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["Tribedy, Prithwish" <ptribedy AT bnl.gov>]

Hi Gerard,

   Yes, we absolutely had to restart all the iocs for three MPOD crates. Otherwise the HV numbers were all over the place. Some channels were being set to 20 V instead of 140 V. I don’t know why this happened but it did.

After the ioc restart things were back and we had a smooth running.

I’m also thinking of the possibility of adding NPS to the MPOD power. Can Wyane and Tim confirm if this is possible?

Best,

Prithwish 

Prithwish Tribedy

Physics Department, Brookhaven National Laboratory

Upton, NY 11973, USA

Phone: 631-344-8904, 631-344-3853

E-mail: ptribedy AT bnl.gov

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From: Visser, Gerard <gvisser AT indiana.edu>
Sent: Wednesday, August 21, 2024 8:19 AM
To: tlusty AT gmail.com <tlusty AT gmail.com>; Tribedy, Prithwish <ptribedy AT bnl.gov>
Cc: Betts, Wayne <wbetts AT bnl.gov>; L Star-fst <star-fst-l AT lists.bnl.gov>
Subject: question - IOC's and power cycling

 

hi all,

      I'm glad the FST issue last night was easily resolved, although of course we might still want to think about adding an NPS?

      But I'm confused to hear that you have to restart IOC after power cycling the crate. Is that really so? What about after a network interruption? (If not, how is power cycling really different?)

      If it is really the case, does this apply to FCS MPOD too? I never heard mention of this before (for any of our MPOD-using detectors).

      Sincerely,

           Gerard