Real-time algorithm for robust coincidence search

Petrovic, T; Vencelj, M; Lipoglavsek, M; Gajevic, J; Pelicon, P

doi:10.1063/1.4764223

Title: Real-time algorithm for robust coincidence search

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Abstract

In in-beam {gamma}-ray spectroscopy experiments, we often look for coincident detection events. Among every N events detected, coincidence search is naively of principal complexity O(N{sup 2}). When we limit the approximate width of the coincidence search window, the complexity can be reduced to O(N), permitting the implementation of the algorithm into real-time measurements, carried out indefinitely. We have built an algorithm to find simultaneous events between two detection channels. The algorithm was tested in an experiment where coincidences between X and {gamma} rays detected in two HPGe detectors were observed in the decay of {sup 61}Cu. Functioning of the algorithm was validated by comparing calculated experimental branching ratio for EC decay and theoretical calculation for 3 selected {gamma}-ray energies for {sup 61}Cu decay. Our research opened a question on the validity of the adopted value of total angular momentum of the 656 keV state (J{sup {pi}} = 1/2{sup -}) in {sup 61}Ni.

Authors:

Petrovic, T; Vencelj, M; Lipoglavsek, M; Gajevic, J; Pelicon, P ^[1]

Jozef Stefan Institute, Jamova cesta 39, Ljubljana, Slovenia and Cosylab d.d., Control System Laboratory, Teslova ulica 30, Ljubljana (Slovenia)

Publication Date:: Sat Oct 20 00:00:00 EDT 2012

OSTI Identifier:: 22075595

Resource Type:: Journal Article

Journal Name:: AIP Conference Proceedings

Additional Journal Information:: Journal Volume: 1491; Journal Issue: 1; Conference: Conference on nuclear structure and dynamics 2012, Opatija (Croatia), 9-13 Jul 2012; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X

Country of Publication:: United States

Language:: English

Subject:: 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ALGORITHMS; APPROXIMATIONS; BRANCHING RATIO; COINCIDENCE SPECTROMETRY; COPPER 61; ELECTRON CAPTURE; ENERGY-LEVEL TRANSITIONS; GAMMA DETECTION; GAMMA SPECTROMETERS; GAMMA SPECTROSCOPY; HIGH-PURITY GE DETECTORS; KEV RANGE; NICKEL 61; TIME MEASUREMENT; X-RAY DETECTION

Citation Formats


                    Petrovic, T, Vencelj, M, Lipoglavsek, M, Gajevic, J, Pelicon, P, and Jozef Stefan Institute, Jamova cesta 39, Ljubljana. Real-time algorithm for robust coincidence search.  United States: N. p., 2012. 
        Web.  doi:10.1063/1.4764223.

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                    Petrovic, T, Vencelj, M, Lipoglavsek, M, Gajevic, J, Pelicon, P, & Jozef Stefan Institute, Jamova cesta 39, Ljubljana. Real-time algorithm for robust coincidence search.  United States.  https://doi.org/10.1063/1.4764223

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                    Petrovic, T, Vencelj, M, Lipoglavsek, M, Gajevic, J, Pelicon, P, and Jozef Stefan Institute, Jamova cesta 39, Ljubljana. 2012.  
        "Real-time algorithm for robust coincidence search".  United States.  https://doi.org/10.1063/1.4764223.

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@article{osti_22075595,

  title        = {Real-time algorithm for robust coincidence search},

  author       = {Petrovic, T and Vencelj, M and Lipoglavsek, M and Gajevic, J and Pelicon, P and Jozef Stefan Institute, Jamova cesta 39, Ljubljana},

  abstractNote = {In in-beam {gamma}-ray spectroscopy experiments, we often look for coincident detection events. Among every N events detected, coincidence search is naively of principal complexity O(N{sup 2}). When we limit the approximate width of the coincidence search window, the complexity can be reduced to O(N), permitting the implementation of the algorithm into real-time measurements, carried out indefinitely. We have built an algorithm to find simultaneous events between two detection channels. The algorithm was tested in an experiment where coincidences between X and {gamma} rays detected in two HPGe detectors were observed in the decay of {sup 61}Cu. Functioning of the algorithm was validated by comparing calculated experimental branching ratio for EC decay and theoretical calculation for 3 selected {gamma}-ray energies for {sup 61}Cu decay. Our research opened a question on the validity of the adopted value of total angular momentum of the 656 keV state (J{sup {pi}} = 1/2{sup -}) in {sup 61}Ni.},

  doi          = {10.1063/1.4764223},

  url          = {https://www.osti.gov/biblio/22075595},
  journal      = {AIP Conference Proceedings},

  issn         = {0094-243X},

  number       = 1,

  volume       = 1491,

  place        = {United States},

  year         = {Sat Oct 20 00:00:00 EDT 2012},

  month        = {Sat Oct 20 00:00:00 EDT 2012}

}

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