Image Low Temperature Tribology
Image Helium extraction from natural gas
Image Solar Cooling
Image Micro fluidic expansion valve
Image State of system and failure analyses
Image Pulse-Tube-Refrigerator with sealed compressor
Image Thermostatic Expansion Valves
Image Testzentrum PLWP at ILK Dresden
Image Hydrogen and methane testing field at the ILK
Image Membrane-based Air Conditioning
Image Low noise and non metallic liquid-helium cryostat
Image Test procedures for electrical components
Image High Capacity Pulse Tube Cooler
Image Non- invasive flow measurements
Image Investigation of coolants
Image Low Temperature Measuring Service

You are here:  Home /  Research and Development


Low noise and non metallic liquid-helium cryostat

Industry and Research Institutes

Dr. rer. nat. Andreas Kade

+49-351-4081-615

Low-noise Magnetic Field Cryostat for SQUID-Applications

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

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

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

Further Projects - Research and Development

Image

Electrical components in refrigeration circuits

High voltage tests under real conditions

Image

PerCO

Herstellung neuartiger Sperrschichten an elastomeren Dichtungsmaterialien zur Verminderung der Permeation des Kältemittels R744 (CO2)

Image

Influenced melting point of water by magnetic field

Controlled sub-cooling of products in freezing processes

Image

Non- invasive flow measurements

PDPA - flow fields and particle sizes


Contact

Institut für Luft- und Kältetechnik - Gemeinnützige Gesellschaft mbH
Bertolt-Brecht-Allee 20, 01309 Dresden


Secretary to the Management

+49-351-4081-520

+49-351-4081-525

Image ISO 9001
Bild Zuse Mitglied Bild SIG