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Model HE-3-CCR-SSV Cryostat
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Description:
The
model HE-3-CCR-SSV cryostat is a cryogen-free He-3 system for cooling
samples in vacuum. It uses a two stage mechanical cooler with no
cryogens, to achieve a minimum temperature of approximately 300 mK.
The He-3 gas is permanently stored in the cryostat and is condensed
after initial system cool down. The cryostat's single stage design permits
He-3 condensation without requiring a 1 K pot and associated pump.
An internal charcoal sorption pump is used to reduce the pressure at the
liquid He-3 to cool it down to its terminal temperature.
The
system includes highly conductive flexible thermal links made from
multiple strands of OFHC copper fine wires, to connect the two
stages of the cooler to two OFHC copper flanges. These are
in turn used to cool to two radiation shields and three heat switches
that control the He-3 condensation, cool down and temperature control.
This design intercepts the vibrations of the cryo-cooler and
significantly reduces the vibrations that may be transmitted to the He-3
stage and any detectors or samples attached to that stage.
The system is supplied with a
complete set of thermometers and heaters to monitor and control the
temperature of the various stages of the cryostat. It also
includes all the necessary valves and pressure gauges for safe reliable
system operation.
To see an actual system cool
down chart of the Janis model HE-3-CCR-SSV cryogen-free He-3 cryostat,
please click on the highlighted title below. The data includes the
temperature of the first stage cold plate, the charcoal pump, the He-3
condenser and the He-3 stage. The downloaded file will be in PDF format
which is viewable and printable with Acrobat Reader, a free plug-in
utility from Adobe.
To download the free acrobat
plug-in software click
here.
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The model HE-3-CCR-SSV system includes
the following components:
- Cryostat with vacuum jacket
and cold stages
- Cryo-cooler (cold head and
compressor)
- Charcoal sorption pump with
heater and thermometer
- He-3 condenser
- He-3 pot with heater and
thermometer
- Permanently stored He-3 gas
- Heat switches
- Operation test
Options:
- Resistive wires
- Coaxial cables
- Fiber optical cables
- Clear shots to sample area
- Low eddy current cold
finger
- Automatic temperature
controller
- Vibration isolation stand
- Optical windows
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Performance Specification:
| Base
Temperature:
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320 mK
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| Holding
Time at Base Temperature (typical):
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24 hours
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| Temperature Range:
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0.32 K - 80 K
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| Sample
Space:
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As required
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Table of Contents |
Pages |
 Introduction |
1 |
Standard He-3 Cryostats |
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HE-3-SSV Insert, Standard Sample Loading, Sample in Vacuum |
2 |
HE-3-SVSD Insert, Standard Sample Loading, Sample in Vacuum for He-4 Storage Dewar
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3 |
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HE-3-SSXGAS Insert, Standard Sample Loading, Sample in Exchange Gas |
4 |
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HE-3-XGHS Mini-Exchange-Gas Handling System |
5 |
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HE-3-SOSV Cryostat, Standard Sample Loading, Optical, Sample in Vacuum |
6 |
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HE-3-SOSV-S Cryostat, Standard Sample Loading, Optical, Sample in Vacuum |
7 |
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HE-3-SVC Cryostat, Standard Sample Loading, Sample in Vacuum, Compact for Detector Application |
8 |
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HE-3-CCR-SSV Cryostat, Standard Sample Loading, Sample in Vacuum, Cryogen-free |
9 |
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HE-3-SSV-CF Cryostat, Standard Sample Loading, Sample in Vacuum, Continuous Flow |
10 |
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HE-3-TLSL Cryostat, Top Loading, Sample in He-3 Liquid |
11 |
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HE-3-TLOSL Cryostat, Top Loading, Optical, Sample in He-3 Liquid |
12 |
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HE-3-TLSV
Cryostat, Top Loading, Sample in Vacuum |
13 |
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Gas Handling System for Top Loading He-3 Systems |
14 |
Special He-3 Cryostats |
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HE-3-TLSL-NMR Cryostat, Top Loading, Sample in He-3 Liquid for NMR Experiments |
15 |
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HE-3-TLSUHV-SPM Cryostat, Top Loading, Sample in UHV for Scanning Probe Microscope System |
16 |
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HE-3-SSUHV-SPM/ESR Cryostat, Standard Sample Loading, Sample in UHV for Scanning Probe Microscope System and Electron Spin Resonance System |
17 |
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HE-3-BLSUHV-STM Cryostat,
Bottom Loading, Sample in UHV for Scanning Tunneling Microscope System
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JANIS RESEARCH COMPANY, INC.
2 Jewel Drive, P.O. Box 696
Wilmington, MA 01887-0696 USA
TEL: +1-978-657-8750 FAX: +1-978-658-0349
E-Mail: sales@janis.com
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