[BTeam] [Mcc_ops] 7S01 BLM trips

[Lester Richardson]

Thanks, that's the plan...
________________________________
From: Jay Benesch <benesch at jlab.org>
Sent: Monday, October 25, 2021 1:23:49 PM
To: BTeam <bteam at jlab.org>; mcc_ops at jlab.org <mcc_ops at jlab.org>
Subject: [Mcc_ops] 7S01 BLM trips

Colleagues,

I did a moderately detailed rad survey of the NE spreader, staying
outside the rope around MYBBS06.  I provide my conclusions in
https://logbooks.jlab.org/entry/3932262

To summarize: beam is bent upwards less than design in the common
dipoles.  The 7S ZA and 9S YR are at design.  MYBBS04 was at design
before it shorted and MYBBS06 was very hot.  The 7S01 BLM is above the
entrance to MYBBS06 so the trips were appropriate.

Since we don't want to mess with the BCOMs, I suggest steering to
address the 7S01 BLM trips be confined to the 9S YR and 7S ZA, in that
order because the beam pipe is cool entering the YR and hot exiting it.

YMMV

Jay
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