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Subject: RE: Opinion on timing system for synchrotron beamlines
From: Alessandro Drago <[email protected]>
To: Mark Rivers <[email protected]>
Cc: 'Márcio Paduan Donadio' <[email protected]>, [email protected]
Date: Thu, 10 Nov 2016 09:43:14 +0100
The same situation at DAFNE, we use fiducial (revolution ring clock) and
injection trigger,

Alessandro

Il 2016-11-10 01:26 Mark Rivers ha scritto:
At the APS I would say that as far as I know no beamlines rely on
accurate timestamps from the accelerator timing system.   The
timestamps that the beamlines are using are based on NTP timing, so
are probably good to a few ms?

What the beamlines do use are hardware timing signals that allow
experiments to synchronize to the ring electron bunch structure.
There is one signal that is a pulse at the ring frequency (orbital
period) and another that gives a pulse for each bunch in the ring.
These are used to synchronize lasers, fast shutters, fast detectors,
etc.

Mark


-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Márcio Paduan
Donadio
Sent: Wednesday, November 09, 2016 1:27 PM
To: [email protected]
Cc: Márcio Paduan Donadio
Subject: Opinion on timing system for synchrotron beamlines


     I'd like to know your experience regarding integration of the
accelerator timing system with the beamlines:
     - Which accelerator events are useful for the beamlines' control
system.
     - Do the beamlines use a global and very precise timestamp sent
from the accelerator timing system? What is the time precision?
     - Do you think that a PTP system is sufficient for timestamping
experiments in beamlines?
     - What is the EPICS role regarding such a timing system?

     Thank you,

Replies:
Re: Opinion on timing system for synchrotron beamlines Timo Korhonen
References:
Opinion on timing system for synchrotron beamlines Márcio Paduan Donadio
RE: Opinion on timing system for synchrotron beamlines Mark Rivers

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