SLAC Magnetic Measurements
Date: 07-27-2011
Time: 11:42:26
 
Planar Insertion Device Analysis
--------------------------------

Data File Header:
SLAC Magnetic Measurements
Date: 07-27-2011
Time: 11:35:44
Project: LCLS
Device Type: Undulator
Data Type: 
Serial Number: A1-ANL
DATASET Number: 3
Tuning Stage: Rough Tuning
Run Number: 4
Measurement Type: Z Scans
Operator: YL
Comment: Gap =15mm; Hysteresis; run4
Session first run: 46
Measurement Device x: 
Measurement Device y: SENIS_463
Data File: s:\magdata\LCLS\Undulator\A1-ANL\DATASET0003\Rough Tuning\Z Scans\Run 004\bscanz.dat
Temperature (C)
Axes position (m) X:0.042678 Y:0.000124
Initial Hall Probe Zero Measurements:
Vx_0i = 0.001524 V
Vy_0i = 0.002196 V
Final Hall Probe Zero Measurements:
Vx_0f = 0.001494 V
Vy_0f = 0.002213 V
Offset Correction Voff = offset+index*increment
index = 0,1...19600
Vx:offset = 0.001524 V, increment = -1.538E-09 V
Vy:offset = 0.002196 V, increment = 8.703E-10 V
Hall Probe Calibration File:
Y: C:\CVI\current_calib\SENIS_463\SENIS_463_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\A1-ANL\DATASET0003\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 = 0.000000 T
Correction, By additive constant = 0.000006 T
Correction Bxy additive file = none
Correction Bxy additive file type = CORR_ZBXY
Electron gamma = 26686.340000
Electron energy = 13.636695 Gev
Nominal undulator period = 0.033000 m
Nominal K value = 1.702293
Nominal radiation wavelength = 5.673840e-011 m
Number of undulator poles = 144
Number of end poles (used in analysis) = 4
Cell length = 2.376000 m
Nominal phase change through cell = 452.389342 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

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
The Measured Fields Were Corrected:
Bx_corr = CORR_BX_MULT * Bx + CORR_BX_ADD + CORR_BX_ADD_FILE
By_corr = CORR_BY_MULT * By + CORR_BY_ADD + CORR_BY_ADD_FILE
Parameters:
CORR_BX_MULT = 1.000000 
CORR_BY_MULT = 1.000000 
CORR_BX_ADD = 0.000000 T
CORR_BY_ADD = 0.000006 T
CORR_BX_ADD_FILE = none
CORR_BY_ADD_FILE = none
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Peak And Zero Field Summary:
Number of Poles = 144
Number of End Poles (excluded in statistics) = 4
Peak Fields: Ave = 0.556664 T, RMS = 0.002898 T
Peak Field Spacing: Ave = 0.016500 m, RMS = 0.000027 m
Zero Field Spacing: Ave = 0.016501 m, RMS = 0.000045 m
Average Undulator Period = 0.033000 m

Hall Probe Overall Field Integrals:
Int Bx dz =   0.0000e+000 Tm
Int Int Bx dz dz =   0.0000e+000 Tm^2
Int By dz =  -1.5687e-004 Tm
Int Int By dz dz =  -2.4933e-005 Tm^2

Trajectory Exit Information:
X at exit =  -5.4812e-007 m
X slope at exit =  -3.4487e-006
Y at exit =  -0.0000e+000 m
Y slope at exit =  -0.0000e+000

Calculated Undulator Parameters:
Keff = 1.707715
Beff = 0.554216 T
Lambda_rad = 5.695285e-011 m

Phase Fluctuations:
Slippage vs Z At Peaks Fitted Slope =   1.72584e-009
Undulator Period = 0.033000 m
Radiation Wavelength =   5.69528e-011 m
Phase Error (From Slippage vs Z Fit Residuals):
  Ave = 0.000000 deg, RMS = 4.583791 deg

Phase Relative To Nominal Radiation Wave:
Nominal Radiation Wavelength =   5.67384e-011 m
Cell Length = 2.376000 m
Number Of End Poles = 4
Entrance:
  Phase Error Of First 10 Poles After The End Poles
  Ave = -79.660605 deg, RMS = 7.316878 deg
Center:
  Phase Error Of All Poles In Undulator Center:
  Ave = -37.489122 deg, RMS = 27.389167 deg
Exit:
  Phase Error To Cell Boundary Of Last 10 Poles Before The End Poles
  Ave = -93.474962 deg, RMS = 3.601409 deg
Cell:
  Phase Change Of Cell =   25836.095 deg
  Nominal Phase Change Of Cell =   25920.000 deg
  Phase Error Of Cell =     -83.905 deg