SLAC Magnetic Measurements Date: 11-27-2007 Time: 14:05:31 Planar Insertion Device Shim Analysis ------------------------------------- Data File Header: SLAC Magnetic Measurements Date: 11-27-2007 Time: 13:58:48 Project: LCLS Device Type: Undulator Data Type: Serial Number: L143-112000-09 DATASET Number: 1 Tuning Stage: Rough Tuning Run Number: 4 Measurement Type: Z Scans Operator: aww Comment: x=0.026508 ; y=0.0002836 After adding 1-screw x-shims at 126, 161. Measurement Device x: Measurement Device y: SENIS_24-06 Data File: s:\magdata\LCLS\Undulator\L143-112000-09\DATASET0001\Rough Tuning\Z Scans\Run 004\bscanz.dat Temperature (C) L143-112000-09:--> top_start 20.05 --> top_mid 20.05 --> top_end 19.96 --> bot 20.03 --> granite 19.98 --> Air 19.95 Axes position (m) X:0.026508 Y:0.000284 Initial Hall Probe Zero Measurements: Vx_0i = -0.000431 V Vy_0i = -0.000443 V Final Hall Probe Zero Measurements: Vx_0f = -0.000390 V Vy_0f = -0.000443 V Offset Correction Voff = offset+index*increment index = 0,1...19850 Vx:offset = -0.000431 V, increment = 2.053E-09 V Vy:offset = -0.000443 V, increment = 0.000E+00 V Hall Probe Calibration File: Y: C:\CVI\current_calib\SENIS_24-06\SENIS_24-06_y.ini X: c:\cvi\current_calib\HALLx_calib_poly_fit_file.dat Reference Magnet Measurements: Bx_ref = 0.0000xx (T) By_ref = 0.0000xx (T) Magnetic Field Measurements vs Z Analysis Parameters: Input file directory = S:\MagData\LCLS\Undulator\L143-112000-09\DATASET0001\Rough Tuning\Z Scans\Run 004\ Input file name = x+00000_y+000_bscanz.dat Input file type = ZVXYBXYH Correction required = 1 Correction, Bx multiplicative factor = 1.000000 Correction, By multiplicative factor = 1.000000 Correction, Bx additive constant = 0.000015 T Correction, By additive constant = 0.000000 T Correction Bxy additive file = S:\Magdata\Earth Field Correction\earth_field_corr.dat Correction Bxy additive file type = CORR_ZBXY Electron gamma = 26682.250000 Electron energy = 13.634605 Gev Nominal undulator period = 0.030000 m Nominal K value = 3.497737 Nominal radiation wavelength = 1.499506e-010 m Number of undulator poles = 226 Number of end poles (used in analysis) = 4 Cell length = 3.656000 m Nominal phase change through cell = 709.999940 rad Nominal phase of pole after end poles = 14.137167 rad Save as final result = 0 Result file directory = c:\magdata\slac_und_2\ Result file name = zscan_xn0060yp0002.dat Figures close on exit = 0 Figures visible = 1 Trajectory Shim Parameters: Number of segments in the segmented trajectory = 40 Maximum trajectory shift when a shim is moved = 6.000e-007 m Maximum trajectory shift accumulation before add shim = 7.000e-007 m X trajectory end shim pole number = 0 Y trajectory end shim pole number = 0 Experimental parameters Let s = desired trajectory slope change (dimensionless) Let d = distance between the shim and the pole (m) d = p1 * s^2 + p2 * s + p3 Type < 0 shims are reserved for the end shims. Type > 0 shims are reserved for the undulator center shims. 1)X Trajectory Shim Parameters Type = -1 Slope_min = 1.000e-007, Slope_max = 1.000e-005 p1 = 0.000e+000, p2 = -2.180e+003, p3 = 0.000e+000 Type = 1 Slope_min = 1.000e-006, Slope_max = 6.600e-006 p1 = 4.212e+007, p2 = -3.283e+003, p3 = 2.061e-002 Type = 2 Slope_min = 6.600e-006, Slope_max = 1.700e-005 p1 = 4.085e+007, p2 = -1.833e+003, p3 = 1.921e-002 2)Y Trajectory Shim Parameters Type = -1 Slope_min = 0.000e+000, Slope_max = 1.000e+009 p1 = 0.000e+000, p2 = 0.000e+000, p3 = 0.000e+000 Type = 1 Slope_min = 0.000e+000, Slope_max = 1.000e+009 p1 = 0.000e+000, p2 = 