SLAC Magnetic Measurements
Date: 09-30-2014
Time: 15:32:49
 
Phase Analysis
--------------

Data File Header:
SLAC Magnetic Measurements
Date: 09-30-2014
Time: 15:29:32
Project: LCLS
Device Type: Undulator
Data Type: 
Serial Number: PHASE_SHIFTER
DATASET Number: 1
Tuning Stage: Fine Tuning
Run Number: 11
Measurement Type: Z Scans
Operator: YL
Comment: Check before installation; 89.91mm gap
Session first run: 2
Measurement Device x: 
Measurement Device y: SENTRON_441
Data File: s:\magdata\LCLS\Undulator\PHASE_SHIFTER\DATASET0001\Fine Tuning\Z Scans\Run 011\bscanz.dat
Temperature (C)
PHASE_SHIFTER:--> T1 20.25 --> T2 20.22 --> T5 20.03 --> T3 20.24 --> Air 19.95 --> T4 20.17 
Axes position (m) X:0.016850 Y:0.000222
Initial Hall Probe Zero Measurements:
Vx_0i = 0.001184 V
Vy_0i = -0.002864 V
Final Hall Probe Zero Measurements:
Vx_0f = 0.001100 V
Vy_0f = -0.002888 V
Offset Correction Voff = offset+index*increment
index = 0,1...2500
Vx:offset = 0.001184 V, increment = -3.354E-08 V
Vy:offset = -0.002864 V, increment = -9.828E-09 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 = s:\MagData\LCLS\Undulator\PHASE_SHIFTER\DATASET0001\Fine Tuning\Z Scans\Run 011\
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 = 0.055000 m
Nominal K value = 3.500000
Nominal radiation wavelength = 6.971071e-010 m
Photon energy = 1778.553720 eV
Number of undulator poles = 4
Number of end poles (used in analysis) = 0
Cell length = 0.500000 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 = 2
Number of End Poles (excluded in statistics) = 0
Peak Fields: Ave = 0.040186 T, RMS = 0.000156 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 = NaN m

Magnetic Length:
(Length between limits where abs(B) < threshold)
Field threshold to determine length = 0.000040 T
Magnetic length of Bx =   0.2034 m
Magnetic length of By =   0.0000 m

Magnetic Length:
(Length between limits where abs(Int B dz) < threshold)
Field integral threshold to determine length = 0.000003 Tm
Magnetic length of Bx =   0.1718 m
Magnetic length of By =   0.4060 m

Hall Probe Overall Field Integrals:
Int Bx dz =   2.9074e-005 Tm
Int Int Bx dz dz =   6.1925e-006 Tm^2
Int By dz =  -1.9654e-005 Tm
Int Int By dz dz =  -3.7556e-006 Tm^2

Trajectory Exit Information:
X at exit =  -1.3142e-007 m
X slope at exit =  -6.8778e-007
Y at exit =  -2.1670e-007 m
Y slope at exit =  -1.0174e-006

Cell Phase Relative To Nominal Radiation Wave:
Nominal Radiation Wavelength =   6.97107e-010 m
Cell Length = 0.500000 m
Phase Change Of Cell =     471.094 deg

Phase Integral:
PI = Int_(z_enter)^(z_exit) {[Int_(-inf)^(z) Bx(z*) dz*]^2 + [Int_(-inf)^(z) By(z*) dz*]^2} dz (T^2m^3)
PI =  3.721e-008 T^2m^3
PI Of Cell =  3.723e-008 T^2m^3