Aktuelle Forschungsprojekte

Image Reduction of primary noise sources of fans
Image Service offer for Leak Detection and Tightness Test
Image Swirl-free on the move...
Image Computational fluid dynamics CFD
Image In-situ investigation concerning the swelling behaviour of polymer materials under elevated pressures and temperatures
Image Innovative cryogenic cooling system for the recondensation / liquefaction of technical gases up to 77 K
Image Calibration leak for the water bath leak test
Image Air-water heat pumps
Image Electrochemical decontamination of electrically conducting surfaces „EDeKo II“
Image Investigation of materials
Image Calibration of Low Temperature Sensors
Image Electrical components in refrigeration circuits
Image Helium extraction from natural gas
Image Humidifier System for High-Purity Gases
Image 3D - Air flow sensor
Image Solar Cooling

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