LIGO Document T080044-v1

Tests with single two-wire pendulum – part two

Document #:
Document type:
T - Technical notes
Other Versions:
12 Feb 2009, 00:00
Part 2: Using a single two-wire pendulum, investigated whether a permanent “set” caused by an enforced pitch is observed, whether the effect was proportional, and whether an increase in “d” distance would decrease the permanent “set” for a given input displacement. Finer resolution repeat of the work in T080033, including with wires brazed into clamps. Effect still visible at smallest observable tilts.

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Notes and Changes:
This is one document of several exploring hysteresis and alignment issues in the quad pendulum. See related documents for the other documents in this study. T080033 is part 1 of this particular study.

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