MLZ is a cooperation between:

Technische Universität München> Technische Universität MünchenHelmholtz-Zentrum Hereon> Helmholtz-Zentrum Hereon
Forschungszentrum Jülich> Forschungszentrum Jülich

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LENS> LENSERF-AISBL> ERF-AISBL

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85748 Garching

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 4-23

cct3, 6, 7

JVC 1-2

cct 4,5

cvt1 VTI

Common features

Temperature range (K), with exchange in sample gas

2,8 – 300

3 – 300

1.5 – 300

3 – 300

1.5 – 300

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

T < 700 K

800

-

800

-

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

min. 2.5

min. 2.5

min. 0.7

min. 2.5

4

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

< 1.5

< 1.5

min. 0.7

< 1.5

1.5

Dimensions

Sapphire windows

Diameter of sample space (mm)

< 50 and < 80

< 60

< 50

< 60

50

Height of sample space (beam window) (mm)

~ 75

~ 100

~ 50

~ 100

135

Available sample sticks

Standard stick for T (K)

< 300

< 300

< 300

< 300

High temperature stick for T (K)

< 700

800

-

800

Rotation sample stick to provide sample rotation
with fixed cryostat position

available

manually

-

manually

Gas adsorption stick

available

-

-

-

High voltage stick

available

-

-

-

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

available

-

-

CCI – Low Temperature Inserts

To achieve temperatures below 3K, low temperature insert (CCI) are available. The inserts work together with CCR type top loading cryostats.
Using 3He-CCI inserts, a base temperature of 450mK can be achieved. To reach a base temperature of 50mK the 3He/4He-CCI insert can be used.

Specifications

CCl – 3He

JKC1-2 – 3He/4He

Temperature range

450 mK – 10 K

20 mK – 1 K

Cool-down time (h)

5

6

Diameter of sample space (mm)

30

30

Total height of sample space (mm)

145

100

Distance cold plate to beam level (mm)

106.5

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

CC 1-4

CC 5-6

CC -7-CCM

CC 8-10

cce1, 4, 5

Temperature range (K)

2.8 – 300

2.2 – 300

2.2 – 300

2.8 – 600

3.5 – 400

Cool down time 300 K – 2.8 K (h)

2.5

2

4

5

1.5

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)

20×20
360°

Total height of sample space (mm)

110

10

85

< 136 (CC-8);
< 85 (CC-9, CC-10)

-

Contact

Dr. Manuel Suarez Anzorena
Phone: +49 (0)89 289-10769
E-mail: Manuel.suarez@frm2.tum.de

Dr. Valentyn Rubanskyi
Phone: +49 (0)89 158860-667
E-mail: v.rubanskyi@fz-juelich.de

Dr. Alexander Weber
Phone: +49 (0)89 158860-726
E-mail: al.weber@fz-juelich.de

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 Hereon> Helmholtz-Zentrum Hereon
Forschungszentrum Jülich> Forschungszentrum Jülich

MLZ is a member of:

LENS> LENSERF-AISBL> ERF-AISBL

MLZ on social media: