Multiple Sigray x-ray optics can be mounted in a turret to allow optimized performance for multiple applications within the same system.

Multiple Sigray x-ray optics can be mounted in a turret to allow optimized performance for multiple applications within the same system.

customized synchrotron paraboloidal x-ray mirror lens

Sigray has developed a new, high resolution x-ray optics for synchrotron microbeam applications. The innovative optic provides:

  • High resolution with <0.2 - 5 µm spot size
  • Large numerical aperture (enabling 4X higher flux at the sample than a KB mirror)
  • High efficiency
  • Achromatic focusing, ideal for microbeam applications requiring energy tunability such as x-ray absorption spectroscopy
  • Flexibility in beamline design: a small form factor enables up to 4 optics to be used within the same beamline, with each optic designed for a different energy, resolution, etc.
  • Pricing: starting at $20k and up for the lens, with significant cost savings compared to KB mirrors of similar resolution, especially when considering the associated alignment, mounting, and stability apparatuses 

Sigray's optics are optimized for straightforward replacement of optics in existing synchrotron beamlines to upgrade their performance and for the development of new, short beamlines with multiple x-ray methods within the same beamline.  


x-ray applications of the paraboloidal x-ray optic

How will Sigray's x-ray mirror lens improve your beamline performance?

Sigray's synchrotron optics can be customized for a wide variety of applications, ranging from low energy (ARPES, ptychography, PEEM) and mid-energy to high energy applications (TXM, microXRF, microXRD, confocal, XAFS, etc.)

Sigray's synchrotron optics can be customized for a wide variety of applications, ranging from low energy (ARPES, ptychography, PEEM) and mid-energy to high energy applications (TXM, microXRF, microXRD, confocal, XAFS, etc.)

A turret of multiple optics can be used within the same beamline, allowing access to one or more of the above techniques (e.g. ARPES, confocal, etc.)


Advantages of the paraboloidal Mirror Lens for Beamline Upgrades and Development


Why Sigray’s Synchrotron X-ray Mirror Lens?

Comparison of Sigray's paraboloidal x-ray capillary optics versus conventional synchrotron optics. More information on comparing the lens to KB mirrors can be found below, and vs. CRLs and ZPs by clicking on the image above.

Comparison of Sigray's paraboloidal x-ray capillary optics versus conventional synchrotron optics. More information on comparing the lens to KB mirrors can be found below, and vs. CRLs and ZPs by clicking on the image above.

A key determinant of the performance capabilities of a microanalytical beamline is the optics employed. Sigray’s paraboloidal x-ray mirror lens are total-reflection lenses that are designed to replace, and is often a superior alternative to, standard synchrotron optics such as Kirkpatrick-Baez (KB) mirrors, compound refractive lenses (CRLs), and zone plates. 

Below, a comparative analysis between Sigray's optic and KB mirrors is provided. Additional information comparing Sigray's optics to zone plates and CRLs can be found here


COMPARISON OF SIGRAY’S X-RAY MIRROR LENS WITH KB MIRRORS

KB mirrors are commonly employed in beamlines in part because, unlike CRLs and zoneplates, they are achromatic to enable use with a wide range of x-ray energies. 

Compared to KB mirrors, Sigray’s paraboloidal x-ray mirror lens offers:

1. Higher Flux: >4X larger flux due to 2X larger numerical aperture (flux at the focus is proportional to the square of NA). The optic is not only a single-bounce x-ray capillary, but its axial symmetry captures a larger cross-section of the x-ray beam.

The axial symmetry of Sigray's optics allows much greater capture of the x-ray beam for substantially higher flux delivered to the sample.

The axial symmetry of Sigray's optics allows much greater capture of the x-ray beam for substantially higher flux delivered to the sample.

2. Stable Focal Spot: The focal length of Sigray’s lens is substantially shorter (10-50 mm). This significantly reduces the problems of focal spot positional variation due to source or beamline vibration that limit KB mirror performance.

3. Flexibility in Technique Development and Future Upgrades: Due to the small and lightweight form factor, multiple paraboloidal mirror lenses can be used on a single beamline, each optimized for specific parameters or for different techniques. Development of beamlines using the Sigray mirror lens also provides an easy path for future upgrades for additional optics and functionality.   

4. Cost-Effective Beamline Development: For microfocus beamlines the source needs to be demagnified by a large factor. Since KB mirror pairs have large focal lengths (room must be provided for the downstream mirror), demagnification requires long, expensive beamlines. In comparison, the Sigray paraboloidal condensers enable the development of shorter, cost-effective, multi-functional microfocus beamlines.

5. Low Weight & Ease of Operation for Scanning: Straightforward alignment and low weight enable scanning of the optic, which is particularly important when the sample is difficult to move. 


Standard specifications

Sigray's synchrotron optics is available with a wide range of specifications for different beamline applications.  

Standard specifications are as follows:

A downloadable brochure on Sigray's optics can be found here.

A downloadable brochure on Sigray's optics can be found here.

  • Type: Achromatic paraboloidal x-ray mirror lens
  • Spot Size: <0.2 to <10 µm (dependent on working distance and energy)
  • Reflecting Surface: Coated with platinum (other materials upon request)
  • Energy Range: 0.1-60 keV
  • Angular Range: ~3X critical angle of glass
  • Strehl Ratio: 75%
  • Working Distance: 2 mm to 10 cm, depending on desired resolution and application
  • Price: $20k and up, depending on specifications

Additional optional configurations may include complete assemblies coupled to elements such as monochromators.


Request more technical information and additional comparisons

If you are interested in additional information, please fill out the following form to download a brochure with information on the optic or to speak to one of our physicists. 

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For products that implement our optics, visit: 

  • Sigray XCITE Microbeam: Couples a high brightness source with a high resolution x-ray optic to enable SEM micro x-ray fluorescence and instrumentation development
  • Sigray AttoMap MicroXRF: Highest performance microXRF system with outstanding resolution and sensitivity performance capabilities