SLAC Magnetic Measurements
Date: 07-03-2007
Time: 15:58:09
 
Planar Insertion Device Analysis
--------------------------------

Data File Header:
SLAC Magnetic Measurements
Date: 07-03-2007
Time: 15:45:23
Project: LCLS
Device Type: Undulator
Data Type: 
Serial Number: L143-112000-14
DATASET Number: 1
Tuning Stage: Rough Tuning
Run Number: 72
Measurement Type: Z Scans
Operator: AW
Comment: x=0.026219 y=-0.000054.  Add phase shim 0.3 mm at 5 and 222.
Measurement Device x: 
Measurement Device y: SENIS_24-06
Data File: s:\magdata\LCLS\Undulator\L143-112000-14\DATASET0001\Rough Tuning\Z Scans\Run 072\bscanz.dat
Temperature (C)
L143-112000-14:--> top_start 20.03 --> top_mid 20.01 --> top_end 19.95 --> bot 20.01 --> granite 20.00 --> Air 19.89 
Axes position (m) X:0.026219 Y:-0.000054
Initial Hall Probe Zero Measurements:
Vx_0i = -0.000418 V
Vy_0i = -0.000492 V
Final Hall Probe Zero Measurements:
Vx_0f = -0.000515 V
Vy_0f = -0.000519 V
Offset Correction Voff = offset+index*increment
index = 0,1...19850
Vx:offset = -0.000418 V, increment = -4.888E-09 V
Vy:offset = -0.000492 V, increment = -1.329E-09 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\L143-112000-14\DATASET0001\Rough Tuning\Z Scans\Run 072\
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 = 0.000000 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 = 26677.940000
Electron energy = 13.632402 Gev
Nominal undulator period = 0.030000 m
Nominal K value = 3.496803
Nominal radiation wavelength = 1.499303e-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_2\
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 = 1.274891 T, RMS = 0.006852 T
Peak Field Spacing: Ave = 0.015000 m, RMS = 0.000022 m
Zero Field Spacing: Ave = 0.015001 m, RMS = 0.000030 m
Average Undulator Period = 0.030001 m

Hall Probe Overall Field Integrals:
Int Bx dz =   3.6610e-006 Tm
Int Int Bx dz dz =  -1.8608e-005 Tm^2
Int By dz =   1.7594e-005 Tm
Int Int By dz dz =   6.7216e-005 Tm^2

Trajectory Exit Information:
X at exit =   1.4782e-006 m
X slope at exit =   3.8690e-007
Y at exit =   4.0922e-007 m
Y slope at exit =  -8.0509e-008

Calculated Undulator Parameters:
Keff = 3.496746
Beff = 1.248282 T
Lambda_rad = 1.499293e-010 m

Phase Fluctuations:
Slippage vs Z At Peaks Fitted Slope =   4.99754e-009
Undulator Period = 0.030001 m
Radiation Wavelength =   1.49929e-010 m
Phase Error (From Slippage vs Z Fit Residuals): Ave = -0.000000 deg, RMS = 3.247610 deg

Phase Relative To Nominal Radiation Wave:
Nominal Radiation Wavelength =   1.49930e-010 m
Cell Length = 3.656000 m
Number Of End Poles = 4
Phase Change Into Undulator (To Pole After End Poles) =     819.345 deg, mod_360 =      99.345 deg
Phase Change Through Undulator (Poles Between End Poles) =   39034.224 deg, mod_360 =     154.224 deg
Phase Change Out Of Undulator (To Pole Before End Poles) =     820.506 deg, mod_360 =     100.506 deg
Phase Change Of Cell =   40674.075 deg
Nominal Phase Change Of Cell =   40680.000 deg
Phase Error Of Cell =      -5.925 deg