Our Product:

Multichannel X-ray detectors in a wide variety of shapes and sizes, to allow large area spectroscopy with high quantum efficiency and good energy resolution. Integrated readout electronic is available on request.

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A 12-channel ring structure
for high intense microbeam XRF.

Detail of a 5 cm2 large-area detector
for gamma ray imaging.

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Key Parameter:

Active Area

40 mm2 - 5 cm2

Sensitivity

> 90% f. 200 eV - 15 KeV

Maximum Count Rate

up to 107 cps

Energy Resolution

typ. 128 eV - 145 eV FWHM  @ MnK, -200C

Peak-to-Background

2000 - 10000  @ MnK, -200C

 

 

Short Detector Description:

For some applications it is very interesting to design radiation detectors which follow a given shape and cover a large area. For this reason Multichannel SDDs have been developed.

They combine the advantages of the Silicon Drift Detector with

  • a large area coverage (up to 5 cm2),
  • enhanced count rate capability (up to 107 cps),
  • and consistently good energy resolution
    (down to 128 eV @MnK, -20°C).

Due to their module character multiple SDDs are able to answer with a very flexible design to the specific demand of the customer.

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Measurements taken by Antonio Longoni at Politecnico di Milano with the 4-element droplet shaped SD3.

For read out of the detector cells compact but discrete electronics is available as well as specifically developed integrated electronics comprising preamplifier and shaper/multiplexer modules (ASIC).

More details and examples of application of the Multichannel SDDs are described under Detectors and in the Literature.

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Detector Types:

The Multichannel SDD is available
  • with classically hexagonal shaped cells

    in sizes between 5 mm2 and 7 mm2
    and overall active areas between
    0.3 cm2 and 5 cm2
    with energy resolution of typ. 140 eV,
    -  in linear shapes for TXRF or WDS,
    -  in compact lumped forms for
       high count rates e.g. at a synchrotron
    -  for gamma ray imaging
       in combination with a scintillator

 
  • in ring shaped forms

    with cell sizes from 5 mm2 to 15 mm2
    and overall active areas of 60 mm2
    dedicated to cover a large detection angle
    with a hole for the exciting radiation as
    -  an electron beam in a SEM
    -  X-rays guided by a polycapillary in XRF

  • with droplet shaped cells (SD3)

    with cell sizes from 10 mm2 to 15 mm2
    and overall active areas of about 50 mm2
    for high resolution spectroscopy
    with energy resolution of typ. 130 eV,
    -  in compact lumped forms
    -  or in a ring shaped arrangement.

 For further details consult Detectors or Sales Information.

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Terms of Delivery:

The Multichannel SDDs are sold as chips or integrated detector modules.

For operation Multichannel SDDs are mounted onto a ceramic carrier board together with a Peltier element into an appropriate housing. Depending on the size and type of the SDD different formats of ceramic carriers and housings are available. We adapt our design to the customer's demands. More information is provided on request.

Prior to delivery the detector module is analysed in detail with regard to spectroscopic performance, temperature behaviour and stability.

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Electronic Read Out:

As in all single SDDs the first amplification step (transistor) is integrated into the device. Accordingly the electronic readout of Multichannel SDDs is in agreement with that of Single SDDs.

The customer may use compact but discrete electronics which is avalilable or ask for integrated electronics comprising preamplifier and shaper/multiplexer modules (ASIC) which has been specifically developed.

For further details contact Sales Information.

 

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SDD Multi Cells