Re: Diagnosing and overcoming GigE camera freezes

["Henrique F. Simoes via Tech-talk" <tech-talk at aps.anl.gov>]

On Friday, May 23, 2025 5:08 AM, Heinz Junkes wrote:
> Hallo Henrique,
>
> We have also been using GigE cameras with our Free Elektron Laser for >10
> years (Prosilica, now Allied Vision). We have strong radiation when operating
> the system. This 'destroys' the camera very quickly when the camera is active
> (half-life of the cameras << 1 year).

Way quicker than I'd expect. In the Sirius accelerator, we have always tried to
keep them online, even though they aren't always in use; most of them are used
only in the machine startup. This means they are online most of the time since
2018. Maybe it is less radiation in our case?

> We can switch the power supply to the cameras on/off remotely via EPICS-PV
> (home-made boxes, connected to digital I/O Omron PLC ).
>
> We only use the cameras for startup ('threading the beam’).
>
> Continuous operation of the cameras has never been possible for us. We tried
> it in the first year. However, we felt we had to replace all the cameras at
> least once in this Year.

This is good to know. If we don't succeed in having this handled some other
way, letting them offline might be the way forward.

> We had also noticed the phenomenon of freezing. Our camera network is
> separate and powerful enough to operate all cameras simultaneously (approx.
> 20 cameras).
>
> Heinz

Thanks a lot, Heinz.

--
Henrique F. Simões
Control Software Group (SwC)
Brazilian Synchrotron Light Laboratory (LNLS)
Brazilian Center for Research in Energy and Materials (CNPEM)

Aviso Legal: Esta mensagem e seus anexos podem conter informações confidenciais e/ou de uso restrito. Observe atentamente seu conteúdo e considere eventual consulta ao remetente antes de copiá-la, divulgá-la ou distribuí-la. Se você recebeu esta mensagem por engano, por favor avise o remetente e apague-a imediatamente.

Disclaimer: This email and its attachments may contain confidential and/or privileged information. Observe its content carefully and consider possible querying to the sender before copying, disclosing or distributing it. If you have received this email by mistake, please notify the sender and delete it immediately.