MLZ is a cooperation between:

Technische Universität München> Technische Universität MünchenHelmholtz-Zentrum Geesthacht> Helmholtz-Zentrum GeesthachtForschungszentrum Jülich> Forschungszentrum Jülich
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Low Temperatures

CCR – Closed Cycle Cryostats

The CCR is a top loading device. The sample tube is filled with exchange-gas. Temperature regulation is achieved by a sensor and a heater attached to the sample tube. The sample holder is in general mounted to a sample stick. Temperatures ranging from 3.5 K to RT can be regulated. To reach for temperatures above RT to 700 K the sample space has to be evacuated and a special high-temperature sample-stick has to be used (available for CCR 9-11 and JTC 1-4). For this case temperature control is provided by a heater and sensor mounted on the sample stick.

Specifications

 

CCR 7-9

JTC 1-4

JVC 1-2

Common features

 

 

 

Temperature range (K), with exchange in sample gas

2,8 – 300

3 – 300

1.5 – 300

Extended temperature range (K), evacuated sample space and HT sample stick

T < 700 K

T < 700

-

Cool down time of cryostat: 300 K – base temperature (h)

min. 2.5

min. 2.5

min. 0.7

Cool down time for sample change with cryostat at base temperature (h)

< 1.5

< 1.5

min. 0.7

Dimensions

 

 

 

Diameter of sample space (mm)

< 50 and < 80

< 60

< 50

Height of sample space (beam window) (mm)

~ 75

~ 100

~ 50

Available sample sticks

 

 

 

Standard stick for T (K)

< 300

< 300

< 300

High temperature stick for T (K)

< 700

< 700

-

Rotation sample stick to provide sample rotationwith fixed cryostat position

availabe

-

-

Gas adsorption stick

available

-

-

High voltage stick

available

available

-

High pressure sample stick for gas pressure cells (max. 4 kbar)

available

-

-

CCI – Low Temperature Inserts

To reach temperatures below 3 K CCI3He and CCI3He/4He insert cryostats for the CCR systems CCR 9-11 as well as JKC 1-2 – 3He/4He for the cryostats JVC 1-2 are available. Please note an additional preparative time of up to 4h is needed before first cool-down.

Specifications

 

CCl –        3He

CCl – 3He/4He

 JKC1-2 – 3He/4He

Temperature range

450 mK – 10 K

50 mK – 1 K

20 mK – 1 K

Cool-down time (h)

5

7

6

Diameter of sample space (mm)

30

30

30

Total height of sample space (mm)

145

70

100

Distance cold plate to beam level (mm)

106.5

27

80

CC – Closed Cycle Cryostats

The sample space of these liquid-cryogen free closed-cycle cryostats is inside the isolation vaccum. The thermalisation of the sample is achieved by the thermal conductivity of the sample holder and the cold-plate. To avoid temperature gradients a sample mounting with adequat thermal conductivity is needed. In case of sample with poor thermal conductivity, the usage of an exchange-gas (He) containing sample can or the use of a CCR-type cryostat should be considered.

Specifications

 

CC1-4

CC5-6

CC-7-CCM

CC8-10

JCC1-3

Temperature range (K)

2.8 – 300

2.2 – 300

2.2 – 300

2.8 – 600

3 – 300

Cool down time 300 K – 2.8 K (h)

2.5

2

4

3

2.5

Cool down time 600 K – 2.8 K (h)

-

-

-

5

-

Diameter of sample space (mm)

60

10

55

< 138 (CC-8); < 55 (CC-9, CC-10)

80

Total height of sample space (mm)

110

10

85

< 136 (CC-8); < 85 (CC-9, CC-10)

100

Contact

Heiner Kolb
Phone: +49 (0)89 289-14407
E-mail:

Gallery: CCR – Closed Cycle Cryostats

Cut through a standard CCR (CCR 9-11)
Cut through a standard CCR (CCR 9-11)
Sample sticks for CCR 9-11
Sample sticks for CCR 9-11
Standard cryostat JTC
Standard cryostat JTC

Gallery: CCI – Low Temperature Inserts

Cut through the CCI inserts
Cut through the CCI inserts

Gallery: CC – Closed Cycle Cryostats

Cut through CC-3
Cut through CC-3
Cut through CC-5 / CC-6
Cut through CC-5 / CC-6
Cut through CC-8
Cut through CC-8
CC-Cryostat JCC with sapphire window
CC-Cryostat JCC with sapphire window

MLZ is a cooperation between:

Technische Universität München> Technische Universität MünchenHelmholtz-Zentrum Geesthacht> Helmholtz-Zentrum GeesthachtForschungszentrum Jülich> Forschungszentrum Jülich