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Your search keyword '"Förtsch, J."' showing total 2 results
Start Over Author "Förtsch, J." Topic data acquisition systems
2 results on '"Förtsch, J."'

1. Event reconstruction of free-streaming data for the RICH detector in the CBM experiment.

Author

Adamczewski-Musch, J., Akishin, P., Becker, K.–H., Bendarouach, J., Deveaux, C., Dürr, M., Eschke, J., Förtsch, J., Heep, J., Höhne, C., Ivanishchev, D., Kampert, K.–H., Kochenda, L., Kravtsov, P., Kres, I., Lebedev, S., Lebedeva, E., Linev, S., Mahmoud, T., and Malaev, M.

Subjects
BARYONS, HEAVY ion collisions, DATA acquisition systems, DETECTORS, IMAGE reconstruction
Abstract

The Compressed Baryonic Matter (CBM) experiment is a dedicated heavy ion collision experiment at the FAIR facility. It will be one of the first HEP experiments which works in a triggerless mode: data received in the DAQ from the detectors will not be associated with events by a hardware trigger anymore. All raw data within a giventime period will be collected continuously in containers, so-called time-slices. The task of the reconstruction algorithms is to create events out of this raw data stream. In this contribution, the optimization of the reconstruction software in the RICH detector to the free-streaming data flow is presented. The implementation of ring reconstruction algorithms which use time measurements of the hits as an additional parameter is discussed. [ABSTRACT FROM AUTHOR]

Published
2019
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2. Development of the Readout and Data-Acquisition System for the RICH Detector of the CBM Experiment.

Author

Adamczewski-Musch, J., Akishin, P. G., Becker, K.-H., Belogurov, S. G., Bendarouach, J., Boldyreva, N. I., Deveaux, C., Dobyrn, V. V., Dürr, M., Eschke, J., Förtsch, J., Heep, J., Höhne, C., Kampert, K.-H., Khanzadeev, A. V., Kochenda, L. M., Kopfer, J., Kravtsov, P. A., Kres, I., and Lebedev, S. A.

Subjects
PHOTOMULTIPLIERS, PREAMPLIFIERS, ELECTRONIC circuit design software, ELECTRON spectrometers, DATA acquisition systems, PHOTOELECTRONS
Abstract

A 64-channel readout and data-acquisition module is described in detail. It consists of an H12700 multianode photomultiplier tube, four PADIWA preamplifier boards, and a TRB v3 card that perform the functions of a time-to-digital converter and a data concentrator. The software modules that are necessary for operation of the prototype are described. The inter-channel delays are calibrated. The drift of individual delays does not exceed 0.5 ns for the entire measurement time. The spectra of the “time over threshold” (ToT) are investigated. The influence of periodic noise pickups and the need to improve circuit designs are revealed. The timing properties of the wavelength shifter and its effect on the detection efficiency for Cherenkov rings are investigated. The most intense component is characterized by a decay time of 1.1 ns and there are components with characteristic times of 3.8 and 45 ns. The influence of single-electron spectrum features on the detection efficiency for photoelectrons and the probability of false hits are determined. The total time resolution of 131 channels is 1.1 ns (FWHM). The results make it possible to use the investigated system of readout and data acquisition in the CBM experiment. Nevertheless, the elimination of the revealed shortcomings will provide the efficiency margin and improve the reliability of the system during long-term operation. [ABSTRACT FROM AUTHOR]

Published
2018
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