Products X-ray
« Back to Products

Diacell© One20DAC

Very wide angle DAC for X-Ray Applications 

Fitted with 4mm Boehler-Almax anvils (P01848) mounted on conical WC seats

Extra large aperture (120 degrees) – diamond anvil cell for X-Ray and optical spectroscopy.

Product Description

The One20DAC has been designed with the largest aperture available on the market in mind. By providing a physical angle of 120 degrees on both sides of this diamond anvil cell, it makes it particularly suitable for Single Crystal X-Ray diffraction as it enables to have access to a very large reciprocal space unequalled whilst carrying out measurements under pressure. When used for optical spectroscopy, the One20DAC is also particularly attractive for Brillouin spectroscopy  as the large aperture gives a wide scattering angle and improved resolution of Brillouin spectra.

The One20DAC uses a combination of large 4.00mm Boehler-Almax anvils supported by thin WC conical seats.  This feature provides the 120degrees physical aperture of this cell. X-Ray characterisation of the cell on a beamline has shown that the effective aperture of the cell with a gasket is a very impressive 112 degrees (courtesy of James Walsh-Steve Jacobsen – Norhtwestern University, IL, USA).

In turn, this combination gives the benefit of a very thin DAC, making it particularly suited to environment where space is at a premium such as on a beamline. The thickness of the One20DAC is approximately 15.7mm. The working distance is also very short, in turn providing a large NA of 0.87 for optical measurements and observation.

The alignment of the diamond anvils is achieved by a combination of high precision machining of the parts and some lateral adjustment screws for both bottom and top seats.

Finally the pressure is increased via some left handed (x2) and right handed (x2) screws pressing on a stack of loading springs providing a smoother control of the force applied on the diamonds.

Note: This diamond anvil cell is not supplied with gasket blanks which can be ordered separately from Almax easyLab.


This cell is ideal for X-Ray diffraction and related work.


Cell Material Vascomax 300
Anvil Support Plate Tungsten Carbide
Pressure Mechanism Screw drive (Left-Right handed)
Recommended P Range ~50 GPa (*)
Temperature Range Room Temperature
Top Angle X-Ray: conical 120º
Bottom Angle X-Ray: conical 120º
Lateral Access N/A
Heating Resistive heating (optional Tmax = 250 C - See A55100)
Cooling N/A
DAC Diameter 48 mm
DAC Height 16 mm 
Working Distance to Sample 9/7 mm (upper/lower side)
Numerical Aperture 0.87
Interfacing Solution Via mounting pin supplied

(*) Maximum pressures in DACs vary with the culet size of the anvils, pressure transmitting media, gasket material,... Consult us for pressures above the recommended P range.
Almax easyLab is committed to its policy of continuous improvement.
Specifications may change without notice.
easyLab and Diacell are registered trademarks of Almax easyLab Ltd.


ADXD | EXAFS | Fluorescence | Raman | X-Ray
50 GPa
Room Temperature

Diacell© One20DAC