Nonmagnetic Fiberglass Cryostats
During the last year we added several new models to the line of CRYOTON's non-magnetic fiberglass cryostats. Mostly they are intended for application with a SQUID-based measuring systems. A new series of cryostats include low-noise liquid helium and liquid nitrogen cryostats for bio- and geophysical applications. Here we present a few basic models of the fiberglass-based cryostats of these series.
New !
Beginning from 2001 the Model LH-11.5-NTE is the most popular model of middle size liquid helium cryostats for the MCG-systems. This cryostat was developed for 4-channel MCG-system MCG7 of the SQUID AG Company and demonstrated excellent performance. We extended this basic version by the models LH-12.0-NTE and LH-14.5-NTE. These models have similar construction and keep all positive properties of the model LH-11.5-NTE. We use these cryostats in biomagnetic measuring modules and MCG-systems such as MCG-6073-GM and MCG/MEG-6193-GM.
Fibeglass liquid helium cryostat of the Model LH-11.5-NTE
Models LH-11.5-NTE, LH-12.0-NTE and LH-14.5-NTE have the following characteristics:
|
Description |
LH-11.5-NTE | LH-12.0-NTE | LH-14.5-NTE |
| D1 - Outside diameter of the cryostat (mm) | 237 | 237 | 237 |
| L1- Cryostat length (mm) | 930 | 1000 | 1100 |
| D2 Tail outside diameter of the cryostat (mm) | 125 | 180 | 200 |
| L2 Outer tail length (mm) | 200 | 200 | 100 |
| D3 Neck inside diameter (mm) | 90 | 121 | 150 |
| D4 Cryogenic bulb inside diameter (mm) | 180 | 180 | 180 |
| D5 Inner tail inside diameter (mm) | 90 | 121 | 150 |
| H - Hot-to-cold distance (mm) | 10 | 12,5 | 12,5 |
| Initial noise of the cryostat | <5 fT/ ÖHz | <5 fT/ ÖHz | <5 fT/ ÖHz |
| Speed of the liquid helium evaporation (liter per day) | 1.3 | 1.6 | 1.6 |
| Time to complete evaporation of liquid helium (days) | 7-9 !!! | 7,5 !!! | 8 !!! |
| Volume of liquid helium (lit) | 11.5 | 12.0 | 14.5 |
| Weight of the empty cryostat (kg) | 14 | 14 | 15 |
The advantage of this line of cryostats is that they need only one re-filing procedure per week and it is very important for use of MCG-systems as a practical instruments in a real clinics and hospitals.
Fibeglass liquid helium cryostat
of the Model LH-12-B
Fiberglass cryostat of the Model LH -12-B has the following characteristics:
| D1 - Outside diameter of the thermostat (mm) | 237 |
| L1 - Thermostat length (mm) | 900 |
| D3 - Neck inside diameter (mm) | 180 |
| D4 - Bulb inside diameter (mm) | 180 |
| H - Hot-to-cold distance (mm) | 25 |
| Time to complete evaporation of liquid helium (hr) | 170 |
| Volume of liquid helium (lit) | 12 |
| Weight of the empty thermostat (kg) | 11 |
The Model LH-5.3-B is a very compact, liquid helium cryostat designed for application in magnetocardiographic measuring system of Model MCG-6073-G. It contains a minimal amount of reflecting metal shields to decrease the intrinsic magnetic noise. The configuration of internal environment of the cryostat can be changed according individual requirements of customer. This type of cryostats has reliability and mechanical strength, low boil-off rate and light construction.
Fibeglass liquid helium cryostat of the Model LH-5.3-B
The cryostat of the Model LH-5.3-B has the following parameters:
| D1 - Outside diameter of the cryostat (mm) | 168 |
| D4 - Cryogenic bulb inside diameter (mm) | 121 |
| L1 - Cryostat length (mm) |
672 |
| H - Hot-to-cold distance (mm) | 10 |
| Initial noise of the cryostat | less than 5 fT/ÖlHz |
| Speed of the liquid helium evaporation (liter per day) | 1.6 |
| Time of complete evaporation of liquid helium (days) | 3.5 |
| Working time between re-filling of the system (days) | 3 |
| Distance between the measuring channels (mm) | 40 |
| Volume of the cryostat (lit.) | 5.3 |
New ! The Model LH-4.1-NB is a small size cryostat for geophysical applications.
Fibeglass liquid helium cryostat of the Model LH-4.1-B
The cryostat of the Model LH-4.1-NB has the following parameters:
| D1 - Outside diameter of the cryostat (mm) | 237 |
| D4 - Cryogenic bulb inside diameter (mm) | 180 |
| L1 - Cryostat length (mm) | 350 |
| D3 Neck inside diameter (mm) | 41 |
| H - Hot-to-cold distance (mm) | 30 |
| Initial noise of the cryostat | less than 5 fT/ÖHz |
| Speed of the liquid helium evaporation (liter per day) | 1.2 |
| Time of complete evaporation of liquid helium (days) | 3.5 |
| Volume of the cryostat (lit.) | 4.1 |
| Weight of the empty cryostat (kg) | 6.0 |
New! The Model LN-2.0-TI is a light weight, compact, liquid nitrogen cryostat designed for application in biomagnetic measuring systems based on HTS-dc-SQUIDs It has internal tail for fixing of the measuring probe with magnetometers. The inner diameters of the tail can be changed if necessary.
Fibeglass liquid nitrogen cryostat of the Model LN-2.0-TI
The cryostat of the Model LN-2.0-TI has the following parameters:
| D1 - Outside diameter of the cryostat (mm) | 115 |
| D4 - Cryogenic bulb inside diameter (mm) | 85 |
| L1 - Cryostat length (mm) | 570 |
| L4 - Cryogenic bulb length (mm) | 300 |
| D5 - Inner tail inside diameter (mm) | 60 |
| L5 - Inner tail length (mm) | 133 |
| H - Hot-to-cold distance (mm) | 9 |
| Time of complete evaporation of liquid nitrogen (days) | 10 |
| Volume of liquid nitrogen (lit) | 2.0 |
| Weight of the empty cryostat (kg) | 2.5 |
We propose to the market also the miniature low noise liquid nitrogen cryostats of Model LN-0.3-B for bio- and geophysical applications. The volume of cryostats is less than 0.3 liter, but the time of complete evaporation of liquid nitrogen is more that 60 hours.
Fibeglass liquid nitrogen cryostat of the Model LN-0.3-B
The cryostats of Model LN-0.3-B have the following parameters:
| D1- Outside diameter of the cryostat (mm) | 75 |
| D4- Cryogenic bulb Inside diameter (mm) | 43 |
| L1- Cryostat length (mm) | 300 |
| L4 - Cryogenic bulb length (mm) | 200 |
| H - Hot-to-cold distance (mm) | 10 |
| Time of complete evaporation of liquid nitrogen (hours) | 60 |
| Volume of liquid nitrogen (lit.) | 0.29 |
| Weight of the empty cryostat (kg) | 0.75 |
CRYOTON provides custom design in cryostats and we are ready to
discuss your special needs and problems. Please, contact us all the time at e-mail: cryoton@trtk.ru, or Moscow
Office Tel./Fax:+7-(495)-621-7322
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15-29, Oktjabr'skiy prospect, Troitsk, Moscow Region, 142190, Russia
e-mail: cryoton@trtk.ru
Moscow Office: Tel./Fax:+7-(495)-621-7322