SLAC Magnetic Measurements
Date: 02-27-2007
Time: 20:46:37
 
Planar Insertion Device Analysis
--------------------------------

Data File Header:
SLAC Magnetic Measurements
Date: 02-27-2007
Time: 20:37:49
Project: LCLS
Device Type: Undulator
Data Type: 
Serial Number: L143-112000-17
DATASET Number: 1
Tuning Stage: Rough Tuning
Run Number: 62
Measurement Type: Z Scans
Operator: AW
Comment: X=0.027845  y=0.000144 (36mu m higher than y-ctr)) Installed x-shim 0.2 in at 82
Measurement Device x: 
Measurement Device y: SENIS_24-06
Data File: s:\magdata\LCLS\Undulator\L143-112000-17\DATASET0001\Rough Tuning\Z Scans\Run 062\bscanz_dat.001
Temperature (C)
L143-112000-17:--> start 20.29 --> mid 20.29 --> end 20.13 --> bot 20.26 --> gra 20.17 --> air 20.08 
Axes position (m) X:0.027845 Y:0.000144
Initial Hall Probe Zero Measurements:
Vx_0i = -0.000388 V
Vy_0i = -0.000405 V
Final Hall Probe Zero Measurements:
Vx_0f = -0.000450 V
Vy_0f = -0.000399 V
Offset Correction Voff = offset+index*increment
index = 0,1...19850
Vx:offset = -0.000388 V, increment = -3.112E-09 V
Vy:offset = -0.000405 V, increment = 2.957E-10 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\L143-112000-17\DATASET0001\Rough Tuning\Z Scans\Run 062\
Input file name = bscanz_dat.001
Input file type = ZVXYBXYH
Correction required = 1
Correction file = S:\Magdata\Earth Field Correction\earth_field_corr.dat
Correction file type = CORR_ZBXY
Electron gamma = 26690.650000
Electron energy = 13.638901 Gev
Nominal undulator period = 0.030000 m
Nominal K value = 3.499557
Nominal radiation wavelength = 1.499903e-010 m
Number of undulator poles = 226
Number of end poles (used in analysis) = 4
Cell length = 3.656000 m

Field Correction:
The file
S:\Magdata\Earth Field Correction\earth_field_corr.dat
was used to correct Bx and By.

Peak And Zero Field Summary:
Number of Poles = 226
Number of End Poles (excluded in statistics) = 4
Peak Fields: Ave = 1.278837 T, RMS = 0.005558 T
Peak Field Spacing: Ave = 0.015001 m, RMS = 0.000024 m
Zero Field Spacing: Ave = 0.015001 m, RMS = 0.000033 m
Average Undulator Period = 0.030002 m

Hall Probe Overall Field Integrals:
Int Bx dz =   2.9538e-005 Tm
Int Int Bx dz dz =   3.5143e-005 Tm^2
Int By dz =  -1.2090e-005 Tm
Int Int By dz dz =  -1.2682e-004 Tm^2

Trajectory Exit Information:
X at exit =  -2.7877e-006 m
X slope at exit =  -2.6575e-007
Y at exit =  -7.7247e-007 m
Y slope at exit =  -6.4926e-007

Calculated Undulator Parameters:
Keff = 3.503121
Beff = 1.250500 T
Lambda_rad = 1.502634e-010 m

Phase Fluctuations:
Slippage vs Z At Peaks Fitted Slope =   5.00844e-009
Undulator Period = 0.030002 m
Radiation Wavelength =   1.50263e-010 m
Phase Error (From Slippage vs Z Fit Residuals): Ave = -0.000000 deg, RMS = 10.779718 deg

Phase Relative To Nominal Radiation Wave:
Nominal Radiation Wavelength =   1.49990e-010 m
Cell Length = 3.656000 m
Number Of End Poles = 4
Phase Change Into Undulator (To Pole After End Poles) =     807.597 deg, mod_360 =      87.597 deg
Phase Change Through Undulator (Poles Between End Poles) =   39159.539 deg, mod_360 =     279.539 deg
Phase Change Out Of Undulator (To Pole Before End Poles) =     797.789 deg, mod_360 =      77.789 deg
Phase Change Of Cell =   40764.925 deg
Nominal Phase Change Of Cell =   40680.000 deg
Phase Error Of Cell =      84.925 deg