Fully Integrated Cooling Solution

Versatile, rack-mountable cryogenic platform

Fully Integrated Cooling Solution

Versatile, rack-mountable cryogenic platform

S-Type Essential

Integrated. Automatic. Flexible.

The S-Type Essential is a versatile, rack-mountable sub-Kelvin cryostat designed for the operation of low-temperature electronic devices, such as single-photon detectors or light sources, or the integration of complex customer setups. In its standard configuration, the system provides continuous cooling at 300 mK and “one-shot” operation down to 100 mK – independent of the supply with cryogens.

100 mK - 300 K

150 x 300 mm

300 mK

Photograph of the S-Type Essential Cryostat completely mounted in a custom 19'' rack

Key Benefits

Built for maximum design flexibility, even below 1 K

Versatile Cryogenic Platform

Despite its compact size the S-Type Essential features a large sample platform of 150 mm x 300 mm to accommodate complex user setups or multiple electronic devices. With two large user ports of 120 mm x 110 mm, it can be easily adapted to integrate, e.g., special wiring, fiber-optics or custom setups.

Continuous, Cryogen-free Operation at 300 mK

In its standard configuration, the S-Type Essential features two ADR units which work together to provide continuous, cryogen-free cooling at temperatures as low as 300 mK. Additionally, both units can be operated in “one-shot” mode to reach temperatures as low as 100 mK for a limited hold time. Both in continuous and “one-shot” mode, the cooling process is automatic and can be controlled though our intuitive graphical user interface.

Fully Integrated Cooling Solution

The most prominent feature of the S-Type Essential is its full integration in a 19’’ rack, with the cryostat mounted in the lower compartment, and the control electronics in the upper part of the rack. Additionally, the upper part offers enough space to accommodate typical user electronics, so that the complete system will not take up more space in your lab than absolutely necessary.

 

Available Options

Accessories for your individual cryogenic requirements

Up to 4 optical fibers

to run detectors or photon sources

Up to 16 RF lines

and up to 48 DC lines

Low resistance wiring

e.g. for piezo positioner operation

Picture of RF and DC wiring in the cryostat

Typical Applications

Innovative cooling for state-of-the-art science and technology

Superconducting Nanowire Single-Photon Detectors (SNSPD)

Cryogenic nanowire detectors are among the most efficient photon detectors available today. They are useful for various applications in metrology, imaging, and communication, including also future fiber-based quantum key distribution networks. SNSPD must be operated well below their superconducting critical temperature of typically several Kelvin. They will benefit from even lower temperatures particularly at the telecom and longer wavelengths. Therefore, kiutra’s S-Type Essential provides continuous cryogen-free sub-Kelvin cooling. Thanks to the robust magnetic refrigeration process, detector cooling and related applications benefit from unsupervised long-term cryostat operation. Despite its small footprint the S-Type Essential offers also a large sample stage. It can thus easily accommodate and operate multiple fiber-coupled detectors and related low-temperature wiring and electronics. Its compact size allows to mount the cryostat in a 19” rack, making it an ideal choice for integrated sensing and communication applications.

Schematic Graphic of a superconducting Nanowire Single-Photon Detector (SNSPD)
Schematic deptiction of a diamond pressure cell

High-Pressure Measurements

Materials with strong electronic correlations are often susceptible to the application of pressure. Using high-pressure techniques like piston-cylinder or Bridgman cells, physical properties such as the magnetization, susceptibility, and resistivity can be studied as a function of temperature, magnetic field, and pressure. This allows to map out complex phase diagrams, to tune materials towards low-temperature electronic instabilities, and to investigate their behaviour in the proximity of a phase transition. The kiutra L-Type Rapid is a fast-cooling cryostat and therefore ideally suited to study pressure cells, where the pressure must be changed frequently and ex-situ. The Sample Puck used in kiutra’s sample loader offers enough space to mount different high-pressure clamp cells. More complex experimental setups that require, e.g., gas-activated cells for in-situ changes of the pressure or in-situ pressure determination using ruby fluorescence can be implemented using kiutra’s S-Type Essential cryostat. It offers a large sample platform and can be easily adapted by the user to meet his individual requirements.

