SLAC Magnetic Measurements Date: 11-14-2001 Time: 14:10:39 Project: nlc Magnet Type: PMblock Magnet Name: calib Serial Number: Run Number: 4 Measurement Device: Helmholtz coil Operator: zw Comment: Check calibration before measuring PM blocks 14:10:43 Initial Zero Current Measurement, Imag_zero = 0.0000 A 14:10:43 Temperature Measurement Device(s) Being Used, type = YSI44036_HP3457 14:11:00 Begin Helmholtz Coil Measurement Helmholtz coil measurement: 14:11:30 VT Harmonics Measurement rot_dir = +, num_rev = 8 i vthar_re[i] vthar_im[i] vthar_mag[i] vthar_ph[i] (Vs) (Vs) (Vs) (deg) --- ------------ ------------ ------------ ------------ 1 0.0037426 -0.0000741 0.0037434 -1.1336148 2 0.0000026 -0.0000013 0.0000030 -26.9635016 3 0.0000001 -0.0000014 0.0000014 -87.6711439 4 -0.0000249 -0.0000298 0.0000388 -129.8430082 5 0.0000017 0.0000026 0.0000032 56.5639554 6 0.0000007 0.0000015 0.0000017 64.4399967 7 0.0000014 -0.0000042 0.0000044 -71.7452213 8 0.0000019 0.0000025 0.0000032 52.4272398 9 0.0000014 0.0000052 0.0000054 75.2701064 10 0.0000013 0.0000002 0.0000014 9.5744938 14:11:46 VT Harmonics Measurement rot_dir = -, num_rev = 8 i vthar_re[i] vthar_im[i] vthar_mag[i] vthar_ph[i] (Vs) (Vs) (Vs) (deg) --- ------------ ------------ ------------ ------------ 1 0.0037412 0.0000588 0.0037417 0.9006698 2 -0.0000039 0.0000046 0.0000061 130.3234467 3 0.0000024 -0.0000011 0.0000026 -25.5852368 4 -0.0000361 -0.0000104 0.0000376 -163.9348245 5 -0.0000051 0.0000089 0.0000103 119.7775190 6 0.0000001 0.0000019 0.0000019 87.6565009 7 0.0000002 0.0000072 0.0000072 88.7288267 8 0.0000034 -0.0000006 0.0000035 -9.5190273 9 -0.0000016 -0.0000035 0.0000038 -114.7649581 10 -0.0000013 0.0000014 0.0000019 133.9742905 14:12:02 VT Harmonics Measurement rot_dir = +, num_rev = 8 i vthar_re[i] vthar_im[i] vthar_mag[i] vthar_ph[i] (Vs) (Vs) (Vs) (deg) --- ------------ ------------ ------------ ------------ 1 0.0037434 -0.0000740 0.0037441 -1.1317192 2 0.0000036 -0.0000018 0.0000040 -26.3792845 3 0.0000018 -0.0000013 0.0000022 -36.5352257 4 0.0000191 -0.0000300 0.0000356 -57.5081336 5 -0.0000006 0.0000019 0.0000020 108.7998252 6 0.0000001 0.0000006 0.0000007 78.0649198 7 0.0000015 -0.0000039 0.0000042 -68.6242884 8 -0.0000001 0.0000036 0.0000036 91.9967491 9 0.0000008 0.0000052 0.0000052 81.0541714 10 0.0000007 0.0000001 0.0000007 9.8765183 14:12:18 VT Harmonics Measurement rot_dir = -, num_rev = 8 i vthar_re[i] vthar_im[i] vthar_mag[i] vthar_ph[i] (Vs) (Vs) (Vs) (deg) --- ------------ ------------ ------------ ------------ 1 0.0037426 0.0000424 0.0037428 0.6489869 2 -0.0000031 -0.0000028 0.0000042 -138.0430786 3 0.0000045 -0.0000048 0.0000066 -47.1135240 4 -0.0000237 0.0000289 0.0000374 129.3276699 5 -0.0000035 0.0000031 0.0000047 138.6704348 6 0.0000007 -0.0000023 0.0000024 -72.7038214 7 0.0000016 0.0000034 0.0000038 65.7190044 8 -0.0000002 -0.0000061 0.0000061 -91.5221977 9 0.0000005 -0.0000060 0.0000060 -85.6462534 10 0.0000016 -0.0000011 0.0000020 -34.8375787 14:12:18 Integrated Voltage Harmonics, Average and RMS of Measurements n vthar_re[i] svthar_re[i] vthar_im[i] svthar_im[i] (Vs) (Vs) (Vs) (Vs) --- ------------ ------------ ------------ ------------ 1 0.0037425 0.0000005 -0.0000117 0.0000041 2 -0.0000002 0.0000005 -0.0000003 0.0000020 3 0.0000022 0.0000010 -0.0000022 0.0000009 4 -0.0000164 0.0000141 -0.0000103 0.0000098 5 -0.0000019 0.0000002 0.0000041 0.0000016 6 0.0000004 0.0000000 0.0000004 0.0000013 7 0.0000012 0.0000004 0.0000007 0.0000009 8 0.0000013 0.0000014 -0.0000001 0.0000011 9 0.0000003 0.0000004 0.0000002 0.0000006 10 0.0000006 0.0000006 0.0000002 0.0000007 14:12:18 Magnetic Moment Calculation Helmholtz Coil Radius, R = 0.493357 m Helmholtz Coil Number Of Turns, N = 3045 Geometry Factor, G = 1.397540 m vthar_re_ave = 3.742457e-03 Vs vthar_im_ave = -1.169990e-05 Vs mm_re_ave = 8.474130e-07 Tm^3 mm_im_ave = -2.649235e-09 Tm^3 14:12:18 Magnetic Moment Measurement M = 8.474171e-07 +- 1.232601e-10 Tm^3 Theta = 0.179121 +- 0.062433 deg 14:12:21 Temperature Measurement, Probe Number = 0, T = 21.031686 C 14:12:23 Temperature Measurement, Probe Number = 1, T = 20.711356 C 14:12:25 Magnet Current, Imag = 6.0046 A Vtrans = 1.501147 V, Factor V/A = 0.250000 V/A, Zero Current = 0.000000 A 14:12:26 Magnet Current, Imag = 6.0046 A Vtrans = 1.501145 V, Factor V/A = 0.250000 V/A, Zero Current = 0.000000 A 14:12:28 Magnet Current, Imag = 6.0046 A Vtrans = 1.501143 V, Factor V/A = 0.250000 V/A, Zero Current = 0.000000 A 14:12:29 Magnet Current, Imag = 6.0046 A Vtrans = 1.501146 V, Factor V/A = 0.250000 V/A, Zero Current = 0.000000 A 14:12:29 Magnet Current Measurement: Imag = 6.0046 +- 0.0000 A 14:12:29 Calibration Coil Magnetic Moment Measurement Coil current, I = 6.004581 A Coil area, A = 0.111860 m^2 Magnetic Moment, M = 8.440484e-07 Tm^3