Current research projects

Image Service offer for Leak Detection and Tightness Test
Image Lifetime prediction of hermetic compressor systems
Image Software modules
Image Electrochemical decontamination of electrically conducting surfaces „EDeKo II“
Image IO-Scan - Integral measuring optical scanning method
Image Innovative Parahydrogen Generator Based on Magnets
Image Certifiable connection types in cryogenics
Image Behavior of multiphase cryogenic fluids
Image Computational fluid dynamics CFD
Image Cool Up
Image Investigation of material-dependent parameters
Image Reducing the filling quantity
Image Certification of efficient air conditioning and ventilation systems through the new "indoor air quality seal" for non-residential buildings
Image Brine (water)-water heat pump
Image Practical training, diploma, master, bachelor
Image Tensile and compression testing

You are here:   /  Home


Low noise and non metallic liquid-helium cryostat

Industry and Research Institutes

Dr. rer. nat. Andreas Kade

+49-351-4081-5117

Low-noise Magnetic Field Cryostat for SQUID-Applications

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

Further Projects

Image

ZeroHeatPump

Performance management of small heat pumps without energy consumption

Image

Mass Spectrometer

Determining the composition of gas mixtures in the high or ultra-high vacuum range

Image

Tensile and compression testing

Determination of yield strength, tensile strength and elongation at break