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  Background Suppression with the Belle II Neural Network Trigger

Skambraks, S., Neuhaus, S., & Kiesling, C. (2018). Background Suppression with the Belle II Neural Network Trigger. Journal of Physics: Conference Series, (1085), 042026.

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 Creators:
Skambraks, Sebastian1, Author
Neuhaus, Sara1, Author
Kiesling, Christian1, Author
Affiliations:
1Max Planck Institute for Physics, Max Planck Society and Cooperation Partners, ou_2253650              

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Free keywords: Belle II
 Abstract: Neural networks are going to be used in the pipelined first level trigger of the upgraded flavor physics experiment Belle II at the high luminosity B factory SuperKEKB in Tsukuba, Japan. An instantaneous luminosity of L = 8 × 1035cm−2s−1 is anticipated, 40 times larger than the world record reached with the predecessor KEKB. Background tracks, with vertices displaced along the beamline (z-axis), are expected to be severely increased due to the high luminosity. Using input from the central drift chamber, the main tracking device of Belle II, the online neural network trigger provides 3D track reconstruction within the fixed latency of the first level trigger. In particular, the robust estimation of the z-vertices allows a significantly improved suppression of the machine background. Based on a Monte Carlo background simulation, the high event rate faced by the first level trigger is analyzed and the benefits of the neural network trigger are evaluated.

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 Dates: 2018
 Publication Status: Issued
 Pages: -
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 Table of Contents: -
 Rev. Type: -
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Title: Journal of Physics: Conference Series
  Alternative Title : J.Phys.Conf.Ser.
Source Genre: Journal
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Affiliations:
Publ. Info: IOP Publishing
Pages: - Volume / Issue: (1085) Sequence Number: - Start / End Page: 042026 Identifier: -

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Title: ACAT 2017
Source Genre: Proceedings
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Affiliations:
Publ. Info: IOP Publishing
Pages: - Volume / Issue: (1085) Sequence Number: - Start / End Page: 042026 Identifier: -