SLAC Magnetic Measurements
Date: 09-04-2015
Time: 10:36:08
 
EPU Analysis
------------

Data File Header:
SLAC Magnetic Measurements
Date: 09-04-2015
Time: 10:36:06
Hall Probe Array Analysis
*************************
Bx, By, and Bz vs z:
     Z           Bx           By           Bz     
    (m)          (T)          (T)          (T)    
-----------  -----------  -----------  -----------

Analysis Parameters:
Input file directory = C:\MagData\LCLS\Undulator\Delta\DATASET0001\Assembled Measurements\Run 144\LPVMF\KR1000\
Input file name = hall2_anal_meas_field.dat
Input file type = ZBXYZH
Correction required = 0
Correction, Bx multiplicative factor = 1.000000 
Correction, By multiplicative factor = 1.000000 
Correction, Bx additive constant = -0.000025 T
Correction, By additive constant = 0.000032 T
Correction Bxy additive file = none
Correction Bxy additive file type = CORR_ZBXY
Electron gamma = 26627.100000
Electron energy = 13.606423 Gev
Nominal undulator period = 0.000000 m
Nominal K value = 0.000000
Nominal radiation wavelength = 0.000000e+00 m
Number of undulator poles = 200
Number of end poles (used in analysis) = 4
Cell length = 3.126000 m
Nominal phase change through cell = 201.061930 rad
Nominal phase of pole after end poles = -199.491134 rad
Number of poles for entrance and exit phase error statistics = 5

Bx Peak And Zero Field Summary:
Number of Poles = 196
Number of End Poles (excluded in statistics) = 4
Peak Fields: Ave = 0.843967 T, RMS = 0.006971 T
Peak Field Spacing: Ave = 0.016000 m, RMS = 0.000115 m
Zero Field Spacing: Ave = 0.016000 m, RMS = 0.000064 m
Average Undulator Period = 0.032000 m

By Peak And Zero Field Summary:
Number of Poles = 128
Number of End Poles (excluded in statistics) = 4
Peak Fields: Ave = 0.028788 T, RMS = 0.005370 T
Peak Field Spacing: Ave = 0.024906 m, RMS = 0.024583 m
Zero Field Spacing: Ave = 0.024997 m, RMS = 0.024178 m
Average Undulator Period = 0.049994 m

Bx Field Harmonics:
In the undulator center, over an integer number of periods, expand Bx as
Bx(z) = a0 + Sum{ an cos(n 2 pi z / lambda_u) + bn sin(n 2 pi z / lambda_u) }
   n         an        bn   
            (T)       (T)   
--------  --------  --------
   0       0.00006
   1       0.00180  -0.85686
   2      -0.00008   0.00017
   3      -0.00086   0.00135
   4       0.00009  -0.00007
   5      -0.00045   0.01505
   6      -0.00006  -0.00001
   7       0.00006   0.00015
   8       0.00005  -0.00000
   9       0.00002  -0.00042
  10      -0.00005   0.00001
  11      -0.00001  -0.00007
  12       0.00005  -0.00000
  13      -0.00000   0.00006
  14      -0.00005  -0.00000
  15      -0.00000  -0.00005
  16       0.00005   0.00000
  17      -0.00000   0.00005
  18      -0.00005  -0.00000
  19       0.00000  -0.00005
  20       0.00005   0.00000

By Field Harmonics:
In the undulator center, over an integer number of periods, expand By as
By(z) = a0 + Sum{ an cos(n 2 pi z / lambda_u) + bn sin(n 2 pi z / lambda_u) }
   n         an        bn   
            (T)       (T)   
--------  --------  --------
   0      -0.00006
   1       0.00122   0.00014
   2       0.00015   0.00078
   3       0.00023  -0.00012
   4       0.00047   0.00036
   5       0.00011  -0.00002
   6      -0.00001   0.00003
   7      -0.00004  -0.00001
   8       0.00003  -0.00003
   9      -0.00000   0.00001
  10      -0.00003   0.00003
  11      -0.00001  -0.00001
  12      -0.00000   0.00000
  13      -0.00000  -0.00000
  14      -0.00000  -0.00000
  15      -0.00000   0.00000
  16       0.00000  -0.00000
  17       0.00000  -0.00000
  18      -0.00000   0.00000
  19      -0.00000  -0.00000
  20      -0.00000   0.00000

Hall Probe Overall Field Integrals:
Int Bx dz =    1.6230e-04 Tm
Int Int Bx dz dz =    1.5780e-04 Tm^2
Int By dz =   -1.2139e-04 Tm
Int Int By dz dz =   -4.7717e-04 Tm^2

Trajectory Exit Information:
X at exit =   -1.0720e-05 m
X slope at exit =   -2.7875e-06
Y at exit =   -3.4329e-06 m
Y slope at exit =   -3.5446e-06

Calculated Undulator Parameters:
Keff = 2.567596
Beff = 0.859326 T
Lambda_rad = 9.695331e-11 m

Phase Fluctuations:
Slippage vs Z At Peaks Fitted Slope =    3.02980e-09
Undulator Period = 0.032000 m
Radiation Wavelength =    9.69533e-11 m
Phase Error (From Slippage vs Z Fit Residuals):
  Ave = -0.000000 deg, RMS = 13.212123 deg

Phase Relative To Nominal Radiation Wave:
Nominal Radiation Wavelength =    0.00000e+00 m, (if 0, use radiation wavelength)
Cell Length = 3.126000 m
Number Of End Poles = 4
Entrance:
  Phase Error Of First 5 Poles After The End Poles
  Ave = 12072.142680 deg, RMS = 3.107123 deg
Center:
  Phase Error Of All Poles In Undulator Center:
  Ave = 12039.356881 deg, RMS = 13.021395 deg
Exit:
  Phase Error To Cell Boundary Of Last 5 Poles Before The End Poles
  Ave = 11368.988408 deg, RMS = 8.745511 deg
Cell:
  Phase Change Of Cell =   34929.344 deg
  Nominal Phase Change Of Cell =   11520.000 deg
  Phase Error Of Cell =   23409.344 deg