May 24 – 28, 2021
America/Vancouver timezone

Development of high rate capable and ultra-low mass Resistive Plate Chamber with Diamond-Like Carbon

May 25, 2021, 10:24 AM
Parallel session talk Sensors: Gaseous Detectors Sensors: Gaseous Detectors


Atsushi Oya (University Of Tokyo)


A novel background identification detector is under development for the MEG II experiment, aiming for further sensitivity improvement in the $\mu\to e\gamma$ search. This detector needs to detect MIP positrons in a high-intensity low-momentum muon beam up to $10^8~\mu/\text{s}$. Hence, ultra-low material budget and high rate capability are required.

The detector under development is a new type of Resistive Plate Chamber (RPC) with thin-film resistive electrodes based on Diamond-Like Carbon coating instead of glasses which are widely used in the conventional RPCs. A high efficiency (>90%) and a good timing resolution (~250 ps) for MIP particles are shown to be achievable with a multi-layer configuration. The performance measured with prototypes including the high rate capability for low momentum muon beam will be presented.

Primary author

Atsushi Oya (University Of Tokyo)


Kei Ieki (University of Tokyo (JP)) Atsuhiko Ochi (Kobe University (JP)) Rina Onda (University of Tokyo) Wataru Ootani (ICEPP, University of Tokyo) Kensuke Yamamoto (The University of Tokyo)

Presentation materials