Heike R2012-02 R66: Difference between revisions
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** 08:00 : Status = T<sub>Dewar</sub>=78K, T<sub>MC,Si</sub>=80K, T<sub>Magn,u</sub>=81K, p<sub>VC</sub>=0.67mbar, connect 3<sup>rd</sup> can LHe |
** 08:00 : Status = T<sub>Dewar</sub>=78K, T<sub>MC,Si</sub>=80K, T<sub>Magn,u</sub>=81K, p<sub>VC</sub>=0.67mbar, connect 3<sup>rd</sup> can LHe |
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** 11:45 : T<sub>MC,Si</sub>=4K, start pumping vacuum vessel. |
** 11:45 : T<sub>MC,Si</sub>=4K, start pumping vacuum vessel. |
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** 14:00 : Start condensing mix. T<sub>1</sub>=688mbar, T<sub>2</sub>=700mbar, T<sub>3</sub>=0mbar, p<sub>4</sub>=774mbar. |
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** 14:10 : 100% He-Level. Total consumption to reach this level: '''428.2 litres''' (Five cans) . |
** 14:10 : 100% He-Level. Total consumption to reach this level: '''428.2 litres''' (Five cans) . |
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** 16:20 : Close Heat-Switch (I<sub>PCS#4</sub>=1.5A, I<sub>H</sub>=0.5mA) @ T<sub>RuOx</sub>=700mK |
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Revision as of 11:02, 3 March 2012
NEW
- Pt-NMR read-out via two s.s. mini-coax. Signal Coil is connected with port #1 and #3.
Time Table
- 28.02.2012: FIRST DAY - CLOSING, CLEANING & PRECOOLING
- Closing cyrostat and dewar. Cleaning/pumping lines.
- Precooling with 50l LN.
- 29.02.2012: SECOND DAY - LIQUID HELIUM
- 07:50 : Status = TDewar=207K, TMC,Si=216K, TMagn,l=217K, pVC=2.15mbar
- 09:55 : Start filling LHe
- 17:00 : Status after two cans (188.8l LHe) =TMC,Si=80K, TMagn,u=50K, pVC=0.45mbar
- 01.03.2012: THIRD DAY
- 08:00 : Status = TDewar=78K, TMC,Si=80K, TMagn,u=81K, pVC=0.67mbar, connect 3rd can LHe
- 11:45 : TMC,Si=4K, start pumping vacuum vessel.
- 14:00 : Start condensing mix. T1=688mbar, T2=700mbar, T3=0mbar, p4=774mbar.
- 14:10 : 100% He-Level. Total consumption to reach this level: 428.2 litres (Five cans) .
- 16:20 : Close Heat-Switch (IPCS#4=1.5A, IH=0.5mA) @ TRuOx=700mK
