SLAC Magnetic Measurements
Date: 08-25-2007
Time: 10:55:14
 
Planar Insertion Device Analysis
--------------------------------

Data File Header:
SLAC Magnetic Measurements
Date: 08-25-2007
Time: 10:42:54
Project: LCLS
Device Type: Undulator
Data Type: 
Serial Number: L143-112000-24
DATASET Number: 1
Tuning Stage: Rough Tuning
Run Number: 4
Measurement Type: Z Scans
Operator: aww
Comment: x=0.026206 y=0.000212   Aded x-shims: 1screw, 0.2 in, at 6, 1-screw, 0.06in at 27; 2 turns in at 165.
Measurement Device x: 
Measurement Device y: SENIS_24-06
Data File: s:\magdata\LCLS\Undulator\L143-112000-24\DATASET0001\Rough Tuning\Z Scans\Run 004\bscanz.dat
Temperature (C)
L143-112000-24:--> top_start 20.09 --> top_mid 20.07 --> top_end 19.98 --> bot 20.05 --> granite 20.01 --> Air 20.00 
Axes position (m) X:0.026206 Y:0.000213
Initial Hall Probe Zero Measurements:
Vx_0i = -0.000373 V
Vy_0i = -0.000460 V
Final Hall Probe Zero Measurements:
Vx_0f = -0.000415 V
Vy_0f = -0.000458 V
Offset Correction Voff = offset+index*increment
index = 0,1...19850
Vx:offset = -0.000373 V, increment = -2.074E-09 V
Vy:offset = -0.000460 V, increment = 1.478E-10 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\L143-112000-24\DATASET0001\Rough Tuning\Z Scans\Run 004\
Input file name = x+00000_y+000_bscanz.dat
Input file type = ZVXYBXYH
Correction required = 0
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 = 26679.990000
Electron energy = 13.633450 Gev
Nominal undulator period = 0.030000 m
Nominal K value = 3.497246
Nominal radiation wavelength = 1.499399e-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
Save as final result = 0
Result file directory = c:\magdata\slac_und_25\
Result file name = zscan_xn0060yp0002.dat
Figures close on exit = 0
Figures visible = 1

Peak And Zero Field Summary:
Number of Poles = 226
Number of End Poles (excluded in statistics) = 4
Peak Fields: Ave = 1.276005 T, RMS = 0.003827 T
Peak Field Spacing: Ave = 0.014999 m, RMS = 0.000023 m
Zero Field Spacing: Ave = 0.015000 m, RMS = 0.000043 m
Average Undulator Period = 0.029999 m

Hall Probe Overall Field Integrals:
Int Bx dz =  -1.3484e-004 Tm
Int Int Bx dz dz =  -1.3905e-004 Tm^2
Int By dz =  -2.0077e-004 Tm
Int Int By dz dz =  -2.1585e-004 Tm^2

Trajectory Exit Information:
X at exit =  -4.7465e-006 m
X slope at exit =  -4.4149e-006
Y at exit =   3.0577e-006 m
Y slope at exit =   2.9650e-006

Calculated Undulator Parameters:
Keff = 3.496540
Beff = 1.248273 T
Lambda_rad = 1.498833e-010 m

Phase Fluctuations:
Slippage vs Z At Peaks Fitted Slope =   4.99626e-009
Undulator Period = 0.029999 m
Radiation Wavelength =   1.49883e-010 m
Phase Error (From Slippage vs Z Fit Residuals): Ave = -0.000000 deg, RMS = 10.725154 deg

Phase Relative To Nominal Radiation Wave:
Nominal Radiation Wavelength =   1.49940e-010 m
Cell Length = 3.656000 m
Number Of End Poles = 4
Phase Change Into Undulator (To Pole After End Poles) =     829.181 deg, mod_360 =     109.181 deg
Phase Change Through Undulator (Poles Between End Poles) =   39065.675 deg, mod_360 =     185.675 deg
Phase Change Out Of Undulator (To Pole Before End Poles) =     827.443 deg, mod_360 =     107.443 deg
Phase Change Of Cell =   40722.299 deg
Nominal Phase Change Of Cell =   40680.000 deg
Phase Error Of Cell =      42.299 deg