Special Shift on 2023-Apr-12

Currently, only Liquefier A is running and will be automatically switched to "Idle" mode.
If you see the pressure PT503A goes above 8psi, then call Kenichi/Ishara/Dustin

• https://e906-gat1.fnal.gov/data-summary/e1039/target-par-preset/target-shift-20230409.php

Special Shift on 2023-Apr-10

Currently, only Liquefier A is running. So basically, we wanted it to keep producing LHe.
If you see the following behaviors on Dewar pressure (PT503) and cold head temperatures (TI502,504,506,508,510), and make sure the LQ-A produces liquid (level should keep going up).
Image AddedImage Added
then contact Ishara/Kenichi/Dustin as soon as possible.

Use this dedicated page for this monitoring: https://e906-gat1.fnal.gov/data-summary/e1039/target-par-preset/target-shift-20230409.php

• The Liq pressure (PT503) changes by >0.5 psi.
• The Liq inflow (FC501I) shows a scattered plot and most of those are zeros.
• The Liq outflow (FCI) changes on average by > 5 SLM.
• The cold-head temperatures (TI50*) go below 4 K or above 5 K.
  Note: TI506A has been showing larger values than 5K, so for that one let's use the upper limit as 7K; but the rest of cold-head temps. have to be in the range of 4K-5K.
• https://e906-gat1.fnal.gov/data-summary/e1039/target-par-preset/target-shift-20230409.php

Special Shift on 2023-Apr-09

The purpose is to make sure that the Liquefiers A & B are producing liquid, avoiding blocking or avoiding higher Dewar pressure.

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Shift Schedule

If the on-call person does not respond to phone call, try other ways (Discord, e-mail, WhatsApp) or Kenichi/Ishara/Dustin.

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