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["Visser, Gerard" <gvisser AT indiana.edu>]

Dear Ziyue,

     Thanks, this sounds good. (I didn't look at plots right now, sorry, but I trust you see the correct effects.)

    However I am concerned by the statement " New APVs need adjustment found, which is most likely caused by the "FST not off during beam dump" incident yesterday":

• It should be basically impossible to have any lasting effect of this sort from any beam incident. I'd expect if there is a lasting effect, it would be in the nature of total failure or of an increase in noise level.
• On the other hand though, the hardware might at any time get into a "upset" condition, where some internal states are incorrect and this might (not unlikely) be caused by beam conditions. It would go back to normal upon a power cycling of everything.
• ==> If you think something shifted or is acting abnormally, power cycle!
• If you readjusted something to make it normal instead, I suggest power cycle and check things, and if necessary make adjustments (maybe contrary to prior adjustments.

Sincerely,

        Gerard

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From: Star-fst-l <star-fst-l-bounces AT lists.bnl.gov> on behalf of Ziyue Zhang <zzhan70 AT uic.edu>
Sent: Monday, May 29, 2023 11:40 AM
To: Star-fst L <star-fst-l AT lists.bnl.gov>
Subject: [Star-fst-l] FST Latency Adjusted

 

Dear all,

The FST APV latency has been adjusted. Details can be found here.

Best regards, 

Ziyue