[Halld-physics] Standardize FCAL Knockouts

Curtis Meyer cmeyer at cmu.edu
Fri Jul 6 13:43:11 EDT 2018

Hi Everyone -

   I have run across several analyses now where people have not been doing “FCAL knockouts”, and have also heard of at least two approximations that people use to do this. One does radial cuts on the shower position, and the other uses angular cuts on the shower.

   It seems to me that it would not be to difficult to store the central crystal ID of each shower in the REST file, and then have the
knock-outs done by crystal ID as part of the analysis launch. I suspect that we are too late to get this in for the upcoming launch, but
it seems like something that we should all be doing, and all doing the same way.

Curtis A. Meyer MCS Associate Dean for Research
Phone:    (412) 268-2745 Professor of Physics
Cell:        (412) 260-6290 Carnegie Mellon University
Fax:         (412) 681-0648 Pittsburgh, PA 15213
cmeyer at cmu.edu<mailto:cmeyer at cmu.edu> https://urldefense.proofpoint.com/v2/url?u=http-3A__www.curtismeyer.com_&d=DwIGaQ&c=lz9TcOasaINaaC3U7FbMev2lsutwpI4--09aP8Lu18s&r=tkzhhpt64rRw6UYYOiZUvX2EnoOb8Z04QVfRqLSRE8Q&m=BDoWcuylZCdYBJpsplruR-y5h7BHkwhHknXNGAB7S4I&s=8R0DGrPNyT0jdbw-6FZ_437l0CxgLGq6HRZGSC9S2Zk&e= 

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