SLAC Magnetic Measurements
Date: 01-23-2007
Time: 11:37:18
 
Planar Insertion Device Analysis
--------------------------------

Data File Header:
SLAC Magnetic Measurements
Date: 01-23-2007
Time: 11:21:51
Project: LCLS
Device Type: Undulator
Data Type: 
Serial Number: L143-112000-03
DATASET Number: 1
Tuning Stage: Rough Tuning
Run Number: 3
Measurement Type: Z Scans
Operator: AW
Comment: x-shim at 31 two turns closer(cw)
Measurement Device x: 
Measurement Device y: SENIS_24-06
Data File: c:\magdata\LCLS\Undulator\L143-112000-03\DATASET0001\Rough Tuning\Z Scans\Run 003\bscanz_dat.001
Temperature
L143-112000-03:--> start 20.13 --> mid 20.10 --> end 20.01 --> bot 20.09 --> gra 20.08 --> air 20.00 
Initial Hall Probe Zero Measurements:
Vx_0i = -0.000353 V
Vy_0i = -0.000428 V
Final Hall Probe Zero Measurements:
Vx_0f = -0.000303 V
Vy_0f = -0.000449 V
Offset Correction Voff = offset+index*increment
index = 0,1...19850
Vx:offset = -0.000353 V, increment = 2.518E-09 V
Vy:offset = -0.000428 V, increment = -1.034E-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 = C:\magdata\Lcls\Undulator\L143-112000-03\DATASET0001\Rough Tuning\Z Scans\Run 003\
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 = 1.274017 T, RMS = 0.003848 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 =   1.8677e-004 Tm
Int Int Bx dz dz =   4.0541e-004 Tm^2
Int By dz =   5.5127e-005 Tm
Int Int By dz dz =  -8.8353e-005 Tm^2

Trajectory Exit Information:
X at exit =  -1.9448e-006 m
X slope at exit =   1.2135e-006
Y at exit =  -8.9240e-006 m
Y slope at exit =  -4.1113e-006

Calculated Undulator Parameters:
Keff = 3.490692
Beff = 1.246165 T
Lambda_rad = 1.497635e-010 m

Phase Fluctuations:
Slippage vs Z At Peaks Fitted Slope =   4.99218e-009
Undulator Period = 0.030000 m
Radiation Wavelength =   1.49764e-010 m
Phase Error (From Slippage vs Z Fit Residuals): Ave = -0.000000 deg, RMS = 4.313870 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) =     853.599 deg, mod_360 =     133.599 deg
Phase Change Through Undulator (Poles Between End Poles) =   38992.568 deg, mod_360 =     112.568 deg
Phase Change Out Of Undulator (To Pole Before End Poles) =     854.340 deg, mod_360 =     134.340 deg
Phase Change Of Cell =   40700.508 deg, mod_360 =      20.508 deg