Performance Data

Continuous solid-state cryogenic cooling

Continuous Operation at 300 mK

Conventional adiabatic demagnetization refrigerators (ADR) allow only for “one-shot” cooling. By combining multiple ADR units, kiutra’s cryostats can provide both “one-shot” and additionally continuous sub-Kelvin cooling (cADR) independent of the supply with cryogens. In its standard configuration, the S-Type Essential uses two ADR units to generate continuous magnetic cooling. The figure shows the temperatures of both ADR units running in cADR mode at 300 mK. While the first unit cycles between the 4 K main heat bath (provided by the cryocooler) and a temperature below the target temperature, the second unit controls the sample temperature. As a result, the sample stage can maintain a constant temperature of 300 mK with a typical temperature stability <0.1 %, and a slightly reduced stability <2 % when activating its heat switch to initialize the regeneration.

Graph showing the continuous operation of the S-Type Essential Cryostat at 300 mK.

Cooling Power

A detailed knowledge of the cooling performance of a system is essential for the realization of cryogenic applications. This graph shows the cooling power of the S-Type Essential, measured at the sample platform with the standard 24 lines DC wiring, sample heater, and thermometer installed.

Graph showing the cooling power of the S-Type Essential Cryostat as a function of temperature

Scope of Supply

We deliver fully equipped, turnkey cooling solutions

Cryostat

Sumitomo RP-082B2 closed-cyle pulsetube cryocooler, 1W 4.2K, 40 W @ 45 K
Sumitomo F70H water-cooled indoor helium compressor, 20 m flexlines
Two ADR units for one-shot continunous operation:
  • 2 ADR magnets
  • 2 Heat switches
  • 2 Cooling media
Wide range pressure gauge
Integrated passive quench protection
Two user ports for custom integration:
  • 120 x 110 mm

Instrument Control

Custom 19” electronics rack
kiutra Modular Control Unit (MCU):
  • Base Module
  • Power Module
  • Drive Module
  • 2x Load Module
kiutra Compressor Control Unit (CCU)
Temperature controller
Calibrated temperature sensor on sample stage
Temperature sensors on cryocooler cold stages and first ADR unit
Sample heater and warm-up heater
User PC with pre-configuration Python-based instrument control software and high-definition display
2 x Digital high frequency magnet power supply
User breakout
Filtered temperature sensor breakout
Photograph of the electronics part and the cryostat housing of the S-Type Essential Cryostat

Wiring

24 DC Wires

Tech Specs

S-Type Essential

Schematic Drawing of the S-Type Essential Cryostat
System size (cm)
(w x l x h)
cryostat
rack
compressor
80 x 80 x 71
80 x 80 x 71
54 x 45 x 50
System weight (kg)cryostat< 300
Size of sample platformwidth x length
height
150 x 300
100
System cooldown time (hrs)23
Continuous temperature control (K)0.3 – 300
Cooling power (µW)@ 500 mK
@ 1K
50
160
Operation time (hrs)@100 mK3 hours
Temperature stabilitytypical
while switching stages
< 0.1 %
< 2 %

Do You Need Further Information?

Schedule a call with our experts and download our brochure

Our team is experienced in many fields of low-temperature research. We are happy to learn more about your requirements and support you in finding your optimal cooling solution.
Get our brochure for the benefits and key specifications of the S-Type Essential

Focus on Your Sample –
Not on Your Cryostat

Compact sub-Kelvin cryostat with free-beam optical access

Focus on Your Sample –
Not on Your Cryostat

Compact sub-Kelvin cryostat with free-beam optical access

S-Type Optical

Compact. Robust. Simple.

