4K Closed Cycle Cryostat
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CCS (Closed Cycle System) refrigerator utilizes the principle of G-M thermodynamic cycle to compress and expand helium. The gas is expanded and cooled in the cold head, and the expanded low-pressure helium gas is returned to the compressor, and the cycle is repeated. The refrigerator consists of two stages, the first stage is used to cool the heat shield around the sample, and the second stage is used to cool the sample.
The 4K closed cycle cryostat provided by Jinzhengmao Technology Co., Ltd. is a variable temperature and low temperature platform based on G-M refrigerators produced by domestic and foreign companies. Warm, easy to operate, and low maintenance cost.
Scope of use:It is mainly used for magnetic measurement, optical measurement, photoelectric reaction, light reflection, fluorescence and magnetoresistance in low temperature and vacuum environment.
Sdvantage:
※ Compact structure, high cost performance, no refrigerant consumption when reaching low temperature, long maintenance period, strong expansibility, and easy to use;
※ The sample is in a high vacuum environment or atmosphere;
※ Can be integrated with optical windows, a variety of optional window materials;
※ A variety of gold-plated oxygen-free copper sample holders can meet the measurement needs of different experimental requirements, and the sample holders can be quickly replaced;
※Suitable for electrical, optical and magnetic measurements in low temperature environments;
※Silicon diode thermometer or Cernox thermometer (used in strong magnetic field) is installed on the cold finger;
※The compressor can be air-cooled or water-cooled, and the maintenance cycle is long;
※A variety of options can meet the measurement needs of different experiments.
Sample Holder OptionsModel
Specifications and Parameters
Illustrate
Remark
T8015
15*25mm
Additional electrical sample holder with 8 binding posts above and below
- All standard 10K thermostats are equipped with a sample holder by default. The size can be made according to the standard, or it can be designed according to the specific requirements of the user. If the design is more complicated, a fee can be charged as appropriate;
- Comes with an optical sample holder as standard, and comes with a sample press. There are holes on the pressing sheet, and the diameter is the same as the size of the clear hole;
- The cooling power of the 10K refrigerator is slightly different, and the size of the sample holder can be adjusted within a certain range according to the specific power.；
T8020
20*30mm
Additional electrical sample holder with 8 binding posts above and below
T8030
30*35mm
Additional electrical sample holder with 8 binding posts left and right
T8040
40*45mm
Additional electrical sample holder with 8 binding posts left and right
T8115
15*25mm
Additional optical sample holder with Φ8 through hole in the middle
T8120
20*30mm
Additional optical sample holder with Φ10 through hole in the middle
T8130
30*35mm
Additional optical sample holder with Φ15 through hole in the middle
T8140
40*45mm
Additional optical sample holder with Φ20 through hole in the middle
T8205
Φ5mm
Powder sample container with 5mm window on one side of the container
T8210
Φ10mm
Powder sample container with 5mm window on one side of the container
Optical window options
Window Model
Window Specification
Illustrate
Remark
W-20
Φ20*1.5mm
Additional Quartz Windows
1、The specifications of the window are all visible area, and the actual size is larger than the visible area;
2、For window installation, you can choose O-ring compression or low-temperature epoxy resin bonding. If the size of the vacuum cover is small, try to use glue.
W-40
Φ40*2mm
Additional Quartz Windows
K9-W20
Φ20*1.5mm
Additional K9 window
K9-W20
Φ40*2mm
Additional K9 window
F-W20
Φ20*1.5mm
Additional calcium fluoride window
F-W40
Φ40*2mm
Additional calcium fluoride window
Cable options
Name
Illustrate
Remark
PTFE Wire
Ordinary wire, large heat leakage, diameter between 0.1-0.3
The cable is not required to use a common PTFE wire alone, it is required to be made according to the requirements, and the wire should be used in conjunction with the corresponding connector.
Low Temperature Coaxial Cable
Low signal interference and accurate measurement
Phosphor Bronze Twisted Pair
Poor thermal conductivity, small heat leakage, diameter 0.2mm (4 pieces)
Microwave Semi-rigid Cable
High frequency cable, high frequency signal use
Connector options
Electrical Connector Model
Specifications And Parameters
Describe
T91-8P Ordinary Glass Sintering
8pin
Add a quick-plug 8P common electrical connector
T91-12P Ordinary Glass Sintering
12pin
Add a quick-plug 12P common electrical connector
T91-SMA
0-18GHz
With flexible cable
0-12.4GHz
With semi-rigid, semi-flexible cable
T91-BNC
0-4GHz
With ordinary coaxial cable
T91-TRX
Triax Connector
Add a quick-plug triax connector
T91-S
Stainless Steel Junction Box
Add a stainless steel junction box
T91-PTEF
PTFE wiring cover
Add a Teflon junction cover to the stainless steel junction box
Remark:
1：All thermostats are shipped with two connectors, one for temperature sensor and heater installation, and the other for other performance measurements. When more test leads are required, additional mounting holes are required. , or install one or more Breakout Boxes.
2：There is T91-S option in the above table, this option terminal board and shell form the grounding integrally, the other is T91-PTEF option, this option is the use of PTFE board insulation connection in the shell and the installed connector, the shell and the The electrical properties of the joints are independent of each other. Pay attention to this when selecting.
