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 27 October 2017   [12% He AC200-3392 litersQuench:28 October 2017 ]
[55% He AV600104 liters Quench:21 November 2017 ]
[25% He AM30031 liters Quench:11 December 2017 ]
[50% He DRX50021 liters Quench:20 February 2018 ]
[72% He AC200-3114 liters Quench:5 March 2018 ]
[75% He AV40028 liters Quench:14 April 2018 ]
Order 302 liters of liquid helium[71% He AV30012 liters Quench:2 July 2018 ]

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