!!! Too high daily helium loss 10% at DRX500 !!!


Helium Level and Field Drift

 Spectrometer AC200-31 AC200-33 AM300   AV300    AV400    DRX500    AV600  

 Installation year

 1990 1988 1984 2017 2012 1997 2007

 Helium level
  (figure)
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 Field drift
  (figure)
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 X,Y,Z-Shims drift
  (figure)
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 Log files
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Helium refill date: Fri 23 August 2019   [6% He DRX50040 litersQuench:24 August 2019 ]
[71% He AV60067 liters Quench:18 October 2019 ]
[60% He AC200-3120 liters Quench:3 December 2019 ]
[58% He AM30017 liters Quench:6 December 2019 ]
[87% He AV40014 liters Quench:27 March 2020 ]
[66% He AV30037 liters Quench:12 May 2020 ]
Order 207 liters of liquid helium[89% He AC200-3312 liters Quench:4 October 2020 ]

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