He System

Product Overview

He System

Cryostat without dilution unit

The He System is a compact, entry level (1K) helium system, that embodies a SD|LD cryostat without a dilution unit. It allows you to conduct experiments down to 3 K or 0,5 K, with an opportunity of upgrading it to a full dilution refrigerator at any later stage. It takes only 3-4 days on-site installation. All options, e.g. magnets, wiring and vibration isolation are compatible.

High and continuous cooling power

The main advantage of the He System is its gas handling system of robust dimension, which provides system’s high and continuous cooling power. In addition, the He System can be operated with either helium-3 or helium-4 gas isotopes. Typical base temperature, below 500 mK, is easily achievable with 7 liters of the helium-3 as an operational gas, and below 900 mK with helium-4 operational gas.

Temperature Controller

The Bluefors Temperature Controller enhance the user experience of our cryogenic systems. With a modern and intuitive user interface, you gain direct control and overview of the system’s temperature status.

The Bluefors Temperature Controller is fully-integrated to all dilution refrigerator systems delivered from early summer 2020.

Read more about the Temperature Controller here.

LDHE system


  • 520 mm sample space height and 303 mm 1K flange diameter
  • approx. 12 hours cool-down time of the empty system
  • 5 x KF40 and 2 x KF63 line of sights (LOS) ports for wiring

Bluefors provides two different models: LD250HE and LD400HE. The key difference between these systems is gas handling system used. The LD250HE can be further upgraded to the full dilution fridge LD250 and similarly LD400HE to LD400.

SDHE system


  • without still shield
  • 350 mm sample space height and 170 mm 1K flange diameter
  • less than 10 hours cool-down time of the empty system
  • 2x KF40 and 1x K25 ports for wiring


Options

Options

Optical Ports

We offer direct optical access to the sample space. The optical ports can be equipped with different window materials and are available in different sizes and configurations.

Magnetic Shielding

We offer magnetic shielding that can be fitted directly to the system (e.g. a magnetic shielding metal cylinder with one end closed inside the lower section of the vacuum can). For magnetic shielding we work together with Amuneal Manufacturing Corp.

4K Heater Kit

Fully automated fast warm-up option, which allows overnight warm-up for our standard LD systems.
Service Packages and Extended Warranty are available upon request


Technical

Technical Specifications

LDHE (HE3) GUARANTEED EXPECTED

Base temperature

430 mK
415 mK

LDHE (HE4)

GUARANTEED
EXPECTED
Base temperature
830 mK
815 mK


Requirements

Technical Requirements

The basic requirements are 3-phase electricity, cooling water, 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.


https://bluefors.com/products/he-cryostat/

He System
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