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Size: 1094
Comment:
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Size: 1112
Comment:
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| Deletions are marked like this. | Additions are marked like this. |
| Line 12: | Line 12: |
| '''11h:''' Pressions stables. ZERO OF J1 IS -25mbar!!! | '''11h:''' Pressions stables. '''ZERO OF J1 IS -25mbar!!!''' |
| Line 18: | Line 18: |
| '''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. |
'''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.''' |
| Line 21: | Line 21: |
| '''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:''' 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.''' |
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.