IceTop reconstruction with rime (an update)
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Transcript of IceTop reconstruction with rime (an update)
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IceTop reconstruction with rime (an update)
Dmitry Chirkin, LBNL
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Improvements/updates to code
• a number of bug fixes
• refactored and optimized reconstruction code
• particle density fluctuations are now distributed log-normally. This leads to a self-consistent description of fluctuations (previously density fluctuations had to be rescaled to yield reasonable results)
• a new SAF (Stefan Arne Fabian) parameterization of density term is implemented. A new parameter describes the curvature of the particle density growth with distance and may turn out to be useful to separate photonic from ionic showers.
![Page 3: IceTop reconstruction with rime (an update)](https://reader036.fdocuments.in/reader036/viewer/2022083006/56813ad6550346895da31503/html5/thumbnails/3.jpg)
Shower profiles
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DOM distance profile
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Lateral profile
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Lateral profile (normalized)
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IceTop – in-ice coincidence plots
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Summary
• IceTop reconstruction in rime is quite mature. It includes the latest LDF function and other developments
• It handles geometrical (shower front fit) reconstruction and LDF fit in one symmetric step, treating both as respective contributions to the llh function
• several bugs were found and fixed; the code was somewhat refactored and optimized.