SLAC Magnetic Measurements
Date: 08-24-2007
Time: 16:58:26
 
Planar Insertion Device Analysis
--------------------------------

Data File Header:
SLAC Magnetic Measurements
Date: 08-24-2007
Time: 16:36:05
Project: LCLS
Device Type: Undulator
Data Type: 
Serial Number: L143-112000-24
DATASET Number: 1
Tuning Stage: Rough Tuning
Run Number: 2
Measurement Type: Z Scans
Operator: aww
Comment: x=0.026206 y=0.000212   Aded x-shim, 2screw, 0.29 in, at pole 75.
Measurement Device x: 
Measurement Device y: SENIS_24-06
Data File: s:\magdata\LCLS\Undulator\L143-112000-24\DATASET0001\Rough Tuning\Z Scans\Run 002\bscanz.dat
Temperature (C)
L143-112000-24:--> top_start 20.09 --> top_mid 20.10 --> top_end 20.01 --> bot 20.08 --> granite 20.03 --> Air 20.02 
Axes position (m) X:0.026206 Y:0.000213
Initial Hall Probe Zero Measurements:
Vx_0i = -0.000441 V
Vy_0i = -0.000437 V
Final Hall Probe Zero Measurements:
Vx_0f = -0.000403 V
Vy_0f = -0.000452 V
Offset Correction Voff = offset+index*increment
index = 0,1...19850
Vx:offset = -0.000441 V, increment = 1.926E-09 V
Vy:offset = -0.000437 V, increment = -7.388E-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 002\
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 = 1.276208 T, RMS = 0.003802 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 =  -1.1743e-004 Tm
Int Int Bx dz dz =  -8.9748e-005 Tm^2
Int By dz =  -7.6250e-004 Tm
Int Int By dz dz =  -9.0969e-004 Tm^2

Trajectory Exit Information:
X at exit =  -2.0004e-005 m
X slope at exit =  -1.6767e-005
Y at exit =   1.9735e-006 m
Y slope at exit =   2.5822e-006

Calculated Undulator Parameters:
Keff = 3.505146
Beff = 1.251339 T
Lambda_rad = 1.505189e-010 m

Phase Fluctuations:
Slippage vs Z At Peaks Fitted Slope =   5.01742e-009
Undulator Period = 0.029999 m
Radiation Wavelength =   1.50519e-010 m
Phase Error (From Slippage vs Z Fit Residuals): Ave = -0.000000 deg, RMS = 41.241082 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) =     830.850 deg, mod_360 =     110.850 deg
Phase Change Through Undulator (Poles Between End Poles) =   39330.589 deg, mod_360 =      90.589 deg
Phase Change Out Of Undulator (To Pole Before End Poles) =     870.095 deg, mod_360 =     150.095 deg
Phase Change Of Cell =   41031.534 deg
Nominal Phase Change Of Cell =   40680.000 deg
Phase Error Of Cell =     351.534 deg