
SDHe
Measurement System
The SDHe Measurement System is a compact helium system with a very fast turnaround time.
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.
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 experimental space and shield set.
| SDHe | SDHe (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 diameter | 166 mm | 166 mm |
Options
3.0
SDHe
1K System
Frame Options
Shield options
Gas Handling System options
Gas Handling System & Control Software Generation 2
Gas Handling System Generation 2
Our new Gas Handling System delivers next-level control with unprecedented ease-of-use, class-leading safety and enhanced reliability.
Control Software Generation 2
Control Software Generation 2 completely redefines the experience of controlling cryogenic measurement systems.
Related Products
Cryogenic Measurement System Options
We offer various options for our Cryogenic Measurement Systems to optimize them for different uses and experimental needs.
Measurement Infrastructure
Bluefors offers fully-integrated, scalable measurement infrastructure to provide the most reliable turnkey setups for quantum applications.
Magnets
Bluefors offers a range of integrated, cryogen-free superconducting magnets for our cryogenic measurement systems.
Layout and Facility Requirements
4.0
SDHe
1K System
Layout Overview

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
First Generation 2 Systems Installed at the University of Copenhagen
Gas Handling System Gen. 2 – Designed for Performance
Control Software Generation 2 – Cool Power at Your Fingertips
Cryomech PT310-RM Integrated Into Bluefors Dilution Refrigerators
1000th Bluefors system has been installed
Quantum Applications in the Bluefors Measurement System
Explore Our Services
Total System Care
Total System Care is tailored to your specific needs, with the features and services that are designed to best support your systems.
Customer Care
We support our customers throughout the lifetime of their system, providing dedicated care to find solutions for any issues.
Bluefors Lab
Bluefors Lab provides easy and convenient access to a cryogenic measurement system for startups, research groups, and other organizations.
Gas Handling System Upgrade
Bring all the advantages of our new Gas Handling System to older systems by upgrading to Gas Handling System Generation 2.
Pulse Tube Cryocooler Upgrade and Refurbishment
Our pulse tube cryocooler upgrade and refurbishment service helps you to maximize the performance of your systems and extend their lifetime.
Health Check
Health Check help you assess the health of your cryogenic measurement system, ensuring it operates at its best performance.
Training
We offer a training program to support users in operating and maintaining their systems throughout the lifetime of their Bluefors systems.
Relocation
Relocation service helps your when you need to move your lab and its cryogenic measurement systems to a new facility.
Spare Parts
Our spare part stock helps you to access genuine Bluefors parts quickly to maximize the uptime of your systems.

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