Difference: Atf2LwAnalysisSoftware (1 vs. 4)

Revision 425 Apr 2014 - LaurieNevay

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META TOPICPARENT name="Atf2LwDaqComputing"

Analysis Software

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Setup

To set up the laserwire software please clone the git repository from:

https://bitbucket.org/stewartboogert/atf2laserwire.git

git clone https://bitbucket.org/stewartboogert/atf2laserwire.git .

The software directory and data directory will exist in different locations. Create a copy of the data locally.

TBC

 

General

import lwAna3

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META TOPICPARENT name="Atf2LwDaqComputing"

Analysis Software

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Laser Analysis

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Python scripts and LabView vi written for automatic analysis of m2 data. First use lwWinCam_Data_Extractor_v5.vi in run directory.

  • Measure M2
  • Run labview vi
  • run python script
  • use python script to select laser propagation for current fit model

LabView VI

Screen_Shot_2013-02-28_at_10.52.28.png

For typical usage, the files for the m2 should be recorded as ###.##mm.wcf - the stage position they were recorded at - irrespective of the number of significant digits. ie a stage position of 90mm should be name 090.00mm.wcf. This fixed filenaming makes both sorting of the data easier and dealing with the files as well as interpreting the name as the stage position. The distance from the lens to the stage zero position is also required.

  • Input these parameters at the top
  • Make sure the button 'use for m2' is selected

Before using this, a DataRay job (read: settings) file should be prepared. To prepare a job file open a wcf buffer in DataRay, set the settings you want -ie

  • Clip level1 = 13.5% of max
  • Clip level2 = 4 Sigma
  • Crosshairs snap to centroid
  • Don't show includsion area
  • Deselect auto-orient crosshairs
  • Drag cross hairs (at the top or bottom) to make the appropriate angle.

Now save the job file to the same directory as the wcf buffer files for the m2 measurement.

  • Note the analysis vi will look inside any subfolders and any wcf files will be included - so probably best to have a directory with only the m2 buffers in it.

  • The focal length of the lens normally used for m2 measurement at the ATF2 laser-wire is 1.677m at a wavelength of 532nm.
  • The angle of the crosshairs must be specified at the top of the vi for the settings file for python analysis - this unfortunately cannot be extracted automatically

  • Browse to the directory of the files and click 'current folder' at the bottom right of the browser window
  • Browse to the job file
  • Click play to run the vi

This will create a file in the directory of the buffer files - a simple tab delimited text file. Each row corresponds to the average of a file. Columns are named and have a column beside the parameter called '+-' for the standard deviation of the measurement.

If 'use for m2' is selected, the vi will use the lens settings, assume a wavelength of 532nm and write all these details down in a few parameter files in a new directory in

extlw/dat/msq/YYYYMMDD_HHMM/

Where the directory is the current time the vi was run. A settings file is created that contains the necessary information for the automatic fitting and analysis of the extracted data, which is also copied to this directory. From here either use the data yourself or proceed to the python scripts.

Python Scripts

These will automatically fit the m2 for both dimensions, scale the data and prepare a settings file for the overlap integral.

pylab
import lwAna3
lwAna3.Laser.DefaultAnalysis('../dat/msq/20130204_2257/')

repeat for different job files -> different directories

lwAna3.Fit.SelectLaserPropagationFile('../dat/msq/20130205_0530/fit_parameters_input.dat')
 

Overlap Integral

Option Function Arguments
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  • Set MYTITLE = - ATF2 laser wire project
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  • lwWinCam_Data_Extractor_v5.vi:

 
META FILEATTACHMENT attachment="analysis_class.png" attr="" comment="analysis class contents" date="1360927713" name="analysis_class.png" path="analysis_class.png" size="246676" stream="analysis_class.png" user="Public.LaurieNevay" version="1"
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META FILEATTACHMENT attachment="Screen_Shot_2013-02-28_at_10.52.28.png" attr="" comment="lwWinCam_Data_Extractor_v5.vi" date="1362016402" name="Screen_Shot_2013-02-28_at_10.52.28.png" path="Screen Shot 2013-02-28 at 10.52.28.png" size="163068" stream="Screen Shot 2013-02-28 at 10.52.28.png" user="Public.LaurieNevay" version="1"

