31 August 2026 to 4 September 2026
Masarykova Kolej Congress Centre, Czech Technical University in Prague
Europe/Prague timezone

From CMS GEM Mass Production to microRWELL R&D: Status of the Korean MPGD Infrastructure

2 Sept 2026, 17:10
20m
Oral presentation Production techniques Plenary Session

Speaker

Inseok Yoon (Seoul National University (KR))

Description

As one of the few facilities globally capable of large-area GEM production alongside CERN MPT, the Korean MPGD infrastructure has recently achieved a major milestone. Late last year, we successfully completed the mass production of 1,040 high-quality GEM foils as the second supplier for the CMS Phase-2 upgrade. Building upon this extensive experience in large-scale manufacturing and quality control, our facility is now expanding its technological expertise toward the development of microRWELL detectors.

The decision to expand into microRWELL development was strategically motivated by its production process being fundamentally analogous to that of GEM foils, allowing for an efficient leverage of our existing infrastructure and technical expertise. To mitigate current global supply bottlenecks, we are conducting comprehensive R&D focused on streamlining fabrication steps. Key areas include establishing domestic production of DLC-sputtered FCCL in collaboration with a Korean company and the development of a shadow-mask-based DLC patterning method to enhance mass-production yield. Furthermore, we are investigating wellization via polyimide etching using monoethanolamine, characterized by its lower inhalation toxicity, through collaboration with an industrial partner.

In parallel with these technological developments, a significant organizational restructuring is underway. The MPGD production infrastructure, formerly operated under Korea CMS—a consortium of Korean universities collaborating in the CMS experiment at CERN—is being integrated into the Institute for Rare Isotope Science (IRIS). This transition marks the establishment of a centralized MPGD production and R&D hub in Korea, well-positioned to contribute to future international collaborations. The current status and results of our R&D activities, as well as the progress of the organizational restructuring, will be presented.

Name of the speaker Inseok Yoon
Eligible for the Georges Charpak Young Scientist Award. no

Author

Inseok Yoon (Seoul National University (KR))

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