The S-Type Optical is a very compact cryostat designed for a broad range of low-temperature experiments and applications that require simple and fast access to the sample stage. The system offers a unique combination of sub-Kelvin temperatures, automatic operation, and free-beam optical access on a small footprint.

800 mK - 300 K

> 30 hours

< 0.05 %

S-Type Optical Cryostat shown from the front. The Optical Access is visible on top of the cryostat.

Key Benefits

Built to light up the sub-Kelvin space

Optical Measurements at sub-Kelvin Temperatures

The S-Type Optical offers a unique combination of cryogen-free sub-Kelvin cooling and free-beam optical access on an extremely compact footprint. The system is equipped with a single, high capacity cooling medium to provide “one-shot” cooling to temperatures below 800 mK for a limited amount of time. With 30 hours of hold-time at 1 K and a fully automatic regeneration process of less than 1.5 hours, the system provides plenty of time to perform all sorts of measurements.

Simple Sample Access

The S-Type Optical comes with a coldfinger type sample stage, pointing vertically out of top plate of the vacuum vessel. This comes with several advantages. First, the sample space is not covered by a large vacuum vessel but surrounded by a compact vacuum hood that can easily be customized and is compatible with small working distances. Second, the manual sample changing procedure is straightforward and can be completed within minutes. To access the sample stage, the user just opens a couple of screws, removes the vacuum cover and heat shields, and mounts the sample on the sample platform.

Precise Temperature Control

The S-Type Optical is equipped with a magnetic cooling unit which can control temperature between 800 mK and typically 6 K. In this temperature range, the temperature is controlled magnetically, so that no heaters, error-prone valves or capillaries are needed. The direct temperature control translates into an outstanding stability of 0.05% at 1 K. If you would like to also access higher temperatures, continuous sweeps covering the whole temperature range from 800 mK to room-temperature can be performed using an additional sample stage heater.

 

Available Options

Accessories for your individual cryogenic requirements

Up to 4 RF lines

and up to 24 DC lines

Low resistance wiring

e.g. for piezo operation

2 T Sample magnet

Split-pair sample magnet with optical access
Picture of the sample stage of an S-Type Optical Cryostat.

Typical Applications

Innovative cooling for state-of-the-art science and technology

Optical investigation of electronic correlations

The investigation of many-particle correlations, their impact on the bulk properties and transport behaviour of condensed matter, and how these correlations trigger the emergence of new and exotic phases is a particularly exciting and active field of research. Several measurements including Rayleigh (elastic), Raman (inelastic), or resonant inelastic light scattering can be used to study collective excitations of the solid state. For such investigations, typically low temperatures in combination with fiber-coupled or free-beam optical access are needed. These requirements are met by kiutra’s S-Type Optical, which offers a unique combination of sub-Kelvin temperatures, free-beam optical access, small working distance, and compact system size to enable various optical measurements.

Schematic depiction of an optical experiment
Generic Graph of the spectrum of an arbitrary material collected in low-temperature photoluminecence.

Low-temperature photoluminescence

The investigation of photo-physical properties yields insights into electronic correlations of lower-dimensional systems or heterostructures. A well-established spectroscopic technique is the observation of photoluminescence, i.e., the analysis of light that is emitted from a sample after the absorption of photons. Tracking characteristic features in the photoluminescence spectra over a broad temperature range provides additional information on the energy scales and correlations of the electronic structure. The S-Type Optical offers a wide, continuous temperature range from room temperature to the sub-Kelvin regime. In combination with its customizable free-beam optical access, it thus allows to investigate photo-physical properties over four orders of magnitude.

Performance Data

Long-lasting and simple cooling

One-shot cooling with auto-regeneration

The figure shows the typical “one-shot” performance of the S-Type Optical with free-beam optical access, low resistance DC wiring, and 4 RF lines installed. Starting at the bath temperature of less than 4 K, the cryostat quickly reaches the setpoint temperature. The target temperature of 1 K can be stabilized with ΔT/T<0.05% for more than 30 hours. The automatic regeneration process of the ADR takes less than 1.5 hours resulting in a duty cycle >95 %.

