Ion Current Measurements
===================================================================
Updated: 16-Jun-2008, Roger Ruber


Problem Solving
===============
- Oasis Viewer does not want to save settings
  The Oasis Viewer needs to have received at least one trigger 
  before the settings can be saved.

- Oasis Viewer looses contact to channels
  Verify that the "time to live" is set to indefinetely.

- LabVIEW does not read out any channels
  Verify that the number of points to read in LabVIEW equals the
  Oasis Viewer setting in "channel options"



NICE/Windows 
============
- log on as "CTF3log"

- start OASIS viewer: desktop folder "30GHz Conditioning"

- start LabVIEW: G:\Experiments\CTF3\Uppsala\Ion_Current\Labview
- data storage:  G:\Experiments\CTF3\Uppsala\Ion_Current\Data



AFS/Linux
=========
- log on as "ctf3op"

- start OASIS viewer: left click on desktop for menu

- start LabVIEW: /local/home/ctf3op/builds/icMain <version-number>
- data storage:  /local/data



Oasis Viewer
============
load channel settings:
-> menu General -> connect global -> CTF3 -> Ion Current Measurement
 - time base = 5 us/div
 - amplitude = 5 mV/div; 20 mV/div (channel 15)
 - trigger channel = CK.Scope-Ext-Trig-TS
 - trigger level = -200 mV
 - trigger slope = +
 - trigger position = L
 - trigger delay = -5 us

-> scope 1 -> channel 1/2 
--> channel options
    - number of points = 1000 (same as LabView)
--> time to live
    - live indefinitely  <========================== IMPORTANT !!!



LabVIEW + ASCII Save
====================
select dfs\experiments\ctf3\uppsala\ion_current\labview\ASCII_save

icMain-v3
---------
save single event on (software) trigger
- select run number
- select main data folder (to save data)
- select trigger level (on channel 13)

icMain-v4
---------
save cyclic buffer with 5 events before + 5 after the trigger
- select run number
- select main data folder (to save data)
- select trigger channel, type and level

the cyclic buffer length and channel settings (on/off) are defined in the
main LabView VI programme: press <CTRL>-E

icMain-v5
---------
CK.COND30.PulseSummaryAcquisition is saved to xxxxxx-RFpulse.txt

http://oraweb.cern.ch/pls/abc/w3fesa.properties?class=RFCond30&vers=1

1) acqStamp (time stamp)
2) breakdown (boolean)
3) accGradPeak
4) chIncStrL50
5) chIncStrPMax
6) chIncStrU
7) chReflStrL50
8) chReflStrPMax
9) chReflStrU
10) chTranStrL50
11) chTranStrPMax
12) chTranStrU




LabView + MATLAB Save
=====================
select dfs\experiments\ctf3\uppsala\Ion current Labview files

IonCurrentMeasurement_Ch13_Ch14.vi
----------------------------------
- select filename, typical the date + "-": 20070727-
- breakdown limit = -0.005 or -0.01
  triggers on channel 14

-> RUN


NB: do NOT close the MATLAB command prompt!
    It is required to save the data in MATLAB binary format.


Data Analysis
-------------
- open the data file in MATLAB
>> figure,plot(Channel14)
>> plot(Channel13)

- to export data to an ASCII file
>> fid = fopen('data.txt','wt');
>> fprintf(fid,'%10.4f %10.4f\n', Channel13, Channel14);
>> fclose(fid)



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