[BTeam] SOF 5/19/24

[Michael Tiefenback]

I would strongly support keeping all multiple-pass linac offsets consistent across passes.  There is a linac multipass steering protocol I occasionally use to assess "straightness" of the linacs (deviation from "straight" thought to be due to long-term ground motion).  The various BPM readings for successive passes are fitted to instrumental offsets thought to be identical for all measurements from a given BPM can, as they use the same can and instrumentation chains.

Michael Tiefenback

________________________________
From: BTeam <bteam-bounces at jlab.org> on behalf of Jay Benesch via BTeam <bteam at jlab.org>
Sent: Tuesday, April 8, 2025 15:29
To: bteam at jlab.org <bteam at jlab.org>
Subject: [BTeam] SOF 5/19/24

Very strange assortment of zeroes and differences between higher and first linac passes.  The linac SOFs labeled NL and SL are the long pulse average values.  I am tempted to eliminate all the linac values except 1L and 2L.  Comments?

________________________________
From: BTeam <bteam-bounces at jlab.org> on behalf of Jay Benesch via BTeam <bteam at jlab.org>
Sent: Tuesday, April 8, 2025 15:29
To: bteam at jlab.org <bteam at jlab.org>
Subject: [BTeam] SOF 5/19/24

Very strange assortment of zeroes and differences between higher and first linac passes.  The linac SOFs labeled NL and SL are the long pulse average values.  I am tempted to eliminate all the linac values except 1L and 2L.  Comments?
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