Göttingen 2025 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 92: Detectors VIII (Gaseous Detectors)

T 92.5: Vortrag

Freitag, 4. April 2025, 10:00–10:15, VG 1.102

Research and Development of an Inverted RICH Detector — •Daniel Grewe, Otmar Biebel, Valerio D'Amico, Stefanie Götz, Ralf Hertenberger, Eshita Kumar, Nirmal Mathew, Nick Schneider, Chrysostomos Valderanis, and Fabian Vogel — LMU München

In high-energy physics experiments, Ring Imaging Cherenkov Detectors (RICH) play an important role in identifying charged particles with known momenta. An inverted RICH detector takes a novel approach by reconstructing the momentum of a known particle through the measurement of its Cherenkov cone. A previous prototype employs a Lithium Fluoride (LiF) crystal to generate Cherenkov photons, which are converted to electrons via a Cesium Iodid (CsI) photocathode. The electrons are detected using a resistive strip Micromegas. While functional, this prototype requires further optimization. The CsI photocathode is highly sensitive to humidity, prompting the exploration of Diamond-Like Carbon (DLC) photocathodes as robust alternatives. To enhance the efficiency of detecting electrons generated in the photocathode, various counting gases are examined.

This talk will introduce the fundamental principles behind the inverted RICH Detector and highlight the latest developments in its prototype design, offering insights into the challenges and innovations shaping its evolution.

Keywords: Micromegas; Cherenkov Detector