SLAC Magnetic Measurements
Date: 10-27-2014
Time: 17:25:20
 
Phase Analysis
--------------

Data File Header:
SLAC Magnetic Measurements
Date: 10-24-2014
Time: 11:21:01
Project: LCLS
Device Type: Undulator
Data Type: 
Serial Number: PHASE_SHIFTER
DATASET Number: 1
Tuning Stage: Fine Tuning
Run Number: 34
Measurement Type: Z Scans
Operator: YL
Comment: Check fiducialization; final; Gap = 13mm
Session first run: 34
Measurement Device x: 
Measurement Device y: SENTRON_441
Data File: s:\magdata\LCLS\Undulator\PHASE_SHIFTER\DATASET0001\Fine Tuning\Z Scans\Run 034\bscanz.dat
Temperature (C)
PHASE_SHIFTER:--> T1 19.99 --> T2 20.03 --> T5 19.95 --> T3 20.02 --> Air 20.03 --> T4 20.00 
Axes position (m) X:0.040854 Y:0.000450
Initial Hall Probe Zero Measurements:
Vx_0i = 0.001190 V
Vy_0i = -0.002965 V
Final Hall Probe Zero Measurements:
Vx_0f = 0.001168 V
Vy_0f = -0.002977 V
Offset Correction Voff = offset+index*increment
index = 0,1...5000
Vx:offset = 0.001190 V, increment = -4.409E-09 V
Vy:offset = -0.002965 V, increment = -2.369E-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 = V:\MET\MagServe\MagData\LCLS\Undulator\PHASE_SHIFTER\DATASET0001\Fine Tuning\Z Scans\Run 034\
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 = -0.000015 T
Correction, By additive constant = -0.000010 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 = 9.900000
Nominal radiation wavelength = 4.892469e-09 m
Photon energy = 253.418563 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 = 0.754610 T, RMS = 0.213912 T
Peak Field Spacing: Ave = 0.030296 m, RMS = 0.011707 m
Zero Field Spacing: Ave = 0.036983 m, RMS = 0.000103 m
Average Undulator Period = 0.000000 m

Magnetic Length:
(Length between limits where abs(B) < threshold)
Field threshold to determine length = 0.000040 T
Magnetic length of Bx =   0.1826 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 =   0.1816 m
Magnetic length of By =   0.3284 m

Hall Probe Overall Field Integrals:
Int Bx dz =    2.1758e-05 Tm
Int Int Bx dz dz =    5.2842e-06 Tm^2
Int By dz =   -1.7195e-05 Tm
Int Int By dz dz =    1.8866e-07 Tm^2

Trajectory Exit Information:
X at exit =    6.6018e-09 m
X slope at exit =   -6.0172e-07
Y at exit =   -1.8491e-07 m
Y slope at exit =   -7.6139e-07

Cell Phase Relative To Nominal Radiation Wave:
Nominal Radiation Wavelength =    4.89247e-09 m
Cell Length = 0.400000 m
Phase Change Of Cell =     359.888 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 =   6.826e-06 T^2m^3
PI Of Cell =   6.826e-06 T^2m^3