## Resonant frequency is inversely proportional to square root of capacitance, Fo ~ C-1/2

## For small changes DF/ F = 0.5 DC/C

## So 0.001 fractional change in F requires 0.002 change in C

## Nominal girder capacitance is around 8000 microfarad

## Smallest adjustment is on one girder is 60 microfarad (1/8 of one 480 cap), i.e. 0.0075 DC/C (more than three times the measured frequency error)

## Could change capacitance only on a fraction of the girders

## Elected to make no changes at this time

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