Re: Scanning 101

["Jemian, Pete R. via Tech-talk" <tech-talk@aps.anl.gov>]

On 2019-05-23 3:12 AM, Hinko Kocevar via Tech-talk wrote:
> Imagine an EPICS developer with no experience in working with (coordinated) scanning application.
> 
> The sub-units, of the system in need of scanning feature, include timing system with precision triggering and timestamping, 1 to several axes of motion, control of HV bias and 1 to several channels of data acquisition. You can assume that the (low-level) EPICS modules supporting the hardware are under my control already, I'm interested in orchestrating the scan using above constituents.
> 
> What would be preferred approach to tackle this subject with EPICS in 2019?
> 
> TIA,
> Hinko
> 

The Bluesky data collection framework from NSLS-II/BNL can satisfy your 
requirements except, possibly, for the precision triggering depending on 
the order of magnitude of that precision.  Bluesky is python 3.6+ 
software running as an EPICS client with support of:

* orchestration of scans of 1-D and higher dimensionality
* timestamps for all acquired data
* one or more streams of event data
* support for the EPICS motor record and area detector
* database for scan data

documentation: https://blueskyproject.io/bluesky/
source: https://github.com/bluesky

Regards,
    Pete

-- 
----------------------------------------------------------
Pete R. Jemian, Ph.D.                 <jemian@anl.gov>
Beam line Controls and Data Acquisition (BC, aka BCDA)
Advanced Photon Source,    Argonne National Laboratory
Argonne, IL  60439                    630 - 252 - 3189
-----------------------------------------------------------
       Education is the one thing for which people
          are willing to pay yet not receive.
-----------------------------------------------------------