[Halld-controls] Fw: Power down in HallD and DAQ operations

[Hovanes Egiyan]

FYI
________________________________
From: Timothy Whitlatch <whitey at jlab.org>
Sent: Monday, February 28, 2022 7:53 AM
To: Benedikt Zihlmann <zihlmann at jlab.org>
Cc: Mark-Macrae Dalton <dalton at jlab.org>; Sergey Furletov <furletov at jlab.org>; Lubomir Pentchev <pentchev at jlab.org>; Naomi Jarvis <nsj at cmu.edu>; Elton Smith <elton at jlab.org>; Mark Stevens <stevensm at jlab.org>; Thomas Britton <tbritton at jlab.org>; Hovanes Egiyan <hovanes at jlab.org>; Alexander Somov <somov at jlab.org>; Eugene Chudakov <gen at jlab.org>
Subject: Re: Power down in HallD and DAQ operations

Hi All,

As far as I know, the outage is still scheduled for tomorrow.

All power in the hall and counting house will be cycled for a short period to check breaker panels. Equipment on the UPS will still be powered as there is an automatic switchover.

Mark will verify the timing tomorrow.

Cheers,


Tim Whitlatch

Hall D Engineer

Jefferson Lab

757-269-5087

________________________________
From: zihlmann <zihlmann at jlab.org>
Sent: Monday, February 21, 2022 2:18 PM
To: Benedikt Zihlmann <zihlmann at jlab.org>
Cc: Mark-Macrae Dalton <dalton at jlab.org>; Sergey Furletov <furletov at jlab.org>; Lubomir Pentchev <pentchev at jlab.org>; Naomi Jarvis <nsj at cmu.edu>; Elton Smith <elton at jlab.org>; Mark Stevens <stevensm at jlab.org>; Timothy Whitlatch <whitey at jlab.org>; Thomas Britton <tbritton at jlab.org>; Hovanes Egiyan <hovanes at jlab.org>; Alexander Somov <somov at jlab.org>; Eugene Chudakov <gen at jlab.org>; Timothy Whitlatch <whitey at jlab.org>
Subject: Power down in HallD and DAQ operations

Hi Everyone,

Important information:
Tim mentioned that on March 1st (Tuesday next week) there will be a power outage in HallD that will last
for several hours (to also upgrade UPS power capabilities?).
This means all crates need to be turned off on Monday and probably also the computers to make sure we
keep potential damage at a minimum.

Who is around to help turn off equipment on Monday?
Sergey, can you take care of the DAQ computers?
Hovanes, are there some slow control related equipment that needs to be turned off in a controlled manner?
Mark D., BCAL chillers?
Lubomir, FDC gas system, chillers?
Beni, VXS, VME, HV, LV crates?

My understanding is that all power is down. Tim, please comment if I misinterpret this power off.

Some of the equipment like the gas system for the wire chambers need to be checked immediately after
the power is restored to make sure the wire chambers get flushed with the least amount of interruption.

I propose that on Wednesday March 2nd we turn all the need equipment back on that is required to take
cosmic data and start up the DAQ to take this data uninterrupted for the following two weeks.


cheers,
Beni



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