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JSPWiki v2.0.52

ILL3 is a cryofurnace which allows in principle temperatures from 2 K to 450 K without sample change. However, there are some drawbacks:

  • due to the large temperature range Rh-Fe sensors are used. The calibration at low temperatures is bad (about +- 0.3 K).
  • for temperatures > 300 K the consumption of LHe (liquid helium) increases drastically
  • it is possible to work without LHe, under the condition, that the main vacuum is pumped constantly. The use of LN2 (liquid nitrogen) is mandatory.
  • the consuption of liquids may be reduced by removing the exchange gas. But this will affect the temperature of the sample, the difference to the sensor temperature might get untolerably high.

No Cadmium or Indium beyond Room Temperature!

LHe hold time with stable temperature below 50 K: 2.2 d


Attachments:  ill3a.jpg 
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This page last changed on 07-Dec-2022 14:00:49 UTC by MarkusZolliker.