LIGO Document T1300665-v9

The LIGO Particulate Evaluation Tool (PET)

Document #:
LIGO-T1300665-v9
Document type:
T - Technical notes
Other Versions:
Abstract:
The LIGO Particulate Evaluation Tool(PET), based on a similar system designed by the National Ignition Facility (NIF), has been developed to quantify contamination on mechanical surfaces. The PET has three main components:
1. A dry swipe technique and particulate collection tool, aka swipe tool,
2. Sample analysis using a stereomicroscope and ToupView software to count particle area,
3. And an Excel spreadsheet to calculate the Particle Cleanliness Level (PCL).

A special thanks to NIF staff for sharing reports via e-mail and key information on this system during visits by the authors of this LIGO report. Refer to https://e-reports-ext.llnl.gov/pdf/240108.pdf.

Excel template for obtaining Particulate Cleanliness level, PCL, is E1300641

Notes and Changes:
Formerly known as the Particle Cleanliness Validation System (PCVS)

Added a folder with individual images of a test filter. Users can test their ToupView setup by attempting to stitch these images. - KG 4/10/14

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