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Diacell® OmniDAC-LT

Optical and X-ray Spectroscopy, Pmax = 100 GPa, Tmin = 4 K, WD = 12 mm, A = 50°
  • The Diacell® OmniDAC-LT is made of high - strength beryllium copper alloy and is the cryogenic version of the OmniDAC
  • Maximum pressures of up to above 100 GPa may be obtained with the Diacell® OmniDAC-LT
  • Having a numerical aperture of 0.42 the cell is useful for X-ray and optical measurements at low temperatures
  • Being gas membrane driven means that the pressures within the OmniDAC-LT can be changed whilst the sample is mounted in the spectrometer or X-ray stage
  • The diamond anvil cell can be integrated in a variety of cryostats and may be supplied as a turn-key high pressure and low temperature system (Diacell® CCS-DAC System or Diacell® PT- DAC System)

SKU: A53000

For more info, quotation or call: Contact us


This is the cryogenic version of the Diacell® OmniDAC and differs from it only in being made of BeCu alloy.
The Diacell® OmniDAC-LT was designed for both X-ray diffraction and optical studies taking advantage of the gas membrane drive mechanism. Extended lateral sight holes allow the observation of scatter at directions normal to the cell axis.

The gas membrane drive requires, additionally, the Diacell® GM Controller containing valves, couplings, pressure measurement and digital display modules.

Note: If the diamond anvil cell is to be used a low temperature, a low temperature relief valve will need to be fitted on the gas line. This low temperature relief is available from Almax easyLab alongside our GM or iGM controllers option.


The Diacell® OmniDAC-LT was designed for both X-ray diffraction and optical studies.


Cell Material High Strength Beryllium Copper Alloy
Anvil Support Plate Tungsten Carbide
Pressure Mechanism Gas Membrane
Maximum Pressure >100 GPa
Temperature Range < 10 K
Top Angle Conical 50º
Bottom Angle Conical 50º
Lateral Access 16° of 2θ is accessible
Heating N/A
Cooling Via Cryostat
DAC Diameter 51 mm
DAC Height 35 mm
Working Distance to Sample 12 mm
Numerical Aperture 0.42
Interfacing Solution TBC
DAC Weight 350 g

Maximum pressure is dependent upon the culet size of the anvils. Almax easyLab is committed to its policy of continuous improvement. Specifications may change without notice. easyLab and Diacell are registered trademarks of Almax easyLab.


We have compiled a series of technical documents (brochures, articles, technical drawings, …) which you might find useful to help you understand this product better.

Technical documentation


Technical Drawing

Please contact us for further details on the engineering drawings.


2007 – Haskel et al. – Instrument for x-ray magnetic circular dichroism measurements at high pressures

2017 – VanGennep et al. – Pressure-induced superconductivity in the giant Rashba system BiTeI

Spares, Accessories and Options

Our diamond anvil cells are aligned and mechanically tested before leaving our factory on their way to your laboratory.

They also come supplied with the required basic tooling, including gasket blanks, to use them. All is contained in the transportation casing to move around laboratories easily.

Below you can find some of the accessories and spares you might also consider. If you cannot find what you need, please do not hesitate to contact our team.

Diamond anvil fitted in ring Diamond Anvils
3.1 mm Diacell® design diamond anvils, fitted in BeCu rings for easy fitting in the OmniDAC -LT
Product code: [P00132], [M50005]
Anvil Support Plate
Seat, 50 Degrees WC Non-Magnetic (tungsten carbide with 6% nickel)
Product code: [P00125]
Gas Membrane
Gas membrane suitable for the Diacell® OmniDAC-LT
Product code: [A76020]
Diacell® Gearbox
Gearbox for the Diacell® Omni-DAC-LT. Mainly used as gasket pre-indentation tool
Product code: [A54100]
Clamps Kit OmniDAC-LT
Clamps kit for the OmniDAC-LT, to be used in conjunction with the Diacell® Cryoloader
Product code: [A30060]
OmniDAC-LT, GM Decompression Kit
For a better pressure control in particular at low temperature and when releasing the pressure of the diamond anvil cell
Product code: [A53010]
Gas loading kit
Product code: [A96500]
Cryostat Interfacing Holder
Customised chrome-plated copper mounting block for cryostat
Product code: [to be confirmed upon application]
Gasket Blanks
10 mm/ 0.25 mm thick BeCu gasket blanks
Product code: [P01314]


What is the maximum pressure I can achieve with the OmniDAC-LT and a given culet size?

Culet size (µm) 200 300 400 500 600 800 1000
Pmax (GPa) (*) 114 98 63 41 28 16 10

(*) The Pmax values are only indicative. The maximum pressure achievable with a DAC is influenced by many others experimental parameters, like the gasket characteristics (material, thickness and hole size) or the pressure transmitting medium.

Can one use the Diacell OmniDAC-LT for high pressure gas loading?

Yes. This diamond anvil cell is designed to accommodate some clamping screws (supplied as standard with the cell) running through the cylinder and enabling the piston to be fixed mechanically after a high pressure gas loading. The exact details of the gas loading and loading mechanism need to be engineered and Almax easylab offers a loading mechanism kit for such application. Consult us.

1 review for Diacell® OmniDAC-LT

  1. Isaiah Lim

    This product is excellent for conducting high-pressure and low-temperature measurements using diamond anvils. It boasts a well-designed and precisely machined construction. I mostly use it for electrical resistivity measurements under high pressure, but it’s versatile enough for magnetic measurements as well, thanks to the high-quality BeCu materials used. The chromium coating on the piston side, combined with the smoothly fitting cylinder, minimizes wobbling, ensuring precise high-pressure conditions. I highly recommend this product for high-pressure DAC transport and X-ray spectroscopic measurements.

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