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SDHe

Measurement System

The SDHe Measurement System is a compact helium system with a very fast turnaround time. 

Highlights
Technical Specifications
Options
Layout and Facility Requirements
Contact Sales

The SDHe Measurement System allows you to conduct experiments down to 1 K or 0.5 K. The different base temperatures depend on the helium isotopes used, with 1 K achieved using helium-4, and 0.5 K achieved with helium-3. The cooldown time of an empty system is less than 10 hours.

As a smaller and more affordable system, the SDHe does not require any layout planning, and can be installed by the user if desired. It’s also possible to upgrade to a Bluefors Dilution Refrigerator Measurement System at any later stage.

Product Highlights

1.0

SDHe

1K System

High, Continuous Cooling Power 

The SDHe System has a Gas Handling System of robust size, providing high and continuous cooling power. The system can be operated with either helium-3 or helium-4 gas isotopes. The typical base temperature, below 500 mK, is easily achievable with 7 liters of the helium-3 as an operational gas. Temperatures below 900 mK are achievable with helium-4. 

Very Fast Turnaround Time 

The system has a very fast turnaround time. The cooldown time of  an empty system is less than 10 hours. 

Three Access Ports 

  • 2 x KF40
  • 1 x KF25

Upgrade to a Dilution Refrigerator Measurement System

The SDHe Measurement System is an SD System without the dilution unit. It is possible to upgrade it to a Dilution Refrigerator Measurement System at any later stage. The upgrade can be completed with an on-site installation in 3–4 days. 

Temperature Controller

The Bluefors Temperature Controller enhances the user experience of our cryogenic systems. With a modern and intuitive user interface, you get direct control and overview of the temperature status of the system. The Bluefors Temperature Controller is fully integrated to the system. 

Read more about Bluefors Temperature Controller. 

Gas Handling System & Control Software Generation 2

Services

Total System Care

Total System Care enables you to focus on your own work – doing research and measurements. The service ensures that systems operate at the best possible performance level and with maximal uptime, without users needing to spend time maintaining the systems themselves.

Learn more

Technical Specifications

2.0

SDHe

1K System

Note: The cooling power is measured on the Evaporator Flange. The cooldown time to base temperature is measured on an empty system with a standard sample space and shield set. 

SDHeSDHe (He-3) SDHe (He-4) 
Base temperature 470 mK 920 mK 
Cooling power at 1 K 10 mW 
Cooling power at 0.7 K 10 mW 
Cooldown time  <10 h<10 h
Evaporator Flange diameter166 mm 166 mm 



Options

3.0

SDHe

1K System

Frame Options

Additional Vibration Isolation

Additional Vibration Isolation

We offer improved vibration isolation for experiments that are particularly sensitive to low frequency vibrations (< 1 kHz).
Sound Isolation

Sound Isolation

Improved sound isolation for systems situated in spaces that require quieter work environments.

Shield options

Magnetic Shielding

Magnetic Shielding

Magnetic shielding provides protection for samples from interference caused by magnetic fields.

Faster turnaround options

4K Heater

4K Heater

The 4K Heater is a fully automated fast warm-up option, which decreases the warm-up time for our cryogenic measurement systems.

Gas Handling System options

Industrial PC

Industrial PC

The high-performance industrial PC offers fully independent and versatile operation of the Bluefors dilution refrigerator measurement system.
Instrument Cart

Instrument Cart

The Instrument Cart can house supplementary equipment such as temperature controllers, power supplies, and rack-mounted electronics.
Redundant Main Circulation Unit

Redundant Main Circulation Unit

For added security, we offer a Redundant Main Circulation Unit to secure operation in atypical circumstances
Service Booster

Service Booster

The Service Booster is a dedicated turbomolecular pump for vacuum pumping, enabling more secure operation of the system.

Other options

Additional Sensors

Additional Sensors

Additional temperature sensors can be integrated into the system for comprehensive diagnostics and measurements.
Optical Access Ports

Optical Access Ports

Optical Access Ports offer direct line-of-sight access to the sample space.

Services

Customer Care

We support our customers throughout the lifetime of their system, providing dedicated care to find solutions for any issues. Our technicians and engineers are ready to help you wherever you are located, with prompt service delivered either remotely or on-site.

Learn more

Related Products

Layout and Facility Requirements

4.0

SDHe

1K System

Layout Overview

Bluefors SD System layout overview
1. Thermometry Unit, 2. Gas Handling System, 3. Cryostat and its support frame, 4. Pulse Tube Cryocooler compressors.

Each of our systems is designed to be installed to a specific location defined in advance. A separate layout drawing is made for each Bluefors system, which should always be referred to for exact dimensions.

Facility Requirements

The basic requirements are 3-phase electricity, cooling water, and compressed air. The full list of requirements and specification details can be found in the Pre-Installation Guide, please contact our sales team for a copy.

See also

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