SLAC Magnetic Measurements
Date: 12-17-2015
Time: 17:06:12
 
Planar Insertion Device Analysis
--------------------------------

Data File Header:
SLAC Magnetic Measurements
Date: 12-17-2015
Time: 17:01:50
Project: LCLS
Device Type: Undulator
Data Type: 
Serial Number: L143-112000-13
DATASET Number: 52
Tuning Stage: Fine Tuning
Run Number: 1
Measurement Type: Z Scans
Operator: YL
Comment: at min K
Session first run: 1
Measurement Device x: 
Measurement Device y: SENTRON_441
Data File: c:\magdata\LCLS\Undulator\L143-112000-13\DATASET0052\Fine Tuning\Z Scans\Run 001\bscanz.dat
Temperature (C)
L143-112000-13:--> T1 19.90 --> T2 19.94 --> T3 19.90 --> T4 19.92 --> T5 20.03 --> T(C) 19.99 --> RefM_2 20.03 
Axes position (m) X:0.028899 Y:0.000134
Initial Hall Probe Zero Measurements:
Vx_0i = 0.001142 V
Vy_0i = -0.003464 V
Final Hall Probe Zero Measurements:
Vx_0f = 0.001137 V
Vy_0f = -0.003460 V
Offset Correction Voff = offset+index*increment
index = 0,1...20000
Vx:offset = 0.001142 V, increment = -2.671E-10 V
Vy:offset = -0.003464 V, increment = 1.998E-10 V
Hall Probe Calibration File:
Y: c:\CVI\current_calib\Sentron_441\Sentron_441_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\L143-112000-13\DATASET0052\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 = -0.000018 T
Correction, By additive constant = -0.000012 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 = 0.030000 m
Nominal K value = 3.498623
Nominal radiation wavelength = 1.499700e-10 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
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 = -0.000018 T
CORR_BY_ADD = -0.000012 T
CORR_BX_ADD_FILE = none
CORR_BY_ADD_FILE = none
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Peak And Zero Field Summary:
Number of Poles = 226
Number of End Poles (excluded in statistics) = 4
Peak Fields: Ave = 1.276037 T, RMS = 0.006668 T
Peak Field Spacing: Ave = 0.015001 m, RMS = 0.000025 m
Zero Field Spacing: Ave = 0.015001 m, RMS = 0.000040 m
Average Undulator Period = 0.030003 m

Hall Probe Overall Field Integrals:
Int Bx dz =   -1.2332e-05 Tm
Int Int Bx dz dz =   -7.1597e-05 Tm^2
Int By dz =    3.0801e-05 Tm
Int Int By dz dz =    4.5334e-05 Tm^2

Trajectory Exit Information:
X at exit =    9.9664e-07 m
X slope at exit =    6.7713e-07
Y at exit =    1.5740e-06 m
Y slope at exit =    2.7112e-07

Calculated Undulator Parameters:
Keff = 3.498080
Beff = 1.248681 T
Lambda_rad = 1.499425e-10 m

Phase Fluctuations:
Slippage vs Z At Peaks Fitted Slope =    4.99767e-09
Undulator Period = 0.030003 m
Radiation Wavelength =    1.49943e-10 m
Phase Error (From Slippage vs Z Fit Residuals):
  Ave = -0.000000 deg, RMS = 3.762582 deg

Phase Relative To Nominal Radiation Wave:
Nominal Radiation Wavelength =    1.49970e-10 m
Cell Length = 3.656000 m
Number Of End Poles = 4
Entrance:
  Phase Error Of First 10 Poles After The End Poles
  Ave = -0.782453 deg, RMS = 3.671621 deg
Center:
  Phase Error Of All Poles In Undulator Center:
  Ave = -4.227242 deg, RMS = 4.454353 deg
Exit:
  Phase Error To Cell Boundary Of Last 10 Poles Before The End Poles
  Ave = -3.329506 deg, RMS = 5.909917 deg
Cell:
  Phase Change Of Cell =   40668.425 deg
  Nominal Phase Change Of Cell =   40680.000 deg
  Phase Error Of Cell =     -11.575 deg