00:35 Position moved: 0.000000 m 15:00:37 Magnet system MAIN current ramping to 14.5000 A... 15:00:48 Magnet system MAIN current ramping to -12.3250 A... 15:01:05 Magnet system MAIN current ramping to 10.4763 A... 15:01:20 Magnet system MAIN current ramping to -8.9048 A... 15:01:33 Magnet system MAIN current ramping to 7.5691 A... 15:01:44 Magnet system MAIN current ramping to -6.4337 A... 15:01:55 Magnet system MAIN current ramping to 5.4687 A... 15:02:04 Magnet system MAIN current ramping to -4.6484 A... 15:02:13 Magnet system MAIN current ramping to 3.9511 A... 15:02:21 Magnet system MAIN current ramping to -3.3584 A... 15:02:28 Magnet system MAIN current ramping to 2.8547 A... 15:02:34 Magnet system MAIN current ramping to -2.4265 A... 15:02:40 Magnet system MAIN current ramping to 2.0625 A... 15:02:46 Magnet system MAIN current ramping to -1.7531 A... 15:02:51 Magnet system MAIN current ramping to 1.4902 A... 15:02:56 Magnet system MAIN current ramping to -1.2666 A... 15:03:01 Magnet system MAIN current ramping to 1.0766 A... 15:03:06 Magnet system MAIN current ramping to -0.9151 A... 15:03:10 Magnet system MAIN current ramping to 0.7779 A... 15:03:14 Magnet system MAIN current ramping to -0.6612 A... 15:03:19 Magnet system MAIN current ramping to 0.5620 A... 15:03:23 Magnet system MAIN current ramping to -0.4777 A... 15:03:27 Magnet system MAIN current ramping to 0.4061 A... 15:03:31 Magnet system MAIN current ramping to -0.3452 A... 15:03:34 Magnet system MAIN current ramping to 0.2934 A... 15:03:38 Magnet system MAIN current ramping to -0.2494 A... 15:03:42 Magnet system MAIN current ramping to 0.2120 A... 15:03:46 Magnet system MAIN current ramping to -0.1802 A... 15:03:49 Magnet system MAIN current ramping to 0.1531 A... 15:03:53 Magnet system MAIN current ramping to -0.1302 A... 15:03:56 Magnet system MAIN current ramping to 0.1106 A... 15:04:00 Magnet system MAIN current ramping to -0.0940 A... 15:04:03 Magnet system MAIN current ramping to 0.0799 A... 15:04:07 Magnet system MAIN current ramping to -0.0679 A... 15:04:10 Magnet system MAIN current ramping to 0.0578 A... 15:04:14 Magnet system MAIN current ramping to -0.0491 A... 15:04:17 Magnet system MAIN current ramping to 0.0417 A... 15:04:21 Magnet system MAIN current ramping to -0.0355 A... 15:04:24 Magnet system MAIN current ramping to 0.0301 A... 15:04:28 Magnet system MAIN current ramping to -0.0256 A... 15:04:31 Magnet system MAIN current ramping to 0.0218 A... 15:04:35 Magnet system MAIN current ramping to -0.0185 A... 15:04:38 Magnet system MAIN current ramping to 0.0157 A... 15:04:42 Magnet system MAIN current ramping to -0.0134 A... 15:04:45 Magnet system MAIN current ramping to 0.0114 A... 15:04:49 Magnet system MAIN current ramping to -0.0097 A... 15:04:52 Magnet system MAIN current ramping to 0.0082 A... 15:04:56 Magnet system MAIN current ramping to -0.0070 A... 15:04:59 Magnet system MAIN current ramping to 0.0000 A... 15:06:38 Magnet Current for MAIN, Imag = 