First step towards BigBite Optics for Pi0

Jure (the summer student) and I are looking at different runs with Sieve-in and try to find sieve holes. We are particularly interested in various focal-plane plots, because we believe, that first we first need to see sieve pattern (of some sort) in Focal-plane, if we want to properly make the optics. Without any visible separation in the focal plane bigbite optical calibration will be very complicated.

Here are various focal plane plots. We noticed, that one paddle in E-plane if firing far more often than the others. Is this physical or is this an artefact? Is it possible that we have a light leak?


Run #2345

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Run #2346

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Run #2350

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Run #4624

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Run #4625

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Run #4626

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Run #4627

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Run #4628

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Last modified 08/23/10