Heike R2014-00 R68

First RUN since more than one year!!!

TIME TABLE

• XX.XX.2014: FIRST DAY - CLOSING, CLEANING & PRE-COOLING
  • Closing cryostat and dewar. Cleaning/pumping lines.
  • Exchange gas p_VC~3mbar.
  • : Pre-cooling with 50l LN.

• XX.XX.2014 : SECOND DAY - LIQUID HELIUM
  • XX:XX : Status = T_Dewar=??K, T_Magn,l=???K, p_VC=??mbar
  • XX:XX : Start filling LHe
  • XX:XX : During 3rd can (after ~ 230 LHe in total): T_RuOx=4.6K, p_VC=3.3*10^-3mbar
  • XX:XX : Pump VC
  • XX:XX : He 100%, LHe in total ~????l
  • XX:XX : Stop pumping VC, p_VC=??*10^-5mbar

• XX.XX.2014: THIRD DAY - MIX IN
  • XX:XX : Status = p_VC=??*10^-5mbar, T_MC,RuOx=???, T_MC.Si=??K
  • XX:XX : Start condensing mix. T₁=683mbar, T₂=695mbar, T₃=0mbar, p₄=973mbar.
  • XX:XX : Close Heat-Switch (I_PCS#4=1.5A, I_H=0.5mA) @ T_RuOx=600mK
  • XX:XX : I_Still=3.0mA, T_RuOx=580mK
  • XX:XX : All mix is in, all pumps are running.

• XX.XX.XX: - RAMP MAGNET

• XX.XX.XX: - DEMAG

• XX.XX.XX: MIX OUT
  • XX:XX : Start filling mix into the tanks.