# PC-2016-04-15-demo¶

## Notes¶

- Why is beta function reconstruction apparently not systematically different to MC?
- MC truth: particles should be the same sample as the reconstructed particles
- Detector induced error is true emittance - recon emittance
- Note statistical error that arises from beam sampling, which is not statistical error on the cooling measurement
- Statistical error on emittance change is the statistical error on sampling the scattering pdf
- In principal should pass the same beam many times through the cooling apparatus with different random seeds and look at the distribution in emittance changes

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