0.0003 A Vtrans = 0.000137 V, Factor V/A = 0.083333 V/A, Zero Current = 0.001380 A 15:06:39 Main (V) Voltage Measurement, V = 0.000025 V 15:06:46 Temperature Measurement, Probe Number = 0, T = 25.322000 C 15:06:47 Temperature Measurement, Probe Number = 1, T = 24.748000 C 15:06:48 Temperature Measurement, Probe Number = 2, T = 24.534000 C 15:06:49 Temperature Measurement, Probe Number = 3, T = 24.983000 C 15:06:49 Magnet Test Parameter Measurements P0 = MAIN, Value = 0.00 P1 = Main (V), Value = 0.00 P2 = Coil_Top_Inside, Value = 25.32 P3 = Coil_Top_Outside, Value = 24.75 P4 = Core, Value = 24.53 P5 = Ambient, Value = 24.98 15:06:49 Magnetic Field Measurement Measuring the magnet strength... 15:06:49 Integrated Voltage Measurement... 15:06:50 Magnet Current for MAIN, Imag = 0.0003 A Vtrans = 0.000137 V, Factor V/A = 0.083333 V/A, Zero Current = 0.001380 A 15:07:00 Integrated Voltage Measurement X0 = 0.0000000 m, Delta X = 0.0100000 m VT = -0.000005528 Vs 15:07:09 Integrated Voltage Measurement X0 = 0.0000000 m, Delta X = -0.0100000 m VT = -0.000006388 Vs 15:07:10 Magnet Current for MAIN, Imag = 0.0010 A Vtrans = 0.000199 V, Factor V/A = 0.083333 V/A, Zero Current = 0.001380 A 15:07:19 Integrated Voltage Measurement X0 = 0.0000000 m, Delta X = 0.0100000 m VT = -0.000005840 Vs 15:07:28 Integrated Voltage Measurement X0 = 0.0000000 m, Delta X = -0.0100000 m VT = -0.000005829 Vs 15:07:29 Magnet Current for MAIN, Imag = -0.0002 A Vtrans = 0.000100 V, Factor V/A = 0.083333 V/A, Zero Current = 0.001380 A 15:07:38 Integrated Voltage Measurement X0 = 0.0000000 m, Delta X = 0.0100000 m VT = -0.000005823 Vs 15:07:47 Integrated Voltage Measurement X0 = 0.0000000 m, Delta X = -0.0100000 m VT = -0.000006259 Vs 15:07:48 Magnet Current for MAIN, Imag = -0.0000 A Vtrans = 0.000112 V, Factor V/A = 0.083333 V/A, Zero Current = 0.001380 A 15:07:57 Integrated Voltage Measurement X0 = 0.0000000 m, Delta X = 0.0100000 m VT = -0.000006355 Vs 15:08:06 Integrated Voltage Measurement X0 = 0.0000000 m, Delta X = -0.0100000 m VT = -0.000006000 Vs 15:08:06 Integrated Voltage Average and RMS of Measurements X0 = 0.0000000 m, Delta X = 0.0100000 m VT = 0.000000116 +- 0.000000229 Vs 15:08:06 Integrated Field Strength, Average and RMS of Measurements X0 = 0.0000000 m, dx = 0.0100000 m, Nturns = 1.0 VT = 0.000000116 +- 0.000000229 Vs BL = 0.00001163 +- 0.00002292 Tm 15:08:10 Position moved: 0.000000 m 15:08:10 BL vs X Fit Coefficients: Cn sigCn n (Tm/m^n) ----- --------+-------- 0 0.00001 0.00002 Compute Fit Residuals: X0 BL sigBL BLfit BL-BLfit (m) (Tm) (Tm) (Tm) (Tm) ----------- --------+-------- -------- -------- 0.0000000 0.00001 0.00002 0.00001 0.00000 15:08:10 Magnet Strength Calculation Harmonic Number = 1 Number Of X0 Positions = 1 X0 BL sigBL (m) (Tm) (Tm) -------- --------+-------- 0.0000 0.00001 0.00002 SL = 0.0000116 +- 0.0000229 Tm^2/m^n 15:08:10 Magnet Strength Measurement Harmonic Number = 1 SL = 0.0000116 +- 0.0000229 Tm^2/m^n 15:08:12 Position moved: 0.000000 m