SLAC Magnetic Measurements
Date: 04-24-2007
Time: 15:51:21
 
Coil Analysis
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Data File Header:
SLAC Magnetic Measurements
Date: 04-24-2007
Time: 15:44:31
Project: LCLS
Device Type: Undulator
Data Type: 
Serial Number: L143-112000-11
DATASET Number: 1
Tuning Stage: Fine Tuning
Run Number: 20
Measurement Type: Z Scans
Operator: YL
Comment: short coil measurement
Measurement Device x: 
Measurement Device y: SENTRON_441
Data File: s:\magdata\LCLS\Undulator\L143-112000-11\DATASET0001\Fine Tuning\Z Scans\Run 020\bscanz.dat
Temperature (C)
L143-112000-11:--> top_end 20.00 --> top_mid 20.02 --> top_start 20.07 --> bot 20.07 --> Air 20.05 --> granite 20.00 
Axes position (m) X:0.030450 Y:0.000488
Initial Hall Probe Zero Measurements:
Vx_0i = 0.001420 V
Vy_0i = -0.000832 V
Final Hall Probe Zero Measurements:
Vx_0f = 0.001434 V
Vy_0f = -0.000846 V
Offset Correction Voff = offset+index*increment
index = 0,1...21250
Vx:offset = 0.001420 V, increment = 6.368E-10 V
Vy:offset = -0.000832 V, increment = -6.499E-10 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

Coil Analysis Parameters:
Input file directory = s:\MagData\LCLS\Undulator\L143-112000-11\DATASET0001\Fine Tuning\Z Scans\Run 020\
Input file name = x+00000_y+000_bscanz.dat
Input file type = ZVXYBXYC
Electron gamma = 26688.610000
Electron energy = 13.639364 Gev
Nominal zm of Bx coil at device center = 2.058900 m
Nominal zm of By coil at device center = 2.058900 m
Nominal undulator period = 0.030000 m
Number of poles = 226.000000 m

Coil Measurement Overall Field Integrals:
Int Bx dz =  -3.1614e-005 Tm
Int Int Bx dz dz =  -7.1295e-005 Tm^2
Int By dz =   1.2313e-004 Tm
Int Int By dz dz =   2.3088e-004 Tm^2

Trajectory Exit Information:
X at exit =   5.0753e-006 m
X slope at exit =   2.7066e-006
Y at exit =   1.5672e-006 m
Y slope at exit =   6.9496e-007