Plot showing over 30 hours of hold time for the optical cryostat at 1K

Scope of Supply

We deliver fully equipped, turnkey solutions

Cryostat

Sumitomo RP-082B2S closed-cycle pulsetube cryocooler, 0.9 W 4.2K, 35 W @ 45 K
Cold head with remote rotary valve for a reduced vibration level
Sumitomo F70H water-cooled indoor helium compressor, 20 m flexlines
ADR unit for one-shot operation:
  • 1 ADR magnet
  • 1 Heat switch
  • 1 Cooling medium
Wide Range Pressure gauge
Integrated Passive Quench Protection

Instrument Control

Custom 19” Electronics rack
kiutra Modular Control Unit (MCU)
  • Base Module
  • Power Module
  • Drive Module
  • Load Module
kiutra Compressor Control Unit (CCU)
Temperature controller
Temperature sensors on cryocooler cold stages and ADR unit
Calibrated temperature sensor on sample stage
Sample heater and warm-up heater
User PC with pre-configured Python-based instrument control software and high-definition display
Digital high frequency magnet power supply
User breakout
Filtered temperature sensor breakout
Top view of the S-Type Optical Cryostat. Cover opened to show internal structure.

Standard Wiring

24 DC Wires

Optical Access

Coldfinger type sample stage
Easy access for sample installation
Optical windows in vertical and horizontal plane available

Tech Specs

S-Type Optical

Schematic drawing of a S-Type optical cryostat.
System size (cm)
(w x l x h)
cryostat
rack
compressor
93 x 71 x 86
60 x 80 x 66
54 x 45 x 50
System weight (kg)cryostat< 200
Size of sample platform (mm)diameter (mm)ø 41
Temperature range (K)< 0.8 – 300
Continuous temperature control (K)3.5 – 300
Operation times (hours)@ 1.5 K
@ 1 K
50
30
Cooldown timecryostat12 hours
Temperature stabilitymagnetic temperature control (< 6K)< 0.05 %
Vibrations (µm)< 2 µm

Do You Need Further Information?

Schedule a call with our experts and download our brochure

Our team is experienced in many fields of low-temperature research. We are happy to learn more about your requirements and support you in finding your optimal cooling solution.
Get our brochure for the benefits and key specifications of the S-Type Optical

The First of Its Kind

Top-loading cryostat for simple and fast low-temperature analysis.

The First of Its Kind

Top-loading cryostat for simple and fast low-temperature analysis.

L-Type Rapid

Top-Loading. Fast. Simple.

The L-Type Rapid is a unique top-loading cADR system offering continuous cooling at 300 mK and one-shot operation to 100 mK. Its innovative automatic sample transfer allows to cool a sample to the minimum temperature within less than three hours, enabling high-throughput screening of scientific samples and rapid prototyping of quantum electronics. For low-temperature investigations of field-dependent physical properties, the L-Type Rapid can be equipped with a 5T sample magnet.

100 mK - 300 K

< 3 hours

300 mK

Photograph of the L-Type Rapid Cryostat

Key Benefits

Built for an improved sub-Kelvin experience.

Innovate Faster

The L-Type Rapid features kiutra’s proprietary puck-based top-loading sample exchange mechanism.  This option allows the user to prepare his sample on a sample puck and load it into the cryostat in just a couple of minutes – there is no need to warm up the cryostat. In this way, a sample can be installed and cooled to the base temperature in less than three hours. After completion of the low-temperature tests, the sample can be removed just as quickly as it was installed, and within a few minutes the next device, prepared on a spare puck, can be loaded. Thus, the L-Type Rapid allows the highest sample turnover for sub-Kelvin studies.

