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Prof. Dr. Michael Köhl
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Physikalisches Institut
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Tel.: +49-228-73 4899
Fax: +49-228-73 7869

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Phone: +49-228-73 2341
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You are here: Home News Picture of the Quarter 2nd Quarter 2014 - DEPFET Matrix

2nd Quarter 2014 - DEPFET Matrix

The first large, thin, multi-chip DEPFET (DEpleted P-channel Field Effect Transistor) detector arrived in Bonn for further optimization and characterization. The sensor consists of roughly 92 thousand DEPFET pixels arranged in 192 columns and 480 rows with a pitch of 50 x 75 um, resulting in a total sensitive area of 36.0 x 9.6 mm.

All the necessary processing chips for row-selection, digitization and zero-suppression are directly mounted on the all-silicon module, surrounding the 50 um thin active volume.For scale comparison, in the picture there is a one Euro-Cent coin next to the detector prototype.

The DEPFET technology will be used for the two innermost layers of the Belle II vertex detector in the new Japanese super flavour factory, and besides having numerous applications in non high energy physics experiments, due to its outstanding properties it is also a solid candidate for the pixel detector of the future International Linear Collider.

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