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arXiv · 1711.07555

Towards Gotthard-II: Development of A Silicon Microstrip Detector for the European X-ray Free-Electron Laser

Jiaguo Zhang·Marie Andrä·Rebecca Barten·Anna Bergamaschi·Martin Brückner·Roberto Dinapoli·Erik Froejdh·Dominic Greiffenberg·Carlos Lopez-Cuenca·Davide Mezza·Aldo Mozzanica·Marco Ramilli·Sophie Redford·Marie Ruat·Christian Ruder·Bernd Schmitt·Xintian Shi·Dhanya Thattil·Gemma Tinti·Monica Turcato·Seraphin Vettera
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Abstract

Gotthard-II is a 1-D microstrip detector specifically developed for the European X-ray Free-Electron Laser. It will not only be used in energy dispersive experiments but also as a beam diagnostic tool with additional logic to generate veto signals for the other 2-D detectors. Gotthard-II makes use of a silicon microstrip sensor with a pitch of either 50 {\mu}m or 25 {\mu}m and with 1280 or 2560 channels wire-bonded to adaptive gain switching readout chips. Built-in analog-to-digital converters and digital memories will be implemented in the readout chip for a continuous conversion and storage of frames for all bunches in the bunch train. The performance of analogue front-end prototypes of Gotthard has been investigated in this work. The results in terms of noise, conversionngain, dynamic range, obtained by means of infrared laser and X-rays, will be shown. In particular, the effects of the strip-to-strip coupling are studied in detail and it is found that the reduction of the coupling effects is one of the key factors for the development of the analogue front-end of Gotthard-II.

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Jiaguo Zhang, Marie Andrä, Rebecca Barten, Anna Bergamaschi, Martin Brückner, Roberto Dinapoli, Erik Froejdh, Dominic Greiffenberg, Carlos Lopez-Cuenca, Davide Mezza, Aldo Mozzanica, Marco Ramilli, Sophie Redford, Marie Ruat, Christian Ruder, Bernd Schmitt, Xintian Shi, Dhanya Thattil, Gemma Tinti, Monica Turcato, Seraphin Vettera. 2017-11-20. Towards Gotthard-II: Development of A Silicon Microstrip Detector for the European X-ray Free-Electron Laser. https://doi.org/10.1088/1748-0221/13/01/p01025

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