0.000e+000, p3 = 0.000e+000 Phase Shim Parameters: Number of segments in the segmented phase error = 40 Maximum positive phase error change before a shim is added = 3.491e-002 rad Maximum negative phase error change before a shim is added = 1.047e-001 rad Gap shim effective width = 2.000e-001 m Nominal undulator gap = 6.800e-003 m Experimental parameters Gap shim correction factor = 1.000e+000 Let c = desired phase error change (rad) Let t = shim thickness (m) t = p1 * c^2 + p2 * c + p3 Type = 1 phase_change_min = 0.000e+000, phase_change_max = 2.530e-001 p1 = 0.000e+000, p2 = 1.580e-003, p3 = 0.000e+000 K Shim Parameters: Cant angle = 4.500e-003 rad Set The Gap, Shim Data Same adjustments on both the upper and lower poles. Shim Magnet Del Gap Del X | Shim Magnet Del Gap Del X # # (mu m) (mm) | # # (mu m) (mm) ---- ------ -------- -------- | ---- ------ -------- -------- 1 1 0.0 0.0 | 32 113 23.9 5.3 2 2 0.0 0.0 | 33 120 17.4 3.9 3 6 38.8 8.6 | 34 121 17.4 3.9 4 7 38.8 8.6 | 35 128 14.2 3.2 5 11 12.6 2.8 | 36 129 14.2 3.2 6 12 12.6 2.8 | 37 136 20.6 4.6 7 14 12.6 2.8 | 38 137 20.6 4.6 8 21 29.4 6.5 | 39 145 19.1 4.2 9 22 29.4 6.5 | 40 146 19.1 4.2 10 29 36.5 8.1 | 41 148 19.1 4.2 11 30 36.5 8.1 | 42 155 27.7 6.1 12 37 24.6 5.5 | 43 156 27.7 6.1 13 38 24.6 5.5 | 44 163 21.4 4.8 14 45 21.8 4.8 | 45 164 21.4 4.8 15 46 21.8 4.8 | 46 171 30.8 6.9 16 53 21.0 4.7 | 47 172 30.8 6.9 17 54 21.0 4.7 | 48 179 29.2 6.5 18 61 14.4 3.2 | 49 180 29.2 6.5 19 62 14.4 3.2 | 50 187 43.2 9.6 20 69 20.3 4.5 | 51 188 43.2 9.6 21 70 20.3 4.5 | 52 195 33.4 7.4 22 78 8.3 1.8 | 53 196 33.4 7.4 23 79 8.3 1.8 | 54 203 31.4 7.0 24 81 8.3 1.8 | 55 204 31.4 7.0 25 88 27.1 6.0 | 56 212 22.8 5.1 26 90 27.1 6.0 | 57 213 22.8 5.1 27 96 22.9 5.1 | 58 215 22.8 5.1 28 97 22.9 5.1 | 59 219 51.3 11.4 29 104 22.1 4.9 | 60 220 51.3 11.4 30 105 22.1 4.9 | 61 224 0.0 0.0 31 112 23.9 5.3 | 62 225 0.0 0.0 X Trajectory Shim Data Same shims on both the upper and lower poles. Shim Pole Z Pole By Delta Slope BL Shim Shim Shim Dim # # (m) +- () (Tm) Type (mm) ---- ---- ---------- -- ----------- ----------- ---- --------- 1 136 0.3375 +1 -1.770e-006 -8.051e-005 1 14.93 2 161 0.7125 -1 2.491e-006 1.133e-004 1 12.69 3 189 1.1324 -1 5.696e-006 2.591e-004 1 3.28 4 202 1.3274 +1 -2.547e-006 -1.158e-004 1 12.52 5 215 1.5224 -1 4.124e-006 1.876e-004 1 7.79 6 222 1.6273 +1 -3.173e-006 -1.443e-004 1 10.62 X Trajectory Shim Change Data For Pre-existing Shims Same shims on both the upper and lower poles. Shim Pole Z Pole By Delta Slope Shim Delta Dim Shim Delta Dim Shim Delta Dim # # (m) +- () Type (mm) Type (mm) Type (mm) ---- ---- ---------- -- ----------- ---- --------- ---- --------- ---- --------- 1 136 0.3375 +1 -1.770e-006 -1 3.86 1 5.24 2 1.54 2 161 0.7125 -1 2.491e-006 -1 5.43 1 7.38 2 2.16 3 189 1.1324 -1 5.696e-006 -1 12.42 1 16.88 2 4.95 4 202 1.3274 +1 -2.547e-006 -1 5.55 1 7.55 2 2.21 5 215 1.5224 -1 4.124e-006 -1 8.99 1 12.22 2 3.58 6 222 1.6273 +1 -3.173e-006 -1 6.92 1 9.40 2 2.76 Y Trajectory Shim Data Shims on both the upper and lower magnets between the poles. Outer steel of shim on left, inner steel on right of bottom shim. Shim Pole Pole Z Mag By #1 By #2 Delta Slope BL Shim Shim Shim Dim # #1 #2 (m) +- +- () (Tm) Type (mm) ---- ---- ---- ---------- ----- ----- ----------- ----------- ---- --------- 1 108 109 -0.0749 +1 -1 -3.251e-006 1.478e-004 1 0.00 2 180 181 1.0049 +1 -1 -1.357e-006 6.173e-005 1 0.00 3 220 221 1.6049 +1 -1 -1.629e-006 7.407e-005 1 0.00 Y Trajectory Shim Change Data For Pre-existing Shims Shims on both the upper and lower magnets