Cellular Automaton based Track Finding for the Central Drift Chamber of Belle II

Apr 13, 2015, 3:30 PM
Auditorium (Auditorium)



oral presentation Track2: Offline software Track 2 Session


Oliver Frost (DESY)


With the upgraded electron-positron-collider facility, SuperKEKB and Belle II, the Japanese high energy research center KEK strives to exceed its own world record luminosity by a factor of 40. To provide a solid base for the event reconstruction within the central drift chamber in the enhanced luminosity setup, a powerful track finding algorithm coping with the higher beam induced backgrounds is developed at DESY. Pursing a bottom-up approach, which is less susceptible to the increased number of background hits compared to global event reconstruction techniques such as the Hough transformation and its successors, we present a generalization of the cellular automaton. While maintaining the high execution speed by circumventing the combinatorial backtracking in the graph of local hit information and extrapolations naturally arising in bottom-up approaches, this so called weighted cellular automaton integrates the adaptiveness of the Hopfield network into the original algorithm.

Primary author


Claus Kleinwort (Deutsches Elektronen Synchrotron (DESY))

Presentation materials