Experimental Physics and
Industrial Control System

Mark Rivers <[email protected]> · Thu, 27 Sep 2012 14:46:30 +0000

The EPICS sscan record is designed for doing exactly this type of thing.  I will collect data into arrays in the record, and in conjunction with the saveData utility in the sscan module will write the values to a portable binary disk file.

Mark

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Kai Stein
Sent: Thursday, September 27, 2012 9:44 AM
To: [email protected]
Subject: How can I collect data values

Hello,

I'm working on an automatic data analysis of electron beam (emittance 
measurement with a wire scanner and a magnetic lens) with EPICS.
I get values from the hardware (self build measurement cards). The 
device support put the values into a longin records (this part is fixed, 
because it is already used for other applications).
I need to gather the values (will be a position and a corresponding 
current) for a certain amount of time (approximately 1000 to 10000 
values)  and then hand it over to a subroutine, to perform the analysis 
(like fitting a curve onto the data). It should all run on a debian machine.

My problem is to collect the data with EPICS. I thought about collecting 
them somehow in a waveform record, but i have no idea, how to do this by 
using other records instead of the device support.

Best regards,

Kai Stein

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System