SLAC Magnetic Measurements
Date: 01-24-2007
Time: 10:30:55
 
Planar Insertion Device Analysis
--------------------------------

Data File Header:
SLAC Magnetic Measurements
Date: 01-24-2007
Time: 10:04:31
Project: LCLS
Device Type: Undulator
Data Type: 
Serial Number: L143-112000-03
DATASET Number: 1
Tuning Stage: Rough Tuning
Run Number: 24
Measurement Type: Z Scans
Operator: AW
Comment: Moved(4-leg) y-shim  from100 to 94.
Measurement Device x: 
Measurement Device y: SENIS_24-06
Data File: c:\magdata\LCLS\Undulator\L143-112000-03\DATASET0001\Rough Tuning\Z Scans\Run 024\bscanz_dat.001
Temperature (C)
L143-112000-03:--> start 20.11 --> mid 20.13 --> end 20.02 --> bot 20.11 --> gra 20.08 --> air 19.96 
Axes position (m) X:0.028282 Y:0.000388
Initial Hall Probe Zero Measurements:
Vx_0i = -0.000426 V
Vy_0i = -0.000440 V
Final Hall Probe Zero Measurements:
Vx_0f = -0.000435 V
Vy_0f = -0.000443 V
Offset Correction Voff = offset+index*increment
index = 0,1...19850
Vx:offset = -0.000426 V, increment = -4.444E-10 V
Vy:offset = -0.000440 V, increment = -1.478E-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 = C:\magdata\Lcls\Undulator\L143-112000-03\DATASET0001\Rough Tuning\Z Scans\Run 024\
Input file name = bscanz_dat.001
Input file type = SLAC_VXVYBXBYVSZ
Correction required = 0
Correction file = c:\Insertion Device Analysis\Earth Field Correction\earth_field_corr.dat
Correction file type = CORR_BXBYVSZ
Electron gamma = 26652.520000
Electron energy = 13.620925 Gev
Nominal undulator period = 0.030000 m
Nominal K value = 3.491296
Nominal radiation wavelength = 1.500000e-010 m
Number of undulator poles = 226
Number of end poles (used in analysis) = 4
Cell length = 3.656000 m

Peak And Zero Field Summary:
Number of Poles = 226
Number of End Poles (excluded in statistics) = 4
Peak Fields: Ave = 1.274026 T, RMS = 0.003813 T
Peak Field Spacing: Ave = 0.015000 m, RMS = 0.000024 m
Zero Field Spacing: Ave = 0.015000 m, RMS = 0.000035 m
Average Undulator Period = 0.030000 m

Hall Probe Overall Field Integrals:
Int Bx dz =   4.7354e-005 Tm
Int Int Bx dz dz =   1.3136e-004 Tm^2
Int By dz =   2.5238e-005 Tm
Int Int By dz dz =   1.8996e-005 Tm^2

Trajectory Exit Information:
X at exit =   4.1814e-007 m
X slope at exit =   5.5555e-007
Y at exit =  -2.8916e-006 m
Y slope at exit =  -1.0424e-006

Calculated Undulator Parameters:
Keff = 3.489202
Beff = 1.245634 T
Lambda_rad = 1.496536e-010 m

Phase Fluctuations:
Slippage vs Z At Peaks Fitted Slope =   4.98852e-009
Undulator Period = 0.030000 m
Radiation Wavelength =   1.49654e-010 m
Phase Error (From Slippage vs Z Fit Residuals): Ave = -0.000000 deg, RMS = 3.278091 deg

Phase Relative To Nominal Radiation Wave:
Nominal Radiation Wavelength =   1.50000e-010 m
Cell Length = 3.656000 m
Number Of End Poles = 4
Phase Change Into Undulator (To Pole After End Poles) =     853.688 deg, mod_360 =     133.688 deg
Phase Change Through Undulator (Poles Between End Poles) =   38965.342 deg, mod_360 =      85.342 deg
Phase Change Out Of Undulator (To Pole Before End Poles) =     849.177 deg, mod_360 =     129.177 deg
Phase Change Of Cell =   40668.208 deg, mod_360 =     348.208 deg