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Diacell® CryoDAC-ST

Micro-spectroscopy, Pmax = 30 GPa, Tmin = 4 K, WD = 8.5 mm, A = 52°

Diacell® CryoDAC Series

  • Specially engineered to fit seamlessly onto the sample holder of the Janis ST-500 Cryostat
  • The height of this DAC and the very short working distance ensure that the sample is located very close to the observing top window of the cryostat
  • The cell was originally designed for micro-Raman measurements but it is also suitable for any other micro-spectroscopy technique
  • The Diacell® ST-DAC System is the turn-key version including both CryoDAC-ST and the Janis ST-500 Cryostat
  • The Diacell® CryoDAC-ST has a numerical aperture of 0.44 and it enables electrical work via its side ports
  • Maximum pressures of up to above 30 GPa may be obtained with Diacell® CryoDAC-ST


SKU: A81200

For more info, quotation or call: Contact us


The Diacell® CryoDAC-ST was originally designed for micro-Raman work in the continuous flow cryostat, Janis ST-500.  However, this cell can also be used for other micro-spectroscopy techniques, such as imaging and high resolution photoluminescence under high pressure.  Provisions have also been made to enable electrical work.

The Diacell® cryoDAC-ST has been engineered to fit seamlessly onto the sample mount of the Janis ST-500.  For more information about this specific microscopy cryostat, please refer to Janis’ webpage.

You can see the cell mounted in the cryostat on the Diacell® ST-DAC System.


Cell Material High Strength Beryllium Copper Alloy
Anvil Support Plate Beryllium Copper
Pressure Mechanism Screw Drive
Maximum Pressure 30 GPa
Temperature Range 4 K
Top Angle 52° along vertical axis
Bottom Angle 16° along vertical axis
Lateral Access N/A
Heating N/A
Cooling Via Cryostat
DAC Diameter 21 mm increasing to 34 mm
DAC Height 34 mm
Working Distance to Sample 8.5 mm
Numerical Aperture 0.44
DAC Weight 120 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

Brochure CryoDAC-ST

Technical Drawing

Please contact us for further details on the engineering drawings.


2018 – Lima et al. – Communication: Glass transition and melting lines of an ionic liquid


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
2.5 mm Diacell® design diamond anvil, force fitted in BeCu rings for easy fitting in
the CryoDAC-ST.
Product code: [P00131], [M50011]
Cryoloader Clamp Kit
Kit for cryogenic gas loading using the Diacell® Cryoloader.
Product code: [A30300]
Gasket Blanks 
5 mm diameter and 0.30mm thick BeCu gasket blanks
Product code: [P00537]
Ruby Powder
Variable size ruby grains for pressure calibration
Product code: [P00104]


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

Culet size (µm) 200 300 400 500 600 800 1000
Pmax (GPa) (*) N/A 48 31 20 14 8 5

(*) 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.



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