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TY - CONF AU - Reece, C.E. AU - Spradlin, J.K. AU - Trofimova, O. AU - Valente-Feliciano, A-M. ED - Michel, Peter ED - Arnold, André ED - Schaa, Volker RW TI - Identifying Specific Cryomodule and Cleanroom Particulate Contamination: Understanding Legacy Issues and Providing New Feedback Standards J2 - Proc. of SRF2019, Dresden, Germany, 30 June-05 July 2019 CY - Dresden, Germany T2 - International Conference on RF Superconductivity T3 - 19 LA - english AB - While the techniques used to provide "UHV clean" and "particle-free" beamline components, including SRF cavities, continue to evolve, "real-world" operating machines must deal with actual accumulated and latent contamination issues that produce non-trivial cryogenic heatload, radiation, activation, and degradation via field emission. We have developed a standardized and automated particulate contamination assay method for use in characterizing particulates found on beamline components and in cleanroom assembly environments. We present results from using this system to analyze samples taken from reworked cryomodules from CEBAF. Particle sizes are much larger than anticipated. Utility for feedback on sources to enable improved source reduction is explored. PB - JACoW Publishing CP - Geneva, Switzerland SP - 758 EP - 762 KW - cavity KW - cryomodule KW - SRF KW - GUI KW - feedback DA - 2019/08 PY - 2019 SN - "" SN - 978-3-95450-211-0 DO - doi:10.18429/JACoW-SRF2019-WETEB2 UR - http://jacow.org/srf2019/papers/weteb2.pdf ER -