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Size: 630
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Size: 1386
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| || {{attachment:oldconfrun8.png||width=900}} || {{attachment:oldconfrun8.png||width=900}} || | |
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| Figure. Left: old config, right: new config | || {{attachment:oldconfrun8.png||width=800}} || {{attachment:newconfrun8.png||width=800}} || '' '''Figure.''' Left: old config, right: new config. MADE WITH WINDOW ON CRYOSTAT, TO BE CONFIRMED (see tomorrow) WITH LN2. '''DON'T USE THIS BRAIN!!''' '' |
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== Saturday 15th February 2014 == 8h00. Theoretical start of the run. Winds peaking at 40m/s, telescope stopped probably the whole morning. 9h00. LN2 in front of the cryostat window to play at least with the resonances. "Decalage" found by the new "restore tones" is good. -22kHz and -1KHz at 1 and 2mm respectively, indicating that the param file run8.txt is well representative of LN2 temperature. 13h00. Wind hits 42m/s (150km/h). The telescope basement is a block of ice. Ski station is closed due to the wind. Put again the window on the cryostat, "restore tones" works very well. Found a shift of -393kHz and 100kHz. |
Friday 14th February 2014
Xavier and Alessandro arrive at the telescope. Made a new parameter file FOR THE 2MM array ONLY (definitely need the sky for the 1mm).
Old configuration (2mm): DAC gains: 20-23-20-28-35. General niveau: 5.
New configuration (2mm): DAC gains: 20-23-20-38-55. General niveau: 5. Pixels 17-25: niv 6. Pixels 55 to 56: niv 6. Pixels 73 to 78: niv 4. Pixels 96 to 108: niv 6.
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Figure. Left: old config, right: new config. MADE WITH WINDOW ON CRYOSTAT, TO BE CONFIRMED (see tomorrow) WITH LN2. DON'T USE THIS BRAIN!!
Strong (strange) 12Hz noise on some (e.g. 4-5) pixels.
Saturday 15th February 2014
8h00. Theoretical start of the run. Winds peaking at 40m/s, telescope stopped probably the whole morning.
9h00. LN2 in front of the cryostat window to play at least with the resonances. "Decalage" found by the new "restore tones" is good. -22kHz and -1KHz at 1 and 2mm respectively, indicating that the param file run8.txt is well representative of LN2 temperature.
13h00. Wind hits 42m/s (150km/h). The telescope basement is a block of ice. Ski station is closed due to the wind. Put again the window on the cryostat, "restore tones" works very well. Found a shift of -393kHz and 100kHz.