Wide Temperature Range

ADR systems always come with a heat switch to decouple the solid-state cooling medium from its pre-cooling stage during the demagnetization refrigeration process. In the L-Type Rapid, the latter allows for continuous operation at 300 mK and one-shot cooling down to 100 mK. Moreover, the weak thermal link provided by the heat switch also allows to carry out heater-assisted continuous temperature sweeps from base to room temperature. In contrast to typical He-based refrigerators, the L-Type Rapid thus offers simple access to a large temperature range, making additional equipment or accessories for working with very low temperatures obsolete.

Highly Modular Cooling Platform

The L-Type Rapid is a versatile cryogenic platform for basic science and applied quantum research, offering a variety of possibilities to configure the system according to customer-specific requirements. The sample puck and cryostat wiring can be chosen to provide up to 4 RF and 40 DC connections, including also low resistance wiring for driving piezo positioners. For samples that are sensitive with respect to magnetic fields, mu metal shielding can be added. To probe magnetic properties, a 5 T sample magnet is available.

 

Available Options

Accessories for your individual cryogenic requirements.

5 Tesla sample magnet

Smooth bipolar operation to study magnetic properties

Up to 4 RF connections on a puck

and up to 40 DC lines

Magnetic shielding

to investigate and operate sensitive quantum electronics or superconductors

Photograph of the L-Type Rapid Sample Puck

Typical Applications

Innovative cooling for state-of-the-art science and technology

Qubits

With first concepts dating back to the 1980s, superconducting circuits are today one of the most promising technologies in the race to build a universal quantum computer. The key element in superconducting quantum circuits is the Josephson junction – a non-linear element that connects two superconducting islands by a weak link, which can be either an insulating or a metallic barrier. Superconducting quantum circuits offer individual control and readout, and their properties can be engineered by circuit design. During the past two decades, superconducting qubits experienced a rapid improvement of their coherence properties, resulting in the demonstration of several major milestones toward scalable quantum computing. To screen and characterize superconducting thin films and devices more efficiently, kiutra’s L-Type Rapid offers an extremely fast sample cooldown, combined with a large temperature range, and a base temperature as low as 100 mK.  

Schematic depiction of a Q-Bit State in an Energy Diagram and as an electronic circuit
schematid depticion of a race-track memory

Spintronic Devices

Researchers in the field of spintronics study and exploit the spin-charge coupling in metallic systems. Making use not only of the charge carriers’ charge but also of their spin allows, e.g., to build novel devices like racetrack memory or MRAM to save digital data. These technologies promise low-energy information storage, high reliability, performance, and capacity also at room temperature. However, to better understand the underlying physics and to develop novel materials for spintronic devices, low temperatures, high-frequency cabling, and magnetic field control at the sample position are required. The L-Type Rapid offers access to a wide temperature range from 100 mK to room temperature in a single, cryogen-free, and easy-to-use instrument. Optional upgrades such as a sample magnet, and additional RF and DC wiring allow to implement various experimental setups and low-temperature measurements.

Performance Data

Fast and hassle-free operation

Fast Sample Cooldown

The cumbersome and time-consuming operation of large and complex refrigerators is a bottleneck in the development of novel functional materials as well as next-generation quantum devices. The L-Type Rapid with its puck-based sample loader offers a fast and automatic sample cooldown to increase the sample throughput and thus accelerate the screening of material samples and quantum devices. The figure shows a typical time-temperature curve for our sample puck with a test device mounted, while cooling from room temperature to sub-Kelvin temperatures. In the first 1.5 hours, the puck is cooled to the cryocooler base temperature. After the puck is fully thermalized, the ADR cooling units can be charged. This process takes approximately 1 hour. Thereafter, the demagnetization cooling is started, and the system can be operated either continuously at temperatures as low as 300 mK, or at 100 mK for a limited hold time. Except for mounting the puck in the vacuum lock, the operation is automatic and can be controlled through our Python-based instrument control software.

