[BTeam] Fw: current to Hall B?

[Michael Tiefenback]

fanning out Sebastian's response for everyone...
Michael

________________________________
From: Sebastian Kuhn <kuhn at jlab.org>
Sent: Thursday, August 27, 2020 08:48
To: Michael Tiefenback <tiefen at jlab.org>
Cc: Mohammad Hattawy <hattawy at jlab.org>; Eric Christy <christy at jlab.org>
Subject: Re: current to Hall B?

Dear Michael,

at this point, we will be starting to have to switch off detectors that may otherwise be damaged, and, yes, we have reduced the beam current to 180 nA (we could otherwise run with 250-300 nA!) which is the absolute maximum we can take right now without getting into dangerous territory as far as detector occupancies and dead time are concerned. It looks to me that we won’t be able to collect anywhere close to the expected data if we can’t fix this issue.

- Sebastian

On Aug 27, 2020, at 8:42 AM, Michael Tiefenback <tiefen at jlab.org<mailto:tiefen at jlab.org>> wrote:

Sebastian,
Is Hall B limited in current by beam quality?  We are trying to understand whether your luminosity is limited by beam quality.
Michael

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