29 July 2018 to 4 August 2018
Russian Academy of Sciences
Europe/Moscow timezone

Study on the double micro-mesh (DMM) gaseous structure as a photon detector

31 Jul 2018, 11:50
Blue Hall (Russian Academy of Sciences)

Blue Hall

Russian Academy of Sciences

Leninsky Prospekt, 32а Moscow 119071 Russian Federation
oral presentation [20+5 min] Photon detection for Cherenkov counters Photon detection for Cherenkov counters


Dr Ming Shao


Application of micro-pattern gaseous detectors to photon detection has been widely investigated over the past decades. In this talk, I will present a double micro-mesh (DMM) gaseous structure developed with a thermal bonding technique for this application. A detector prototype has been built with this structure and showed excellent performance for detecting single photons in various tests with X-rays and UV laser light. The gain of the gaseous structure can reach up to 10^6 for single electrons while maintaining a very low ion-backflow ratio down to 0.05%. The structure can maintain a stable gain of > 7×10^4 with a good energy resolution of 19% (FWHM) for 5.9 keV X-rays. The DMM has good potential to serve as photon detector in Cherenkov light detection, as well as for other applications, e.g. TPC readout, that require a very low level of ion backflow. The thermal bonding technique used in the development of DMM, including its advantages over conventional Micromegas fabrication methods, will also be briefly introduced.

Primary authors

Presentation Materials

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