between the poles. Outer steel of shim on left, inner steel on right of bottom shim. Shim Pole Pole Delta Slope Shim Delta Dim Shim Delta Dim # #1 #2 () Type (mm) Type (mm) ---- ---- ---- ----------- ---- --------- ---- --------- 1 108 109 -3.251e-006 -1 0.00 1 0.00 2 180 181 -1.357e-006 -1 0.00 1 0.00 3 220 221 -1.629e-006 -1 0.00 1 0.00 Phase Error Gap Shim Data Same shims on both the upper and lower poles. Shim Pole # Pole # Z Start Z End Delta Phaserr dB / B dGap dShim X # Start End (m) (m) Slope (deg/m) Shim (mm) (mm) ---- ------ ------ ------- ------- ------------- ----------- -------- -------- 1 54 65 -0.892 -0.727 4.559e+001 2.210e-003 -0.013 -2.870 2 70 81 -0.652 -0.487 5.140e+001 2.492e-003 -0.015 -3.236 3 135 146 0.323 0.487 4.562e+001 2.211e-003 -0.013 -2.872 Phase Error Phase Shim Data Same shims on both the upper and lower poles. Shim Pole # Pole # Z Shim Delta Phaserr dB / B Shim Dim # Start End (m) (deg) Shim (mm) ---- ------ ------ ------- ------------- ----------- ----------- 1 20 21 -1.395 -2.313e+000 -3.738e-003 0.063792 2 30 31 -1.245 -2.613e+000 -4.222e-003 0.072044 3 35 36 -1.170 -2.730e+000 -4.411e-003 0.075282 4 68 69 -0.675 -2.007e+000 -3.243e-003 0.055348 5 176 177 0.945 -2.140e+000 -3.458e-003 0.059013 6 181 182 1.020 -2.282e+000 -3.688e-003 0.062940 7 187 188 1.110 -4.074e+000 -6.583e-003 0.112339 8 191 192 1.170 -4.758e+000 -7.688e-003 0.131194 9 193 194 1.200 -4.129e+000 -6.673e-003 0.113876 10 197 198 1.260 -2.836e+000 -4.582e-003 0.078199 11 219 220 1.590 -5.312e+000 -8.583e-003 0.146472 K Shim Data Measured K value = 3.511509 Desired K value = 3.497737 Required field change dB / B = -3.9373e-003 Required gap change dgap = 2.3010e-005 m Beam x motion required dx = -5.1134e-003 m Phase Matching Shim Data Entrance: Number of end poles = 4 Phases At The Entrance Poles: Phase = 0 at cell boundary. Pole Phase ExpectPhase Phase Err | Impulse Model # (deg) (deg) (deg) | (deg) ---- ----------- ----------- ----------- | ------------- 1 240.256 0.000 0.000 236.895 2 285.119 0.000 0.000 300.863 3 462.050 0.000 0.000 480.863 4 671.077 0.000 0.000 660.863 5 843.565 810.000 33.565 840.863 6 1029.218 990.000 39.218 1020.863 7 1207.992 1170.000 37.992 1200.863 8 1390.494 1350.000 40.494 1380.863 9 1572.851 1530.000 42.851 1560.863 10 1752.938 1710.000 42.938 1740.863 11 1933.314 1890.000 43.314 1920.863 12 2110.860 2070.000 40.860 2100.863 13 2298.105 2250.000 48.105 2280.863 14 2469.949 2430.000 39.949 2460.863 Mean phase error at the entrance = 40.929 deg Phase shim dimension at the entrance = 0.000e+000 m Exit: Number of end poles = 4 Phases From The Exit Poles To The Cell Boundary: Pole Phase To ExpectPhase Phase Err | Impulse Model # Cell(deg) (deg) (deg) | (deg) ---- ----------- ----------- ----------- | ------------- 226 253.057 0.000 0.000 236.895 225 302.516 0.000 0.000 300.863 224 469.975 0.000 0.000 480.863 223 689.753 0.000 0.000 660.863 222 853.981 810.000 43.981 840.863 221 1050.044 990.000 60.044 1020.863 220 1210.026 1170.000 40.026 1200.863 219 1418.484 1350.000 68.484 1380.863 218 1577.649 1530.000 47.649 1560.863 217 1783.462 1710.000 73.462 1740.863 216 1941.296 1890.000 51.296 1920.863 215 2148.746 2070.000 78.746 2100.863 214 2303.247 2250.000 53.247 2280.863 213 2508.869 2430.000 78.869 2460.863 Mean phase error at the exit = 59.580 deg Phase shim dimension at the exit = 0.000e+000 m Cell: Impulse model phase change in the cell = 40741.727 deg Phase change in the cell = 41044.272 deg Expected phase change in the cell = 40680.000 deg Phase error in the cell = 364.272 deg