SLAC Magnetic Measurements
Date: 03-11-2016
Time: 11:05:09
 
Planar Insertion Device Analysis
--------------------------------

Data File Header:
SLAC Magnetic Measurements
Date: 03-11-2016
Time: 10:47:37
Project: LCLS
Device Type: Undulator
Data Type: 
Serial Number: HXU-32
DATASET Number: 1
Tuning Stage: Fine Tuning
Run Number: 1
Measurement Type: Z Scans
Operator: 
Comment: first measurement
Session first run: 1
Measurement Device x: 
Measurement Device y: SENTRON_463_Y
Data File: c:\magdata\LCLS\Undulator\HXU-32\DATASET0001\Fine Tuning\Z Scans\Run 001\bscanz.dat
Temperature (C)
HXU-32:--> T1 20.00 --> T2 19.98 --> T3 20.00 --> T4 19.88 --> T5 19.89 --> T(C) 19.94 --> RefM_2 19.96 
Axes position (m) X:0.000000 Y:0.000249
Initial Hall Probe Zero Measurements:
Vx_0i = 0.001459 V
Vy_0i = 0.001470 V
Final Hall Probe Zero Measurements:
Vx_0f = 0.001588 V
Vy_0f = 0.001639 V
Offset Correction Voff = offset+index*increment
index = 0,1...20499
Vx:offset = 0.001459 V, increment = 6.281E-09 V
Vy:offset = 0.001470 V, increment = 8.275E-09 V
Hall Probe Calibration File:
Y: C:\CVI\current_calib\SENTRON_463_Y\SENTRON_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 = c:\magdata\LCLS\Undulator\HXU-32\DATASET0001\Fine Tuning\Z Scans\Run 001\
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 = -0.000001 T
Correction, By additive constant = 0.000012 T
Correction Bxy additive file = none
Correction Bxy additive file type = CORR_ZBXY
Electron gamma = 26692.700000
Electron energy = 13.639945 Gev
Nominal undulator period = 0.032000 m
Nominal K value = 3.500000
Nominal radiation wavelength = 1.599999e-10 m
Number of undulator poles = 212
Number of end poles (used in analysis) = 4
Cell length = 3.656000 m
Nominal phase change through cell = 666.017643 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_ADDT = -0.000001 T
CORR_BY_ADDT = 0.000012 T
CORR_BX_ADD_FILE = none
CORR_BY_ADD_FILE = none
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Peak And Zero Field Summary:
Number of Poles = 212
Number of End Poles (excluded in statistics) = 4
Peak Fields: Ave = 0.922957 T, RMS = 0.003407 T
Peak Field Spacing: Ave = 0.016001 m, RMS = 0.000024 m
Zero Field Spacing: Ave = 0.016000 m, RMS = 0.000030 m
Average Undulator Period = 0.032002 m

Hall Probe Overall Field Integrals:
Int Bx dz =   -2.8538e-06 Tm
Int Int Bx dz dz =    2.2430e-05 Tm^2
Int By dz =   -5.3020e-06 Tm
Int Int By dz dz =    3.5554e-06 Tm^2

Trajectory Exit Information:
X at exit =    7.8143e-08 m
X slope at exit =   -1.1653e-07
Y at exit =   -4.9299e-07 m
Y slope at exit =    6.2723e-08

Calculated Undulator Parameters:
Keff = 2.696287
Beff = 0.902323 T
Lambda_rad = 1.040918e-10 m

Phase Fluctuations:
Slippage vs Z At Peaks Fitted Slope =    3.25262e-09
Undulator Period = 0.032002 m
Radiation Wavelength =    1.04092e-10 m
Phase Error (From Slippage vs Z Fit Residuals):
  Ave = -0.000000 deg, RMS = 10.500317 deg

Phase Relative To Nominal Radiation Wave:
Nominal Radiation Wavelength =    1.60000e-10 m
Cell Length = 3.656000 m
Number Of End Poles = 4
Entrance:
  Phase Error Of First 10 Poles After The End Poles
  Ave = -549.229769 deg, RMS = 189.420360 deg
Center:
  Phase Error Of All Poles In Undulator Center:
  Ave = -6638.485000 deg, RMS = 3713.262727 deg
Exit:
  Phase Error To Cell Boundary Of Last 10 Poles Before The End Poles
  Ave = -555.857315 deg, RMS = 192.322915 deg
Cell:
  Phase Change Of Cell =   24852.274 deg
  Nominal Phase Change Of Cell =   38160.000 deg
  Phase Error Of Cell =  -13307.726 deg