Göttingen 2025 – scientific programme

Parts | Days | Selection | Search | Updates | Downloads | Help

T: Fachverband Teilchenphysik

T 71: Detectors VI (Gaseous Detectors)

T 71.5: Talk

Thursday, April 3, 2025, 17:15–17:30, VG 1.101

GridPix Production: Latest Developments in Bonn — •Sabine Hartung, Yevgen Bilevych, Jochen Kaminski, and Klaus Desch — Physikalisches Institut Universität Bonn

GridPix detectors are Micropattern Gaseous Detectors designed for high-resolution imaging and the detection of single primary electrons. They incorporate a highly pixelated readout ASIC chip, such as the Timepix or Timepix3, which feature 256 x 256 pixels with a pitch of 55 x 55 µm. To minimize the probability of chip damage by sparks an additional protective layer is applied to the surface of the chip. The Micromegas-like gas amplification stage is constructed on top of the chip by photolithographic postprocessing.

Until recently, this wafer-based production process was carried out at the Fraunhofer Institute IZM in Berlin. Now it is being transferred to the Forschungs- und Technologiezentrum Detektorphysik (FTD) in Bonn. The advancements of this technology at the FTD in Bonn enables not only the continuation of the established process but also the adoption of more flexible production techniques, such as new maskless methods, which allow for greater optimization possibilities.

This presentation will provide an overview of the general technological steps and outline the current status of production at the Bonn facility.

Keywords: Tracking Detector; GridPix