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The performance of the ZEUS central tracking detector z-by-timing electronics in a transputer based data acquisition system

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Allen,  Bruce
Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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nuclpbproc32-181.pdf
(Publisher version), 469KB

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Citation

Foster, B., Heath, G. P., Llewellyn, T. J., Gingrich, D. M., Harnew, N., Hallam-Baker, P. M., et al. (1993). The performance of the ZEUS central tracking detector z-by-timing electronics in a transputer based data acquisition system. Nuclear Physics B - Proceedings Supplements, 32, 181-188. doi:10.1016/0920-5632(93)90023-Y.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0013-5C3C-6
Abstract
The Central Tracking Detector of the ZEUS experiment employs a time difference technique to measure the z coordinate of each hit. The method provides fast, three-dimensional space point measurements which are used as input to all levels of the ZEUS trigger. Such a tracking trigger is essential in order to discriminate against events with vertices lying outside the nominal electron-proton interaction region. Since the beam crossing interval of the HERA collider is 96 ns, all data must be pipelined through the front-end readout electronics. Subsequent data aquisition employs a novel technique which utilizes a network of approximately 120 INMOS transputers to process the data in parallel. The z-by-timing method and its data aquisition have been employed successfully in recording and reconstructing tracks from electron-proton interactions in ZEUS.