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Revision 11 as of 2014-09-30 18:02:59
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'''8h30 UT:''' Andrea come to the 30m to cool down the NIKA cryostat and to prepare all the facilities for the polarisation run. '''8h30 UT:''' Andrea arrives to the 30m to cool down the NIKA cryostat and to prepare all the facilities for the polarisation run.
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'''10h00 UT:''' Pumped the dilution circuit (until Jpi=2.2e-2mbar). Pumped the trap. '''10h00 UT:''' Pumped the dilution circuit (until Jpi=2.2x10e-2mbar). Pumped the trap.
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'''14h45 UT.''' Second Leak test. From 9.3x10e-9 to 2.5x10e-8. WE CONTINUE! '''15h45 UT.''' Second Leak test. From 9.3x10e-9 to 2.5x10e-8. LET'S CONTINUE!
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'''15h00 UT.''' Pulse Tube on. Low pressure and High pressure OK. Mixture circulates at 2.95bar (J4) and 950mbar (J2 with preref on). '''16h30 UT.''' Pulse Tube on. Low pressure and High pressure OK. Mixture circulates at 2.95bar (J4) and 950mbar (J2 with preref on).

'''20h05 UT:''' Lowering to 850mbar. Keep this value for the night.

'''20h15 UT:''' T4K=278K. Tstill=265K. Good night and good luck (to myself)


== October 1st 2014 ==


'''STATUS OF THE INSTRUMENT'''

Cooling down still going on.

'''05h40 UT:''' T4K=90K. Tstill=75K. Flux set at 630mbar.

Back to the NIKA run 9

September 30th 2014

8h30 UT: Andrea arrives to the 30m to cool down the NIKA cryostat and to prepare all the facilities for the polarisation run.

STATUS OF THE INSTRUMENT

9h00 UT: Status of the Camera pulse tube : J1=96.3mbar - J2=329.8mbar - J3=297.3mbar - J4=160mbar - J5=350mbar

09h30 UT: Cryostat connected to the leak detector. Residual pressure in the cryostat 16mbar.

10h00 UT: Pumped the dilution circuit (until Jpi=2.2x10e-2mbar). Pumped the trap.

11h UT: Pressions stables. The zero on J1 was -41mbar. Reset it again to 0mbar by changing the config file.

11h30 UT: M5 and M6 mounted. Optical alignment of the cryostat with Santiago, OK. LUNCH TIME.

12h30 UT: First Leak test. From 3x10e-9 to 2x10e-8, little scary, I'll do it again before switching on the pulse tube.

13h00 UT: Warm impedance test: between 18 and 20mbar/min at 2.9bar (ev1 closed). Consistent with the last cooling down.

13h15 UT: Circulation throught the capillar starts.

14h00 UT. Pumped ev18 for a few minutes with the turbo pump (down to 2e-4mbar). We had 0.2mbar in ev18. REMEMBER NOT TO TOUCH AGAIN ev18 from now on.

15h45 UT. Second Leak test. From 9.3x10e-9 to 2.5x10e-8. LET'S CONTINUE!

16h30 UT. Pulse Tube on. Low pressure and High pressure OK. Mixture circulates at 2.95bar (J4) and 950mbar (J2 with preref on).

20h05 UT: Lowering to 850mbar. Keep this value for the night.

20h15 UT: T4K=278K. Tstill=265K. Good night and good luck (to myself)

October 1st 2014

STATUS OF THE INSTRUMENT

Cooling down still going on.

05h40 UT: T4K=90K. Tstill=75K. Flux set at 630mbar.

DailyReports9 (last edited 2014-10-14 10:21:16 by NikaBolometer)