SLAC Magnetic Measurements
Date: 06-20-2007
Time: 10:18:18
 
Planar Insertion Device Analysis
--------------------------------

Data File Header:
SLAC Magnetic Measurements
Date: 06-20-2007
Time: 10:03:57
Project: LCLS
Device Type: Undulator
Data Type: 
Serial Number: L143-112000-12
DATASET Number: 1
Tuning Stage: Rough Tuning
Run Number: 92
Measurement Type: Z Scans
Operator: AW
Comment: x=0.027491 y=0.00027483 Mu-metal Shield is on
Measurement Device x: 
Measurement Device y: SENIS_24-06
Data File: s:\magdata\LCLS\Undulator\L143-112000-12\DATASET0001\Rough Tuning\Z Scans\Run 092\bscanz.dat
Temperature (C)
L143-112000-12:--> top_start 20.04 --> top_mid 20.03 --> top_end 19.95 --> bot 20.03 --> granite 20.00 --> Air 19.91 
Axes position (m) X:0.027491 Y:0.000275
Initial Hall Probe Zero Measurements:
Vx_0i = -0.000482 V
Vy_0i = -0.000463 V
Final Hall Probe Zero Measurements:
Vx_0f = -0.000485 V
Vy_0f = -0.000510 V
Offset Correction Voff = offset+index*increment
index = 0,1...19850
Vx:offset = -0.000482 V, increment = -1.481E-10 V
Vy:offset = -0.000463 V, increment = -2.363E-09 V
Hall Probe Calibration File:
Y: C:\CVI\current_calib\SENIS_24-06\SENIS_24-06_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\L143-112000-12\DATASET0001\Rough Tuning\Z Scans\Run 092\
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 = S:\Magdata\Earth Field Correction\earth_field_corr.dat
Correction Bxy additive file type = CORR_ZBXY
Electron gamma = 26644.120000
Electron energy = 13.615120 Gev
Nominal undulator period = 0.030000 m
Nominal K value = 3.489476
Nominal radiation wavelength = 1.497703e-010 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
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

Peak And Zero Field Summary:
Number of Poles = 226
Number of End Poles (excluded in statistics) = 4
Peak Fields: Ave = 1.272260 T, RMS = 0.006336 T
Peak Field Spacing: Ave = 0.015002 m, RMS = 0.000035 m
Zero Field Spacing: Ave = 0.015003 m, RMS = 0.000043 m
Average Undulator Period = 0.030005 m

Hall Probe Overall Field Integrals:
Int Bx dz =   2.7783e-005 Tm
Int Int Bx dz dz =   1.0398e-004 Tm^2
Int By dz =   5.3489e-005 Tm
Int Int By dz dz =   1.3805e-004 Tm^2

Trajectory Exit Information:
X at exit =   3.0397e-006 m
X slope at exit =   1.1778e-006
Y at exit =  -2.2895e-006 m
Y slope at exit =  -6.1176e-007

Calculated Undulator Parameters:
Keff = 3.489877
Beff = 1.245638 T
Lambda_rad = 1.498262e-010 m

Phase Fluctuations:
Slippage vs Z At Peaks Fitted Slope =   4.99333e-009
Undulator Period = 0.030005 m
Radiation Wavelength =   1.49826e-010 m
Phase Error (From Slippage vs Z Fit Residuals): Ave = 0.000000 deg, RMS = 4.262689 deg

Phase Relative To Nominal Radiation Wave:
Nominal Radiation Wavelength =   1.49770e-010 m
Cell Length = 3.656000 m
Number Of End Poles = 4
Phase Change Into Undulator (To Pole After End Poles) =     816.176 deg, mod_360 =      96.176 deg
Phase Change Through Undulator (Poles Between End Poles) =   39062.527 deg, mod_360 =     182.527 deg
Phase Change Out Of Undulator (To Pole Before End Poles) =     819.483 deg, mod_360 =      99.483 deg
Phase Change Of Cell =   40698.187 deg
Nominal Phase Change Of Cell =   40680.000 deg
Phase Error Of Cell =      18.187 deg