Current research projects

Image Investigation of materials
Image ZeroHeatPump
Image Pulse-Tube-Refrigerator with sealed compressor
Image Electrical components in refrigeration circuits
Image Investigation of material-dependent parameters
Image Ionocaloric cooling
Image Humidifier System for High-Purity Gases
Image Thermal engines
Image Filter Tests
Image Software for test rigs
Image Certification of efficient air conditioning and ventilation systems through the new "indoor air quality seal" for non-residential buildings
Image Development of a Cryogenic Magnetic Air Separation Unit
Image Cryostats, Non-Metallic and Metallic
Image Combined building and system simulation
Image Industry 4.0 membrane heat and mass exchanger (i-MWÜ4.0)
Image Low temperature – test facilities

You are here:   /  Home


Low noise and non metallic liquid-helium cryostat

163,162,164

Technical Data for the Cryostats

parametervalue
volume of liquid helium5 to 12 litre (other volume possible)
time to complete evaporation of helium3 to 7 days (depends on size)
heat load0.1 W (in standby operation)
rate of helium evaporation≤ 3 litre / day
holding time of the liquid heliumup to 4 days without refilling
initial noise of the cryostat< 3 fT / Hz½
helium leak test (He-vessel)< 1 × 10-11 mbar l / s

ILK Dresden developed low noise magnetic field and non metallic helium cryostats made of GRP (glass reinforced plastics) with a high helium and vacuum holding time.

The cryostats can operate in a direction independent operation mode (tiltable arrangement) and hence they are suitable for a plurality of several applications.

The ILK concept offers much lower permeation rates inside the He-reservoir as comparable models from other manufacturers and is therefore perfect for SQUID (superconducting quantum interference device) applications and other long-term measurements.
 
The technical design of the cryostats is thus predestined for future sensor generation.

Specification

  • suitable for the cooling of SQUID-Sensors
  • non-metallic (GRP)
  • fast filling with LHe via thermosiphon
  • GRP exhaust gas cooled radiation shield for high efficiency.
  • small cold-warm distance feasible
  • low maintenance 
  • other design variants possible on costumer request

Low noise magnetic field

The low-noise magnetic field of the cryostat was tested in the magnetically shielded room BMSR-1 of PTB Berlin and is smaller than the lowest resolution limit of the measurement system used, see figure below.

Your Request