Revision 215 Feb 2013 - LaurieNevay

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META TOPICPARENT name="Atf2LwDaqComputing"

Analysis Software

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  • small starting letter denotes object
  • using a question mark on a function will tell you about it and what it's arguments are
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analysis_class.png
 Typical usage:
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 a.X('QM14FF','a','y')
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Data Variables

Name Purpose
adcdata
atf2xpos
atf2ypos
atfcharge
atfext
atfip
cbpmx
cbpmy
chahor
chaver
cherenkov cherenkov
cherenkovcn cherenkov charge normalised
cherenkovcnbg calculated background
cherenkovcnbgs cherenkov charge normalised background subtracted
cherenkovcnbgslen cherenkov charge normalised background subtracted laser energy normalised
cherenkovcnbgslpn cherenkov charge normalised background subtracted laser photodiode normalised
ipanglex
ipanglexabs
ipangley
ipangleyabs
ipbsmdetec
ipbsmtotal
ipm1x
ipm1y
ipm2x
ipm2y
ipoffsetx
ipoffsetxabs
ipoffsety
ipoffsetyabs
laseren
laserenergy2
laserenraw
laserpd
manang
manver
mfb2ffampx
mfb2ffampxcn
mfb2ffampy
mfb2ffampycn
mfb2ffxpos
mfb2ffypos
otrlensz
otrm1x
otrm1y
phasev
refc1amp
refc1phase
sampindex
td21
td22
td23
td41
tekm1
tekm2
tekm3
tekm4
telescope
tempahall
templab
templaser
temppfn
temprack
wcm
wsdetector
wsdetectorcn
 

Laser Analysis

Overlap Integral

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META FILEATTACHMENT attachment="analysis_class.png" attr="" comment="analysis class contents" date="1360927713" name="analysis_class.png" path="analysis_class.png" size="246676" stream="analysis_class.png" user="Public.LaurieNevay" version="1"

Revision 115 Feb 2013 - LaurieNevay

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META TOPICPARENT name="Atf2LwDaqComputing"

Analysis Software

General

import lwAna3
a = lwAna3.Analysis(filepath) 

Here filepath is typically of the form

../dat/raw/20130201_0645_lws.dat

From here, the best thing to do is look inside the instance of the analysis class using tab complete. You will see a list of functions and objects.

  • Capital starting letter denotes a function
  • small starting letter denotes object
  • using a question mark on a function will tell you about it and what it's arguments are

Typical usage:

a.FilterBelowLimit('refc1amp',300)
a.FilterBelowLimit('cherenkov',5000)
a.FilterReset()
a.FilterBelowLimit('refc1amp',300)
a.FilterBelowLimit('cherenkov',1000)
a.X('chaver,'a')
a.Y('cherenkovcnbgs')
a.PlotXYErrorBar()
a.FitOI()
a.PlotXYFitData()

The X and Y methods pull out the data from the data structure for you and all the plotting functions use this x and y data. Any laser-wire data variable can be used for either as well as a bpm name in capital letters - ie QM14FF. The next optional argument is one of:

r or raw raw data shaped in axis0=positions, axis1=pulses
a or averaged averaged data - 1D
f or filtered flitered data - same dimensions as raw but is a masked array type
t or timeseries time series - 1D version of filtered without mask

  • time series still to be finished

If not specified, raw will be assumed For bpms, if used in the X function, the x dimension of the bpm is selected automagically. Otherwise you can specify the axis, but you then have to specify the data type ie

a.X('QM14FF','a','y')

Laser Analysis

Overlap Integral

Option Function Arguments
a SingleOI Empirical (dx,dy,sex,sey)
b SingleOI M2 (dx,dy,sex,sey,M2)
c OI Y Empirical (vector, dx, sex, sey)
d OI X Empirical (vector, dy, sex, sey)
e OI Y M2 (vector, dx, sex, sey)
f
g

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