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SEM Sentinel - SEM Performance Measurement System, Part 1



Alice V. Ling, Andras Vladar, Bradley N. Damazo, M A. Donmez, Michael T. Postek


This report describes the current design of a system for monitoring the performance of several major subsystems of a scanning electron microscope (SEM). The following subsystems and the associated functional parameters will be monitored. 1) Vacuum system with pressure as a function of time being recorded for the electron-optical column (gun chamber), the specimen chamber, and the sample-loading unit. 2) Several components of the wafer handling system will be timed. 3) The electron gun emission currents and other signals to monitor focal properties of the condenser and objective lenses may be used to correlate with image quality. Experiments are described for tests involving diagnosis of the vacuum system.
NIST Interagency/Internal Report (NISTIR) - 6498
Report Number


condition-based monitoring, data acquisition, diagnostic system for SEM, LabVIEW


Ling, A. , Vladar, A. , Damazo, B. , Donmez, M. and Postek, M. (2000), SEM Sentinel - SEM Performance Measurement System, Part 1, NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD (Accessed February 27, 2024)
Created April 1, 2000, Updated February 19, 2017