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Oct 16 – 21, 2022
Marriott Newport News at City Center
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A Novel Quality Assurance Robot for RF Cavity Inspection System

Oct 18, 2022, 1:30 PM
1h 30m
Poster Poster Poster Session




Radiofrequency cavities are critical for accelerating beams at CERN, and their efficiency is in part due to the inner surface quality, which may be effected by various mechanical procedures such as welding. A detailed inspection is required to ensure the quality of manufacturing, but also for post mortem analysis. Ideally, this inspection should be non-destructive, and a new robotic system has been developed at CERN to perform this task. The Automated Robotic Inspection System (ARIS) autonomously meets, for the first time in the world, the needs of CERN to visually inspect the entire inner surface of radiofrequency (RF) cavities in LHC, Linac and FCC, and to detect any anomalies at short distance. This system is equipped with a liquid lens able to overcome depth of field (DOF) limitations, a high-resolution camera which ensures excellent quality photos regardless of the distance within the entire cavity, and an anti-collision mechanism that can immediately stop the inspection system, if required. ARIS is capable of performing three different scan modes in three different cavity types through a specialised user interface currently in development. This system is controlled using the CERN Robotic Framework - a robust software framework that is modular and used on all CERN inhouse robotic platforms.

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