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• HFI design, qualification, and performance
  ...operated at a temperature of ~0.1 K by means of a space qualified dilution cooler coupled to a high precision temperature control system. A 4He-JT system pro [[Image:HFI_horns.jpg|thumb|500px|center|HFI focal plane optics and 4K thermo-mechanical stage.]]
  5 KB (758 words) - 09:41, 3 February 2015
• LFI design, qualification, and performance
  ...also provides 18 K pre-cooling to the HFI helium J-T cooler. Two sorption cooler units are included in the flight hardware. * Sorption Cooler Subsystem (SCS);
  50 KB (7,826 words) - 22:29, 4 February 2015
• Timelines
  ...uces some sharp lines in the signal power spectra at frequencies of the 4K cooler's fundamental and its multiples, folded by the signal modulations. Fourier ; Demodulation: each LFI diode switches at 4096 Hz between the sky and the 4K reference load. The data acquired in this way is dominated by 1\f noise tha
  28 KB (4,415 words) - 18:43, 21 August 2015
• LoadTest2
  ...fluctuations are driven by changes in the distance from the Sun, sorption cooler cycling and fluctuations in gas-liquid flow, and fluctuations in cosmic ray
  42 KB (7,697 words) - 16:43, 4 October 2012
• The satellite
  *4K compressors *Sorption cooler radiator
  14 KB (2,170 words) - 09:29, 21 May 2014
• TOI processing LFI
  ...s corrected for systematic effects. Next, measurements of the sky and the 4K load are differenced, then the signals from one diode are combined with sig ...nd the corresponding linearized output, the input voltages coming from the 4K reference channel and the corresponding linearized output.
  34 KB (5,468 words) - 15:34, 4 February 2015
• HFI operations timeline
  14/05/2009 17:39:39 HFI: open dilution cooler valves 14/05/2009 18:52:33 HFI: set 4-K cooler internal frequency at 40Hz
  27 KB (2,766 words) - 19:41, 11 December 2014
• LFI overview
  ...instrument with main thermal stages, focal plane, waveguides and sorption cooler piping highlighted. Right Panel: labelling of feed horns on the LFI focal p ...he reference loads are cooled to approximately 4 K by mounting them on the 4K structure of the HFI. In addition, the effect of the residual offset (< 2 K
  3 KB (487 words) - 17:09, 4 February 2015
• The satellite WiP
  *4K compressors; *Sorption cooler radiator;
  14 KB (2,136 words) - 09:37, 3 February 2015
• TestMassEditing
  ...uces some sharp lines in the signal power spectra at frequencies of the 4K cooler's fundamental and its multiples, folded by the signal modulations. Fourier
  35 KB (5,146 words) - 17:59, 3 July 2014
• Terminology
  ;4K lines: EMI/EMC influence of the 4K cooler mechanical motion on the bolometer readout electronics. ;DCE : Dilution Cooler Electronics
  10 KB (1,539 words) - 15:11, 21 July 2014
• ADC correction
  ...ted signal taking into account the 40 Hz parasitics associated with the 4K cooler drive electronics. ...ional tests done during the LFI extension of the mission when the dilution cooler did not operate anymore. For this reason, there is no reason to detail more
  1 KB (168 words) - 17:10, 4 February 2015