Kaon Filtering For CLAS Data

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The analysis of data from CLAS is a multi-step process. After the detectors for a given running period have been calibrated, the data is processed in the so called pass-1 cooking. During the pass-1 cooking each event is reconstructed by the program a1c which finds particle tracks and computes momenta from the raw data. The results are then passed on to several data monitoring and filtering utilities. In CLAS software, a filter is a parameterless function which returns an integer indicating whether an event should be kept by that filter or not. There is a main filter program called g1-filter ... continued below

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244 Kilobytes pages

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McNabb, J. January 30, 2001.

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Description

The analysis of data from CLAS is a multi-step process. After the detectors for a given running period have been calibrated, the data is processed in the so called pass-1 cooking. During the pass-1 cooking each event is reconstructed by the program a1c which finds particle tracks and computes momenta from the raw data. The results are then passed on to several data monitoring and filtering utilities. In CLAS software, a filter is a parameterless function which returns an integer indicating whether an event should be kept by that filter or not. There is a main filter program called g1-filter which controls several specific filters and outputs several files, one for each filter. These files may then be analyzed separately, allowing individuals interested in one reaction channel to work from smaller files than using the whole data set would require. There are several constraints on what the filter functions should do. Obviously, the filtered files should be as small as possible, however the filter should also not reject any events that might be used in the later analysis for which the filter was intended.

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244 Kilobytes pages

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  • Other Information: PBD: 30 Jan 2001

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  • Report No.: CLAS2001-001
  • Report No.: DOE/ER/40150-1802
  • Grant Number: AC05-84ER40150
  • DOI: 10.2172/774088 | External Link
  • Office of Scientific & Technical Information Report Number: 774088
  • Archival Resource Key: ark:/67531/metadc722999

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  • January 30, 2001

Added to The UNT Digital Library

  • Sept. 29, 2015, 5:31 a.m.

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  • Feb. 5, 2016, 9:38 p.m.

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McNabb, J. Kaon Filtering For CLAS Data, report, January 30, 2001; Newport News, Virginia. (digital.library.unt.edu/ark:/67531/metadc722999/: accessed September 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.