SLAC Magnetic Measurements
Date: 05-21-2012
Time: 14:56:12
 
Phase Analysis
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Data File Header:
SLAC Magnetic Measurements
Date: 05-21-2012
Time: 14:52:05
Project: LCLS
Device Type: Undulator
Data Type: 
Serial Number: PHASE_SHIFTER
DATASET Number: 1
Tuning Stage: Rough Tuning
Run Number: 23
Measurement Type: Z Scans
Operator: YL
Comment: field integral gap dependence; gap=20mm
Session first run: 19
Measurement Device x: 
Measurement Device y: SENIS_463
Data File: s:\magdata\LCLS\Undulator\PHASE_SHIFTER\DATASET0001\Rough Tuning\Z Scans\Run 023\bscanz.dat
Temperature (C)
Axes position (m) X:0.044299 Y:0.000420
Initial Hall Probe Zero Measurements:
Vx_0i = 0.001578 V
Vy_0i = 0.001659 V
Final Hall Probe Zero Measurements:
Vx_0f = 0.001570 V
Vy_0f = 0.001646 V
Offset Correction Voff = offset+index*increment
index = 0,1...5600
Vx:offset = 0.001578 V, increment = -1.571E-09 V
Vy:offset = 0.001659 V, increment = -2.315E-09 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\PHASE_SHIFTER\DATASET0001\Rough Tuning\Z Scans\Run 023\
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 = none
Correction Bxy additive file type = CORR_ZBXY
Electron gamma = 16765.211111
Electron energy = 8.567007 Gev
Nominal undulator period = 0.030000 m
Nominal K value = 9.900000
Nominal radiation wavelength = 2.668619e-009 m
Photon energy = 464.600699 eV
Number of undulator poles = 4
Number of end poles (used in analysis) = 0
Cell length = 0.400000 m

Bx Peak And Zero Field Summary:
Number of Poles = 0
Number of End Poles (excluded in statistics) = 0
Peak Fields: Ave = 0.000000 T, RMS = 0.000000 T
Peak Field Spacing: Ave = 0.000000 m, RMS = 0.000000 m
Zero Field Spacing: Ave = 0.000000 m, RMS = 0.000000 m
Average Undulator Period = 0.000000 m

By Peak And Zero Field Summary:
Number of Poles = 4
Number of End Poles (excluded in statistics) = 0
Peak Fields: Ave = 0.523994 T, RMS = 0.216043 T
Peak Field Spacing: Ave = 0.031237 m, RMS = 0.009558 m
Zero Field Spacing: Ave = 0.037786 m, RMS = 0.000041 m
Average Undulator Period = 0.075573 m

Hall Probe Overall Field Integrals:
Int Bx dz =   1.0578e-005 Tm
Int Int Bx dz dz =   6.8097e-007 Tm^2
Int By dz =   5.9759e-006 Tm
Int Int By dz dz =   7.9135e-006 Tm^2

Trajectory Exit Information:
X at exit =   2.7692e-007 m
X slope at exit =   2.0912e-007
Y at exit =  -2.3830e-008 m
Y slope at exit =  -3.7017e-007

Cell Phase Relative To Nominal Radiation Wave:
Nominal Radiation Wavelength =   2.66862e-009 m
Cell Length = 0.400000 m
Phase Change Of Cell =     437.111 deg

Phase Integral:
PI = Int_(z_enter)^(z_exit) [Int_-inf^z By(z) dz]^2 dz (T^2m^3)
PI =  4.130e-006 T^2m^3
PI Of Cell =  4.133e-006 T^2m^3