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Size: 1112
Comment:
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Size: 1580
Comment:
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| Deletions are marked like this. | Additions are marked like this. |
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| == STATUS == | '''STATUS''' |
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'''15h30m:''' Lowering to 870mbar. Keep the same during the night. |
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| '''23h10m:''' T4K=160K. Tstill=125K. Lowering the flux at 630mbar for the night. '''January 14th 2014''': Cooling down still going on. '''STATUS''' '''07h00m:''' T4K=25K. Tstill=30K. Lowering the flux at 340mbar. '''09h15m:''' Close ev5. '''10h30m:''' Coax connected, mppsync connected, computers on (archeops 8-9-10) in the control room '''11h00m:''' Condensation starts. |
January 14th 2014: Andrea Catalano come to the 30m to turn on the NIKA cryostat and checking the cool down remotely controlled from Grenoble (Alessandro Monfardini and Martino Calvo).
STATUS
9h30: Reboot of the PC NIKA and change the VNC forwarding on the router.
10h: Pumped the trap (J5=46mbar). Pumped the dilution circuit (until Jpi=3e-2mbar).
11h: Pressions stables. ZERO OF J1 IS -25mbar!!!
12h: Connected the leak detector. Residual pressure in the cryostat 6.6mbar.
12h15m: Optical alignment of the cryostat started.
12h30m: Impedance 18mbar/min at 3bar. It is maybe less w.r.t. the last run cryo (not clear from the old files). WE CONTINUE.
13h: Leak test: OK, in the 1e-9 range.Pumped ev18 for 15 minutes. It was well empty in any case. REMEMBER NOT TO TOUCH ev18 ANYMORE.
13h: Optical alignment OK.
14h: GREEN LIGHT for switching on the Pulse Tube. Mixture circulated for two hours at 3bar.
14h30m: Pulse Tube on with 900mbar.
15h30m: Lowering to 870mbar. Keep the same during the night.
23h10m: T4K=160K. Tstill=125K. Lowering the flux at 630mbar for the night.
January 14th 2014: Cooling down still going on.
STATUS
07h00m: T4K=25K. Tstill=30K. Lowering the flux at 340mbar.
09h15m: Close ev5.
10h30m: Coax connected, mppsync connected, computers on (archeops 8-9-10) in the control room
11h00m: Condensation starts.