Cooldown Curve of the sample puck in an L-Type Rapid Cryostat

Continuous Operation at 300 mK

Conventional adiabatic demagnetization refrigerators (ADR) allow only for “one-shot” cooling. By combining multiple ADR units, kiutra’s cryostats can provide both “one-shot” and additionally continuous sub-Kelvin cooling (cADR) independent of the supply with cryogens. In its standard configuration, the L-Type Rapid uses two ADR units to generate continuous cooling. The figure shows the temperatures of both ADR units running in cADR mode at 300 mK. While the first unit cycles between the 4 K main heat bath (provided by the cryocooler) and a temperature below the target temperature, the second unit controls the sample temperature. As a result, the sample stage can maintain a constant temperature of 300 mK with a typical temperature stability <0.1 %, and a slightly reduced stability <2 % when activating its heat switch to initialize the regeneration.

Plot, showing the continuous operation of the L-Type Rapid Cryostat at 300 mK.

Scope of Supply

We deliver fully equipped, turnkey solutions

Cryostat

Sumitomo RP-082B2 closed-cyle pulsetube cryocooler, 1W 4.2K, 40 W @ 45 K
Sumitomo F70H water-cooled indoor helium compressor, 20 m flexlines
Two ADR units for one-shot continunous operation:
  • 2 ADR magnets
  • 2 Heat switches
  • 2 Cooling media
Wide range pressure gauge
Integrated passive quench protection
User ports for custom integration:
  • 2 x ISO-F 100
  • 1 x ISO-KF 25

Instrument Control

Custom 19” electronics rack
kiutra Modular Control Unit (MCU):
  • Base Module
  • Power Module
  • Drive Module
  • 2x Load Module
  • Gas Handling Modul
kiutra Compressor Control Unit (CCU)
Temperature monitor
Temperature controller
Calibrated temperature sensor on sample stage
Temperature sensors on cryocooler cold stages and first ADR unit
Sample heater and warm-up heater
User PC with pre-configuration Python-based instrument control software and high-definition display
2x Digital high frequency magnet power supply
User breakout
Filtered temperature sensor breakout
Photograph of the L-Type Rapid Cryostat with opened Airlock Chamber

Standard Wiring

40 DC wires

Gas Handling

Pumping, purging and venting of cryostat and Sample Changer airlock chamber
Oil-free roughing pump
Turbomolecular pump

Sample Changer

Airlock Chamber with motorized sample transfer
Sample puck transfer cage
Additional pressure gauge
1 Sample Puck
1 Sample Puck Testing Station
ISO-F 100 Gate Valve

Tech Specs

L-Type Rapid

Schematic Depiction of the L-Type Rapid Cryostat
System size (cm)
(w x l x h)
cryostat
rack
compressor
93 x 94 x 210
60 x 80 x 210
54 x 45 x 50
System weight (kg)cryostat< 600
Residual field at sample stage (mT)< 0.05 (0.5 Gauss, 50 µT)
Vibration (µm)< 10 µm
Size of Sample Puck (mm)diameter (mm)ø 36
Sample cooldown time (hours)300 K – 4K
4 K – 0.1 K
total 300 K – 100 mK
< 1.5 (bare puck)
1.5
< 3
Cooldown time (hours)cryostat< 36 hours
Temperature range (K)0.1 – 300
Continuous temperature control (K)0.3 – 300
Cooling power (µW)@500 mK
@ 1K
50
160
Operation time (hours)@100 mK3
Temperature stabilitytypical
while switching stages
< 0.1 %
< 2 %

Do You Need Further Information?

Schedule a call with our experts and download our brochure

Our team is experienced in many fields of low-temperature research. We are happy to learn more about your requirements and support you in finding your optimal cooling solution.
Get our brochure for the benefits and key specifications of the L-Type Rapid.